Reverted EmbeddedDocuments meta handling.

You now can turn off inheritance (MongoEngine/mongoengine#119)

.travis.yml

@@ -1,12 +1,28 @@
 # http://travis-ci.org/#!/MongoEngine/mongoengine
 language: python
 python:
+    - 2.5
     - 2.6
     - 2.7
+    - 3.1
+    - 3.2
+env:
+  - PYMONGO=dev
+  - PYMONGO=2.3
+  - PYMONGO=2.2
 install:
-    - sudo apt-get install zlib1g zlib1g-dev
-    - sudo ln -s /usr/lib/i386-linux-gnu/libz.so /usr/lib/
-    - pip install PIL --use-mirrors ; true
+    - if [[ $TRAVIS_PYTHON_VERSION == '2.'* ]]; then sudo apt-get install zlib1g zlib1g-dev; fi
+    - if [[ $TRAVIS_PYTHON_VERSION == '2.'* ]]; then sudo ln -s /usr/lib/i386-linux-gnu/libz.so /usr/lib/; fi
+    - if [[ $TRAVIS_PYTHON_VERSION == '2.'* ]]; then pip install PIL --use-mirrors ; true; fi
+    - if [[ $TRAVIS_PYTHON_VERSION == '2.'* ]]; then pip install PIL --use-mirrors ; true; fi
+    - if [[ $PYMONGO == 'dev' ]]; then pip install https://github.com/mongodb/mongo-python-driver/tarball/master; true; fi
+    - if [[ $PYMONGO != 'dev' ]]; then pip install pymongo==$PYMONGO --use-mirrors; true; fi
     - python setup.py install
 script:
-    - python setup.py test
+    - python setup.py test
+notifications:
+  irc: "irc.freenode.org#mongoengine"
+branches:
+  only:
+    - master
+    - 0.7

AUTHORS

@@ -8,6 +8,7 @@ Florian Schlachter <flori@n-schlachter.de>
 Steve Challis <steve@stevechallis.com>
 Wilson Júnior <wilsonpjunior@gmail.com>
 Dan Crosta https://github.com/dcrosta
+Laine Herron https://github.com/LaineHerron
 
 CONTRIBUTORS
 
@@ -114,4 +115,11 @@ that much better:
  * Jaime Irurzun
  * Alexandre González
  * Thomas Steinacher
- * Tommi Komulainen
+ * Tommi Komulainen
+ * Peter Landry
+ * biszkoptwielki
+ * Anton Kolechkin
+ * Sergey Nikitin
+ * psychogenic
+ * Stefan Wójcik
+ * dimonb

README.rst

@@ -63,11 +63,6 @@ Some simple examples of what MongoEngine code looks like::
     ...         print 'Link:', post.url
     ...     print
     ...
-    === Using MongoEngine ===
-    See the tutorial
-
-    === MongoEngine Docs ===
-    Link: hmarr.com/mongoengine
 
     >>> len(BlogPost.objects)
     2
@@ -85,7 +80,7 @@ Some simple examples of what MongoEngine code looks like::
 Tests
 =====
 To run the test suite, ensure you are running a local instance of MongoDB on
-the standard port, and run ``python setup.py test``.
+the standard port, and run: ``python setup.py test``.
 
 Community
 =========
@@ -93,11 +88,10 @@ Community
   <http://groups.google.com/group/mongoengine-users>`_
 - `MongoEngine Developers mailing list
   <http://groups.google.com/group/mongoengine-dev>`_
-- `#mongoengine IRC channel <irc://irc.freenode.net/mongoengine>`_
+- `#mongoengine IRC channel <http://webchat.freenode.net/?channels=mongoengine>`_
 
 Contributing
 ============
 The source is available on `GitHub <http://github.com/MongoEngine/mongoengine>`_ - to
 contribute to the project, fork it on GitHub and send a pull request, all
 contributions and suggestions are welcome!
-

benchmark.py

@@ -28,47 +28,64 @@ def main():
 
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - Pymongo
-    1.1141769886
+    3.86744189262
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine
-    2.37724113464
+    6.23374891281
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine, safe=False, validate=False
-    1.92479610443
+    5.33027005196
+    ----------------------------------------------------------------------------------------------------
+    Creating 10000 dictionaries - MongoEngine, safe=False, validate=False, cascade=False
+    pass - No Cascade
 
     0.5.X
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - Pymongo
-    1.10552310944
+    3.89597702026
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine
-    16.5169169903
+    21.7735359669
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine, safe=False, validate=False
-    14.9446101189
+    19.8670389652
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine, safe=False, validate=False, cascade=False
-    14.912801981
-    ----------------------------------------------------------------------------------------------------
-    Creating 10000 dictionaries - MongoEngine, force=True
-    14.9617750645
+    pass - No Cascade
 
-    Performance
+    0.6.X
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - Pymongo
-    1.10072994232
+    3.81559205055
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine
-    5.27341103554
+    10.0446798801
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine, safe=False, validate=False
-    4.49365401268
+    9.51354718208
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine, safe=False, validate=False, cascade=False
-    4.43459296227
+    9.02567505836
     ----------------------------------------------------------------------------------------------------
     Creating 10000 dictionaries - MongoEngine, force=True
-    4.40114378929
+    8.44933390617
+
+    0.7.X
+    ----------------------------------------------------------------------------------------------------
+    Creating 10000 dictionaries - Pymongo
+    3.78801012039
+    ----------------------------------------------------------------------------------------------------
+    Creating 10000 dictionaries - MongoEngine
+    9.73050498962
+    ----------------------------------------------------------------------------------------------------
+    Creating 10000 dictionaries - MongoEngine, safe=False, validate=False
+    8.33456707001
+    ----------------------------------------------------------------------------------------------------
+    Creating 10000 dictionaries - MongoEngine, safe=False, validate=False, cascade=False
+    8.37778115273
+    ----------------------------------------------------------------------------------------------------
+    Creating 10000 dictionaries - MongoEngine, force=True
+    8.36906409264
     """
 
     setup = """

docs/changelog.rst

@@ -2,6 +2,47 @@
 Changelog
 =========
 
+Changes in 0.7.3
+================
+- Reverted EmbeddedDocuments meta handling - now can turn off inheritance (MongoEngine/mongoengine#119)
+
+Changes in 0.7.2
+================
+- Update index spec generation so its not destructive (MongoEngine/mongoengine#113)
+
+Changes in 0.7.1
+=================
+- Fixed index spec inheritance (MongoEngine/mongoengine#111)
+
+Changes in 0.7.0
+=================
+- Updated queryset.delete so you can use with skip / limit (MongoEngine/mongoengine#107)
+- Updated index creation allows kwargs to be passed through refs (MongoEngine/mongoengine#104)
+- Fixed Q object merge edge case (MongoEngine/mongoengine#109)
+- Fixed reloading on sharded documents (hmarr/mongoengine#569)
+- Added NotUniqueError for duplicate keys (MongoEngine/mongoengine#62)
+- Added custom collection / sequence naming for SequenceFields (MongoEngine/mongoengine#92)
+- Fixed UnboundLocalError in composite index with pk field (MongoEngine/mongoengine#88)
+- Updated ReferenceField's to optionally store ObjectId strings
+  this will become the default in 0.8 (MongoEngine/mongoengine#89)
+- Added FutureWarning - save will default to `cascade=False` in 0.8
+- Added example of indexing embedded document fields (MongoEngine/mongoengine#75)
+- Fixed ImageField resizing when forcing size (MongoEngine/mongoengine#80)
+- Add flexibility for fields handling bad data (MongoEngine/mongoengine#78)
+- Embedded Documents no longer handle meta definitions
+- Use weakref proxies in base lists / dicts (MongoEngine/mongoengine#74)
+- Improved queryset filtering (hmarr/mongoengine#554)
+- Fixed Dynamic Documents and Embedded Documents (hmarr/mongoengine#561)
+- Fixed abstract classes and shard keys (MongoEngine/mongoengine#64)
+- Fixed Python 2.5 support
+- Added Python 3 support (thanks to Laine Heron)
+
+Changes in 0.6.20
+=================
+- Added support for distinct and db_alias (MongoEngine/mongoengine#59)
+- Improved support for chained querysets when constraining the same fields (hmarr/mongoengine#554)
+- Fixed BinaryField lookup re (MongoEngine/mongoengine#48)
+
 Changes in 0.6.19
 =================
 
@@ -80,7 +121,7 @@ Changes in 0.6.8
 ================
 - Fixed FileField losing reference when no default set
 - Removed possible race condition from FileField (grid_file)
-- Added assignment to save, can now do: b = MyDoc(**kwargs).save()
+- Added assignment to save, can now do: `b = MyDoc(**kwargs).save()`
 - Added support for pull operations on nested EmbeddedDocuments
 - Added support for choices with GenericReferenceFields
 - Added support for choices with GenericEmbeddedDocumentFields

docs/guide/defining-documents.rst

@@ -467,11 +467,16 @@ If a dictionary is passed then the following options are available:
 :attr:`unique` (Default: False)
     Whether the index should be sparse.
 
+.. note ::
+
+    To index embedded files / dictionary fields use 'dot' notation eg:
+    `rank.title`
+
 .. warning::
 
-
-   Inheritance adds extra indices.
-   If don't need inheritance for a document turn inheritance off - see :ref:`document-inheritance`.
+    Inheritance adds extra indices.
+    If don't need inheritance for a document turn inheritance off -
+    see :ref:`document-inheritance`.
 
 
 Geospatial indexes

docs/upgrade.rst

@@ -2,18 +2,79 @@
 Upgrading
 =========
 
+0.6 to 0.7
+==========
+
+Cascade saves
+-------------
+
+Saves will raise a `FutureWarning` if they cascade and cascade hasn't been set
+to True.  This is because in 0.8 it will default to False.  If you require
+cascading saves then either set it in the `meta` or pass
+via `save` eg ::
+
+    # At the class level:
+    class Person(Document):
+        meta = {'cascade': True}
+
+    # Or in code:
+    my_document.save(cascade=True)
+
+.. note ::
+    Remember: cascading saves **do not** cascade through lists.
+
+ReferenceFields
+---------------
+
+ReferenceFields now can store references as ObjectId strings instead of DBRefs.
+This will become the default in 0.8 and if `dbref` is not set a `FutureWarning`
+will be raised.
+
+
+To explicitly continue to use DBRefs change the `dbref` flag
+to True ::
+
+   class Person(Document):
+       groups = ListField(ReferenceField(Group, dbref=True))
+
+To migrate to using strings instead of DBRefs you will have to manually
+migrate ::
+
+        # Step 1 - Migrate the model definition
+        class Group(Document):
+            author = ReferenceField(User, dbref=False)
+            members = ListField(ReferenceField(User, dbref=False))
+
+        # Step 2 - Migrate the data
+        for g in Group.objects():
+            g.author = g.author
+            g.members = g.members
+            g.save()
+
+
+item_frequencies
+----------------
+
+In the 0.6 series we added support for null / zero / false values in
+item_frequencies.  A side effect was to return keys in the value they are
+stored in rather than as string representations.  Your code may need to be
+updated to handle native types rather than strings keys for the results of
+item frequency queries.
+
 0.5 to 0.6
 ==========
 
-Embedded Documents - if you had a `pk` field you will have to rename it from `_id`
-to `pk` as pk is no longer a property of Embedded Documents.
+Embedded Documents - if you had a `pk` field you will have to rename it from
+`_id` to `pk` as pk is no longer a property of Embedded Documents.
 
 Reverse Delete Rules in Embedded Documents, MapFields and DictFields now throw
 an InvalidDocument error as they aren't currently supported.
 
-Document._get_subclasses - Is no longer used and the class method has been removed.
+Document._get_subclasses - Is no longer used and the class method has been
+removed.
 
-Document.objects.with_id - now raises an InvalidQueryError if used with a filter.
+Document.objects.with_id - now raises an InvalidQueryError if used with a
+filter.
 
 FutureWarning - A future warning has been added to all inherited classes that
 don't define `allow_inheritance` in their meta.
@@ -37,11 +98,11 @@ human-readable name for the option.
 PyMongo / MongoDB
 -----------------
 
-map reduce now requires pymongo 1.11+- The pymongo merge_output and reduce_output
-parameters, have been depreciated.
+map reduce now requires pymongo 1.11+- The pymongo `merge_output` and
+`reduce_output` parameters, have been depreciated.
 
-More methods now use map_reduce as db.eval is not supported for sharding as such
-the following have been changed:
+More methods now use map_reduce as db.eval is not supported for sharding as
+such the following have been changed:
 
     * :meth:`~mongoengine.queryset.QuerySet.sum`
     * :meth:`~mongoengine.queryset.QuerySet.average`
@@ -51,8 +112,8 @@ the following have been changed:
 Default collection naming
 -------------------------
 
-Previously it was just lowercase, its now much more pythonic and readable as its
-lowercase and underscores, previously ::
+Previously it was just lowercase, its now much more pythonic and readable as
+its lowercase and underscores, previously ::
 
     class MyAceDocument(Document):
         pass
@@ -88,7 +149,8 @@ Alternatively, you can rename your collections eg ::
 
         failure = False
 
-        collection_names = [d._get_collection_name() for d in _document_registry.values()]
+        collection_names = [d._get_collection_name()
+                            for d in _document_registry.values()]
 
         for new_style_name in collection_names:
             if not new_style_name:  # embedded documents don't have collections
@@ -106,7 +168,8 @@ Alternatively, you can rename your collections eg ::
                         old_style_name, new_style_name)
                 else:
                     db[old_style_name].rename(new_style_name)
-                    print "Renamed:  %s to %s" % (old_style_name, new_style_name)
+                    print "Renamed:  %s to %s" % (old_style_name,
+                                                  new_style_name)
 
         if failure:
             print "Upgrading  collection names failed"

mongoengine/__init__.py

@@ -12,13 +12,12 @@ from signals import *
 __all__ = (document.__all__ + fields.__all__ + connection.__all__ +
            queryset.__all__ + signals.__all__)
 
-VERSION = (0, 6, 19)
+VERSION = (0, 7, 3)
 
 
 def get_version():
-    version = '%s.%s' % (VERSION[0], VERSION[1])
-    if VERSION[2]:
-        version = '%s.%s' % (version, VERSION[2])
-    return version
+    if isinstance(VERSION[-1], basestring):
+        return '.'.join(map(str, VERSION[:-1])) + VERSION[-1]
+    return '.'.join(map(str, VERSION))
 
 __version__ = get_version()

mongoengine/dereference.py

@@ -34,12 +34,31 @@ class DeReference(object):
 
         doc_type = None
         if instance and instance._fields:
-            doc_type = instance._fields[name].field
+            doc_type = instance._fields[name]
+            if hasattr(doc_type, 'field'):
+                doc_type = doc_type.field
 
             if isinstance(doc_type, ReferenceField):
+                field = doc_type
                 doc_type = doc_type.document_type
-                if all([i.__class__ == doc_type for i in items]):
+                is_list = not hasattr(items, 'items')
+
+                if is_list and all([i.__class__ == doc_type for i in items]):
                     return items
+                elif not is_list and all([i.__class__ == doc_type
+                                         for i in items.values()]):
+                    return items
+                elif not field.dbref:
+                    if not hasattr(items, 'items'):
+                        items = [field.to_python(v)
+                             if not isinstance(v, (DBRef, Document)) else v
+                             for v in items]
+                    else:
+                        items = dict([
+                            (k, field.to_python(v))
+                            if not isinstance(v, (DBRef, Document)) else (k, v)
+                            for k, v in items.iteritems()]
+                        )
 
         self.reference_map = self._find_references(items)
         self.object_map = self._fetch_objects(doc_type=doc_type)

mongoengine/django/shortcuts.py

@@ -1,4 +1,3 @@
-from django.http import Http404
 from mongoengine.queryset import QuerySet
 from mongoengine.base import BaseDocument
 from mongoengine.base import ValidationError
@@ -27,6 +26,7 @@ def get_document_or_404(cls, *args, **kwargs):
     try:
         return queryset.get(*args, **kwargs)
     except (queryset._document.DoesNotExist, ValidationError):
+        from django.http import Http404
         raise Http404('No %s matches the given query.' % queryset._document._class_name)
 
 def get_list_or_404(cls, *args, **kwargs):
@@ -42,5 +42,6 @@ def get_list_or_404(cls, *args, **kwargs):
     queryset = _get_queryset(cls)
     obj_list = list(queryset.filter(*args, **kwargs))
     if not obj_list:
+        from django.http import Http404
         raise Http404('No %s matches the given query.' % queryset._document._class_name)
     return obj_list

mongoengine/django/tests.py

@@ -1,10 +1,28 @@
 #coding: utf-8
-from django.test import TestCase
-from django.conf import settings
+from nose.plugins.skip import SkipTest
 
+from mongoengine.python_support import PY3
 from mongoengine import connect
 
+try:
+    from django.test import TestCase
+    from django.conf import settings
+except Exception as err:
+    if PY3:
+        from unittest import TestCase
+        # Dummy value so no error
+        class settings:
+            MONGO_DATABASE_NAME = 'dummy'
+    else:
+        raise err
+
+
 class MongoTestCase(TestCase):
+
+    def setUp(self):
+        if PY3:
+            raise SkipTest('django does not have Python 3 support')
+
     """
     TestCase class that clear the collection between the tests
     """

mongoengine/document.py

@@ -1,15 +1,19 @@
+import warnings
+
 import pymongo
+import re
 
 from bson.dbref import DBRef
+from mongoengine import signals, queryset
 
-from mongoengine import signals
 from base import (DocumentMetaclass, TopLevelDocumentMetaclass, BaseDocument,
                   BaseDict, BaseList)
-from queryset import OperationError
+from queryset import OperationError, NotUniqueError
 from connection import get_db, DEFAULT_CONNECTION_NAME
 
 __all__ = ['Document', 'EmbeddedDocument', 'DynamicDocument',
-           'DynamicEmbeddedDocument', 'OperationError', 'InvalidCollectionError']
+           'DynamicEmbeddedDocument', 'OperationError',
+           'InvalidCollectionError', 'NotUniqueError']
 
 
 class InvalidCollectionError(Exception):
@@ -21,8 +25,19 @@ class EmbeddedDocument(BaseDocument):
     collection.  :class:`~mongoengine.EmbeddedDocument`\ s should be used as
     fields on :class:`~mongoengine.Document`\ s through the
     :class:`~mongoengine.EmbeddedDocumentField` field type.
+
+    A :class:`~mongoengine.EmbeddedDocument` subclass may be itself subclassed,
+    to create a specialised version of the embedded document that will be
+    stored in the same collection. To facilitate this behaviour, `_cls` and
+    `_types` fields are added to documents (hidden though the MongoEngine
+    interface though). To disable this behaviour and remove the dependence on
+    the presence of `_cls` and `_types`, set :attr:`allow_inheritance` to
+    ``False`` in the :attr:`meta` dictionary.
     """
 
+    # The __metaclass__ attribute is removed by 2to3 when running with Python3
+    # my_metaclass is defined so that metaclass can be queried in Python 2 & 3
+    my_metaclass  = DocumentMetaclass
     __metaclass__ = DocumentMetaclass
 
     def __init__(self, *args, **kwargs):
@@ -91,9 +106,12 @@ class Document(BaseDocument):
     disabled by either setting types to False on the specific index or
     by setting index_types to False on the meta dictionary for the document.
     """
+
+    # The __metaclass__ attribute is removed by 2to3 when running with Python3
+    # my_metaclass is defined so that metaclass can be queried in Python 2 & 3
+    my_metaclass  = TopLevelDocumentMetaclass
     __metaclass__ = TopLevelDocumentMetaclass
 
-    @apply
     def pk():
         """Primary key alias
         """
@@ -102,6 +120,7 @@ class Document(BaseDocument):
         def fset(self, value):
             return setattr(self, self._meta['id_field'], value)
         return property(fget, fset)
+    pk = pk()
 
