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mongoengine/tests/document/instance.py
Stefan Wojcik 2579e0b840 make EmbeddedDocument not hashable by default
2017-04-16 21:27:44 -04:00

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# -*- coding: utf-8 -*-
import bson
import os
import pickle
import unittest
import uuid
import weakref
from datetime import datetime
from bson import DBRef, ObjectId
from tests import fixtures
from tests.fixtures import (PickleEmbedded, PickleTest, PickleSignalsTest,
PickleDynamicEmbedded, PickleDynamicTest)
from mongoengine import *
from mongoengine.base import get_document, _document_registry
from mongoengine.connection import get_db
from mongoengine.errors import (NotRegistered, InvalidDocumentError,
InvalidQueryError, NotUniqueError,
FieldDoesNotExist, SaveConditionError)
from mongoengine.queryset import NULLIFY, Q
from mongoengine.context_managers import switch_db, query_counter
from mongoengine import signals
TEST_IMAGE_PATH = os.path.join(os.path.dirname(__file__),
'../fields/mongoengine.png')
__all__ = ("InstanceTest",)
class InstanceTest(unittest.TestCase):
def setUp(self):
connect(db='mongoenginetest')
self.db = get_db()
class Job(EmbeddedDocument):
name = StringField()
years = IntField()
class Person(Document):
name = StringField()
age = IntField()
job = EmbeddedDocumentField(Job)
non_field = True
meta = {"allow_inheritance": True}
self.Person = Person
self.Job = Job
def tearDown(self):
for collection in self.db.collection_names():
if 'system.' in collection:
continue
self.db.drop_collection(collection)
def assertDbEqual(self, docs):
self.assertEqual(
list(self.Person._get_collection().find().sort("id")),
sorted(docs, key=lambda doc: doc["_id"]))
def assertHasInstance(self, field, instance):
self.assertTrue(hasattr(field, "_instance"))
self.assertTrue(field._instance is not None)
if isinstance(field._instance, weakref.ProxyType):
self.assertTrue(field._instance.__eq__(instance))
else:
self.assertEqual(field._instance, instance)
def test_capped_collection(self):
"""Ensure that capped collections work properly."""
class Log(Document):
date = DateTimeField(default=datetime.now)
meta = {
'max_documents': 10,
'max_size': 4096,
}
Log.drop_collection()
# Ensure that the collection handles up to its maximum
for _ in range(10):
Log().save()
self.assertEqual(Log.objects.count(), 10)
# Check that extra documents don't increase the size
Log().save()
self.assertEqual(Log.objects.count(), 10)
options = Log.objects._collection.options()
self.assertEqual(options['capped'], True)
self.assertEqual(options['max'], 10)
self.assertEqual(options['size'], 4096)
# Check that the document cannot be redefined with different options
class Log(Document):
date = DateTimeField(default=datetime.now)
meta = {
'max_documents': 11,
}
# Accessing Document.objects creates the collection
with self.assertRaises(InvalidCollectionError):
Log.objects
def test_capped_collection_default(self):
"""Ensure that capped collections defaults work properly."""
class Log(Document):
date = DateTimeField(default=datetime.now)
meta = {
'max_documents': 10,
}
Log.drop_collection()
# Create a doc to create the collection
Log().save()
options = Log.objects._collection.options()
self.assertEqual(options['capped'], True)
self.assertEqual(options['max'], 10)
self.assertEqual(options['size'], 10 * 2**20)
# Check that the document with default value can be recreated
class Log(Document):
date = DateTimeField(default=datetime.now)
meta = {
'max_documents': 10,
}
# Create the collection by accessing Document.objects
Log.objects
def test_capped_collection_no_max_size_problems(self):
"""Ensure that capped collections with odd max_size work properly.
MongoDB rounds up max_size to next multiple of 256, recreating a doc
with the same spec failed in mongoengine <0.10
"""
class Log(Document):
date = DateTimeField(default=datetime.now)
meta = {
'max_size': 10000,
}
Log.drop_collection()
# Create a doc to create the collection
Log().save()
options = Log.objects._collection.options()
self.assertEqual(options['capped'], True)
self.assertTrue(options['size'] >= 10000)
# Check that the document with odd max_size value can be recreated
class Log(Document):
date = DateTimeField(default=datetime.now)
meta = {
'max_size': 10000,
}
# Create the collection by accessing Document.objects
Log.objects
def test_repr(self):
"""Ensure that unicode representation works
"""
class Article(Document):
title = StringField()
def __unicode__(self):
return self.title
doc = Article(title=u'привет мир')
self.assertEqual('<Article: привет мир>', repr(doc))
def test_repr_none(self):
"""Ensure None values are handled correctly."""
class Article(Document):
title = StringField()
def __str__(self):
return None
doc = Article(title=u'привет мир')
self.assertEqual('<Article: None>', repr(doc))
def test_queryset_resurrects_dropped_collection(self):
self.Person.drop_collection()
self.assertEqual([], list(self.Person.objects()))
# Ensure works correctly with inhertited classes
class Actor(self.Person):
pass
Actor.objects()
self.Person.drop_collection()
self.assertEqual([], list(Actor.objects()))
def test_polymorphic_references(self):
"""Ensure that the correct subclasses are returned from a query
when using references / generic references
"""
class Animal(Document):
meta = {'allow_inheritance': True}
class Fish(Animal):
pass
class Mammal(Animal):
pass
class Dog(Mammal):
pass
class Human(Mammal):
pass
class Zoo(Document):
animals = ListField(ReferenceField(Animal))
Zoo.drop_collection()
Animal.drop_collection()
Animal().save()
Fish().save()
Mammal().save()
Dog().save()
Human().save()
# Save a reference to each animal
zoo = Zoo(animals=Animal.objects)
zoo.save()
zoo.reload()
classes = [a.__class__ for a in Zoo.objects.first().animals]
self.assertEqual(classes, [Animal, Fish, Mammal, Dog, Human])
Zoo.drop_collection()
class Zoo(Document):
animals = ListField(GenericReferenceField(Animal))
# Save a reference to each animal
zoo = Zoo(animals=Animal.objects)
zoo.save()
zoo.reload()
classes = [a.__class__ for a in Zoo.objects.first().animals]
self.assertEqual(classes, [Animal, Fish, Mammal, Dog, Human])
def test_reference_inheritance(self):
class Stats(Document):
created = DateTimeField(default=datetime.now)
meta = {'allow_inheritance': False}
class CompareStats(Document):
generated = DateTimeField(default=datetime.now)
stats = ListField(ReferenceField(Stats))
Stats.drop_collection()
CompareStats.drop_collection()
list_stats = []
for i in range(10):
s = Stats()
s.save()
list_stats.append(s)
cmp_stats = CompareStats(stats=list_stats)
cmp_stats.save()
self.assertEqual(list_stats, CompareStats.objects.first().stats)
def test_db_field_load(self):
"""Ensure we load data correctly from the right db field."""