     @classmethod
     def _get_db(cls):
@@ -127,8 +146,9 @@ class Document(BaseDocument):
                     options = cls._collection.options()
                     if options.get('max') != max_documents or \
                        options.get('size') != max_size:
-                        msg = ('Cannot create collection "%s" as a capped '
-                               'collection as it already exists') % cls._collection
+                        msg = (('Cannot create collection "%s" as a capped '
+                               'collection as it already exists')
+                                % cls._collection)
                         raise InvalidCollectionError(msg)
                 else:
                     # Create the collection as a capped collection
@@ -142,8 +162,9 @@ class Document(BaseDocument):
                 cls._collection = db[collection_name]
         return cls._collection
 
-    def save(self, safe=True, force_insert=False, validate=True, write_options=None,
-            cascade=None, cascade_kwargs=None, _refs=None):
+    def save(self, safe=True, force_insert=False, validate=True,
+             write_options=None,  cascade=None, cascade_kwargs=None,
+             _refs=None):
         """Save the :class:`~mongoengine.Document` to the database. If the
         document already exists, it will be updated, otherwise it will be
         created.
@@ -156,27 +177,30 @@ class Document(BaseDocument):
             updates of existing documents
         :param validate: validates the document; set to ``False`` to skip.
         :param write_options: Extra keyword arguments are passed down to
-                :meth:`~pymongo.collection.Collection.save` OR
-                :meth:`~pymongo.collection.Collection.insert`
-                which will be used as options for the resultant ``getLastError`` command.
-                For example, ``save(..., write_options={w: 2, fsync: True}, ...)`` will
-                wait until at least two servers have recorded the write and will force an
-                fsync on each server being written to.
-        :param cascade: Sets the flag for cascading saves.  You can set a default by setting
-            "cascade" in the document __meta__
-        :param cascade_kwargs: optional kwargs dictionary to be passed throw to cascading saves
+            :meth:`~pymongo.collection.Collection.save` OR
+            :meth:`~pymongo.collection.Collection.insert`
+            which will be used as options for the resultant
+            ``getLastError`` command.  For example,
+            ``save(..., write_options={w: 2, fsync: True}, ...)`` will
+            wait until at least two servers have recorded the write and
+            will force an fsync on the primary server.
+        :param cascade: Sets the flag for cascading saves.  You can set a
+            default by setting "cascade" in the document __meta__
+        :param cascade_kwargs: optional kwargs dictionary to be passed throw
+            to cascading saves
         :param _refs: A list of processed references used in cascading saves
 
         .. versionchanged:: 0.5
-            In existing documents it only saves changed fields using set / unset
-            Saves are cascaded and any :class:`~bson.dbref.DBRef` objects
-            that have changes are saved as well.
+            In existing documents it only saves changed fields using
+            set / unset.  Saves are cascaded and any
+            :class:`~bson.dbref.DBRef` objects that have changes are
+            saved as well.
         .. versionchanged:: 0.6
-            Cascade saves are optional = defaults to True, if you want fine grain
-            control then you can turn off using document meta['cascade'] = False
-            Also you can pass different kwargs to the cascade save using cascade_kwargs
-            which overwrites the existing kwargs with custom values
-
+            Cascade saves are optional = defaults to True, if you want
+            fine grain control then you can turn off using document
+            meta['cascade'] = False  Also you can pass different kwargs to
+            the cascade save using cascade_kwargs which overwrites the
+            existing kwargs with custom values
         """
         signals.pre_save.send(self.__class__, document=self)
 
@@ -194,13 +218,14 @@ class Document(BaseDocument):
             collection = self.__class__.objects._collection
             if created:
                 if force_insert:
-                    object_id = collection.insert(doc, safe=safe, **write_options)
+                    object_id = collection.insert(doc, safe=safe,
+                                                  **write_options)
                 else:
-                    object_id = collection.save(doc, safe=safe, **write_options)
+                    object_id = collection.save(doc, safe=safe,
+                                                **write_options)
             else:
                 object_id = doc['_id']
                 updates, removals = self._delta()
-
                 # Need to add shard key to query, or you get an error
                 select_dict = {'_id': object_id}
                 shard_key = self.__class__._meta.get('shard_key', tuple())
@@ -210,11 +235,15 @@ class Document(BaseDocument):
 
                 upsert = self._created
                 if updates:
-                    collection.update(select_dict, {"$set": updates}, upsert=upsert, safe=safe, **write_options)
+                    collection.update(select_dict, {"$set": updates},
+                        upsert=upsert, safe=safe, **write_options)
                 if removals:
-                    collection.update(select_dict, {"$unset": removals}, upsert=upsert, safe=safe, **write_options)
+                    collection.update(select_dict, {"$unset": removals},
+                        upsert=upsert, safe=safe, **write_options)
 
-            cascade = self._meta.get('cascade', True) if cascade is None else cascade
+            warn_cascade = not cascade and 'cascade' not in self._meta
+            cascade = (self._meta.get('cascade', True)
+                       if cascade is None else cascade)
             if cascade:
                 kwargs = {
                     "safe": safe,
@@ -226,45 +255,64 @@ class Document(BaseDocument):
                 if cascade_kwargs:  # Allow granular control over cascades
                     kwargs.update(cascade_kwargs)
                 kwargs['_refs'] = _refs
-                #self._changed_fields = []
-                self.cascade_save(**kwargs)
+                self.cascade_save(warn_cascade=warn_cascade, **kwargs)
 
         except pymongo.errors.OperationFailure, err:
             message = 'Could not save document (%s)'
-            if u'duplicate key' in unicode(err):
+            if re.match('^E1100[01] duplicate key', unicode(err)):
+                # E11000 - duplicate key error index
+                # E11001 - duplicate key on update
                 message = u'Tried to save duplicate unique keys (%s)'
+                raise NotUniqueError(message % unicode(err))
             raise OperationError(message % unicode(err))
         id_field = self._meta['id_field']
-        self[id_field] = self._fields[id_field].to_python(object_id)
+        if id_field not in self._meta.get('shard_key', []):
+            self[id_field] = self._fields[id_field].to_python(object_id)
 
         self._changed_fields = []
         self._created = False
         signals.post_save.send(self.__class__, document=self, created=created)
         return self
 
-    def cascade_save(self, *args, **kwargs):
-        """Recursively saves any references / generic references on an object"""
-        from fields import ReferenceField, GenericReferenceField
+    def cascade_save(self, warn_cascade=None, *args, **kwargs):
+        """Recursively saves any references /
+           generic references on an objects"""
+        import fields
         _refs = kwargs.get('_refs', []) or []
 
         for name, cls in self._fields.items():
-
-            if not isinstance(cls, (ReferenceField, GenericReferenceField)):
+            if not isinstance(cls, (fields.ReferenceField,
+                                    fields.GenericReferenceField)):
                 continue
 
             ref = getattr(self, name)
-            if not ref:
+            if not ref or isinstance(ref, DBRef):
                 continue
-            if isinstance(ref, DBRef):
+
+            if not getattr(ref, '_changed_fields', True):
                 continue
 
             ref_id = "%s,%s" % (ref.__class__.__name__, str(ref._data))
             if ref and ref_id not in _refs:
+                if warn_cascade:
+                    msg = ("Cascading saves will default to off in 0.8, "
+                          "please  explicitly set `.save(cascade=True)`")
+                    warnings.warn(msg, FutureWarning)
                 _refs.append(ref_id)
                 kwargs["_refs"] = _refs
                 ref.save(**kwargs)
                 ref._changed_fields = []
 
+    @property
+    def _object_key(self):
+        """Dict to identify object in collection
+        """
+        select_dict = {'pk': self.pk}
+        shard_key = self.__class__._meta.get('shard_key', tuple())
+        for k in shard_key:
+            select_dict[k] = getattr(self, k)
+        return select_dict
+
     def update(self, **kwargs):
         """Performs an update on the :class:`~mongoengine.Document`
         A convenience wrapper to :meth:`~mongoengine.QuerySet.update`.
@@ -276,11 +324,7 @@ class Document(BaseDocument):
             raise OperationError('attempt to update a document not yet saved')
 
         # Need to add shard key to query, or you get an error
-        select_dict = {'pk': self.pk}
-        shard_key = self.__class__._meta.get('shard_key', tuple())
-        for k in shard_key:
-            select_dict[k] = getattr(self, k)
-        return self.__class__.objects(**select_dict).update_one(**kwargs)
+        return self.__class__.objects(**self._object_key).update_one(**kwargs)
 
     def delete(self, safe=False):
         """Delete the :class:`~mongoengine.Document` from the database. This
@@ -291,7 +335,7 @@ class Document(BaseDocument):
         signals.pre_delete.send(self.__class__, document=self)
 
         try:
-            self.__class__.objects(pk=self.pk).delete(safe=safe)
+            self.__class__.objects(**self._object_key).delete(safe=safe)
         except pymongo.errors.OperationFailure, err:
             message = u'Could not delete document (%s)' % err.message
             raise OperationError(message)
@@ -304,8 +348,8 @@ class Document(BaseDocument):
 
         .. versionadded:: 0.5
         """
-        from dereference import DeReference
-        self._data = DeReference()(self._data, max_depth)
+        import dereference
+        self._data = dereference.DeReference()(self._data, max_depth)
         return self
 
     def reload(self, max_depth=1):
@@ -353,17 +397,18 @@ class Document(BaseDocument):
         """This method registers the delete rules to apply when removing this
         object.
         """
-        cls._meta['delete_rules'][(document_cls, field_name)] = rule
+        delete_rules = cls._meta.get('delete_rules') or {}
+        delete_rules[(document_cls, field_name)] = rule
+        cls._meta['delete_rules'] = delete_rules
 
     @classmethod
     def drop_collection(cls):
         """Drops the entire collection associated with this
         :class:`~mongoengine.Document` type from the database.
         """
-        from mongoengine.queryset import QuerySet
         db = cls._get_db()
         db.drop_collection(cls._get_collection_name())
-        QuerySet._reset_already_indexed(cls)
+        queryset.QuerySet._reset_already_indexed(cls)
 
 
 class DynamicDocument(Document):
@@ -379,7 +424,12 @@ class DynamicDocument(Document):
 
         There is one caveat on Dynamic Documents: fields cannot start with `_`
     """
+
+    # The __metaclass__ attribute is removed by 2to3 when running with Python3
+    # my_metaclass is defined so that metaclass can be queried in Python 2 & 3
+    my_metaclass  = TopLevelDocumentMetaclass
     __metaclass__ = TopLevelDocumentMetaclass
+
     _dynamic = True
 
     def __delattr__(self, *args, **kwargs):
@@ -398,7 +448,11 @@ class DynamicEmbeddedDocument(EmbeddedDocument):
     information about dynamic documents.
     """
 
+    # The __metaclass__ attribute is removed by 2to3 when running with Python3
+    # my_metaclass is defined so that metaclass can be queried in Python 2 & 3
+    my_metaclass  = DocumentMetaclass
     __metaclass__ = DocumentMetaclass
+
     _dynamic = True
 
     def __delattr__(self, *args, **kwargs):

mongoengine/fields.py

@@ -1,18 +1,22 @@
 import datetime
-import time
 import decimal
-import gridfs
 import re
+import time
 import uuid
 import warnings
+import itertools
+from operator import itemgetter
 
+import gridfs
 from bson import Binary, DBRef, SON, ObjectId
+
+from mongoengine.python_support import (PY3, bin_type, txt_type,
+                                        str_types, StringIO)
 from base import (BaseField, ComplexBaseField, ObjectIdField,
                   ValidationError, get_document, BaseDocument)
 from queryset import DO_NOTHING, QuerySet
 from document import Document, EmbeddedDocument
 from connection import get_db, DEFAULT_CONNECTION_NAME
-from operator import itemgetter
 
 
 try:
@@ -21,12 +25,6 @@ except ImportError:
     Image = None
     ImageOps = None
 
-try:
-    from cStringIO import StringIO
-except ImportError:
-    from StringIO import StringIO
-
-
 __all__ = ['StringField', 'IntField', 'FloatField', 'BooleanField',
            'DateTimeField', 'EmbeddedDocumentField', 'ListField', 'DictField',
            'ObjectIdField', 'ReferenceField', 'ValidationError', 'MapField',
@@ -51,8 +49,11 @@ class StringField(BaseField):
     def to_python(self, value):
         if isinstance(value, unicode):
             return value
-        else:
-            return value.decode('utf-8')
+        try:
+            value = value.decode('utf-8')
+        except:
+            pass
+        return value
 
     def validate(self, value):
         if not isinstance(value, basestring):
@@ -152,7 +153,11 @@ class IntField(BaseField):
         super(IntField, self).__init__(**kwargs)
 
     def to_python(self, value):
-        return int(value)
+        try:
+            value = int(value)
+        except ValueError:
+            pass
+        return value
 
     def validate(self, value):
         try:
@@ -182,7 +187,11 @@ class FloatField(BaseField):
         super(FloatField, self).__init__(**kwargs)
 
     def to_python(self, value):
-        return float(value)
+        try:
+            value = float(value)
+        except ValueError:
+            pass
+        return value
 
     def validate(self, value):
         if isinstance(value, int):
@@ -214,9 +223,14 @@ class DecimalField(BaseField):
         super(DecimalField, self).__init__(**kwargs)
 
     def to_python(self, value):
+        original_value = value
         if not isinstance(value, basestring):
             value = unicode(value)
-        return decimal.Decimal(value)
+        try:
+            value = decimal.Decimal(value)
+        except ValueError:
+            return original_value
+        return value
 
     def to_mongo(self, value):
         return unicode(value)
@@ -244,7 +258,11 @@ class BooleanField(BaseField):
     """
 
     def to_python(self, value):
-        return bool(value)
+        try:
+            value = bool(value)
+        except ValueError:
+            pass
+        return value
 
     def validate(self, value):
         if not isinstance(value, bool):
@@ -375,6 +393,8 @@ class ComplexDateTimeField(StringField):
         data = super(ComplexDateTimeField, self).__get__(instance, owner)
         if data == None:
             return datetime.datetime.now()
+        if isinstance(data, datetime.datetime):
+            return data
         return self._convert_from_string(data)
 
     def __set__(self, instance, value):
@@ -387,7 +407,11 @@ class ComplexDateTimeField(StringField):
                        'ComplexDateTimeField')
 
     def to_python(self, value):
-        return self._convert_from_string(value)
+        original_value = value
+        try:
+            return self._convert_from_string(value)
+        except:
+            return original_value
 
     def to_mongo(self, value):
         return self._convert_from_datetime(value)
@@ -451,8 +475,9 @@ class GenericEmbeddedDocumentField(BaseField):
 
     Only valid values are subclasses of :class:`~mongoengine.EmbeddedDocument`.
 
-    .. note:: You can use the choices param to limit the acceptable
-    EmbeddedDocument types
+    .. note ::
+        You can use the choices param to limit the acceptable
+        EmbeddedDocument types
     """
 
     def prepare_query_value(self, op, value):
@@ -670,7 +695,8 @@ class ReferenceField(BaseField):
       * NULLIFY     - Updates the reference to null.
       * CASCADE     - Deletes the documents associated with the reference.
       * DENY        - Prevent the deletion of the reference object.
-      * PULL        - Pull the reference from a :class:`~mongoengine.ListField` of references
+      * PULL        - Pull the reference from a :class:`~mongoengine.ListField`
+                      of references
 
     Alternative syntax for registering delete rules (useful when implementing
     bi-directional delete rules)
@@ -686,9 +712,12 @@ class ReferenceField(BaseField):
     .. versionchanged:: 0.5 added `reverse_delete_rule`
     """
 
-    def __init__(self, document_type, reverse_delete_rule=DO_NOTHING, **kwargs):
+    def __init__(self, document_type, dbref=None,
+                 reverse_delete_rule=DO_NOTHING, **kwargs):
         """Initialises the Reference Field.
 
+        :param dbref:  Store the reference as :class:`~pymongo.dbref.DBRef`
+          or as the :class:`~pymongo.objectid.ObjectId`.id .
         :param reverse_delete_rule: Determines what to do when the referring
           object is deleted
         """
@@ -696,6 +725,13 @@ class ReferenceField(BaseField):
             if not issubclass(document_type, (Document, basestring)):
                 self.error('Argument to ReferenceField constructor must be a '
                            'document class or a string')
+
+        if dbref is None:
+            msg = ("ReferenceFields will default to using ObjectId "
+                   " strings in 0.8, set DBRef=True if this isn't desired")
+            warnings.warn(msg, FutureWarning)
+
+        self.dbref = dbref if dbref is not None else True  # To change in 0.8
         self.document_type_obj = document_type
         self.reverse_delete_rule = reverse_delete_rule
         super(ReferenceField, self).__init__(**kwargs)
@@ -718,8 +754,9 @@ class ReferenceField(BaseField):
 
         # Get value from document instance if available
         value = instance._data.get(self.name)
+
         # Dereference DBRefs
-        if isinstance(value, (DBRef)):
+        if isinstance(value, DBRef):
             value = self.document_type._get_db().dereference(value)
             if value is not None:
                 instance._data[self.name] = self.document_type._from_son(value)
@@ -728,6 +765,10 @@ class ReferenceField(BaseField):
 
     def to_mongo(self, document):
         if isinstance(document, DBRef):
+            if not self.dbref:
+                return "%s" % DBRef.id
+            return document
+        elif not self.dbref and isinstance(document, basestring):
             return document
 
         id_field_name = self.document_type._meta['id_field']
@@ -735,7 +776,7 @@ class ReferenceField(BaseField):
 
         if isinstance(document, Document):
             # We need the id from the saved object to create the DBRef
-            id_ = document.id
+            id_ = document.pk
             if id_ is None:
                 self.error('You can only reference documents once they have'
                            ' been saved to the database')
@@ -743,18 +784,30 @@ class ReferenceField(BaseField):
             id_ = document
 
         id_ = id_field.to_mongo(id_)
-        collection = self.document_type._get_collection_name()
-        return DBRef(collection, id_)
+        if self.dbref:
+            collection = self.document_type._get_collection_name()
+            return DBRef(collection, id_)
+
+        return "%s" % id_
+
+    def to_python(self, value):
+        """Convert a MongoDB-compatible type to a Python type.
+        """
+        if (not self.dbref and
+            not isinstance(value, (DBRef, Document, EmbeddedDocument))):
+            collection = self.document_type._get_collection_name()
+            value = DBRef(collection, self.document_type.id.to_python(value))
+        return value
 
     def prepare_query_value(self, op, value):
         if value is None:
             return None
-
         return self.to_mongo(value)
 
     def validate(self, value):
+
         if not isinstance(value, (self.document_type, DBRef)):
-            self.error('A ReferenceField only accepts DBRef')
+            self.error("A ReferenceField only accepts DBRef or documents")
 
         if isinstance(value, Document) and value.id is None:
             self.error('You can only reference documents once they have been '
@@ -768,10 +821,12 @@ class GenericReferenceField(BaseField):
     """A reference to *any* :class:`~mongoengine.document.Document` subclass
     that will be automatically dereferenced on access (lazily).
 
-    .. note:: Any documents used as a generic reference must be registered in the
-    document registry.  Importing the model will automatically register it.
+    .. note ::
+        * Any documents used as a generic reference must be registered in the
+          document registry.  Importing the model will automatically register
+          it.
 
-    .. note:: You can use the choices param to limit the acceptable Document types
+        * You can use the choices param to limit the acceptable Document types
 
     .. versionadded:: 0.3
     """
@@ -842,12 +897,20 @@ class BinaryField(BaseField):
         self.max_bytes = max_bytes
         super(BinaryField, self).__init__(**kwargs)
 
+    def __set__(self, instance, value):
+        """Handle bytearrays in python 3.1"""
+        if PY3 and isinstance(value, bytearray):
+            value = bin_type(value)
+        return super(BinaryField, self).__set__(instance, value)
+
     def to_mongo(self, value):
         return Binary(value)
 
     def validate(self, value):
-        if not isinstance(value, (basestring, Binary)):
-            self.error('BinaryField only accepts string or bson Binary values')
+        if not isinstance(value, (bin_type, txt_type, Binary)):
+            self.error("BinaryField only accepts instances of "
+                       "(%s, %s, Binary)" % (
+                        bin_type.__name__, txt_type.__name__))
 
         if self.max_bytes is not None and len(value) > self.max_bytes:
             self.error('Binary value is too long')
@@ -903,11 +966,13 @@ class GridFSProxy(object):
     def __repr__(self):
         return '<%s: %s>' % (self.__class__.__name__, self.grid_id)
 
-    def __cmp__(self, other):
-        if not isinstance(other, GridFSProxy):
-            return -1
-        return cmp((self.grid_id, self.collection_name, self.db_alias),
-                   (other.grid_id, other.collection_name, other.db_alias))
+    def __eq__(self, other):
+        if isinstance(other, GridFSProxy):
+            return  ((self.grid_id == other.grid_id) and
+                     (self.collection_name == other.collection_name) and
+                     (self.db_alias == other.db_alias))
+        else:
+            return False
 
     @property
     def fs(self):
@@ -1020,7 +1085,8 @@ class FileField(BaseField):
 
     def __set__(self, instance, value):
         key = self.name
-        if (hasattr(value, 'read') and not isinstance(value, GridFSProxy)) or isinstance(value, basestring):
+        if ((hasattr(value, 'read') and not
+             isinstance(value, GridFSProxy)) or isinstance(value, str_types)):
             # using "FileField() = file/string" notation
             grid_file = instance._data.get(self.name)
             # If a file already exists, delete it
@@ -1076,6 +1142,7 @@ class ImageGridFsProxy(GridFSProxy):
 
         try:
             img = Image.open(file_obj)
+            img_format = img.format
         except:
             raise ValidationError('Invalid image')
 
@@ -1110,20 +1177,20 @@ class ImageGridFsProxy(GridFSProxy):
 
         if thumbnail:
             thumb_id = self._put_thumbnail(thumbnail,
-                                          img.format)
+                                          img_format)
         else:
             thumb_id = None
 
         w, h = img.size
 
         io = StringIO()
-        img.save(io, img.format)
+        img.save(io, img_format)
         io.seek(0)
 
         return super(ImageGridFsProxy, self).put(io,
                                                  width=w,
                                                  height=h,
-                                                 format=img.format,
+                                                 format=img_format,
                                                  thumbnail_id=thumb_id,
                                                  **kwargs)
 
@@ -1209,11 +1276,15 @@ class ImageField(FileField):
         params_size = ('width', 'height', 'force')
         extra_args = dict(size=size, thumbnail_size=thumbnail_size)
         for att_name, att in extra_args.items():
-            if att and (isinstance(att, tuple) or isinstance(att, list)):
-                setattr(self, att_name, dict(
-                        map(None, params_size, att)))
-            else:
-                setattr(self, att_name, None)
+            value = None
+            if isinstance(att, (tuple, list)):
+                if PY3:
+                    value = dict(itertools.zip_longest(params_size, att,
+                                                        fillvalue=None))
+                else:
+                    value = dict(map(None, params_size, att))
+
+            setattr(self, att_name, value)
 
         super(ImageField, self).__init__(
             collection_name=collection_name,
@@ -1255,18 +1326,19 @@ class SequenceField(IntField):
 
     .. versionadded:: 0.5
     """
-    def __init__(self, collection_name=None, db_alias = None, *args, **kwargs):
+    def __init__(self, collection_name=None, db_alias = None, sequence_name = None, *args, **kwargs):
         self.collection_name = collection_name or 'mongoengine.counters'
         self.db_alias = db_alias or DEFAULT_CONNECTION_NAME
+        self.sequence_name = sequence_name
         return super(SequenceField, self).__init__(*args, **kwargs)
 
     def generate_new_value(self):
         """
         Generate and Increment the counter
         """
-        sequence_id = "{0}.{1}".format(self.owner_document._get_collection_name(),
-                                       self.name)
-        collection = get_db(alias = self.db_alias )[self.collection_name]
+        sequence_name = self.sequence_name or self.owner_document._get_collection_name()
+        sequence_id = "%s.%s" % (sequence_name, self.name)
+        collection = get_db(alias=self.db_alias)[self.collection_name]
         counter = collection.find_and_modify(query={"_id": sequence_id},
                                              update={"$inc": {"next": 1}},
                                              new=True,
@@ -1327,10 +1399,14 @@ class UUIDField(BaseField):
         super(UUIDField, self).__init__(**kwargs)
 
     def to_python(self, value):
-        if not self.binary:
-            if not isinstance(value, basestring):
-                value = unicode(value)
-            return uuid.UUID(value)
+        if not self._binary:
+            original_value = value
+            try:
+                if not isinstance(value, basestring):
+                    value = unicode(value)
+                return uuid.UUID(value)
+            except:
+                return original_value
         return value
 
     def to_mongo(self, value):

mongoengine/python_support.py

@@ -0,0 +1,61 @@
+"""Helper functions and types to aid with Python 2.5 - 3 support."""
+
+import sys
+
+PY3 = sys.version_info[0] == 3
+PY25 = sys.version_info[:2] == (2, 5)
+UNICODE_KWARGS = int(''.join([str(x) for x in sys.version_info[:3]])) > 264
+
+if PY3:
+    import codecs
+    from io import BytesIO as StringIO
+    # return s converted to binary.  b('test') should be equivalent to b'test'
+    def b(s):
+        return codecs.latin_1_encode(s)[0]
+
+    bin_type = bytes
+    txt_type   = str
+else:
+    try:
+        from cStringIO import StringIO
+    except ImportError:
+        from StringIO import StringIO
+
+    # Conversion to binary only necessary in Python 3
+    def b(s):
+        return s
+
+    bin_type = str
+    txt_type = unicode
+
+str_types = (bin_type, txt_type)
+
+if PY25:
+    def product(*args, **kwds):
+        pools = map(tuple, args) * kwds.get('repeat', 1)
+        result = [[]]
+        for pool in pools:
+            result = [x + [y] for x in result for y in pool]
+        for prod in result:
+            yield tuple(prod)
+    reduce = reduce
+else:
+    from itertools import product
+    from functools import reduce
+
+
+# For use with Python 2.5
+# converts all keys from unicode to str for d and all nested dictionaries
+def to_str_keys_recursive(d):
+    if isinstance(d, list):
+        for val in d:
+            if isinstance(val, (dict, list)):
+                to_str_keys_recursive(val)
+    elif isinstance(d, dict):
+        for key, val in d.items():
+            if isinstance(val, (dict, list)):
+                to_str_keys_recursive(val)
+            if isinstance(key, unicode):
+                d[str(key)] = d.pop(key)
+    else:
+        raise ValueError("non list/dict parameter not allowed")

mongoengine/queryset.py

@@ -4,8 +4,11 @@ import copy
 import itertools
 import operator
 
+from collections import defaultdict
 from functools import partial
 
+from mongoengine.python_support import product, reduce
+
 import pymongo
 from bson.code import Code
 
@@ -42,6 +45,10 @@ class OperationError(Exception):
     pass
 
 
+class NotUniqueError(OperationError):
+    pass
+
+
 RE_TYPE = type(re.compile(''))
 
 
@@ -120,7 +127,7 @@ class QueryTreeTransformerVisitor(QNodeVisitor):
             # the necessary parts. Then for each $or part, create a new query
             # that ANDs the necessary part with the $or part.
             clauses = []
-            for or_group in itertools.product(*or_groups):
+            for or_group in product(*or_groups):
                 q_object = reduce(lambda a, b: a & b, and_parts, Q())
                 q_object = reduce(lambda a, b: a & b, or_group, q_object)
                 clauses.append(q_object)
@@ -211,7 +218,7 @@ class QNode(object):
     def _combine(self, other, operation):
         """Combine this node with another node into a QCombination object.
         """
-        if other.empty:
+        if getattr(other, 'empty', True):
             return self
 
         if self.empty:
@@ -329,6 +336,7 @@ class QuerySet(object):
     """
 
     __already_indexed = set()
+    __dereference = False
 
     def __init__(self, document, collection):
         self._document = document
@@ -348,7 +356,7 @@ class QuerySet(object):
 
         # If inheritance is allowed, only return instances and instances of
         # subclasses of the class being used
-        if document._meta.get('allow_inheritance'):
+        if document._meta.get('allow_inheritance') != False:
             self._initial_query = {'_types': self._document._class_name}
             self._loaded_fields = QueryFieldList(always_include=['_cls'])
         self._cursor_obj = None
@@ -390,12 +398,13 @@ class QuerySet(object):
             or a **-** to determine the index ordering
         """
         index_spec = QuerySet._build_index_spec(self._document, key_or_list)
-        self._collection.ensure_index(
-            index_spec['fields'],
-            drop_dups=drop_dups,
-            background=background,
-            sparse=index_spec.get('sparse', False),
-            unique=index_spec.get('unique', False))
+        index_spec = index_spec.copy()
+        fields = index_spec.pop('fields')
+        index_spec['drop_dups'] = drop_dups
+        index_spec['background'] = background
+        index_spec.update(kwargs)
+
+        self._collection.ensure_index(fields, **index_spec)
         return self
 
     def __call__(self, q_obj=None, class_check=True, slave_okay=False, **query):
@@ -438,7 +447,7 @@ class QuerySet(object):
         """
         background = self._document._meta.get('index_background', False)
         drop_dups = self._document._meta.get('index_drop_dups', False)
-        index_opts = self._document._meta.get('index_opts', {})
+        index_opts = self._document._meta.get('index_opts') or {}
         index_types = self._document._meta.get('index_types', True)
 
         # determine if an index which we are creating includes
@@ -446,6 +455,7 @@ class QuerySet(object):
         # an extra index on _type, as mongodb will use the existing
         # index to service queries against _type
         types_indexed = False
+
         def includes_types(fields):
             first_field = None
             if len(fields):
@@ -462,13 +472,15 @@ class QuerySet(object):
                 background=background, drop_dups=drop_dups, **index_opts)
 
         # Ensure document-defined indexes are created
-        if self._document._meta['indexes']:
-            for spec in self._document._meta['indexes']:
-                types_indexed = types_indexed or includes_types(spec['fields'])
+        if self._document._meta['index_specs']:
+            index_spec = self._document._meta['index_specs']
+            for spec in index_spec:
+                spec = spec.copy()
+                fields = spec.pop('fields')
+                types_indexed = types_indexed or includes_types(fields)
                 opts = index_opts.copy()
-                opts['unique'] = spec.get('unique', False)
-                opts['sparse'] = spec.get('sparse', False)
-                self._collection.ensure_index(spec['fields'],
+                opts.update(spec)
+                self._collection.ensure_index(fields,
                     background=background, **opts)
 
         # If _types is being used (for polymorphism), it needs an index,
@@ -494,8 +506,17 @@ class QuerySet(object):
 
         index_list = []
         direction = None
-        use_types = doc_cls._meta.get('allow_inheritance', True)
+
+        allow_inheritance = doc_cls._meta.get('allow_inheritance') != False
+
+        # If sparse - dont include types
+        use_types = allow_inheritance and not spec.get('sparse', False)
+
         for key in spec['fields']:
+            # If inherited spec continue
+            if isinstance(key, (list, tuple)):
+                continue
+
             # Get ASCENDING direction from +, DESCENDING from -, and GEO2D from *
             direction = pymongo.ASCENDING
             if key.startswith("-"):
@@ -510,24 +531,23 @@ class QuerySet(object):
             parts = key.split('.')
             if parts in (['pk'], ['id'], ['_id']):
                 key = '_id'
+                fields = []
             else:
                 fields = QuerySet._lookup_field(doc_cls, parts)
-                parts = [field if field == '_id' else field.db_field for field in fields]
+                parts = [field if field == '_id' else field.db_field
+                         for field in fields]
                 key = '.'.join(parts)
             index_list.append((key, direction))
 
-            # If sparse - dont include types
-            if spec.get('sparse', False):
-                use_types = False
-
             # Check if a list field is being used, don't use _types if it is
             if use_types and not all(f._index_with_types for f in fields):
                 use_types = False
 
         # If _types is being used, prepend it to every specified index
         index_types = doc_cls._meta.get('index_types', True)
-        allow_inheritance = doc_cls._meta.get('allow_inheritance')
-        if spec.get('types', index_types) and allow_inheritance and use_types and direction is not pymongo.GEO2D:
+
+        if (spec.get('types', index_types) and use_types
+            and direction is not pymongo.GEO2D):
             index_list.insert(0, ('_types', 1))
 
         spec['fields'] = index_list
@@ -600,7 +620,6 @@ class QuerySet(object):
 
             if self._hint != -1:
                 self._cursor_obj.hint(self._hint)
-
         return self._cursor_obj
 
     @classmethod
@@ -678,6 +697,7 @@ class QuerySet(object):
         custom_operators = ['match']
 
         mongo_query = {}
+        merge_query = defaultdict(list)
         for key, value in query.items():
             if key == "__raw__":
                 mongo_query.update(value)
@@ -765,8 +785,23 @@ class QuerySet(object):
             key = '.'.join(parts)
             if op is None or key not in mongo_query:
                 mongo_query[key] = value
-            elif key in mongo_query and isinstance(mongo_query[key], dict):
-                mongo_query[key].update(value)
+            elif key in mongo_query:
+                if key in mongo_query and isinstance(mongo_query[key], dict):
+                    mongo_query[key].update(value)
+                else:
+                    # Store for manually merging later
+                    merge_query[key].append(value)
+
+        # The queryset has been filter in such a way we must manually merge
+        for k, v in merge_query.items():
+            merge_query[k].append(mongo_query[k])
+            del mongo_query[k]
+            if isinstance(v, list):
+                value = [{k:val} for val in v]
+                if '$and' in mongo_query.keys():
+                    mongo_query['$and'].append(value)
+                else:
+                    mongo_query['$and'] = value
 
         return mongo_query
 
@@ -900,8 +935,11 @@ class QuerySet(object):
             ids = self._collection.insert(raw, **write_options)
         except pymongo.errors.OperationFailure, err:
             message = 'Could not save document (%s)'
-            if u'duplicate key' in unicode(err):
+            if re.match('^E1100[01] duplicate key', unicode(err)):
+                # E11000 - duplicate key error index
+                # E11001 - duplicate key on update
                 message = u'Tried to save duplicate unique keys (%s)'
+                raise NotUniqueError(message % unicode(err))
             raise OperationError(message % unicode(err))
 
         if not load_bulk:
@@ -1001,6 +1039,8 @@ class QuerySet(object):
                          :class:`~bson.code.Code` or string
         :param output: output collection name, if set to 'inline' will try to
                        use :class:`~pymongo.collection.Collection.inline_map_reduce`
+                       This can also be a dictionary containing output options
+                       see: http://docs.mongodb.org/manual/reference/commands/#mapReduce
         :param finalize_f: finalize function, an optional function that
                            performs any post-reduction processing.
         :param scope: values to insert into map/reduce global scope. Optional.
@@ -1152,9 +1192,10 @@ class QuerySet(object):
 
         .. versionadded:: 0.4
         .. versionchanged:: 0.5 - Fixed handling references
+        .. versionchanged:: 0.6 - Improved db_field refrence handling
         """
-        from dereference import DeReference
-        return DeReference()(self._cursor.distinct(field), 1)
+        return self._dereference(self._cursor.distinct(field), 1,
+                                 name=field, instance=self._document)
 
     def only(self, *fields):
         """Load only a subset of this document's fields. ::
@@ -1309,9 +1350,16 @@ class QuerySet(object):
         """
         doc = self._document
 
+        # Handle deletes where skips or limits have been applied
+        if self._skip or self._limit:
+            for doc in self:
+                doc.delete()
+            return
+
+        delete_rules = doc._meta.get('delete_rules') or {}
         # Check for DENY rules before actually deleting/nullifying any other
         # references
-        for rule_entry in doc._meta['delete_rules']:
+        for rule_entry in delete_rules:
             document_cls, field_name = rule_entry
             rule = doc._meta['delete_rules'][rule_entry]
             if rule == DENY and document_cls.objects(**{field_name + '__in': self}).count() > 0:
@@ -1319,12 +1367,14 @@ class QuerySet(object):
                         (document_cls.__name__, field_name)
                 raise OperationError(msg)
 
-        for rule_entry in doc._meta['delete_rules']:
+        for rule_entry in delete_rules:
             document_cls, field_name = rule_entry
             rule = doc._meta['delete_rules'][rule_entry]
             if rule == CASCADE:
                 ref_q = document_cls.objects(**{field_name + '__in': self})
-                if doc != document_cls or (doc == document_cls and ref_q.count() > 0):
+                ref_q_count = ref_q.count()
+                if (doc != document_cls and ref_q_count > 0
+                    or (doc == document_cls and ref_q_count > 0)):
                     ref_q.delete(safe=safe)
             elif rule == NULLIFY:
                 document_cls.objects(**{field_name + '__in': self}).update(
@@ -1854,10 +1904,16 @@ class QuerySet(object):
 
         .. versionadded:: 0.5
         """
-        from dereference import DeReference
         # Make select related work the same for querysets
         max_depth += 1
-        return DeReference()(self, max_depth=max_depth)
+        return self._dereference(self, max_depth=max_depth)
+
+    @property
+    def _dereference(self):
+        if not self.__dereference:
+            from dereference import DeReference
+            self.__dereference = DeReference()  # Cached
+        return self.__dereference
 
 
 class QuerySetManager(object):
@@ -1889,7 +1945,7 @@ class QuerySetManager(object):
             return self
 
         # owner is the document that contains the QuerySetManager
-        queryset_class = owner._meta['queryset_class'] or QuerySet
+        queryset_class = owner._meta.get('queryset_class') or QuerySet
         queryset = queryset_class(owner, owner._get_collection())
         if self.get_queryset:
             arg_count = self.get_queryset.func_code.co_argcount

python-mongoengine.spec

@@ -5,7 +5,7 @@
 %define srcname mongoengine
 
 Name:           python-%{srcname}
-Version:        0.6.19
+Version:        0.7.3
 Release:        1%{?dist}
 Summary:        A Python Document-Object Mapper for working with MongoDB
 

setup.cfg

@@ -1,13 +1,11 @@
-[aliases]
-test = nosetests
-
 [nosetests]
-verbosity = 2
+verbosity = 3
 detailed-errors = 1
 #with-coverage = 1
 #cover-erase = 1
 #cover-html = 1
 #cover-html-dir = ../htmlcov
 #cover-package = mongoengine
+py3where = build
 where = tests
-#tests = test_bugfix.py
+#tests =  test_bugfix.py

setup.py

@@ -1,27 +1,35 @@
-from setuptools import setup, find_packages
 import os
+import sys
+from setuptools import setup, find_packages
 
-DESCRIPTION = "A Python Document-Object Mapper for working with MongoDB"
+# Hack to silence atexit traceback in newer python versions
+try:
+    import multiprocessing
+except ImportError:
+    pass
 
+DESCRIPTION = """MongoEngine is a Python Object-Document
+Mapper for working with MongoDB."""
 LONG_DESCRIPTION = None
 try:
     LONG_DESCRIPTION = open('README.rst').read()
 except:
     pass
 
+
 def get_version(version_tuple):
-    version = '%s.%s' % (version_tuple[0], version_tuple[1])
-    if version_tuple[2]:
-        version = '%s.%s' % (version, version_tuple[2])
-    return version
+    if not isinstance(version_tuple[-1], int):
+        return '.'.join(map(str, version_tuple[:-1])) + version_tuple[-1]
+    return '.'.join(map(str, version_tuple))
 