class Person(Document):
name = StringField(required=True)
_rank = StringField(required=False, db_field="rank")
@property
def rank(self):
return self._rank or "Private"
Person.drop_collection()
Person(name="Jack", _rank="Corporal").save()
Person(name="Fred").save()
self.assertEqual(Person.objects.get(name="Jack").rank, "Corporal")
self.assertEqual(Person.objects.get(name="Fred").rank, "Private")
def test_db_embedded_doc_field_load(self):
"""Ensure we load embedded document data correctly."""
class Rank(EmbeddedDocument):
title = StringField(required=True)
class Person(Document):
name = StringField(required=True)
rank_ = EmbeddedDocumentField(Rank,
required=False,
db_field='rank')
@property
def rank(self):
if self.rank_ is None:
return "Private"
return self.rank_.title
Person.drop_collection()
Person(name="Jack", rank_=Rank(title="Corporal")).save()
Person(name="Fred").save()
self.assertEqual(Person.objects.get(name="Jack").rank, "Corporal")
self.assertEqual(Person.objects.get(name="Fred").rank, "Private")
def test_custom_id_field(self):
"""Ensure that documents may be created with custom primary keys."""
class User(Document):
username = StringField(primary_key=True)
name = StringField()
meta = {'allow_inheritance': True}
User.drop_collection()
self.assertEqual(User._fields['username'].db_field, '_id')
self.assertEqual(User._meta['id_field'], 'username')
# test no primary key field
self.assertRaises(ValidationError, User(name='test').save)
# define a subclass with a different primary key field than the
# parent
with self.assertRaises(ValueError):
class EmailUser(User):
email = StringField(primary_key=True)
class EmailUser(User):
email = StringField()
user = User(username='test', name='test user')
user.save()
user_obj = User.objects.first()
self.assertEqual(user_obj.id, 'test')
self.assertEqual(user_obj.pk, 'test')
user_son = User.objects._collection.find_one()
self.assertEqual(user_son['_id'], 'test')
self.assertTrue('username' not in user_son['_id'])
User.drop_collection()
user = User(pk='mongo', name='mongo user')
user.save()
user_obj = User.objects.first()
self.assertEqual(user_obj.id, 'mongo')
self.assertEqual(user_obj.pk, 'mongo')
user_son = User.objects._collection.find_one()
self.assertEqual(user_son['_id'], 'mongo')
self.assertTrue('username' not in user_son['_id'])
def test_document_not_registered(self):
class Place(Document):
name = StringField()
meta = {'allow_inheritance': True}
class NicePlace(Place):
pass
Place.drop_collection()
Place(name="London").save()
NicePlace(name="Buckingham Palace").save()
# Mimic Place and NicePlace definitions being in a different file
# and the NicePlace model not being imported in at query time.
del(_document_registry['Place.NicePlace'])
with self.assertRaises(NotRegistered):
list(Place.objects.all())
def test_document_registry_regressions(self):
class Location(Document):
name = StringField()
meta = {'allow_inheritance': True}
class Area(Location):
location = ReferenceField('Location', dbref=True)
Location.drop_collection()
self.assertEqual(Area, get_document("Area"))
self.assertEqual(Area, get_document("Location.Area"))
def test_creation(self):
"""Ensure that document may be created using keyword arguments."""
person = self.Person(name="Test User", age=30)
self.assertEqual(person.name, "Test User")
self.assertEqual(person.age, 30)
def test_to_dbref(self):
"""Ensure that you can get a dbref of a document."""
person = self.Person(name="Test User", age=30)
self.assertRaises(OperationError, person.to_dbref)
person.save()
person.to_dbref()
def test_save_abstract_document(self):
"""Saving an abstract document should fail."""
class Doc(Document):
name = StringField()
meta = {'abstract': True}
with self.assertRaises(InvalidDocumentError):
Doc(name='aaa').save()
def test_reload(self):
"""Ensure that attributes may be reloaded."""
person = self.Person(name="Test User", age=20)
person.save()
person_obj = self.Person.objects.first()
person_obj.name = "Mr Test User"
person_obj.age = 21
person_obj.save()
self.assertEqual(person.name, "Test User")
self.assertEqual(person.age, 20)
person.reload('age')
self.assertEqual(person.name, "Test User")
self.assertEqual(person.age, 21)
person.reload()
self.assertEqual(person.name, "Mr Test User")
self.assertEqual(person.age, 21)
person.reload()
self.assertEqual(person.name, "Mr Test User")
self.assertEqual(person.age, 21)
def test_reload_sharded(self):
class Animal(Document):
superphylum = StringField()
meta = {'shard_key': ('superphylum',)}
Animal.drop_collection()
doc = Animal(superphylum='Deuterostomia')
doc.save()
doc.reload()
def test_reload_sharded_nested(self):
class SuperPhylum(EmbeddedDocument):
name = StringField()
class Animal(Document):
superphylum = EmbeddedDocumentField(SuperPhylum)
meta = {'shard_key': ('superphylum.name',)}
Animal.drop_collection()
doc = Animal(superphylum=SuperPhylum(name='Deuterostomia'))
doc.save()
doc.reload()
def test_reload_referencing(self):
"""Ensures reloading updates weakrefs correctly."""