 # Dirty hack to get version number from monogengine/__init__.py - we can't
 # import it as it depends on PyMongo and PyMongo isn't installed until this
 # file is read
 init = os.path.join(os.path.dirname(__file__), 'mongoengine', '__init__.py')
-version_line = filter(lambda l: l.startswith('VERSION'), open(init))[0]
+version_line = list(filter(lambda l: l.startswith('VERSION'), open(init)))[0]
+
 VERSION = get_version(eval(version_line.split('=')[-1]))
-print VERSION
+print(VERSION)
 
 CLASSIFIERS = [
     'Development Status :: 4 - Beta',
@@ -29,18 +37,38 @@ CLASSIFIERS = [
     'License :: OSI Approved :: MIT License',
     'Operating System :: OS Independent',
     'Programming Language :: Python',
+    "Programming Language :: Python :: 2",
+    "Programming Language :: Python :: 2.5",
+    "Programming Language :: Python :: 2.6",
+    "Programming Language :: Python :: 2.7",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.1",
+    "Programming Language :: Python :: 3.2",
+    "Programming Language :: Python :: Implementation :: CPython",
     'Topic :: Database',
     'Topic :: Software Development :: Libraries :: Python Modules',
 ]
 
+extra_opts = {}
+if sys.version_info[0] == 3:
+    extra_opts['use_2to3'] = True
+    extra_opts['tests_require'] = ['nose', 'coverage', 'blinker']
+    extra_opts['packages'] = find_packages(exclude=('tests',))
+    if "test" in sys.argv or "nosetests" in sys.argv:
+        extra_opts['packages'].append("tests")
+        extra_opts['package_data'] = {"tests": ["mongoengine.png"]}
+else:
+    extra_opts['tests_require'] = ['nose', 'coverage', 'blinker', 'django>=1.3', 'PIL']
+    extra_opts['packages'] = find_packages(exclude=('tests',))
+
 setup(name='mongoengine',
       version=VERSION,
-      packages=find_packages(exclude=('tests',)),
       author='Harry Marr',
       author_email='harry.marr@{nospam}gmail.com',
       maintainer="Ross Lawley",
       maintainer_email="ross.lawley@{nospam}gmail.com",
       url='http://mongoengine.org/',
+      download_url='https://github.com/MongoEngine/mongoengine/tarball/master',
       license='MIT',
       include_package_data=True,
       description=DESCRIPTION,
@@ -48,5 +76,6 @@ setup(name='mongoengine',
       platforms=['any'],
       classifiers=CLASSIFIERS,
       install_requires=['pymongo'],
-      tests_require=['nose', 'coverage', 'blinker', 'django>=1.3', 'PIL']
+      test_suite='nose.collector',
+      **extra_opts
 )

tests/test_all_warnings.py

@@ -0,0 +1,96 @@
+import unittest
+import warnings
+
+from mongoengine import *
+from mongoengine.tests import query_counter
+
+
+class TestWarnings(unittest.TestCase):
+
+    def setUp(self):
+        conn = connect(db='mongoenginetest')
+        self.warning_list = []
+        self.showwarning_default = warnings.showwarning
+        warnings.showwarning = self.append_to_warning_list
+
+    def append_to_warning_list(self, message, category, *args):
+        self.warning_list.append({"message": message,
+                                  "category": category})
+
+    def tearDown(self):
+        # restore default handling of warnings
+        warnings.showwarning = self.showwarning_default
+
+    def test_allow_inheritance_future_warning(self):
+        """Add FutureWarning for future allow_inhertiance default change.
+        """
+
+        class SimpleBase(Document):
+            a = IntField()
+
+        class InheritedClass(SimpleBase):
+            b = IntField()
+
+        InheritedClass()
+        self.assertEqual(len(self.warning_list), 1)
+        warning = self.warning_list[0]
+        self.assertEqual(FutureWarning, warning["category"])
+        self.assertTrue("InheritedClass" in str(warning["message"]))
+
+    def test_dbref_reference_field_future_warning(self):
+
+        class Person(Document):
+            name = StringField()
+            parent = ReferenceField('self')
+
+        Person.drop_collection()
+
+        p1 = Person()
+        p1.parent = None
+        p1.save()
+
+        p2 = Person(name="Wilson Jr")
+        p2.parent = p1
+        p2.save(cascade=False)
+
+        self.assertEqual(len(self.warning_list), 1)
+        warning = self.warning_list[0]
+        self.assertEqual(FutureWarning, warning["category"])
+        self.assertTrue("ReferenceFields will default to using ObjectId"
+                        in str(warning["message"]))
+
+    def test_document_save_cascade_future_warning(self):
+
+        class Person(Document):
+            name = StringField()
+            parent = ReferenceField('self')
+
+        Person.drop_collection()
+
+        p1 = Person(name="Wilson Snr")
+        p1.parent = None
+        p1.save()
+
+        p2 = Person(name="Wilson Jr")
+        p2.parent = p1
+        p2.parent.name = "Poppa Wilson"
+        p2.save()
+
+        self.assertEqual(len(self.warning_list), 1)
+        warning = self.warning_list[0]
+        self.assertEqual(FutureWarning, warning["category"])
+        self.assertTrue("Cascading saves will default to off in 0.8"
+                        in str(warning["message"]))
+
+    def test_document_collection_syntax_warning(self):
+
+        class NonAbstractBase(Document):
+            pass
+
+        class InheritedDocumentFailTest(NonAbstractBase):
+            meta = {'collection': 'fail'}
+
+        warning = self.warning_list[0]
+        self.assertEqual(SyntaxWarning, warning["category"])
+        self.assertEqual('non_abstract_base',
+                         InheritedDocumentFailTest._get_collection_name())

tests/test_dereference.py

@@ -1,5 +1,8 @@
+from __future__ import with_statement
 import unittest
 
+from bson import DBRef
+
 from mongoengine import *
 from mongoengine.connection import get_db
 from mongoengine.tests import query_counter
@@ -63,6 +66,130 @@ class FieldTest(unittest.TestCase):
         User.drop_collection()
         Group.drop_collection()
 
+    def test_list_item_dereference_dref_false(self):
+        """Ensure that DBRef items in ListFields are dereferenced.
+        """
+        class User(Document):
+            name = StringField()
+
+        class Group(Document):
+            members = ListField(ReferenceField(User, dbref=False))
+
+        User.drop_collection()
+        Group.drop_collection()
+
+        for i in xrange(1, 51):
+            user = User(name='user %s' % i)
+            user.save()
+
+        group = Group(members=User.objects)
+        group.save()
+
+        with query_counter() as q:
+            self.assertEqual(q, 0)
+
+            group_obj = Group.objects.first()
+            self.assertEqual(q, 1)
+
+            [m for m in group_obj.members]
+            self.assertEqual(q, 2)
+
+        # Document select_related
+        with query_counter() as q:
+            self.assertEqual(q, 0)
+
+            group_obj = Group.objects.first().select_related()
+
+            self.assertEqual(q, 2)
+            [m for m in group_obj.members]
+            self.assertEqual(q, 2)
+
+        # Queryset select_related
+        with query_counter() as q:
+            self.assertEqual(q, 0)
+            group_objs = Group.objects.select_related()
+            self.assertEqual(q, 2)
+            for group_obj in group_objs:
+                [m for m in group_obj.members]
+                self.assertEqual(q, 2)
+
+        User.drop_collection()
+        Group.drop_collection()
+
+    def test_handle_old_style_references(self):
+        """Ensure that DBRef items in ListFields are dereferenced.
+        """
+        class User(Document):
+            name = StringField()
+
+        class Group(Document):
+            members = ListField(ReferenceField(User, dbref=True))
+
+        User.drop_collection()
+        Group.drop_collection()
+
+        for i in xrange(1, 26):
+            user = User(name='user %s' % i)
+            user.save()
+
+        group = Group(members=User.objects)
+        group.save()
+
+        group = Group._get_collection().find_one()
+
+        # Update the model to change the reference
+        class Group(Document):
+            members = ListField(ReferenceField(User, dbref=False))
+
+        group = Group.objects.first()
+        group.members.append(User(name="String!").save())
+        group.save()
+
+        group = Group.objects.first()
+        self.assertEqual(group.members[0].name, 'user 1')
+        self.assertEqual(group.members[-1].name, 'String!')
+
+    def test_migrate_references(self):
+        """Example of migrating ReferenceField storage
+        """
+
+        # Create some sample data
+        class User(Document):
+            name = StringField()
+
+        class Group(Document):
+            author = ReferenceField(User, dbref=True)
+            members = ListField(ReferenceField(User, dbref=True))
+
+        User.drop_collection()
+        Group.drop_collection()
+
+        user = User(name="Ross").save()
+        group = Group(author=user, members=[user]).save()
+
+        raw_data = Group._get_collection().find_one()
+        self.assertTrue(isinstance(raw_data['author'], DBRef))
+        self.assertTrue(isinstance(raw_data['members'][0], DBRef))
+
+        # Migrate the model definition
+        class Group(Document):
+            author = ReferenceField(User, dbref=False)
+            members = ListField(ReferenceField(User, dbref=False))
+
+        # Migrate the data
+        for g in Group.objects():
+            g.author = g.author
+            g.members = g.members
+            g.save()
+
+        group = Group.objects.first()
+        self.assertEqual(group.author, user)
+        self.assertEqual(group.members, [user])
+
+        raw_data = Group._get_collection().find_one()
+        self.assertTrue(isinstance(raw_data['author'], basestring))
+        self.assertTrue(isinstance(raw_data['members'][0], basestring))
+
     def test_recursive_reference(self):
         """Ensure that ReferenceFields can reference their own documents.
         """
@@ -109,10 +236,10 @@ class FieldTest(unittest.TestCase):
             peter = Employee.objects.with_id(peter.id).select_related()
             self.assertEqual(q, 2)
 
-            self.assertEquals(peter.boss, bill)
+            self.assertEqual(peter.boss, bill)
             self.assertEqual(q, 2)
 
-            self.assertEquals(peter.friends, friends)
+            self.assertEqual(peter.friends, friends)
             self.assertEqual(q, 2)
 
         # Queryset select_related
@@ -123,10 +250,10 @@ class FieldTest(unittest.TestCase):
             self.assertEqual(q, 2)
 
             for employee in employees:
-                self.assertEquals(employee.boss, bill)
+                self.assertEqual(employee.boss, bill)
                 self.assertEqual(q, 2)
 
-                self.assertEquals(employee.friends, friends)
+                self.assertEqual(employee.friends, friends)
                 self.assertEqual(q, 2)
 
     def test_circular_reference(self):
@@ -160,7 +287,7 @@ class FieldTest(unittest.TestCase):
         daughter.relations.append(self_rel)
         daughter.save()
 
-        self.assertEquals("[<Person: Mother>, <Person: Daughter>]", "%s" % Person.objects())
+        self.assertEqual("[<Person: Mother>, <Person: Daughter>]", "%s" % Person.objects())
 
     def test_circular_reference_on_self(self):
         """Ensure you can handle circular references
@@ -186,7 +313,7 @@ class FieldTest(unittest.TestCase):
         daughter.relations.append(daughter)
         daughter.save()
 
-        self.assertEquals("[<Person: Mother>, <Person: Daughter>]", "%s" % Person.objects())
+        self.assertEqual("[<Person: Mother>, <Person: Daughter>]", "%s" % Person.objects())
 
     def test_circular_tree_reference(self):
         """Ensure you can handle circular references with more than one level
@@ -228,7 +355,7 @@ class FieldTest(unittest.TestCase):
         anna.other.name = "Anna's friends"
         anna.save()
 
-        self.assertEquals(
+        self.assertEqual(
             "[<Person: Paul>, <Person: Maria>, <Person: Julia>, <Person: Anna>]",
             "%s" % Person.objects()
         )
@@ -781,8 +908,8 @@ class FieldTest(unittest.TestCase):
         root.save()
 
         root = root.reload()
-        self.assertEquals(root.children, [company])
-        self.assertEquals(company.parents, [root])
+        self.assertEqual(root.children, [company])
+        self.assertEqual(company.parents, [root])
 
     def test_dict_in_dbref_instance(self):
 
@@ -808,8 +935,8 @@ class FieldTest(unittest.TestCase):
         room_101.save()
 
         room = Room.objects.first().select_related()
-        self.assertEquals(room.staffs_with_position[0]['staff'], sarah)
-        self.assertEquals(room.staffs_with_position[1]['staff'], bob)
+        self.assertEqual(room.staffs_with_position[0]['staff'], sarah)
+        self.assertEqual(room.staffs_with_position[1]['staff'], bob)
 
     def test_document_reload_no_inheritance(self):
         class Foo(Document):
@@ -839,8 +966,8 @@ class FieldTest(unittest.TestCase):
         foo.save()
         foo.reload()
 
-        self.assertEquals(type(foo.bar), Bar)
-        self.assertEquals(type(foo.baz), Baz)
+        self.assertEqual(type(foo.bar), Bar)
+        self.assertEqual(type(foo.baz), Baz)
 
     def test_list_lookup_not_checked_in_map(self):
         """Ensure we dereference list data correctly
@@ -862,4 +989,4 @@ class FieldTest(unittest.TestCase):
 
         msg = Message.objects.get(id=1)
         self.assertEqual(0, msg.comments[0].id)
-        self.assertEqual(1, msg.comments[1].id)
+        self.assertEqual(1, msg.comments[1].id)

tests/test_django.py

@@ -1,24 +1,34 @@
-# -*- coding: utf-8 -*-
-
+from __future__ import with_statement
 import unittest
-
+from nose.plugins.skip import SkipTest
+from mongoengine.python_support import PY3
 from mongoengine import *
-from mongoengine.django.shortcuts import get_document_or_404
 
-from django.http import Http404
-from django.template import Context, Template
-from django.conf import settings
-from django.core.paginator import Paginator
+try:
+    from mongoengine.django.shortcuts import get_document_or_404
 
-settings.configure()
+    from django.http import Http404
+    from django.template import Context, Template
+    from django.conf import settings
+    from django.core.paginator import Paginator
 
-from django.contrib.sessions.tests import SessionTestsMixin
-from mongoengine.django.sessions import SessionStore, MongoSession
+    settings.configure()
+
+    from django.contrib.sessions.tests import SessionTestsMixin
+    from mongoengine.django.sessions import SessionStore, MongoSession
+except Exception, err:
+    if PY3:
+        SessionTestsMixin = type  # dummy value so no error
+        SessionStore = None  # dummy value so no error
+    else:
+        raise err
 
 
 class QuerySetTest(unittest.TestCase):
 
     def setUp(self):
+        if PY3:
+            raise SkipTest('django does not have Python 3 support')
         connect(db='mongoenginetest')
 
         class Person(Document):
@@ -99,6 +109,8 @@ class MongoDBSessionTest(SessionTestsMixin, unittest.TestCase):
     backend = SessionStore
 
     def setUp(self):
+        if PY3:
+            raise SkipTest('django does not have Python 3 support')
         connect(db='mongoenginetest')
         MongoSession.drop_collection()
         super(MongoDBSessionTest, self).setUp()

tests/test_dynamic_document.py

@@ -25,14 +25,14 @@ class DynamicDocTest(unittest.TestCase):
         p.name = "James"
         p.age = 34
 
-        self.assertEquals(p.to_mongo(),
+        self.assertEqual(p.to_mongo(),
             {"_types": ["Person"], "_cls": "Person",
              "name": "James", "age": 34}
         )
 
         p.save()
 
-        self.assertEquals(self.Person.objects.first().age, 34)
+        self.assertEqual(self.Person.objects.first().age, 34)
 
         # Confirm no changes to self.Person
         self.assertFalse(hasattr(self.Person, 'age'))
@@ -40,11 +40,11 @@ class DynamicDocTest(unittest.TestCase):
     def test_dynamic_document_delta(self):
         """Ensures simple dynamic documents can delta correctly"""
         p = self.Person(name="James", age=34)
-        self.assertEquals(p._delta(), ({'_types': ['Person'], 'age': 34, 'name': 'James', '_cls': 'Person'}, {}))
+        self.assertEqual(p._delta(), ({'_types': ['Person'], 'age': 34, 'name': 'James', '_cls': 'Person'}, {}))
 
         p.doc = 123
         del(p.doc)
-        self.assertEquals(p._delta(), ({'_types': ['Person'], 'age': 34, 'name': 'James', '_cls': 'Person'}, {'doc': 1}))
+        self.assertEqual(p._delta(), ({'_types': ['Person'], 'age': 34, 'name': 'James', '_cls': 'Person'}, {'doc': 1}))
 
     def test_change_scope_of_variable(self):
         """Test changing the scope of a dynamic field has no adverse effects"""
@@ -58,7 +58,7 @@ class DynamicDocTest(unittest.TestCase):
         p.save()
 
         p = self.Person.objects.get()
-        self.assertEquals(p.misc, {'hello': 'world'})
+        self.assertEqual(p.misc, {'hello': 'world'})
 
     def test_delete_dynamic_field(self):
         """Test deleting a dynamic field works"""
@@ -73,10 +73,10 @@ class DynamicDocTest(unittest.TestCase):
         p.save()
 
         p = self.Person.objects.get()
-        self.assertEquals(p.misc, {'hello': 'world'})
+        self.assertEqual(p.misc, {'hello': 'world'})
         collection = self.db[self.Person._get_collection_name()]
         obj = collection.find_one()
-        self.assertEquals(sorted(obj.keys()), ['_cls', '_id', '_types', 'misc', 'name'])
+        self.assertEqual(sorted(obj.keys()), ['_cls', '_id', '_types', 'misc', 'name'])
 
         del(p.misc)
         p.save()
@@ -85,7 +85,7 @@ class DynamicDocTest(unittest.TestCase):
         self.assertFalse(hasattr(p, 'misc'))
 
         obj = collection.find_one()
-        self.assertEquals(sorted(obj.keys()), ['_cls', '_id', '_types', 'name'])
+        self.assertEqual(sorted(obj.keys()), ['_cls', '_id', '_types', 'name'])
 
     def test_dynamic_document_queries(self):
         """Ensure we can query dynamic fields"""
@@ -94,10 +94,10 @@ class DynamicDocTest(unittest.TestCase):
         p.age = 22
         p.save()
 
-        self.assertEquals(1, self.Person.objects(age=22).count())
+        self.assertEqual(1, self.Person.objects(age=22).count())
         p = self.Person.objects(age=22)
         p = p.get()
-        self.assertEquals(22, p.age)
+        self.assertEqual(22, p.age)
 
     def test_complex_dynamic_document_queries(self):
         class Person(DynamicDocument):
@@ -117,8 +117,8 @@ class DynamicDocTest(unittest.TestCase):
         p2.age = 10
         p2.save()
 
-        self.assertEquals(Person.objects(age__icontains='ten').count(), 2)
-        self.assertEquals(Person.objects(age__gte=10).count(), 1)
+        self.assertEqual(Person.objects(age__icontains='ten').count(), 2)
+        self.assertEqual(Person.objects(age__gte=10).count(), 1)
 
     def test_complex_data_lookups(self):
         """Ensure you can query dynamic document dynamic fields"""
@@ -126,7 +126,7 @@ class DynamicDocTest(unittest.TestCase):
         p.misc = {'hello': 'world'}
         p.save()
 
-        self.assertEquals(1, self.Person.objects(misc__hello='world').count())
+        self.assertEqual(1, self.Person.objects(misc__hello='world').count())
 
     def test_inheritance(self):
         """Ensure that dynamic document plays nice with inheritance"""
@@ -146,8 +146,8 @@ class DynamicDocTest(unittest.TestCase):
         joe_bloggs.age = 20
         joe_bloggs.save()
 
-        self.assertEquals(1, self.Person.objects(age=20).count())
-        self.assertEquals(1, Employee.objects(age=20).count())
+        self.assertEqual(1, self.Person.objects(age=20).count())
+        self.assertEqual(1, Employee.objects(age=20).count())
 
         joe_bloggs = self.Person.objects.first()
         self.assertTrue(isinstance(joe_bloggs, Employee))
@@ -170,7 +170,7 @@ class DynamicDocTest(unittest.TestCase):
         embedded_1.list_field = ['1', 2, {'hello': 'world'}]
         doc.embedded_field = embedded_1
 
-        self.assertEquals(doc.to_mongo(), {"_types": ['Doc'], "_cls": "Doc",
+        self.assertEqual(doc.to_mongo(), {"_types": ['Doc'], "_cls": "Doc",
             "embedded_field": {
                 "_types": ['Embedded'], "_cls": "Embedded",
                 "string_field": "hello",
@@ -182,11 +182,11 @@ class DynamicDocTest(unittest.TestCase):
         doc.save()
 
         doc = Doc.objects.first()
-        self.assertEquals(doc.embedded_field.__class__, Embedded)
-        self.assertEquals(doc.embedded_field.string_field, "hello")
-        self.assertEquals(doc.embedded_field.int_field, 1)
-        self.assertEquals(doc.embedded_field.dict_field, {'hello': 'world'})
-        self.assertEquals(doc.embedded_field.list_field, ['1', 2, {'hello': 'world'}])
+        self.assertEqual(doc.embedded_field.__class__, Embedded)
+        self.assertEqual(doc.embedded_field.string_field, "hello")
+        self.assertEqual(doc.embedded_field.int_field, 1)
+        self.assertEqual(doc.embedded_field.dict_field, {'hello': 'world'})
+        self.assertEqual(doc.embedded_field.list_field, ['1', 2, {'hello': 'world'}])
 
     def test_complex_embedded_documents(self):
         """Test complex dynamic embedded documents setups"""
@@ -213,7 +213,7 @@ class DynamicDocTest(unittest.TestCase):
         embedded_1.list_field = ['1', 2, embedded_2]
         doc.embedded_field = embedded_1
 
-        self.assertEquals(doc.to_mongo(), {"_types": ['Doc'], "_cls": "Doc",
+        self.assertEqual(doc.to_mongo(), {"_types": ['Doc'], "_cls": "Doc",
             "embedded_field": {
                 "_types": ['Embedded'], "_cls": "Embedded",
                 "string_field": "hello",
@@ -230,20 +230,20 @@ class DynamicDocTest(unittest.TestCase):
         })
         doc.save()
         doc = Doc.objects.first()
-        self.assertEquals(doc.embedded_field.__class__, Embedded)
-        self.assertEquals(doc.embedded_field.string_field, "hello")
-        self.assertEquals(doc.embedded_field.int_field, 1)
-        self.assertEquals(doc.embedded_field.dict_field, {'hello': 'world'})
-        self.assertEquals(doc.embedded_field.list_field[0], '1')
-        self.assertEquals(doc.embedded_field.list_field[1], 2)
+        self.assertEqual(doc.embedded_field.__class__, Embedded)
+        self.assertEqual(doc.embedded_field.string_field, "hello")
+        self.assertEqual(doc.embedded_field.int_field, 1)
+        self.assertEqual(doc.embedded_field.dict_field, {'hello': 'world'})
+        self.assertEqual(doc.embedded_field.list_field[0], '1')
+        self.assertEqual(doc.embedded_field.list_field[1], 2)
 
         embedded_field = doc.embedded_field.list_field[2]
 
-        self.assertEquals(embedded_field.__class__, Embedded)
-        self.assertEquals(embedded_field.string_field, "hello")
-        self.assertEquals(embedded_field.int_field, 1)
-        self.assertEquals(embedded_field.dict_field, {'hello': 'world'})
-        self.assertEquals(embedded_field.list_field, ['1', 2, {'hello': 'world'}])
+        self.assertEqual(embedded_field.__class__, Embedded)
+        self.assertEqual(embedded_field.string_field, "hello")
+        self.assertEqual(embedded_field.int_field, 1)
+        self.assertEqual(embedded_field.dict_field, {'hello': 'world'})
+        self.assertEqual(embedded_field.list_field, ['1', 2, {'hello': 'world'}])
 
     def test_delta_for_dynamic_documents(self):
         p = self.Person()
@@ -252,18 +252,18 @@ class DynamicDocTest(unittest.TestCase):
         p.save()
 
         p.age = 24
-        self.assertEquals(p.age, 24)
-        self.assertEquals(p._get_changed_fields(), ['age'])
-        self.assertEquals(p._delta(), ({'age': 24}, {}))
+        self.assertEqual(p.age, 24)
+        self.assertEqual(p._get_changed_fields(), ['age'])
+        self.assertEqual(p._delta(), ({'age': 24}, {}))
 
         p = self.Person.objects(age=22).get()
         p.age = 24
-        self.assertEquals(p.age, 24)
-        self.assertEquals(p._get_changed_fields(), ['age'])
-        self.assertEquals(p._delta(), ({'age': 24}, {}))
+        self.assertEqual(p.age, 24)
+        self.assertEqual(p._get_changed_fields(), ['age'])
+        self.assertEqual(p._delta(), ({'age': 24}, {}))
 
         p.save()
-        self.assertEquals(1, self.Person.objects(age=24).count())
+        self.assertEqual(1, self.Person.objects(age=24).count())
 
     def test_delta(self):
 
@@ -275,40 +275,40 @@ class DynamicDocTest(unittest.TestCase):
         doc.save()
 
         doc = Doc.objects.first()
-        self.assertEquals(doc._get_changed_fields(), [])
-        self.assertEquals(doc._delta(), ({}, {}))
+        self.assertEqual(doc._get_changed_fields(), [])
+        self.assertEqual(doc._delta(), ({}, {}))
 
         doc.string_field = 'hello'
-        self.assertEquals(doc._get_changed_fields(), ['string_field'])
-        self.assertEquals(doc._delta(), ({'string_field': 'hello'}, {}))
+        self.assertEqual(doc._get_changed_fields(), ['string_field'])
+        self.assertEqual(doc._delta(), ({'string_field': 'hello'}, {}))
 
         doc._changed_fields = []
         doc.int_field = 1
-        self.assertEquals(doc._get_changed_fields(), ['int_field'])
-        self.assertEquals(doc._delta(), ({'int_field': 1}, {}))
+        self.assertEqual(doc._get_changed_fields(), ['int_field'])
+        self.assertEqual(doc._delta(), ({'int_field': 1}, {}))
 
         doc._changed_fields = []
         dict_value = {'hello': 'world', 'ping': 'pong'}
         doc.dict_field = dict_value
-        self.assertEquals(doc._get_changed_fields(), ['dict_field'])
-        self.assertEquals(doc._delta(), ({'dict_field': dict_value}, {}))
+        self.assertEqual(doc._get_changed_fields(), ['dict_field'])
+        self.assertEqual(doc._delta(), ({'dict_field': dict_value}, {}))
 
         doc._changed_fields = []
         list_value = ['1', 2, {'hello': 'world'}]
         doc.list_field = list_value
-        self.assertEquals(doc._get_changed_fields(), ['list_field'])
-        self.assertEquals(doc._delta(), ({'list_field': list_value}, {}))
+        self.assertEqual(doc._get_changed_fields(), ['list_field'])
+        self.assertEqual(doc._delta(), ({'list_field': list_value}, {}))
 
         # Test unsetting
         doc._changed_fields = []
         doc.dict_field = {}
-        self.assertEquals(doc._get_changed_fields(), ['dict_field'])
-        self.assertEquals(doc._delta(), ({}, {'dict_field': 1}))
+        self.assertEqual(doc._get_changed_fields(), ['dict_field'])
+        self.assertEqual(doc._delta(), ({}, {'dict_field': 1}))
 
         doc._changed_fields = []
         doc.list_field = []
-        self.assertEquals(doc._get_changed_fields(), ['list_field'])
-        self.assertEquals(doc._delta(), ({}, {'list_field': 1}))
+        self.assertEqual(doc._get_changed_fields(), ['list_field'])
+        self.assertEqual(doc._delta(), ({}, {'list_field': 1}))
 
     def test_delta_recursive(self):
         """Testing deltaing works with dynamic documents"""
@@ -323,8 +323,8 @@ class DynamicDocTest(unittest.TestCase):
         doc.save()
 
         doc = Doc.objects.first()
-        self.assertEquals(doc._get_changed_fields(), [])
-        self.assertEquals(doc._delta(), ({}, {}))
+        self.assertEqual(doc._get_changed_fields(), [])
+        self.assertEqual(doc._delta(), ({}, {}))
 
         embedded_1 = Embedded()
         embedded_1.string_field = 'hello'
@@ -333,7 +333,7 @@ class DynamicDocTest(unittest.TestCase):
         embedded_1.list_field = ['1', 2, {'hello': 'world'}]
         doc.embedded_field = embedded_1
 
-        self.assertEquals(doc._get_changed_fields(), ['embedded_field'])
+        self.assertEqual(doc._get_changed_fields(), ['embedded_field'])
 
         embedded_delta = {
             'string_field': 'hello',
@@ -341,28 +341,28 @@ class DynamicDocTest(unittest.TestCase):
             'dict_field': {'hello': 'world'},
             'list_field': ['1', 2, {'hello': 'world'}]
         }
-        self.assertEquals(doc.embedded_field._delta(), (embedded_delta, {}))
+        self.assertEqual(doc.embedded_field._delta(), (embedded_delta, {}))
         embedded_delta.update({
             '_types': ['Embedded'],
             '_cls': 'Embedded',
         })
-        self.assertEquals(doc._delta(), ({'embedded_field': embedded_delta}, {}))
+        self.assertEqual(doc._delta(), ({'embedded_field': embedded_delta}, {}))
 
         doc.save()
         doc.reload()
 
         doc.embedded_field.dict_field = {}
-        self.assertEquals(doc._get_changed_fields(), ['embedded_field.dict_field'])
-        self.assertEquals(doc.embedded_field._delta(), ({}, {'dict_field': 1}))
+        self.assertEqual(doc._get_changed_fields(), ['embedded_field.dict_field'])
+        self.assertEqual(doc.embedded_field._delta(), ({}, {'dict_field': 1}))
 
-        self.assertEquals(doc._delta(), ({}, {'embedded_field.dict_field': 1}))
+        self.assertEqual(doc._delta(), ({}, {'embedded_field.dict_field': 1}))
         doc.save()
         doc.reload()
 
         doc.embedded_field.list_field = []
-        self.assertEquals(doc._get_changed_fields(), ['embedded_field.list_field'])
-        self.assertEquals(doc.embedded_field._delta(), ({}, {'list_field': 1}))
-        self.assertEquals(doc._delta(), ({}, {'embedded_field.list_field': 1}))
+        self.assertEqual(doc._get_changed_fields(), ['embedded_field.list_field'])
+        self.assertEqual(doc.embedded_field._delta(), ({}, {'list_field': 1}))
+        self.assertEqual(doc._delta(), ({}, {'embedded_field.list_field': 1}))
         doc.save()
         doc.reload()
 
@@ -373,8 +373,8 @@ class DynamicDocTest(unittest.TestCase):
         embedded_2.list_field = ['1', 2, {'hello': 'world'}]
 
         doc.embedded_field.list_field = ['1', 2, embedded_2]
-        self.assertEquals(doc._get_changed_fields(), ['embedded_field.list_field'])
-        self.assertEquals(doc.embedded_field._delta(), ({
+        self.assertEqual(doc._get_changed_fields(), ['embedded_field.list_field'])
+        self.assertEqual(doc.embedded_field._delta(), ({
             'list_field': ['1', 2, {
                 '_cls': 'Embedded',
                 '_types': ['Embedded'],
@@ -385,7 +385,7 @@ class DynamicDocTest(unittest.TestCase):
             }]
         }, {}))
 
-        self.assertEquals(doc._delta(), ({
+        self.assertEqual(doc._delta(), ({
             'embedded_field.list_field': ['1', 2, {
                 '_cls': 'Embedded',
                  '_types': ['Embedded'],
@@ -398,25 +398,25 @@ class DynamicDocTest(unittest.TestCase):
         doc.save()
         doc.reload()
 
-        self.assertEquals(doc.embedded_field.list_field[2]._changed_fields, [])
-        self.assertEquals(doc.embedded_field.list_field[0], '1')
-        self.assertEquals(doc.embedded_field.list_field[1], 2)
+        self.assertEqual(doc.embedded_field.list_field[2]._changed_fields, [])
+        self.assertEqual(doc.embedded_field.list_field[0], '1')
+        self.assertEqual(doc.embedded_field.list_field[1], 2)
         for k in doc.embedded_field.list_field[2]._fields:
-            self.assertEquals(doc.embedded_field.list_field[2][k], embedded_2[k])
+            self.assertEqual(doc.embedded_field.list_field[2][k], embedded_2[k])
 
         doc.embedded_field.list_field[2].string_field = 'world'
-        self.assertEquals(doc._get_changed_fields(), ['embedded_field.list_field.2.string_field'])
-        self.assertEquals(doc.embedded_field._delta(), ({'list_field.2.string_field': 'world'}, {}))
-        self.assertEquals(doc._delta(), ({'embedded_field.list_field.2.string_field': 'world'}, {}))
+        self.assertEqual(doc._get_changed_fields(), ['embedded_field.list_field.2.string_field'])
+        self.assertEqual(doc.embedded_field._delta(), ({'list_field.2.string_field': 'world'}, {}))
+        self.assertEqual(doc._delta(), ({'embedded_field.list_field.2.string_field': 'world'}, {}))
         doc.save()
         doc.reload()
-        self.assertEquals(doc.embedded_field.list_field[2].string_field, 'world')
+        self.assertEqual(doc.embedded_field.list_field[2].string_field, 'world')
 
         # Test multiple assignments
         doc.embedded_field.list_field[2].string_field = 'hello world'
         doc.embedded_field.list_field[2] = doc.embedded_field.list_field[2]
-        self.assertEquals(doc._get_changed_fields(), ['embedded_field.list_field'])
-        self.assertEquals(doc.embedded_field._delta(), ({
+        self.assertEqual(doc._get_changed_fields(), ['embedded_field.list_field'])
+        self.assertEqual(doc.embedded_field._delta(), ({
             'list_field': ['1', 2, {
             '_types': ['Embedded'],
             '_cls': 'Embedded',
@@ -424,7 +424,7 @@ class DynamicDocTest(unittest.TestCase):
             'int_field': 1,
             'list_field': ['1', 2, {'hello': 'world'}],
             'dict_field': {'hello': 'world'}}]}, {}))
-        self.assertEquals(doc._delta(), ({
+        self.assertEqual(doc._delta(), ({
             'embedded_field.list_field': ['1', 2, {
                 '_types': ['Embedded'],
                 '_cls': 'Embedded',
@@ -435,32 +435,32 @@ class DynamicDocTest(unittest.TestCase):
             ]}, {}))
         doc.save()
         doc.reload()
-        self.assertEquals(doc.embedded_field.list_field[2].string_field, 'hello world')
+        self.assertEqual(doc.embedded_field.list_field[2].string_field, 'hello world')
 
         # Test list native methods
         doc.embedded_field.list_field[2].list_field.pop(0)
-        self.assertEquals(doc._delta(), ({'embedded_field.list_field.2.list_field': [2, {'hello': 'world'}]}, {}))
+        self.assertEqual(doc._delta(), ({'embedded_field.list_field.2.list_field': [2, {'hello': 'world'}]}, {}))
         doc.save()
         doc.reload()
 
         doc.embedded_field.list_field[2].list_field.append(1)
-        self.assertEquals(doc._delta(), ({'embedded_field.list_field.2.list_field': [2, {'hello': 'world'}, 1]}, {}))
+        self.assertEqual(doc._delta(), ({'embedded_field.list_field.2.list_field': [2, {'hello': 'world'}, 1]}, {}))
         doc.save()
         doc.reload()
-        self.assertEquals(doc.embedded_field.list_field[2].list_field, [2, {'hello': 'world'}, 1])
+        self.assertEqual(doc.embedded_field.list_field[2].list_field, [2, {'hello': 'world'}, 1])
 
-        doc.embedded_field.list_field[2].list_field.sort()
+        doc.embedded_field.list_field[2].list_field.sort(key=str)# use str as a key to allow comparing uncomperable types
         doc.save()
         doc.reload()
-        self.assertEquals(doc.embedded_field.list_field[2].list_field, [1, 2, {'hello': 'world'}])
+        self.assertEqual(doc.embedded_field.list_field[2].list_field, [1, 2, {'hello': 'world'}])
 
         del(doc.embedded_field.list_field[2].list_field[2]['hello'])
-        self.assertEquals(doc._delta(), ({'embedded_field.list_field.2.list_field': [1, 2, {}]}, {}))
+        self.assertEqual(doc._delta(), ({'embedded_field.list_field.2.list_field': [1, 2, {}]}, {}))
         doc.save()
         doc.reload()
 
         del(doc.embedded_field.list_field[2].list_field)
-        self.assertEquals(doc._delta(), ({}, {'embedded_field.list_field.2.list_field': 1}))
+        self.assertEqual(doc._delta(), ({}, {'embedded_field.list_field.2.list_field': 1}))
 
         doc.save()
         doc.reload()
@@ -470,8 +470,8 @@ class DynamicDocTest(unittest.TestCase):
         doc.reload()
 
         doc.dict_field['embedded'].string_field = 'Hello World'
-        self.assertEquals(doc._get_changed_fields(), ['dict_field.embedded.string_field'])
-        self.assertEquals(doc._delta(), ({'dict_field.embedded.string_field': 'Hello World'}, {}))
+        self.assertEqual(doc._get_changed_fields(), ['dict_field.embedded.string_field'])
+        self.assertEqual(doc._delta(), ({'dict_field.embedded.string_field': 'Hello World'}, {}))
 
     def test_indexes(self):
         """Ensure that indexes are used when meta[indexes] is specified.
@@ -500,3 +500,34 @@ class DynamicDocTest(unittest.TestCase):
         self.assertTrue([('_types', 1), ('category', 1), ('date', -1)]
                         in info)
         self.assertTrue([('_types', 1), ('date', -1)] in info)
+
+    def test_dynamic_and_embedded(self):
+        """Ensure embedded documents play nicely"""
+
+        class Address(EmbeddedDocument):
+            city = StringField()
+
+        class Person(DynamicDocument):
+            name = StringField()
+            meta = {'allow_inheritance': True}
+
+        Person.drop_collection()
+
+        Person(name="Ross", address=Address(city="London")).save()
+
+        person = Person.objects.first()
+        person.address.city = "Lundenne"
+        person.save()
+
+        self.assertEqual(Person.objects.first().address.city, "Lundenne")
+
+        person = Person.objects.first()
+        person.address = Address(city="Londinium")
+        person.save()
+
+        self.assertEqual(Person.objects.first().address.city, "Londinium")
+
+        person = Person.objects.first()
+        person.age = 35
+        person.save()
+        self.assertEqual(Person.objects.first().age, 35)

tests/test_fields.py

@@ -1,21 +1,23 @@
+from __future__ import with_statement
 import datetime
 import os
 import unittest
 import uuid
-import StringIO
 import tempfile
-import gridfs
 
-from bson import Binary
 from decimal import Decimal
 
+from bson import Binary, DBRef
+import gridfs
+
+from nose.plugins.skip import SkipTest
 from mongoengine import *
 from mongoengine.connection import get_db
 from mongoengine.base import _document_registry, NotRegistered
+from mongoengine.python_support import PY3, b, StringIO, bin_type
 
 TEST_IMAGE_PATH = os.path.join(os.path.dirname(__file__), 'mongoengine.png')
 
-
 class FieldTest(unittest.TestCase):
 
     def setUp(self):
@@ -124,7 +126,7 @@ class FieldTest(unittest.TestCase):
         self.assertEqual(ret.int_fld, None)
         self.assertEqual(ret.flt_fld, None)
         # Return current time if retrived value is None.
-        self.assert_(isinstance(ret.comp_dt_fld, datetime.datetime))
+        self.assertTrue(isinstance(ret.comp_dt_fld, datetime.datetime))
 
         self.assertRaises(ValidationError, ret.validate)
 