class Embedded(EmbeddedDocument):
dict_field = DictField()
list_field = ListField()
class Doc(Document):
dict_field = DictField()
list_field = ListField()
embedded_field = EmbeddedDocumentField(Embedded)
Doc.drop_collection()
doc = Doc()
doc.dict_field = {'hello': 'world'}
doc.list_field = ['1', 2, {'hello': 'world'}]
embedded_1 = Embedded()
embedded_1.dict_field = {'hello': 'world'}
embedded_1.list_field = ['1', 2, {'hello': 'world'}]
doc.embedded_field = embedded_1
doc.save()
doc = doc.reload(10)
doc.list_field.append(1)
doc.dict_field['woot'] = "woot"
doc.embedded_field.list_field.append(1)
doc.embedded_field.dict_field['woot'] = "woot"
self.assertEqual(doc._get_changed_fields(), [
'list_field', 'dict_field.woot', 'embedded_field.list_field',
'embedded_field.dict_field.woot'])
doc.save()
self.assertEqual(len(doc.list_field), 4)
doc = doc.reload(10)
self.assertEqual(doc._get_changed_fields(), [])
self.assertEqual(len(doc.list_field), 4)
self.assertEqual(len(doc.dict_field), 2)
self.assertEqual(len(doc.embedded_field.list_field), 4)
self.assertEqual(len(doc.embedded_field.dict_field), 2)
doc.list_field.append(1)
doc.save()
doc.dict_field['extra'] = 1
doc = doc.reload(10, 'list_field')
self.assertEqual(doc._get_changed_fields(), [])
self.assertEqual(len(doc.list_field), 5)
self.assertEqual(len(doc.dict_field), 3)
self.assertEqual(len(doc.embedded_field.list_field), 4)
self.assertEqual(len(doc.embedded_field.dict_field), 2)
def test_reload_doesnt_exist(self):
class Foo(Document):
pass
f = Foo()
try:
f.reload()
except Foo.DoesNotExist:
pass
except Exception:
self.assertFalse("Threw wrong exception")
f.save()
f.delete()
try:
f.reload()
except Foo.DoesNotExist:
pass
except Exception:
self.assertFalse("Threw wrong exception")
def test_reload_of_non_strict_with_special_field_name(self):
"""Ensures reloading works for documents with meta strict == False."""
class Post(Document):
meta = {
'strict': False
}
title = StringField()
items = ListField()
Post.drop_collection()
Post._get_collection().insert({
"title": "Items eclipse",
"items": ["more lorem", "even more ipsum"]
})
post = Post.objects.first()
post.reload()
self.assertEqual(post.title, "Items eclipse")
self.assertEqual(post.items, ["more lorem", "even more ipsum"])
def test_dictionary_access(self):
"""Ensure that dictionary-style field access works properly."""
person = self.Person(name='Test User', age=30, job=self.Job())
self.assertEqual(person['name'], 'Test User')
self.assertRaises(KeyError, person.__getitem__, 'salary')
self.assertRaises(KeyError, person.__setitem__, 'salary', 50)
person['name'] = 'Another User'
self.assertEqual(person['name'], 'Another User')
# Length = length(assigned fields + id)
self.assertEqual(len(person), 5)
self.assertTrue('age' in person)
person.age = None
self.assertFalse('age' in person)
self.assertFalse('nationality' in person)
def test_embedded_document_to_mongo(self):
class Person(EmbeddedDocument):
name = StringField()
age = IntField()
meta = {"allow_inheritance": True}
class Employee(Person):
salary = IntField()
self.assertEqual(Person(name="Bob", age=35).to_mongo().keys(),
['_cls', 'name', 'age'])
self.assertEqual(
Employee(name="Bob", age=35, salary=0).to_mongo().keys(),
['_cls', 'name', 'age', 'salary'])
def test_embedded_document_to_mongo_id(self):
class SubDoc(EmbeddedDocument):
id = StringField(required=True)
sub_doc = SubDoc(id="abc")
self.assertEqual(sub_doc.to_mongo().keys(), ['id'])
def test_embedded_document(self):
"""Ensure that embedded documents are set up correctly."""
class Comment(EmbeddedDocument):
content = StringField()
self.assertTrue('content' in Comment._fields)
self.assertFalse('id' in Comment._fields)
def test_embedded_document_instance(self):
"""Ensure that embedded documents can reference parent instance."""
class Embedded(EmbeddedDocument):
string = StringField()
class Doc(Document):
embedded_field = EmbeddedDocumentField(Embedded)
Doc.drop_collection()
doc = Doc(embedded_field=Embedded(string="Hi"))
self.assertHasInstance(doc.embedded_field, doc)
doc.save()
doc = Doc.objects.get()
self.assertHasInstance(doc.embedded_field, doc)
def test_embedded_document_complex_instance(self):
"""Ensure that embedded documents in complex fields can reference
parent instance.
"""
class Embedded(EmbeddedDocument):
string = StringField()
class Doc(Document):
embedded_field = ListField(EmbeddedDocumentField(Embedded))
Doc.drop_collection()
doc = Doc(embedded_field=[Embedded(string="Hi")])
self.assertHasInstance(doc.embedded_field[0], doc)
doc.save()
doc = Doc.objects.get()
self.assertHasInstance(doc.embedded_field[0], doc)
def test_embedded_document_complex_instance_no_use_db_field(self):
"""Ensure that use_db_field is propagated to list of Emb Docs."""
class Embedded(EmbeddedDocument):
string = StringField(db_field='s')
class Doc(Document):
embedded_field = ListField(EmbeddedDocumentField(Embedded))
d = Doc(embedded_field=[Embedded(string="Hi")]).to_mongo(
use_db_field=False).to_dict()
self.assertEqual(d['embedded_field'], [{'string': 'Hi'}])
def test_instance_is_set_on_setattr(self):
class Email(EmbeddedDocument):
email = EmailField()
class Account(Document):
email = EmbeddedDocumentField(Email)
Account.drop_collection()
acc = Account()
acc.email = Email(email='test@example.com')
self.assertHasInstance(acc._data["email"], acc)
acc.save()
acc1 = Account.objects.first()
self.assertHasInstance(acc1._data["email"], acc1)
def test_instance_is_set_on_setattr_on_embedded_document_list(self):
class Email(EmbeddedDocument):
email = EmailField()
class Account(Document):
emails = EmbeddedDocumentListField(Email)
Account.drop_collection()
acc = Account()
acc.emails = [Email(email='test@example.com')]
self.assertHasInstance(acc._data["emails"][0], acc)
acc.save()
acc1 = Account.objects.first()
self.assertHasInstance(acc1._data["emails"][0], acc1)
def test_document_clean(self):
class TestDocument(Document):
status = StringField()
pub_date = DateTimeField()
def clean(self):
if self.status == 'draft' and self.pub_date is not None:
msg = 'Draft entries may not have a publication date.'