@@ -283,6 +285,7 @@ class FieldTest(unittest.TestCase):
         uu = uuid.uuid4()
         Person(api_key=uu).save()
         self.assertEqual(1, Person.objects(api_key=uu).count())
+        self.assertEqual(uu, Person.objects.first().api_key)
 
         person = Person()
         valid = (uuid.uuid4(), uuid.uuid1())
@@ -307,6 +310,7 @@ class FieldTest(unittest.TestCase):
         uu = uuid.uuid4()
         Person(api_key=uu).save()
         self.assertEqual(1, Person.objects(api_key=uu).count())
+        self.assertEqual(uu, Person.objects.first().api_key)
 
         person = Person()
         valid = (uuid.uuid4(), uuid.uuid1())
@@ -356,7 +360,7 @@ class FieldTest(unittest.TestCase):
         log.date = datetime.date.today()
         log.save()
         log.reload()
-        self.assertEquals(log.date.date(), datetime.date.today())
+        self.assertEqual(log.date.date(), datetime.date.today())
 
         LogEntry.drop_collection()
 
@@ -367,8 +371,8 @@ class FieldTest(unittest.TestCase):
         log.date = d1
         log.save()
         log.reload()
-        self.assertNotEquals(log.date, d1)
-        self.assertEquals(log.date, d2)
+        self.assertNotEqual(log.date, d1)
+        self.assertEqual(log.date, d2)
 
         # Post UTC - microseconds are rounded (down) nearest millisecond
         d1 = datetime.datetime(1970, 01, 01, 00, 00, 01, 9999)
@@ -376,17 +380,19 @@ class FieldTest(unittest.TestCase):
         log.date = d1
         log.save()
         log.reload()
-        self.assertNotEquals(log.date, d1)
-        self.assertEquals(log.date, d2)
+        self.assertNotEqual(log.date, d1)
+        self.assertEqual(log.date, d2)
 
-        # Pre UTC dates microseconds below 1000 are dropped
-        d1 = datetime.datetime(1969, 12, 31, 23, 59, 59, 999)
-        d2 = datetime.datetime(1969, 12, 31, 23, 59, 59)
-        log.date = d1
-        log.save()
-        log.reload()
-        self.assertNotEquals(log.date, d1)
-        self.assertEquals(log.date, d2)
+        if not PY3:
+            # Pre UTC dates microseconds below 1000 are dropped
+            # This does not seem to be true in PY3
+            d1 = datetime.datetime(1969, 12, 31, 23, 59, 59, 999)
+            d2 = datetime.datetime(1969, 12, 31, 23, 59, 59)
+            log.date = d1
+            log.save()
+            log.reload()
+            self.assertNotEqual(log.date, d1)
+            self.assertEqual(log.date, d2)
 
         LogEntry.drop_collection()
 
@@ -405,21 +411,21 @@ class FieldTest(unittest.TestCase):
         log.date = d1
         log.save()
         log.reload()
-        self.assertEquals(log.date, d1)
+        self.assertEqual(log.date, d1)
 
         # Post UTC - microseconds are rounded (down) nearest millisecond - with default datetimefields
         d1 = datetime.datetime(1970, 01, 01, 00, 00, 01, 9999)
         log.date = d1
         log.save()
         log.reload()
-        self.assertEquals(log.date, d1)
+        self.assertEqual(log.date, d1)
 
         # Pre UTC dates microseconds below 1000 are dropped - with default datetimefields
         d1 = datetime.datetime(1969, 12, 31, 23, 59, 59, 999)
         log.date = d1
         log.save()
         log.reload()
-        self.assertEquals(log.date, d1)
+        self.assertEqual(log.date, d1)
 
         # Pre UTC microseconds above 1000 is wonky - with default datetimefields
         # log.date has an invalid microsecond value so I can't construct
@@ -429,7 +435,7 @@ class FieldTest(unittest.TestCase):
             log.date = d1
             log.save()
             log.reload()
-            self.assertEquals(log.date, d1)
+            self.assertEqual(log.date, d1)
             log1 = LogEntry.objects.get(date=d1)
             self.assertEqual(log, log1)
 
@@ -450,7 +456,7 @@ class FieldTest(unittest.TestCase):
         log.save()
 
         log1 = LogEntry.objects.get(date=d1)
-        self.assertEquals(log, log1)
+        self.assertEqual(log, log1)
 
         LogEntry.drop_collection()
 
@@ -638,13 +644,13 @@ class FieldTest(unittest.TestCase):
         post.info = [{'test': 3}]
         post.save()
 
-        self.assertEquals(BlogPost.objects.count(), 3)
-        self.assertEquals(BlogPost.objects.filter(info__exact='test').count(), 1)
-        self.assertEquals(BlogPost.objects.filter(info__0__test='test').count(), 1)
+        self.assertEqual(BlogPost.objects.count(), 3)
+        self.assertEqual(BlogPost.objects.filter(info__exact='test').count(), 1)
+        self.assertEqual(BlogPost.objects.filter(info__0__test='test').count(), 1)
 
         # Confirm handles non strings or non existing keys
-        self.assertEquals(BlogPost.objects.filter(info__0__test__exact='5').count(), 0)
-        self.assertEquals(BlogPost.objects.filter(info__100__test__exact='test').count(), 0)
+        self.assertEqual(BlogPost.objects.filter(info__0__test__exact='5').count(), 0)
+        self.assertEqual(BlogPost.objects.filter(info__100__test__exact='test').count(), 0)
         BlogPost.drop_collection()
 
     def test_list_field_passed_in_value(self):
@@ -659,7 +665,7 @@ class FieldTest(unittest.TestCase):
 
         foo = Foo(bars=[])
         foo.bars.append(bar)
-        self.assertEquals(repr(foo.bars), '[<Bar: Bar object>]')
+        self.assertEqual(repr(foo.bars), '[<Bar: Bar object>]')
 
 
     def test_list_field_strict(self):
@@ -744,20 +750,20 @@ class FieldTest(unittest.TestCase):
         self.assertTrue(isinstance(e2.mapping[1], IntegerSetting))
 
         # Test querying
-        self.assertEquals(Simple.objects.filter(mapping__1__value=42).count(), 1)
-        self.assertEquals(Simple.objects.filter(mapping__2__number=1).count(), 1)
-        self.assertEquals(Simple.objects.filter(mapping__2__complex__value=42).count(), 1)
-        self.assertEquals(Simple.objects.filter(mapping__2__list__0__value=42).count(), 1)
-        self.assertEquals(Simple.objects.filter(mapping__2__list__1__value='foo').count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__1__value=42).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__2__number=1).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__2__complex__value=42).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__2__list__0__value=42).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__2__list__1__value='foo').count(), 1)
 
         # Confirm can update
         Simple.objects().update(set__mapping__1=IntegerSetting(value=10))
-        self.assertEquals(Simple.objects.filter(mapping__1__value=10).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__1__value=10).count(), 1)
 
         Simple.objects().update(
             set__mapping__2__list__1=StringSetting(value='Boo'))
-        self.assertEquals(Simple.objects.filter(mapping__2__list__1__value='foo').count(), 0)
-        self.assertEquals(Simple.objects.filter(mapping__2__list__1__value='Boo').count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__2__list__1__value='foo').count(), 0)
+        self.assertEqual(Simple.objects.filter(mapping__2__list__1__value='Boo').count(), 1)
 
         Simple.drop_collection()
 
@@ -796,19 +802,19 @@ class FieldTest(unittest.TestCase):
         post.info = {'details': {'test': 3}}
         post.save()
 
-        self.assertEquals(BlogPost.objects.count(), 3)
-        self.assertEquals(BlogPost.objects.filter(info__title__exact='test').count(), 1)
-        self.assertEquals(BlogPost.objects.filter(info__details__test__exact='test').count(), 1)
+        self.assertEqual(BlogPost.objects.count(), 3)
+        self.assertEqual(BlogPost.objects.filter(info__title__exact='test').count(), 1)
+        self.assertEqual(BlogPost.objects.filter(info__details__test__exact='test').count(), 1)
 
         # Confirm handles non strings or non existing keys
-        self.assertEquals(BlogPost.objects.filter(info__details__test__exact=5).count(), 0)
-        self.assertEquals(BlogPost.objects.filter(info__made_up__test__exact='test').count(), 0)
+        self.assertEqual(BlogPost.objects.filter(info__details__test__exact=5).count(), 0)
+        self.assertEqual(BlogPost.objects.filter(info__made_up__test__exact='test').count(), 0)
 
         post = BlogPost.objects.create(info={'title': 'original'})
         post.info.update({'title': 'updated'})
         post.save()
         post.reload()
-        self.assertEquals('updated', post.info['title'])
+        self.assertEqual('updated', post.info['title'])
 
         BlogPost.drop_collection()
 
@@ -861,19 +867,19 @@ class FieldTest(unittest.TestCase):
         self.assertTrue(isinstance(e2.mapping['someint'], IntegerSetting))
 
         # Test querying
-        self.assertEquals(Simple.objects.filter(mapping__someint__value=42).count(), 1)
-        self.assertEquals(Simple.objects.filter(mapping__nested_dict__number=1).count(), 1)
-        self.assertEquals(Simple.objects.filter(mapping__nested_dict__complex__value=42).count(), 1)
-        self.assertEquals(Simple.objects.filter(mapping__nested_dict__list__0__value=42).count(), 1)
-        self.assertEquals(Simple.objects.filter(mapping__nested_dict__list__1__value='foo').count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__someint__value=42).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__nested_dict__number=1).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__nested_dict__complex__value=42).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__nested_dict__list__0__value=42).count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__nested_dict__list__1__value='foo').count(), 1)
 
         # Confirm can update
         Simple.objects().update(
             set__mapping={"someint": IntegerSetting(value=10)})
         Simple.objects().update(
             set__mapping__nested_dict__list__1=StringSetting(value='Boo'))
-        self.assertEquals(Simple.objects.filter(mapping__nested_dict__list__1__value='foo').count(), 0)
-        self.assertEquals(Simple.objects.filter(mapping__nested_dict__list__1__value='Boo').count(), 1)
+        self.assertEqual(Simple.objects.filter(mapping__nested_dict__list__1__value='foo').count(), 0)
+        self.assertEqual(Simple.objects.filter(mapping__nested_dict__list__1__value='Boo').count(), 1)
 
         Simple.drop_collection()
 
@@ -1080,6 +1086,42 @@ class FieldTest(unittest.TestCase):
         User.drop_collection()
         BlogPost.drop_collection()
 
+    def test_dbref_reference_fields(self):
+
+        class Person(Document):
+            name = StringField()
+            parent = ReferenceField('self', dbref=True)
+
+        Person.drop_collection()
+
+        p1 = Person(name="John").save()
+        Person(name="Ross", parent=p1).save()
+
+        col = Person._get_collection()
+        data = col.find_one({'name': 'Ross'})
+        self.assertEqual(data['parent'], DBRef('person', p1.pk))
+
+        p = Person.objects.get(name="Ross")
+        self.assertEqual(p.parent, p1)
+
+    def test_str_reference_fields(self):
+
+        class Person(Document):
+            name = StringField()
+            parent = ReferenceField('self', dbref=False)
+
+        Person.drop_collection()
+
+        p1 = Person(name="John").save()
+        Person(name="Ross", parent=p1).save()
+
+        col = Person._get_collection()
+        data = col.find_one({'name': 'Ross'})
+        self.assertEqual(data['parent'], "%s" % p1.pk)
+
+        p = Person.objects.get(name="Ross")
+        self.assertEqual(p.parent, p1)
+
     def test_list_item_dereference(self):
         """Ensure that DBRef items in ListFields are dereferenced.
         """
@@ -1116,6 +1158,7 @@ class FieldTest(unittest.TestCase):
             boss = ReferenceField('self')
             friends = ListField(ReferenceField('self'))
 
+        Employee.drop_collection()
         bill = Employee(name='Bill Lumbergh')
         bill.save()
 
@@ -1239,7 +1282,41 @@ class FieldTest(unittest.TestCase):
 
         class BlogPost(Document):
             title = StringField()
-            author = ReferenceField(Member)
+            author = ReferenceField(Member, dbref=False)
+
+        Member.drop_collection()
+        BlogPost.drop_collection()
+
+        m1 = Member(user_num=1)
+        m1.save()
+        m2 = Member(user_num=2)
+        m2.save()
+
+        post1 = BlogPost(title='post 1', author=m1)
+        post1.save()
+
+        post2 = BlogPost(title='post 2', author=m2)
+        post2.save()
+
+        post = BlogPost.objects(author=m1).first()
+        self.assertEqual(post.id, post1.id)
+
+        post = BlogPost.objects(author=m2).first()
+        self.assertEqual(post.id, post2.id)
+
+        Member.drop_collection()
+        BlogPost.drop_collection()
+
+    def test_reference_query_conversion_dbref(self):
+        """Ensure that ReferenceFields can be queried using objects and values
+        of the type of the primary key of the referenced object.
+        """
+        class Member(Document):
+            user_num = IntField(primary_key=True)
+
+        class BlogPost(Document):
+            title = StringField()
+            author = ReferenceField(Member, dbref=True)
 
         Member.drop_collection()
         BlogPost.drop_collection()
@@ -1383,7 +1460,7 @@ class FieldTest(unittest.TestCase):
         Person.drop_collection()
         Person(name="Wilson Jr").save()
 
-        self.assertEquals(repr(Person.objects(city=None)),
+        self.assertEqual(repr(Person.objects(city=None)),
                             "[<Person: Person object>]")
 
 
@@ -1461,7 +1538,7 @@ class FieldTest(unittest.TestCase):
             content_type = StringField()
             blob = BinaryField()
 
-        BLOB = '\xe6\x00\xc4\xff\x07'
+        BLOB = b('\xe6\x00\xc4\xff\x07')
         MIME_TYPE = 'application/octet-stream'
 
         Attachment.drop_collection()
@@ -1471,7 +1548,7 @@ class FieldTest(unittest.TestCase):
 
         attachment_1 = Attachment.objects().first()
         self.assertEqual(MIME_TYPE, attachment_1.content_type)
-        self.assertEqual(BLOB, str(attachment_1.blob))
+        self.assertEqual(BLOB, bin_type(attachment_1.blob))
 
         Attachment.drop_collection()
 
@@ -1498,12 +1575,12 @@ class FieldTest(unittest.TestCase):
 
         attachment_required = AttachmentRequired()
         self.assertRaises(ValidationError, attachment_required.validate)
-        attachment_required.blob = Binary('\xe6\x00\xc4\xff\x07')
+        attachment_required.blob = Binary(b('\xe6\x00\xc4\xff\x07'))
         attachment_required.validate()
 
-        attachment_size_limit = AttachmentSizeLimit(blob='\xe6\x00\xc4\xff\x07')
+        attachment_size_limit = AttachmentSizeLimit(blob=b('\xe6\x00\xc4\xff\x07'))
         self.assertRaises(ValidationError, attachment_size_limit.validate)
-        attachment_size_limit.blob = '\xe6\x00\xc4\xff'
+        attachment_size_limit.blob = b('\xe6\x00\xc4\xff')
         attachment_size_limit.validate()
 
         Attachment.drop_collection()
@@ -1630,8 +1707,8 @@ class FieldTest(unittest.TestCase):
         class SetFile(Document):
             the_file = FileField()
 
-        text = 'Hello, World!'
-        more_text = 'Foo Bar'
+        text = b('Hello, World!')
+        more_text = b('Foo Bar')
         content_type = 'text/plain'
 
         PutFile.drop_collection()
@@ -1644,14 +1721,14 @@ class FieldTest(unittest.TestCase):
         putfile.validate()
         result = PutFile.objects.first()
         self.assertTrue(putfile == result)
-        self.assertEquals(result.the_file.read(), text)
-        self.assertEquals(result.the_file.content_type, content_type)
+        self.assertEqual(result.the_file.read(), text)
+        self.assertEqual(result.the_file.content_type, content_type)
         result.the_file.delete() # Remove file from GridFS
         PutFile.objects.delete()
 
         # Ensure file-like objects are stored
         putfile = PutFile()
-        putstring = StringIO.StringIO()
+        putstring = StringIO()
         putstring.write(text)
         putstring.seek(0)
         putfile.the_file.put(putstring, content_type=content_type)
@@ -1659,8 +1736,8 @@ class FieldTest(unittest.TestCase):
         putfile.validate()
         result = PutFile.objects.first()
         self.assertTrue(putfile == result)
-        self.assertEquals(result.the_file.read(), text)
-        self.assertEquals(result.the_file.content_type, content_type)
+        self.assertEqual(result.the_file.read(), text)
+        self.assertEqual(result.the_file.content_type, content_type)
         result.the_file.delete()
 
         streamfile = StreamFile()
@@ -1672,14 +1749,14 @@ class FieldTest(unittest.TestCase):
         streamfile.validate()
         result = StreamFile.objects.first()
         self.assertTrue(streamfile == result)
-        self.assertEquals(result.the_file.read(), text + more_text)
-        self.assertEquals(result.the_file.content_type, content_type)
+        self.assertEqual(result.the_file.read(), text + more_text)
+        self.assertEqual(result.the_file.content_type, content_type)
         result.the_file.seek(0)
-        self.assertEquals(result.the_file.tell(), 0)
-        self.assertEquals(result.the_file.read(len(text)), text)
-        self.assertEquals(result.the_file.tell(), len(text))
-        self.assertEquals(result.the_file.read(len(more_text)), more_text)
-        self.assertEquals(result.the_file.tell(), len(text + more_text))
+        self.assertEqual(result.the_file.tell(), 0)
+        self.assertEqual(result.the_file.read(len(text)), text)
+        self.assertEqual(result.the_file.tell(), len(text))
+        self.assertEqual(result.the_file.read(len(more_text)), more_text)
+        self.assertEqual(result.the_file.tell(), len(text + more_text))
         result.the_file.delete()
 
         # Ensure deleted file returns None
@@ -1691,7 +1768,7 @@ class FieldTest(unittest.TestCase):
         setfile.validate()
         result = SetFile.objects.first()
         self.assertTrue(setfile == result)
-        self.assertEquals(result.the_file.read(), text)
+        self.assertEqual(result.the_file.read(), text)
 
         # Try replacing file with new one
         result.the_file.replace(more_text)
@@ -1699,7 +1776,7 @@ class FieldTest(unittest.TestCase):
         result.validate()
         result = SetFile.objects.first()
         self.assertTrue(setfile == result)
-        self.assertEquals(result.the_file.read(), more_text)
+        self.assertEqual(result.the_file.read(), more_text)
         result.the_file.delete()
 
         PutFile.drop_collection()
@@ -1720,7 +1797,7 @@ class FieldTest(unittest.TestCase):
         GridDocument.drop_collection()
 
         with tempfile.TemporaryFile() as f:
-            f.write("Hello World!")
+            f.write(b("Hello World!"))
             f.flush()
 
             # Test without default
@@ -1731,28 +1808,28 @@ class FieldTest(unittest.TestCase):
             doc_b = GridDocument.objects.with_id(doc_a.id)
             doc_b.the_file.replace(f, filename='doc_b')
             doc_b.save()
-            self.assertNotEquals(doc_b.the_file.grid_id, None)
+            self.assertNotEqual(doc_b.the_file.grid_id, None)
 
             # Test it matches
             doc_c = GridDocument.objects.with_id(doc_b.id)
-            self.assertEquals(doc_b.the_file.grid_id, doc_c.the_file.grid_id)
+            self.assertEqual(doc_b.the_file.grid_id, doc_c.the_file.grid_id)
 
             # Test with default
-            doc_d = GridDocument(the_file='')
+            doc_d = GridDocument(the_file=b(''))
             doc_d.save()
 
             doc_e = GridDocument.objects.with_id(doc_d.id)
-            self.assertEquals(doc_d.the_file.grid_id, doc_e.the_file.grid_id)
+            self.assertEqual(doc_d.the_file.grid_id, doc_e.the_file.grid_id)
 
             doc_e.the_file.replace(f, filename='doc_e')
             doc_e.save()
 
             doc_f = GridDocument.objects.with_id(doc_e.id)
-            self.assertEquals(doc_e.the_file.grid_id, doc_f.the_file.grid_id)
+            self.assertEqual(doc_e.the_file.grid_id, doc_f.the_file.grid_id)
 
         db = GridDocument._get_db()
         grid_fs = gridfs.GridFS(db)
-        self.assertEquals(['doc_b', 'doc_e'], grid_fs.list())
+        self.assertEqual(['doc_b', 'doc_e'], grid_fs.list())
 
     def test_file_uniqueness(self):
         """Ensure that each instance of a FileField is unique
@@ -1764,7 +1841,7 @@ class FieldTest(unittest.TestCase):
         # First instance
         test_file = TestFile()
         test_file.name = "Hello, World!"
-        test_file.the_file.put('Hello, World!')
+        test_file.the_file.put(b('Hello, World!'))
         test_file.save()
 
         # Second instance
@@ -1784,7 +1861,7 @@ class FieldTest(unittest.TestCase):
 
         test_file = TestFile()
         self.assertFalse(bool(test_file.the_file))
-        test_file.the_file = 'Hello, World!'
+        test_file.the_file = b('Hello, World!')
         test_file.the_file.content_type = 'text/plain'
         test_file.save()
         self.assertTrue(bool(test_file.the_file))
@@ -1800,6 +1877,8 @@ class FieldTest(unittest.TestCase):
         self.assertFalse(test_file.the_file in [{"test": 1}])
 
     def test_image_field(self):
+        if PY3:
+            raise SkipTest('PIL does not have Python 3 support')
 
         class TestImage(Document):
             image = ImageField()
@@ -1812,15 +1891,17 @@ class FieldTest(unittest.TestCase):
 
         t = TestImage.objects.first()
 
-        self.assertEquals(t.image.format, 'PNG')
+        self.assertEqual(t.image.format, 'PNG')
 
         w, h = t.image.size
-        self.assertEquals(w, 371)
-        self.assertEquals(h, 76)
+        self.assertEqual(w, 371)
+        self.assertEqual(h, 76)
 
         t.image.delete()
 
     def test_image_field_resize(self):
+        if PY3:
+            raise SkipTest('PIL does not have Python 3 support')
 
         class TestImage(Document):
             image = ImageField(size=(185, 37))
@@ -1833,15 +1914,40 @@ class FieldTest(unittest.TestCase):
 
         t = TestImage.objects.first()
 
-        self.assertEquals(t.image.format, 'PNG')
+        self.assertEqual(t.image.format, 'PNG')
         w, h = t.image.size
 
-        self.assertEquals(w, 185)
-        self.assertEquals(h, 37)
+        self.assertEqual(w, 185)
+        self.assertEqual(h, 37)
+
+        t.image.delete()
+
+    def test_image_field_resize_force(self):
+        if PY3:
+            raise SkipTest('PIL does not have Python 3 support')
+
+        class TestImage(Document):
+            image = ImageField(size=(185, 37, True))
+
+        TestImage.drop_collection()
+
+        t = TestImage()
+        t.image.put(open(TEST_IMAGE_PATH, 'r'))
+        t.save()
+
+        t = TestImage.objects.first()
+
+        self.assertEqual(t.image.format, 'PNG')
+        w, h = t.image.size
+
+        self.assertEqual(w, 185)
+        self.assertEqual(h, 37)
 
         t.image.delete()
 
     def test_image_field_thumbnail(self):
+        if PY3:
+            raise SkipTest('PIL does not have Python 3 support')
 
         class TestImage(Document):
             image = ImageField(thumbnail_size=(92, 18))
@@ -1854,13 +1960,12 @@ class FieldTest(unittest.TestCase):
 
         t = TestImage.objects.first()
 
-        self.assertEquals(t.image.thumbnail.format, 'PNG')
-        self.assertEquals(t.image.thumbnail.width, 92)
-        self.assertEquals(t.image.thumbnail.height, 18)
+        self.assertEqual(t.image.thumbnail.format, 'PNG')
+        self.assertEqual(t.image.thumbnail.width, 92)
+        self.assertEqual(t.image.thumbnail.height, 18)
 
         t.image.delete()
 
-
     def test_file_multidb(self):
         register_connection('test_files', 'test_files')
         class TestFile(Document):
@@ -1877,16 +1982,16 @@ class FieldTest(unittest.TestCase):
         # First instance
         test_file = TestFile()
         test_file.name = "Hello, World!"
-        test_file.the_file.put('Hello, World!',
+        test_file.the_file.put(b('Hello, World!'),
                           name="hello.txt")
         test_file.save()
 
         data = get_db("test_files").macumba.files.find_one()
-        self.assertEquals(data.get('name'), 'hello.txt')
+        self.assertEqual(data.get('name'), 'hello.txt')
 
         test_file = TestFile.objects.first()
-        self.assertEquals(test_file.the_file.read(),
-                          'Hello, World!')
+        self.assertEqual(test_file.the_file.read(),
+                          b('Hello, World!'))
 
     def test_geo_indexes(self):
         """Ensure that indexes are created automatically for GeoPointFields.
@@ -1961,6 +2066,27 @@ class FieldTest(unittest.TestCase):
         c = self.db['mongoengine.counters'].find_one({'_id': 'person.id'})
         self.assertEqual(c['next'], 10)
 
+    def test_sequence_field_sequence_name(self):
+        class Person(Document):
+            id = SequenceField(primary_key=True, sequence_name='jelly')
+            name = StringField()
+
+        self.db['mongoengine.counters'].drop()
+        Person.drop_collection()
+
+        for x in xrange(10):
+            p = Person(name="Person %s" % x)
+            p.save()
+
+        c = self.db['mongoengine.counters'].find_one({'_id': 'jelly.id'})
+        self.assertEqual(c['next'], 10)
+
+        ids = [i.id for i in Person.objects]
+        self.assertEqual(ids, range(1, 11))
+
+        c = self.db['mongoengine.counters'].find_one({'_id': 'jelly.id'})
+        self.assertEqual(c['next'], 10)
+
     def test_multiple_sequence_fields(self):
         class Person(Document):
             id = SequenceField(primary_key=True)
@@ -2147,27 +2273,27 @@ class FieldTest(unittest.TestCase):
         post.comments.append(Comment(content='hello', author=bob))
         post.comments.append(Comment(author=bob))
 
+        self.assertRaises(ValidationError, post.validate)
         try:
             post.validate()
         except ValidationError, error:
-            pass
+            # ValidationError.errors property
+            self.assertTrue(hasattr(error, 'errors'))
+            self.assertTrue(isinstance(error.errors, dict))
+            self.assertTrue('comments' in error.errors)
+            self.assertTrue(1 in error.errors['comments'])
+            self.assertTrue(isinstance(error.errors['comments'][1]['content'],
+                            ValidationError))
 
-        # ValidationError.errors property
-        self.assertTrue(hasattr(error, 'errors'))
-        self.assertTrue(isinstance(error.errors, dict))
-        self.assertTrue('comments' in error.errors)
-        self.assertTrue(1 in error.errors['comments'])
-        self.assertTrue(isinstance(error.errors['comments'][1]['content'],
-                        ValidationError))
+            # ValidationError.schema property
+            error_dict = error.to_dict()
+            self.assertTrue(isinstance(error_dict, dict))
+            self.assertTrue('comments' in error_dict)
+            self.assertTrue(1 in error_dict['comments'])
+            self.assertTrue('content' in error_dict['comments'][1])
+            self.assertEqual(error_dict['comments'][1]['content'],
+                              u'Field is required')
 
-        # ValidationError.schema property
-        error_dict = error.to_dict()
-        self.assertTrue(isinstance(error_dict, dict))
-        self.assertTrue('comments' in error_dict)
-        self.assertTrue(1 in error_dict['comments'])
-        self.assertTrue('content' in error_dict['comments'][1])
-        self.assertEquals(error_dict['comments'][1]['content'],
-                          'Field is required')
 
         post.comments[1].content = 'here we go'
         post.validate()

tests/test_queryset.py

@@ -1,16 +1,19 @@
-# -*- coding: utf-8 -*-
+from __future__ import with_statement
 import unittest
-import pymongo
-from bson import ObjectId
+
 from datetime import datetime, timedelta
 
+import pymongo
+
+from bson import ObjectId
+
+from mongoengine import *
+from mongoengine.connection import get_connection
+from mongoengine.python_support import PY3
+from mongoengine.tests import query_counter
 from mongoengine.queryset import (QuerySet, QuerySetManager,
                                   MultipleObjectsReturned, DoesNotExist,
                                   QueryFieldList)
-from mongoengine import *
-from mongoengine.connection import get_connection
-from mongoengine.tests import query_counter
-
 
 class QuerySetTest(unittest.TestCase):
 
@@ -21,6 +24,8 @@ class QuerySetTest(unittest.TestCase):
             name = StringField()
             age = IntField()
             meta = {'allow_inheritance': True}
+
+        Person.drop_collection()
         self.Person = Person
 
     def test_initialisation(self):
@@ -239,11 +244,11 @@ class QuerySetTest(unittest.TestCase):
         self.Person.objects.update(set__name='Ross', write_options=write_options)
 
         author = self.Person.objects.first()
-        self.assertEquals(author.name, 'Ross')
+        self.assertEqual(author.name, 'Ross')
 
         self.Person.objects.update_one(set__name='Test User', write_options=write_options)
         author = self.Person.objects.first()
-        self.assertEquals(author.name, 'Test User')
+        self.assertEqual(author.name, 'Test User')
 
     def test_update_update_has_a_value(self):
         """Test to ensure that update is passed a value to update to"""
@@ -332,8 +337,8 @@ class QuerySetTest(unittest.TestCase):
         BlogPost.objects(comments__by="jane").update(inc__comments__S__votes=1)
 
         post = BlogPost.objects.first()
-        self.assertEquals(post.comments[1].by, 'jane')
-        self.assertEquals(post.comments[1].votes, 8)
+        self.assertEqual(post.comments[1].by, 'jane')
+        self.assertEqual(post.comments[1].votes, 8)
 
         # Currently the $ operator only applies to the first matched item in
         # the query
@@ -346,7 +351,7 @@ class QuerySetTest(unittest.TestCase):
         Simple.objects(x=2).update(inc__x__S=1)
 
         simple = Simple.objects.first()
-        self.assertEquals(simple.x, [1, 3, 3, 2])
+        self.assertEqual(simple.x, [1, 3, 3, 2])
         Simple.drop_collection()
 
         # You can set multiples
@@ -358,10 +363,10 @@ class QuerySetTest(unittest.TestCase):
         Simple.objects(x=3).update(set__x__S=0)
 
         s = Simple.objects()
-        self.assertEquals(s[0].x, [1, 2, 0, 4])
-        self.assertEquals(s[1].x, [2, 0, 4, 5])
-        self.assertEquals(s[2].x, [0, 4, 5, 6])
-        self.assertEquals(s[3].x, [4, 5, 6, 7])
+        self.assertEqual(s[0].x, [1, 2, 0, 4])
+        self.assertEqual(s[1].x, [2, 0, 4, 5])
+        self.assertEqual(s[2].x, [0, 4, 5, 6])
+        self.assertEqual(s[3].x, [4, 5, 6, 7])
 
         # Using "$unset" with an expression like this "array.$" will result in
         # the array item becoming None, not being removed.
@@ -369,14 +374,14 @@ class QuerySetTest(unittest.TestCase):
         Simple(x=[1, 2, 3, 4, 3, 2, 3, 4]).save()
         Simple.objects(x=3).update(unset__x__S=1)
         simple = Simple.objects.first()
-        self.assertEquals(simple.x, [1, 2, None, 4, 3, 2, 3, 4])
+        self.assertEqual(simple.x, [1, 2, None, 4, 3, 2, 3, 4])
 
         # Nested updates arent supported yet..
         def update_nested():
             Simple.drop_collection()
             Simple(x=[{'test': [1, 2, 3, 4]}]).save()
             Simple.objects(x__test=2).update(set__x__S__test__S=3)
-            self.assertEquals(simple.x, [1, 2, 3, 4])
+            self.assertEqual(simple.x, [1, 2, 3, 4])
 
         self.assertRaises(OperationError, update_nested)
         Simple.drop_collection()
@@ -406,8 +411,8 @@ class QuerySetTest(unittest.TestCase):
         BlogPost.objects(comments__by="joe").update(set__comments__S__votes=Vote(score=4))
 
         post = BlogPost.objects.first()
-        self.assertEquals(post.comments[0].by, 'joe')
-        self.assertEquals(post.comments[0].votes.score, 4)
+        self.assertEqual(post.comments[0].by, 'joe')
+        self.assertEqual(post.comments[0].votes.score, 4)
 
     def test_mapfield_update(self):
         """Ensure that the MapField can be updated."""
@@ -496,7 +501,7 @@ class QuerySetTest(unittest.TestCase):
 
         Blog.drop_collection()
 
-        # Recreates the collection
+        # Recreates the collection
         self.assertEqual(0, Blog.objects.count())
 
         with query_counter() as q:
@@ -561,7 +566,7 @@ class QuerySetTest(unittest.TestCase):
         Blog.drop_collection()
         blog1 = Blog(title="code", posts=[post1, post2])
         obj_id = Blog.objects.insert(blog1, load_bulk=False)
-        self.assertEquals(obj_id.__class__.__name__, 'ObjectId')
+        self.assertEqual(obj_id.__class__.__name__, 'ObjectId')
 
         Blog.drop_collection()
         post3 = Post(comments=[comment1, comment1])
@@ -573,7 +578,7 @@ class QuerySetTest(unittest.TestCase):
         def throw_operation_error_not_unique():
             Blog.objects.insert([blog2, blog3], safe=True)
 
-        self.assertRaises(OperationError, throw_operation_error_not_unique)
+        self.assertRaises(NotUniqueError, throw_operation_error_not_unique)
         self.assertEqual(Blog.objects.count(), 2)
 
         Blog.objects.insert([blog2, blog3], write_options={'continue_on_error': True})
@@ -619,7 +624,7 @@ class QuerySetTest(unittest.TestCase):
             fresh_o1 = Organization.objects.get(id=o1.id)
             fresh_o1.save()
 
-            self.assertEquals(q, 2)
+            self.assertEqual(q, 2)
 
         with query_counter() as q:
             self.assertEqual(q, 0)
@@ -627,7 +632,7 @@ class QuerySetTest(unittest.TestCase):
             fresh_o1 = Organization.objects.get(id=o1.id)
             fresh_o1.save(cascade=False)
 
-            self.assertEquals(q, 2)
+            self.assertEqual(q, 2)
 
         with query_counter() as q:
             self.assertEqual(q, 0)
@@ -636,7 +641,7 @@ class QuerySetTest(unittest.TestCase):
             fresh_o1.employees.append(p2)
             fresh_o1.save(cascade=False)
 
-            self.assertEquals(q, 3)
+            self.assertEqual(q, 3)
 
     def test_slave_okay(self):
         """Ensures that a query can take slave_okay syntax
@@ -710,20 +715,20 @@ class QuerySetTest(unittest.TestCase):
 
         docs = Doc.objects.order_by('number')
 
-        self.assertEquals(docs.count(), 1000)
-        self.assertEquals(len(docs), 1000)
+        self.assertEqual(docs.count(), 1000)
+        self.assertEqual(len(docs), 1000)
 
         docs_string = "%s" % docs
         self.assertTrue("Doc: 0" in docs_string)
 
-        self.assertEquals(docs.count(), 1000)
-        self.assertEquals(len(docs), 1000)
+        self.assertEqual(docs.count(), 1000)
+        self.assertEqual(len(docs), 1000)
 
         # Limit and skip
-        self.assertEquals('[<Doc: 1>, <Doc: 2>, <Doc: 3>]', "%s" % docs[1:4])
+        self.assertEqual('[<Doc: 1>, <Doc: 2>, <Doc: 3>]', "%s" % docs[1:4])
 
-        self.assertEquals(docs.count(), 3)
-        self.assertEquals(len(docs), 3)
+        self.assertEqual(docs.count(), 3)
+        self.assertEqual(len(docs), 3)
         for doc in docs:
             self.assertEqual('.. queryset mid-iteration ..', repr(docs))
 
@@ -827,7 +832,11 @@ class QuerySetTest(unittest.TestCase):
     def test_filter_chaining(self):
         """Ensure filters can be chained together.
         """
+        class Blog(Document):
+            id = StringField(unique=True, primary_key=True)
+
         class BlogPost(Document):
+            blog = ReferenceField(Blog)
             title = StringField()
             is_published = BooleanField()
             published_date = DateTimeField()
@@ -836,13 +845,24 @@ class QuerySetTest(unittest.TestCase):
             def published(doc_cls, queryset):
                 return queryset(is_published=True)
 
-        blog_post_1 = BlogPost(title="Blog Post #1",
+        Blog.drop_collection()
+        BlogPost.drop_collection()
+
+        blog_1 = Blog(id="1")
+        blog_2 = Blog(id="2")
+        blog_3 = Blog(id="3")
+
+        blog_1.save()
+        blog_2.save()
+        blog_3.save()
+
+        blog_post_1 = BlogPost(blog=blog_1, title="Blog Post #1",
                                is_published = True,
                                published_date=datetime(2010, 1, 5, 0, 0 ,0))
-        blog_post_2 = BlogPost(title="Blog Post #2",
+        blog_post_2 = BlogPost(blog=blog_2, title="Blog Post #2",
                                is_published = True,
                                published_date=datetime(2010, 1, 6, 0, 0 ,0))
-        blog_post_3 = BlogPost(title="Blog Post #3",
+        blog_post_3 = BlogPost(blog=blog_3, title="Blog Post #3",
                                is_published = True,
                                published_date=datetime(2010, 1, 7, 0, 0 ,0))
 
@@ -856,7 +876,29 @@ class QuerySetTest(unittest.TestCase):
             published_date__lt=datetime(2010, 1, 7, 0, 0 ,0))
         self.assertEqual(published_posts.count(), 2)
 
+
+        blog_posts = BlogPost.objects
+        blog_posts = blog_posts.filter(blog__in=[blog_1, blog_2])
+        blog_posts = blog_posts.filter(blog=blog_3)
+        self.assertEqual(blog_posts.count(), 0)
+
         BlogPost.drop_collection()
+        Blog.drop_collection()
+
+    def test_raw_and_merging(self):
+        class Doc(Document):
+            pass
+
+        raw_query = Doc.objects(__raw__={'deleted': False,
+                                'scraped': 'yes',
+                                '$nor': [{'views.extracted': 'no'},
+                                         {'attachments.views.extracted':'no'}]
+                                })._query
+
+        expected = {'deleted': False, '_types': 'Doc', 'scraped': 'yes',
+                    '$nor': [{'views.extracted': 'no'},
+                             {'attachments.views.extracted': 'no'}]}
+        self.assertEqual(expected, raw_query)
 
     def test_ordering(self):
         """Ensure default ordering is applied and can be overridden.
@@ -1082,27 +1124,27 @@ class QuerySetTest(unittest.TestCase):
 
         # first three
         numbers = Numbers.objects.fields(slice__n=3).get()
-        self.assertEquals(numbers.n, [0, 1, 2])
+        self.assertEqual(numbers.n, [0, 1, 2])
 
         # last three
         numbers = Numbers.objects.fields(slice__n=-3).get()
-        self.assertEquals(numbers.n, [-3, -2, -1])
+        self.assertEqual(numbers.n, [-3, -2, -1])
 
         # skip 2, limit 3
         numbers = Numbers.objects.fields(slice__n=[2, 3]).get()
-        self.assertEquals(numbers.n, [2, 3, 4])
+        self.assertEqual(numbers.n, [2, 3, 4])
 
         # skip to fifth from last, limit 4
         numbers = Numbers.objects.fields(slice__n=[-5, 4]).get()
-        self.assertEquals(numbers.n, [-5, -4, -3, -2])
+        self.assertEqual(numbers.n, [-5, -4, -3, -2])
 