raise ValidationError(msg)
# Set the pub_date for published items if not set.
if self.status == 'published' and self.pub_date is None:
self.pub_date = datetime.now()
TestDocument.drop_collection()
t = TestDocument(status="draft", pub_date=datetime.now())
try:
t.save()
except ValidationError as e:
expect_msg = "Draft entries may not have a publication date."
self.assertTrue(expect_msg in e.message)
self.assertEqual(e.to_dict(), {'__all__': expect_msg})
t = TestDocument(status="published")
t.save(clean=False)
self.assertEqual(t.pub_date, None)
t = TestDocument(status="published")
t.save(clean=True)
self.assertEqual(type(t.pub_date), datetime)
def test_document_embedded_clean(self):
class TestEmbeddedDocument(EmbeddedDocument):
x = IntField(required=True)
y = IntField(required=True)
z = IntField(required=True)
meta = {'allow_inheritance': False}
def clean(self):
if self.z:
if self.z != self.x + self.y:
raise ValidationError('Value of z != x + y')
else:
self.z = self.x + self.y
class TestDocument(Document):
doc = EmbeddedDocumentField(TestEmbeddedDocument)
status = StringField()
TestDocument.drop_collection()
t = TestDocument(doc=TestEmbeddedDocument(x=10, y=25, z=15))
try:
t.save()
except ValidationError as e:
expect_msg = "Value of z != x + y"
self.assertTrue(expect_msg in e.message)
self.assertEqual(e.to_dict(), {'doc': {'__all__': expect_msg}})
t = TestDocument(doc=TestEmbeddedDocument(x=10, y=25)).save()
self.assertEqual(t.doc.z, 35)
# Asserts not raises
t = TestDocument(doc=TestEmbeddedDocument(x=15, y=35, z=5))
t.save(clean=False)
def test_modify_empty(self):
doc = self.Person(name="bob", age=10).save()
with self.assertRaises(InvalidDocumentError):
self.Person().modify(set__age=10)
self.assertDbEqual([dict(doc.to_mongo())])
def test_modify_invalid_query(self):
doc1 = self.Person(name="bob", age=10).save()
doc2 = self.Person(name="jim", age=20).save()
docs = [dict(doc1.to_mongo()), dict(doc2.to_mongo())]
with self.assertRaises(InvalidQueryError):
doc1.modify({'id': doc2.id}, set__value=20)
self.assertDbEqual(docs)
def test_modify_match_another_document(self):
doc1 = self.Person(name="bob", age=10).save()
doc2 = self.Person(name="jim", age=20).save()
docs = [dict(doc1.to_mongo()), dict(doc2.to_mongo())]
assert not doc1.modify({'name': doc2.name}, set__age=100)
self.assertDbEqual(docs)
def test_modify_not_exists(self):
doc1 = self.Person(name="bob", age=10).save()
doc2 = self.Person(id=ObjectId(), name="jim", age=20)
docs = [dict(doc1.to_mongo())]
assert not doc2.modify({'name': doc2.name}, set__age=100)
self.assertDbEqual(docs)
def test_modify_update(self):
other_doc = self.Person(name="bob", age=10).save()
doc = self.Person(
name="jim", age=20, job=self.Job(name="10gen", years=3)).save()
doc_copy = doc._from_son(doc.to_mongo())
# these changes must go away
doc.name = "liza"
doc.job.name = "Google"
doc.job.years = 3
assert doc.modify(
set__age=21, set__job__name="MongoDB", unset__job__years=True)
doc_copy.age = 21
doc_copy.job.name = "MongoDB"
del doc_copy.job.years
assert doc.to_json() == doc_copy.to_json()
assert doc._get_changed_fields() == []
self.assertDbEqual([dict(other_doc.to_mongo()), dict(doc.to_mongo())])
def test_save(self):
"""Ensure that a document may be saved in the database."""
# Create person object and save it to the database
person = self.Person(name='Test User', age=30)
person.save()
# Ensure that the object is in the database
collection = self.db[self.Person._get_collection_name()]
person_obj = collection.find_one({'name': 'Test User'})
self.assertEqual(person_obj['name'], 'Test User')
self.assertEqual(person_obj['age'], 30)
self.assertEqual(person_obj['_id'], person.id)
# Test skipping validation on save
class Recipient(Document):
email = EmailField(required=True)
recipient = Recipient(email='not-an-email')
self.assertRaises(ValidationError, recipient.save)
recipient.save(validate=False)
def test_save_to_a_value_that_equates_to_false(self):
class Thing(EmbeddedDocument):
count = IntField()
class User(Document):
thing = EmbeddedDocumentField(Thing)
User.drop_collection()
user = User(thing=Thing(count=1))
user.save()
user.reload()
user.thing.count = 0
user.save()
user.reload()
self.assertEqual(user.thing.count, 0)
def test_save_max_recursion_not_hit(self):
class Person(Document):
name = StringField()
parent = ReferenceField('self')
friend = ReferenceField('self')
Person.drop_collection()
p1 = Person(name="Wilson Snr")
p1.parent = None
p1.save()
p2 = Person(name="Wilson Jr")
p2.parent = p1
p2.save()
p1.friend = p2
p1.save()
# Confirm can save and it resets the changed fields without hitting
# max recursion error
p0 = Person.objects.first()
p0.name = 'wpjunior'
p0.save()
def test_save_max_recursion_not_hit_with_file_field(self):
class Foo(Document):
name = StringField()
picture = FileField()
bar = ReferenceField('self')
Foo.drop_collection()
a = Foo(name='hello').save()
a.bar = a
with open(TEST_IMAGE_PATH, 'rb') as test_image:
a.picture = test_image
a.save()
# Confirm can save and it resets the changed fields without hitting
# max recursion error
b = Foo.objects.with_id(a.id)
b.name = 'world'
b.save()
self.assertEqual(b.picture, b.bar.picture, b.bar.bar.picture)
def test_save_cascades(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.save()
p = Person.objects(name="Wilson Jr").get()
p.parent.name = "Daddy Wilson"
p.save(cascade=True)
p1.reload()
self.assertEqual(p1.name, p.parent.name)
def test_save_cascade_kwargs(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