         # skip to fifth from last, limit 10
         numbers = Numbers.objects.fields(slice__n=[-5, 10]).get()
-        self.assertEquals(numbers.n, [-5, -4, -3, -2, -1])
+        self.assertEqual(numbers.n, [-5, -4, -3, -2, -1])
 
         # skip to fifth from last, limit 10 dict method
         numbers = Numbers.objects.fields(n={"$slice": [-5, 10]}).get()
-        self.assertEquals(numbers.n, [-5, -4, -3, -2, -1])
+        self.assertEqual(numbers.n, [-5, -4, -3, -2, -1])
 
     def test_slicing_nested_fields(self):
         """Ensure that query slicing an embedded array works.
@@ -1122,27 +1164,27 @@ class QuerySetTest(unittest.TestCase):
 
         # first three
         numbers = Numbers.objects.fields(slice__embedded__n=3).get()
-        self.assertEquals(numbers.embedded.n, [0, 1, 2])
+        self.assertEqual(numbers.embedded.n, [0, 1, 2])
 
         # last three
         numbers = Numbers.objects.fields(slice__embedded__n=-3).get()
-        self.assertEquals(numbers.embedded.n, [-3, -2, -1])
+        self.assertEqual(numbers.embedded.n, [-3, -2, -1])
 
         # skip 2, limit 3
         numbers = Numbers.objects.fields(slice__embedded__n=[2, 3]).get()
-        self.assertEquals(numbers.embedded.n, [2, 3, 4])
+        self.assertEqual(numbers.embedded.n, [2, 3, 4])
 
         # skip to fifth from last, limit 4
         numbers = Numbers.objects.fields(slice__embedded__n=[-5, 4]).get()
-        self.assertEquals(numbers.embedded.n, [-5, -4, -3, -2])
+        self.assertEqual(numbers.embedded.n, [-5, -4, -3, -2])
 
         # skip to fifth from last, limit 10
         numbers = Numbers.objects.fields(slice__embedded__n=[-5, 10]).get()
-        self.assertEquals(numbers.embedded.n, [-5, -4, -3, -2, -1])
+        self.assertEqual(numbers.embedded.n, [-5, -4, -3, -2, -1])
 
         # skip to fifth from last, limit 10 dict method
         numbers = Numbers.objects.fields(embedded__n={"$slice": [-5, 10]}).get()
-        self.assertEquals(numbers.embedded.n, [-5, -4, -3, -2, -1])
+        self.assertEqual(numbers.embedded.n, [-5, -4, -3, -2, -1])
 
     def test_find_embedded(self):
         """Ensure that an embedded document is properly returned from a query.
@@ -1226,7 +1268,6 @@ class QuerySetTest(unittest.TestCase):
         published_posts = (post1, post2, post3, post5, post6)
         self.assertTrue(all(obj.id in posts for obj in published_posts))
 
-
         # Check Q object combination
         date = datetime(2010, 1, 10)
         q = BlogPost.objects(Q(publish_date__lte=date) | Q(published=True))
@@ -1285,6 +1326,42 @@ class QuerySetTest(unittest.TestCase):
 
         BlogPost.drop_collection()
 
+    def test_raw_query_and_Q_objects(self):
+        """
+        Test raw plays nicely
+        """
+        class Foo(Document):
+            name = StringField()
+            a = StringField()
+            b = StringField()
+            c = StringField()
+
+            meta = {
+                'allow_inheritance': False
+            }
+
+        query = Foo.objects(__raw__={'$nor': [{'name': 'bar'}]})._query
+        self.assertEqual(query, {'$nor': [{'name': 'bar'}]})
+
+        q1 = {'$or': [{'a': 1}, {'b': 1}]}
+        query = Foo.objects(Q(__raw__=q1) & Q(c=1))._query
+        self.assertEqual(query, {'$or': [{'a': 1}, {'b': 1}], 'c': 1})
+
+    def test_q_merge_queries_edge_case(self):
+
+        class User(Document):
+            email = EmailField(required=False)
+            name = StringField()
+
+        User.drop_collection()
+        pk = ObjectId()
+        User(email='example@example.com', pk=pk).save()
+
+        self.assertEqual(1, User.objects.filter(
+                                Q(email='example@example.com') |
+                                Q(name='John Doe')
+                                ).limit(2).filter(pk=pk).count())
+
     def test_exec_js_query(self):
         """Ensure that queries are properly formed for use in exec_js.
         """
@@ -1383,7 +1460,7 @@ class QuerySetTest(unittest.TestCase):
         # Test template style
         code = "{{~comments.content}}"
         sub_code = BlogPost.objects._sub_js_fields(code)
-        self.assertEquals("cmnts.body", sub_code)
+        self.assertEqual("cmnts.body", sub_code)
 
         BlogPost.drop_collection()
 
@@ -1424,12 +1501,15 @@ class QuerySetTest(unittest.TestCase):
         self.assertEqual(1, BlogPost.objects.count())
 
     def test_reverse_delete_rule_cascade_self_referencing(self):
-        """Ensure self-referencing CASCADE deletes do not result in infinite loop
+        """Ensure self-referencing CASCADE deletes do not result in infinite
+        loop
         """
         class Category(Document):
             name = StringField()
             parent = ReferenceField('self', reverse_delete_rule=CASCADE)
 
+        Category.drop_collection()
+
         num_children = 3
         base = Category(name='Root')
         base.save()
@@ -1446,13 +1526,13 @@ class QuerySetTest(unittest.TestCase):
                 child_child.save()
 
         tree_size = 1 + num_children + (num_children * num_children)
-        self.assertEquals(tree_size, Category.objects.count())
-        self.assertEquals(num_children, Category.objects(parent=base).count())
+        self.assertEqual(tree_size, Category.objects.count())
+        self.assertEqual(num_children, Category.objects(parent=base).count())
 
         # The delete should effectively wipe out the Category collection
         # without resulting in infinite parent-child cascade recursion
         base.delete()
-        self.assertEquals(0, Category.objects.count())
+        self.assertEqual(0, Category.objects.count())
 
     def test_reverse_delete_rule_nullify(self):
         """Ensure nullification of references to deleted documents.
@@ -1528,6 +1608,40 @@ class QuerySetTest(unittest.TestCase):
         self.assertEqual(post.authors, [me])
         self.assertEqual(another.authors, [])
 
+    def test_delete_with_limits(self):
+
+        class Log(Document):
+            pass
+
+        Log.drop_collection()
+
+        for i in xrange(10):
+            Log().save()
+
+        Log.objects()[3:5].delete()
+        self.assertEqual(8, Log.objects.count())
+
+    def test_delete_with_limit_handles_delete_rules(self):
+        """Ensure cascading deletion of referring documents from the database.
+        """
+        class BlogPost(Document):
+            content = StringField()
+            author = ReferenceField(self.Person, reverse_delete_rule=CASCADE)
+        BlogPost.drop_collection()
+
+        me = self.Person(name='Test User')
+        me.save()
+        someoneelse = self.Person(name='Some-one Else')
+        someoneelse.save()
+
+        BlogPost(content='Watching TV', author=me).save()
+        BlogPost(content='Chilling out', author=me).save()
+        BlogPost(content='Pro Testing', author=someoneelse).save()
+
+        self.assertEqual(3, BlogPost.objects.count())
+        self.Person.objects()[:1].delete()
+        self.assertEqual(1, BlogPost.objects.count())
+
     def test_update(self):
         """Ensure that atomic updates work properly.
         """
@@ -1713,7 +1827,7 @@ class QuerySetTest(unittest.TestCase):
 
         BlogPost.objects(slug="test-2").update_one(set__tags__0__name="python")
         post.reload()
-        self.assertEquals(post.tags[0].name, 'python')
+        self.assertEqual(post.tags[0].name, 'python')
 
         BlogPost.objects(slug="test-2").update_one(pop__tags=-1)
         post.reload()
@@ -1740,7 +1854,7 @@ class QuerySetTest(unittest.TestCase):
             set__authors__S=Author(name="Ross"))
 
         message = message.reload()
-        self.assertEquals(message.authors[0].name, "Ross")
+        self.assertEqual(message.authors[0].name, "Ross")
 
         Message.objects(authors__name="Ross").update_one(
             set__authors=[Author(name="Harry"),
@@ -1748,9 +1862,9 @@ class QuerySetTest(unittest.TestCase):
                           Author(name="Adam")])
 
         message = message.reload()
-        self.assertEquals(message.authors[0].name, "Harry")
-        self.assertEquals(message.authors[1].name, "Ross")
-        self.assertEquals(message.authors[2].name, "Adam")
+        self.assertEqual(message.authors[0].name, "Harry")
+        self.assertEqual(message.authors[1].name, "Ross")
+        self.assertEqual(message.authors[2].name, "Adam")
 
     def test_order_by(self):
         """Ensure that QuerySets may be ordered.
@@ -1830,10 +1944,10 @@ class QuerySetTest(unittest.TestCase):
         results = list(results)
         self.assertEqual(len(results), 4)
 
-        music = filter(lambda r: r.key == "music", results)[0]
+        music = list(filter(lambda r: r.key == "music", results))[0]
         self.assertEqual(music.value, 2)
 
-        film = filter(lambda r: r.key == "film", results)[0]
+        film = list(filter(lambda r: r.key == "film", results))[0]
         self.assertEqual(film.value, 3)
 
         BlogPost.drop_collection()
@@ -2133,15 +2247,15 @@ class QuerySetTest(unittest.TestCase):
         Person(name="Wilson Jr").save()
 
         freq = Person.objects.item_frequencies('city')
-        self.assertEquals(freq, {'CRB': 1.0, None: 1.0})
+        self.assertEqual(freq, {'CRB': 1.0, None: 1.0})
         freq = Person.objects.item_frequencies('city', normalize=True)
-        self.assertEquals(freq, {'CRB': 0.5, None: 0.5})
+        self.assertEqual(freq, {'CRB': 0.5, None: 0.5})
 
 
         freq = Person.objects.item_frequencies('city', map_reduce=True)
-        self.assertEquals(freq, {'CRB': 1.0, None: 1.0})
+        self.assertEqual(freq, {'CRB': 1.0, None: 1.0})
         freq = Person.objects.item_frequencies('city', normalize=True, map_reduce=True)
-        self.assertEquals(freq, {'CRB': 0.5, None: 0.5})
+        self.assertEqual(freq, {'CRB': 0.5, None: 0.5})
 
     def test_item_frequencies_with_null_embedded(self):
         class Data(EmbeddedDocument):
@@ -2166,10 +2280,10 @@ class QuerySetTest(unittest.TestCase):
         p.save()
 
         ot = Person.objects.item_frequencies('extra.tag', map_reduce=False)
-        self.assertEquals(ot, {None: 1.0, u'friend': 1.0})
+        self.assertEqual(ot, {None: 1.0, u'friend': 1.0})
 
         ot = Person.objects.item_frequencies('extra.tag', map_reduce=True)
-        self.assertEquals(ot, {None: 1.0, u'friend': 1.0})
+        self.assertEqual(ot, {None: 1.0, u'friend': 1.0})
 
     def test_item_frequencies_with_0_values(self):
         class Test(Document):
@@ -2181,9 +2295,9 @@ class QuerySetTest(unittest.TestCase):
         t.save()
 
         ot = Test.objects.item_frequencies('val', map_reduce=True)
-        self.assertEquals(ot, {0: 1})
+        self.assertEqual(ot, {0: 1})
         ot = Test.objects.item_frequencies('val', map_reduce=False)
-        self.assertEquals(ot, {0: 1})
+        self.assertEqual(ot, {0: 1})
 
     def test_item_frequencies_with_False_values(self):
         class Test(Document):
@@ -2195,9 +2309,9 @@ class QuerySetTest(unittest.TestCase):
         t.save()
 
         ot = Test.objects.item_frequencies('val', map_reduce=True)
-        self.assertEquals(ot, {False: 1})
+        self.assertEqual(ot, {False: 1})
         ot = Test.objects.item_frequencies('val', map_reduce=False)
-        self.assertEquals(ot, {False: 1})
+        self.assertEqual(ot, {False: 1})
 
     def test_item_frequencies_normalize(self):
         class Test(Document):
@@ -2212,10 +2326,10 @@ class QuerySetTest(unittest.TestCase):
             Test(val=2).save()
 
         freqs = Test.objects.item_frequencies('val', map_reduce=False, normalize=True)
-        self.assertEquals(freqs, {1: 50.0/70, 2: 20.0/70})
+        self.assertEqual(freqs, {1: 50.0/70, 2: 20.0/70})
 
         freqs = Test.objects.item_frequencies('val', map_reduce=True, normalize=True)
-        self.assertEquals(freqs, {1: 50.0/70, 2: 20.0/70})
+        self.assertEqual(freqs, {1: 50.0/70, 2: 20.0/70})
 
     def test_average(self):
         """Ensure that field can be averaged correctly.
@@ -2275,7 +2389,29 @@ class QuerySetTest(unittest.TestCase):
         foo = Foo(bar=bar)
         foo.save()
 
-        self.assertEquals(Foo.objects.distinct("bar"), [bar])
+        self.assertEqual(Foo.objects.distinct("bar"), [bar])
+
+    def test_distinct_handles_references_to_alias(self):
+        register_connection('testdb', 'mongoenginetest2')
+
+        class Foo(Document):
+            bar = ReferenceField("Bar")
+            meta = {'db_alias': 'testdb'}
+
+        class Bar(Document):
+            text = StringField()
+            meta = {'db_alias': 'testdb'}
+
+        Bar.drop_collection()
+        Foo.drop_collection()
+
+        bar = Bar(text="hi")
+        bar.save()
+
+        foo = Foo(bar=bar)
+        foo.save()
+
+        self.assertEqual(Foo.objects.distinct("bar"), [bar])
 
     def test_custom_manager(self):
         """Ensure that custom QuerySetManager instances work as expected.
@@ -2433,30 +2569,48 @@ class QuerySetTest(unittest.TestCase):
         """Ensure that index_types will, when disabled, prevent _types
         being added to all indices.
         """
-        class BlogPost(Document):
+        class BloggPost(Document):
             date = DateTimeField()
             meta = {'index_types': False,
                     'indexes': ['-date']}
 
         # Indexes are lazy so use list() to perform query
-        list(BlogPost.objects)
-        info = BlogPost.objects._collection.index_information()
+        list(BloggPost.objects)
+        info = BloggPost.objects._collection.index_information()
         info = [value['key'] for key, value in info.iteritems()]
         self.assertTrue([('_types', 1)] not in info)
         self.assertTrue([('date', -1)] in info)
 
-        BlogPost.drop_collection()
+        BloggPost.drop_collection()
 
-        class BlogPost(Document):
+        class BloggPost(Document):
             title = StringField()
             meta = {'allow_inheritance': False}
 
         # _types is not used on objects where allow_inheritance is False
-        list(BlogPost.objects)
-        info = BlogPost.objects._collection.index_information()
+        list(BloggPost.objects)
+        info = BloggPost.objects._collection.index_information()
         self.assertFalse([('_types', 1)] in info.values())
 
-        BlogPost.drop_collection()
+        BloggPost.drop_collection()
+
+    def test_types_index_with_pk(self):
+
+        class Comment(EmbeddedDocument):
+            comment_id = IntField(required=True)
+
+        try:
+            class BlogPost(Document):
+                comments = EmbeddedDocumentField(Comment)
+                meta = {'indexes': [{'fields': ['pk', 'comments.comment_id'],
+                    'unique': True}]}
+        except UnboundLocalError:
+            self.fail('Unbound local error at types index + pk definition')
+
+        info = BlogPost.objects._collection.index_information()
+        info = [value['key'] for key, value in info.iteritems()]
+        index_item = [(u'_types', 1), (u'_id', 1), (u'comments.comment_id', 1)]
+        self.assertTrue(index_item in info)
 
     def test_dict_with_custom_baseclass(self):
         """Ensure DictField working with custom base clases.
@@ -2735,8 +2889,8 @@ class QuerySetTest(unittest.TestCase):
 
         Post().save()
         Post(is_published=True).save()
-        self.assertEquals(Post.objects.count(), 2)
-        self.assertEquals(Post.published.count(), 1)
+        self.assertEqual(Post.objects.count(), 2)
+        self.assertEqual(Post.published.count(), 1)
 
         Post.drop_collection()
 
@@ -2902,10 +3056,10 @@ class QuerySetTest(unittest.TestCase):
         Number(n=3).save()
 
         numbers = [n.n for n in Number.objects.order_by('-n')]
-        self.assertEquals([3, 2, 1], numbers)
+        self.assertEqual([3, 2, 1], numbers)
 
         numbers = [n.n for n in Number.objects.order_by('+n')]
-        self.assertEquals([1, 2, 3], numbers)
+        self.assertEqual([1, 2, 3], numbers)
         Number.drop_collection()
 
 
@@ -3227,15 +3381,22 @@ class QuerySetTest(unittest.TestCase):
         self.assertEqual(len(self.Person.objects.scalar('name')), 55)
         self.assertEqual("A0", "%s" % self.Person.objects.order_by('name').scalar('name').first())
         self.assertEqual("A0", "%s" % self.Person.objects.scalar('name').order_by('name')[0])
-        self.assertEqual("[u'A1', u'A2']",  "%s" % self.Person.objects.order_by('age').scalar('name')[1:3])
-        self.assertEqual("[u'A51', u'A52']",  "%s" % self.Person.objects.order_by('age').scalar('name')[51:53])
+        if PY3:
+            self.assertEqual("['A1', 'A2']",  "%s" % self.Person.objects.order_by('age').scalar('name')[1:3])
+            self.assertEqual("['A51', 'A52']",  "%s" % self.Person.objects.order_by('age').scalar('name')[51:53])
+        else:
+            self.assertEqual("[u'A1', u'A2']",  "%s" % self.Person.objects.order_by('age').scalar('name')[1:3])
+            self.assertEqual("[u'A51', u'A52']",  "%s" % self.Person.objects.order_by('age').scalar('name')[51:53])
 
         # with_id and in_bulk
         person = self.Person.objects.order_by('name').first()
         self.assertEqual("A0", "%s" % self.Person.objects.scalar('name').with_id(person.id))
 
         pks = self.Person.objects.order_by('age').scalar('pk')[1:3]
-        self.assertEqual("[u'A1', u'A2']",  "%s" % sorted(self.Person.objects.scalar('name').in_bulk(list(pks)).values()))
+        if PY3:
+            self.assertEqual("['A1', 'A2']",  "%s" % sorted(self.Person.objects.scalar('name').in_bulk(list(pks)).values()))
+        else:
+            self.assertEqual("[u'A1', u'A2']",  "%s" % sorted(self.Person.objects.scalar('name').in_bulk(list(pks)).values()))
 
 
 class QTest(unittest.TestCase):

tests/test_replicaset_connection.py

@@ -1,4 +1,5 @@
 import unittest
+
 import pymongo
 from pymongo import ReadPreference, ReplicaSetConnection
 
@@ -26,7 +27,7 @@ class ConnectionTest(unittest.TestCase):
         if not isinstance(conn, ReplicaSetConnection):
             return
 
-        self.assertEquals(conn.read_preference, ReadPreference.SECONDARY_ONLY)
+        self.assertEqual(conn.read_preference, ReadPreference.SECONDARY_ONLY)
 
 if __name__ == '__main__':
     unittest.main()

tests/test_signals.py

@@ -212,9 +212,9 @@ class SignalTests(unittest.TestCase):
 
         # The output of this signal is not entirely deterministic. The reloaded
         # object will have an object ID. Hence, we only check part of the output
-        self.assertEquals(signal_output[3],
+        self.assertEqual(signal_output[3],
             "pre_bulk_insert signal, [<Author: Bill Shakespeare>]")
-        self.assertEquals(signal_output[-2:],
+        self.assertEqual(signal_output[-2:],
             ["post_bulk_insert signal, [<Author: Bill Shakespeare>]",
              "Is loaded",])