p1.name = "Daddy Wilson"
p2.save(force_insert=True, cascade_kwargs={"force_insert": False})
p1.reload()
p2.reload()
self.assertEqual(p1.name, p2.parent.name)
def test_save_cascade_meta_false(self):
class Person(Document):
name = StringField()
parent = ReferenceField('self')
meta = {'cascade': False}
Person.drop_collection()
p1 = Person(name="Wilson Snr")
p1.parent = None
p1.save()
p2 = Person(name="Wilson Jr")
p2.parent = p1
p2.save()
p = Person.objects(name="Wilson Jr").get()
p.parent.name = "Daddy Wilson"
p.save()
p1.reload()
self.assertNotEqual(p1.name, p.parent.name)
p.save(cascade=True)
p1.reload()
self.assertEqual(p1.name, p.parent.name)
def test_save_cascade_meta_true(self):
class Person(Document):
name = StringField()
parent = ReferenceField('self')
meta = {'cascade': False}
Person.drop_collection()
p1 = Person(name="Wilson Snr")
p1.parent = None
p1.save()
p2 = Person(name="Wilson Jr")
p2.parent = p1
p2.save(cascade=True)
p = Person.objects(name="Wilson Jr").get()
p.parent.name = "Daddy Wilson"
p.save()
p1.reload()
self.assertNotEqual(p1.name, p.parent.name)
def test_save_cascades_generically(self):
class Person(Document):
name = StringField()
parent = GenericReferenceField()
Person.drop_collection()
p1 = Person(name="Wilson Snr")
p1.save()
p2 = Person(name="Wilson Jr")
p2.parent = p1
p2.save()
p = Person.objects(name="Wilson Jr").get()
p.parent.name = "Daddy Wilson"
p.save()
p1.reload()
self.assertNotEqual(p1.name, p.parent.name)
p.save(cascade=True)
p1.reload()
self.assertEqual(p1.name, p.parent.name)
def test_save_atomicity_condition(self):
class Widget(Document):
toggle = BooleanField(default=False)
count = IntField(default=0)
save_id = UUIDField()
def flip(widget):
widget.toggle = not widget.toggle
widget.count += 1
def UUID(i):
return uuid.UUID(int=i)
Widget.drop_collection()
w1 = Widget(toggle=False, save_id=UUID(1))
# ignore save_condition on new record creation
w1.save(save_condition={'save_id': UUID(42)})
w1.reload()
self.assertFalse(w1.toggle)
self.assertEqual(w1.save_id, UUID(1))
self.assertEqual(w1.count, 0)
# mismatch in save_condition prevents save and raise exception
flip(w1)
self.assertTrue(w1.toggle)
self.assertEqual(w1.count, 1)
self.assertRaises(SaveConditionError,
w1.save, save_condition={'save_id': UUID(42)})
w1.reload()
self.assertFalse(w1.toggle)
self.assertEqual(w1.count, 0)
# matched save_condition allows save
flip(w1)
self.assertTrue(w1.toggle)
self.assertEqual(w1.count, 1)
w1.save(save_condition={'save_id': UUID(1)})
w1.reload()
self.assertTrue(w1.toggle)
self.assertEqual(w1.count, 1)
# save_condition can be used to ensure atomic read & updates
# i.e., prevent interleaved reads and writes from separate contexts
w2 = Widget.objects.get()
self.assertEqual(w1, w2)
old_id = w1.save_id
flip(w1)
w1.save_id = UUID(2)
w1.save(save_condition={'save_id': old_id})
w1.reload()
self.assertFalse(w1.toggle)
self.assertEqual(w1.count, 2)
flip(w2)
flip(w2)
self.assertRaises(SaveConditionError,
w2.save, save_condition={'save_id': old_id})
w2.reload()
self.assertFalse(w2.toggle)
self.assertEqual(w2.count, 2)
# save_condition uses mongoengine-style operator syntax
flip(w1)
w1.save(save_condition={'count__lt': w1.count})
w1.reload()
self.assertTrue(w1.toggle)
self.assertEqual(w1.count, 3)
flip(w1)
self.assertRaises(SaveConditionError,
w1.save, save_condition={'count__gte': w1.count})
w1.reload()
self.assertTrue(w1.toggle)
self.assertEqual(w1.count, 3)
def test_update(self):
"""Ensure that an existing document is updated instead of be
overwritten.
"""
# Create person object and save it to the database
person = self.Person(name='Test User', age=30)
person.save()
# Create same person object, with same id, without age
same_person = self.Person(name='Test')
same_person.id = person.id
same_person.save()
# Confirm only one object
self.assertEqual(self.Person.objects.count(), 1)
# reload
person.reload()
same_person.reload()
# Confirm the same
self.assertEqual(person, same_person)
self.assertEqual(person.name, same_person.name)
self.assertEqual(person.age, same_person.age)
# Confirm the saved values
self.assertEqual(person.name, 'Test')
self.assertEqual(person.age, 30)
# Test only / exclude only updates included fields
person = self.Person.objects.only('name').get()
person.name = 'User'
person.save()
person.reload()
self.assertEqual(person.name, 'User')
self.assertEqual(person.age, 30)
# test exclude only updates set fields
person = self.Person.objects.exclude('name').get()
person.age = 21
person.save()
person.reload()
self.assertEqual(person.name, 'User')
self.assertEqual(person.age, 21)
# Test only / exclude can set non excluded / included fields
person = self.Person.objects.only('name').get()
person.name = 'Test'
person.age = 30
person.save()
person.reload()
self.assertEqual(person.name, 'Test')
self.assertEqual(person.age, 30)
# test exclude only updates set fields
person = self.Person.objects.exclude('name').get()
person.name = 'User'
person.age = 21
person.save()
person.reload()
self.assertEqual(person.name, 'User')
self.assertEqual(person.age, 21)
# Confirm does remove unrequired fields
person = self.Person.objects.exclude('name').get()
person.age = None
person.save()
person.reload()
self.assertEqual(person.name, 'User')
self.assertEqual(person.age, None)
person = self.Person.objects.get()
person.name = None
person.age = None
person.save()
person.reload()
self.assertEqual(person.name, None)
self.assertEqual(person.age, None)
def test_update_rename_operator(self):
"""Test the $rename operator."""
coll = self.Person._get_collection()
doc = self.Person(name='John').save()
raw_doc = coll.find_one({'_id': doc.pk})
self.assertEqual(set(raw_doc.keys()), set(['_id', '_cls', 'name']))
doc.update(rename__name='first_name')
raw_doc = coll.find_one({'_id': doc.pk})
self.assertEqual(set(raw_doc.keys()),
set(['_id', '_cls', 'first_name']))
self.assertEqual(raw_doc['first_name'], 'John')
def test_inserts_if_you_set_the_pk(self):
p1 = self.Person(name='p1', id=bson.ObjectId()).save()
p2 = self.Person(name='p2')
p2.id = bson.ObjectId()
p2.save()
self.assertEqual(2, self.Person.objects.count())
def test_can_save_if_not_included(self):
class EmbeddedDoc(EmbeddedDocument):
pass
class Simple(Document):
pass
class Doc(Document):
string_field = StringField(default='1')
int_field = IntField(default=1)
float_field = FloatField(default=1.1)
boolean_field = BooleanField(default=True)
datetime_field = DateTimeField(default=datetime.now)
embedded_document_field = EmbeddedDocumentField(
EmbeddedDoc, default=lambda: EmbeddedDoc())
list_field = ListField(default=lambda: [1, 2, 3])
dict_field = DictField(default=lambda: {"hello": "world"})
objectid_field = ObjectIdField(default=bson.ObjectId)
reference_field = ReferenceField(Simple, default=lambda:
Simple().save())
map_field = MapField(IntField(), default=lambda: {"simple": 1})
decimal_field = DecimalField(default=1.0)
complex_datetime_field = ComplexDateTimeField(default=datetime.now)
url_field = URLField(default="http://mongoengine.org")
dynamic_field = DynamicField(default=1)
generic_reference_field = GenericReferenceField(
default=lambda: Simple().save())
sorted_list_field = SortedListField(IntField(),
default=lambda: [1, 2, 3])
email_field = EmailField(default="ross@example.com")
geo_point_field = GeoPointField(default=lambda: [1, 2])
sequence_field = SequenceField()
uuid_field = UUIDField(default=uuid.uuid4)
generic_embedded_document_field = GenericEmbeddedDocumentField(
default=lambda: EmbeddedDoc())
Simple.drop_collection()
Doc.drop_collection()
Doc().save()
my_doc = Doc.objects.only("string_field").first()
my_doc.string_field = "string"
my_doc.save()
my_doc = Doc.objects.get(string_field="string")
self.assertEqual(my_doc.string_field, "string")
self.assertEqual(my_doc.int_field, 1)
def test_document_update(self):
# try updating a non-saved document
with self.assertRaises(OperationError):
person = self.Person(name='dcrosta')
person.update(set__name='Dan Crosta')
author = self.Person(name='dcrosta')
author.save()
author.update(set__name='Dan Crosta')
author.reload()
p1 = self.Person.objects.first()
self.assertEqual(p1.name, author.name)
# try sending an empty update
with self.assertRaises(OperationError):
person = self.Person.objects.first()
person.update()
# update that doesn't explicitly specify an operator should default
# to 'set__'
person = self.Person.objects.first()
person.update(name="Dan")
person.reload()
self.assertEqual("Dan", person.name)
def test_update_unique_field(self):
class Doc(Document):
name = StringField(unique=True)
doc1 = Doc(name="first").save()
doc2 = Doc(name="second").save()
with self.assertRaises(NotUniqueError):
doc2.update(set__name=doc1.name)
def test_embedded_update(self):
"""Test update on `EmbeddedDocumentField` fields."""
class Page(EmbeddedDocument):
log_message = StringField(verbose_name="Log message",
required=True)
class Site(Document):
page = EmbeddedDocumentField(Page)
Site.drop_collection()
site = Site(page=Page(log_message="Warning: Dummy message"))
site.save()
# Update
site = Site.objects.first()
site.page.log_message = "Error: Dummy message"
site.save()
site = Site.objects.first()
self.assertEqual(site.page.log_message, "Error: Dummy message")
def test_embedded_update_db_field(self):
"""Test update on `EmbeddedDocumentField` fields when db_field
is other than default.
"""
class Page(EmbeddedDocument):
log_message = StringField(verbose_name="Log message",
db_field="page_log_message",
required=True)
class Site(Document):
page = EmbeddedDocumentField(Page)
Site.drop_collection()
site = Site(page=Page(log_message="Warning: Dummy message"))
site.save()
# Update
site = Site.objects.first()
site.page.log_message = "Error: Dummy message"
site.save()
site = Site.objects.first()
self.assertEqual(site.page.log_message, "Error: Dummy message")
def test_save_only_changed_fields(self):
"""Ensure save only sets / unsets changed fields."""
class User(self.Person):
active = BooleanField(default=True)
User.drop_collection()
# Create person object and save it to the database
user = User(name='Test User', age=30, active=True)
user.save()
user.reload()
# Simulated Race condition
same_person = self.Person.objects.get()
same_person.active = False
user.age = 21
user.save()
same_person.name = 'User'
same_person.save()
person = self.Person.objects.get()
self.assertEqual(person.name, 'User')
self.assertEqual(person.age, 21)
self.assertEqual(person.active, False)
def test_query_count_when_saving(self):
"""Ensure references don't cause extra fetches when saving"""
class Organization(Document):
name = StringField()
class User(Document):
name = StringField()
orgs = ListField(ReferenceField('Organization'))
class Feed(Document):
name = StringField()
class UserSubscription(Document):
name = StringField()
user = ReferenceField(User)
feed = ReferenceField(Feed)
Organization.drop_collection()
User.drop_collection()
Feed.drop_collection()
UserSubscription.drop_collection()
o1 = Organization(name="o1").save()
o2 = Organization(name="o2").save()
u1 = User(name="Ross", orgs=[o1, o2]).save()
f1 = Feed(name="MongoEngine").save()
sub = UserSubscription(user=u1, feed=f1).save()
user = User.objects.first()
# Even if stored as ObjectId's internally mongoengine uses DBRefs
# As ObjectId's aren't automatically derefenced
self.assertTrue(isinstance(user._data['orgs'][0], DBRef))
self.assertTrue(isinstance(user.orgs[0], Organization))
self.assertTrue(isinstance(user._data['orgs'][0], Organization))
# Changing a value
with query_counter() as q:
self.assertEqual(q, 0)
sub = UserSubscription.objects.first()
self.assertEqual(q, 1)
sub.name = "Test Sub"
sub.save()
self.assertEqual(q, 2)
# Changing a value that will cascade
with query_counter() as q:
self.assertEqual(q, 0)
sub = UserSubscription.objects.first()
self.assertEqual(q, 1)
sub.user.name = "Test"
self.assertEqual(q, 2)
sub.save(cascade=True)
self.assertEqual(q, 3)
# Changing a value and one that will cascade
with query_counter() as q:
self.assertEqual(q, 0)
sub = UserSubscription.objects.first()
sub.name = "Test Sub 2"
self.assertEqual(q, 1)
sub.user.name = "Test 2"
self.assertEqual(q, 2)
sub.save(cascade=True)
self.assertEqual(q, 4) # One for the UserSub and one for the User
# Saving with just the refs
with query_counter() as q:
self.assertEqual(q, 0)
sub = UserSubscription(user=u1.pk, feed=f1.pk)
self.assertEqual(q, 0)
sub.save()
self.assertEqual(q, 1)
# Saving with just the refs on a ListField
with query_counter() as q:
self.assertEqual(q, 0)
User(name="Bob", orgs=[o1.pk, o2.pk]).save()
self.assertEqual(q, 1)
# Saving new objects
with query_counter() as q:
self.assertEqual(q, 0)
user = User.objects.first()
self.assertEqual(q, 1)
feed = Feed.objects.first()
self.assertEqual(q, 2)
sub = UserSubscription(user=user, feed=feed)
self.assertEqual(q, 2) # Check no change
sub.save()
self.assertEqual(q, 3)
def test_set_unset_one_operation(self):
"""Ensure that $set and $unset actions are performed in the
same operation.
"""
class FooBar(Document):
foo = StringField(default=None)
bar = StringField(default=None)
FooBar.drop_collection()
# write an entity with a single prop
foo = FooBar(foo='foo').save()
self.assertEqual(foo.foo, 'foo')
del foo.foo
foo.bar = 'bar'
with query_counter() as q:
self.assertEqual(0, q)
foo.save()
self.assertEqual(1, q)
def test_save_only_changed_fields_recursive(self):
"""Ensure save only sets / unsets changed fields."""
class Comment(EmbeddedDocument):
published = BooleanField(default=True)
class User(self.Person):
comments_dict = DictField()
comments = ListField(EmbeddedDocumentField(Comment))
active = BooleanField(default=True)
User.drop_collection()
# Create person object and save it to the database
person = User(name='Test User', age=30, active=True)
person.comments.append(Comment())
person.save()
person.reload()
person = self.Person.objects.get()
self.assertTrue(person.comments[0].published)
person.comments[0].published = False
person.save()
person = self.Person.objects.get()
self.assertFalse(person.comments[0].published)
# Simple dict w
person.comments_dict['first_post'] = Comment()
person.save()
person = self.Person.objects.get()
self.assertTrue(person.comments_dict['first_post'].published)
person.comments_dict['first_post'].published = False
person.save()
person = self.Person.objects.get()
self.assertFalse(person.comments_dict['first_post'].published)
def test_delete(self):
"""Ensure that document may be deleted using the delete method."""
person = self.Person(name="Test User", age=30)
person.save()
self.assertEqual(self.Person.objects.count(), 1)
person.delete()
self.assertEqual(self.Person.objects.count(), 0)
def test_save_custom_id(self):
"""Ensure that a document may be saved with a custom _id."""
# Create person object and save it to the database
person = self.Person(name='Test User', age=30,
id='497ce96f395f2f052a494fd4')
person.save()
# Ensure that the object is in the database with the correct _id
collection = self.db[self.Person._get_collection_name()]
person_obj = collection.find_one({'name': 'Test User'})
self.assertEqual(str(person_obj['_id']), '497ce96f395f2f052a494fd4')
def test_save_custom_pk(self):
"""Ensure that a document may be saved with a custom _id using
pk alias.
"""
# Create person object and save it to the database
person = self.Person(name='Test User', age=30,
pk='497ce96f395f2f052a494fd4')
person.save()
# Ensure that the object is in the database with the correct _id
collection = self.db[self.Person._get_collection_name()]
person_obj = collection.find_one({'name': 'Test User'})
self.assertEqual(str(person_obj['_id']), '497ce96f395f2f052a494fd4')
def test_save_list(self):
"""Ensure that a list field may be properly saved."""
class Comment(EmbeddedDocument):
content = StringField()
class BlogPost(Document):
content = StringField()
comments = ListField(EmbeddedDocumentField(Comment))
tags = ListField(StringField())
BlogPost.drop_collection()
post = BlogPost(content='Went for a walk today...')
post.tags = tags = ['fun', 'leisure']
comments = [Comment(content='Good for you'), Comment(content='Yay.')]
post.comments = comments
post.save()
collection = self.db[BlogPost._get_collection_name()]
post_obj = collection.find_one()
self.assertEqual(post_obj['tags'], tags)
for comment_obj, comment in zip(post_obj['comments'], comments):
self.assertEqual(comment_obj['content'], comment['content'])
def test_list_search_by_embedded(self):
class User(Document):
username = StringField(required=True)
meta = {'allow_inheritance': False}
class Comment(EmbeddedDocument):
comment = StringField()
user = ReferenceField(User,
required=True)
meta = {'allow_inheritance': False}
class Page(Document):
comments = ListField(EmbeddedDocumentField(Comment))
meta = {'allow_inheritance': False,
'indexes': [
{'fields': ['comments.user']}
]}
User.drop_collection()
Page.drop_collection()
u1 = User(username="wilson")
u1.save()
u2 = User(username="rozza")
u2.save()
u3 = User(username="hmarr")
u3.save()
p1 = Page(comments=[Comment(user=u1, comment="Its very good"),
Comment(user=u2, comment="Hello world"),
Comment(user=u3, comment="Ping Pong"),
Comment(user=u1, comment="I like a beer")])
p1.save()
p2 = Page(comments=[Comment(user=u1, comment="Its very good"),
Comment(user=u2, comment="Hello world")])
p2.save()
p3 = Page(comments=[Comment(user=u3, comment="Its very good")])
p3.save()
p4 = Page(comments=[Comment(user=u2, comment="Heavy Metal song")])
p4.save()
self.assertEqual(
[p1, p2],
list(Page.objects.filter(comments__user=u1)))
self.assertEqual(
[p1, p2, p4],
list(Page.objects.filter(comments__user=u2)))
self.assertEqual(
[p1, p3],
list(Page.objects.filter(comments__user=u3)))
def test_save_embedded_document(self):
"""Ensure that a document with an embedded document field may
be saved in the database.
"""
class EmployeeDetails(EmbeddedDocument):
position = StringField()
class Employee(self.Person):
salary = IntField()
details = EmbeddedDocumentField(EmployeeDetails)
# Create employee object and save it to the database
employee = Employee(name='Test Employee', age=50, salary=20000)
employee.details = EmployeeDetails(position='Developer')
employee.save()
# Ensure that the object is in the database
collection = self.db[self.Person._get_collection_name()]
employee_obj = collection.find_one({'name': 'Test Employee'})
self.assertEqual(employee_obj['name'], 'Test Employee')
self.assertEqual(employee_obj['age'], 50)
# Ensure that the 'details' embedded object saved correctly
self.assertEqual(employee_obj['details']['position'], 'Developer')
def test_embedded_update_after_save(self):
"""Test update of `EmbeddedDocumentField` attached to a newly
saved document.
"""
class Page(EmbeddedDocument):
log_message = StringField(verbose_name="Log message",
required=True)
class Site(Document):
page = EmbeddedDocumentField(Page)
Site.drop_collection()
site = Site(page=Page(log_message="Warning: Dummy message"))
site.save()
# Update
site.page.log_message = "Error: Dummy message"
site.save()
site = Site.objects.first()
self.assertEqual(site.page.log_message, "Error: Dummy message")
def test_updating_an_embedded_document(self):
"""Ensure that a document with an embedded document field may
be saved in the database.
"""
class EmployeeDetails(EmbeddedDocument):
position = StringField()
class Employee(self.Person):
salary = IntField()
details = EmbeddedDocumentField(EmployeeDetails)
# Create employee object and save it to the database
employee = Employee(name='Test Employee', age=50, salary=20000)
employee.details = EmployeeDetails(position='Developer')
employee.save()
# Test updating an embedded document
promoted_employee = Employee.objects.get(name='Test Employee')
promoted_employee.details.position = 'Senior Developer'
promoted_employee.save()
promoted_employee.reload()
self.assertEqual(promoted_employee.name, 'Test Employee')
self.assertEqual(promoted_employee.age, 50)
# Ensure that the 'details' embedded object saved correctly
self.assertEqual(
promoted_employee.details.position, 'Senior Developer')
# Test removal
promoted_employee.details = None
promoted_employee.save()
promoted_employee.reload()
self.assertEqual(promoted_employee.details, None)
def test_object_mixins(self):
class NameMixin(object):
name = StringField()
class Foo(EmbeddedDocument, NameMixin):
quantity = IntField()
self.assertEqual(['name', 'quantity'], sorted(Foo._fields.keys()))
class Bar(Document, NameMixin):
widgets = StringField()
self.assertEqual(['id', 'name', 'widgets'], sorted(Bar._fields.keys()))
def test_mixin_inheritance(self):
class BaseMixIn(object):
count = IntField()
data = StringField()
class DoubleMixIn(BaseMixIn):
comment = StringField()
class TestDoc(Document, DoubleMixIn):
age = IntField()
TestDoc.drop_collection()
t = TestDoc(count=12, data="test",
comment="great!", age=19)
t.save()
t = TestDoc.objects.first()
self.assertEqual(t.age, 19)
self.assertEqual(t.comment, "great!")
self.assertEqual(t.data, "test")
self.assertEqual(t.count, 12)
def test_save_reference(self):
"""Ensure that a document reference field may be saved in the
database.
"""
class BlogPost(Document):
meta = {'collection': 'blogpost_1'}
content = StringField()
author = ReferenceField(self.Person)
BlogPost.drop_collection()
author = self.Person(name='Test User')
author.save()
post = BlogPost(content='Watched some TV today... how exciting.')
# Should only reference author when saving
post.author = author
post.save()
post_obj = BlogPost.objects.first()
# Test laziness
self.assertTrue(isinstance(post_obj._data['author'],
bson.DBRef))
self.assertTrue(isinstance(post_obj.author, self.Person))
self.assertEqual(post_obj.author.name, 'Test User')
# Ensure that the dereferenced object may be changed and saved
post_obj.author.age = 25
post_obj.author.save()
author = list(self.Person.objects(name='Test User'))[-1]
self.assertEqual(author.age, 25)
def test_duplicate_db_fields_raise_invalid_document_error(self):
"""Ensure a InvalidDocumentError is thrown if duplicate fields
declare the same db_field.
"""
with self.assertRaises(InvalidDocumentError):
class Foo(Document):
name = StringField()
name2 = StringField(db_field='name')
def test_invalid_son(self):
"""Raise an error if loading invalid data."""
class Occurrence(EmbeddedDocument):
number = IntField()
class Word(Document):
stem = StringField()
count = IntField(default=1)
forms = ListField(StringField(), default=list)
occurs = ListField(EmbeddedDocumentField(Occurrence), default=list)
with self.assertRaises(InvalidDocumentError):
Word._from_son({
'stem': [1, 2, 3],
'forms': 1,
'count': 'one',
'occurs': {"hello": None}
})
# Tests for issue #1438: https://github.com/MongoEngine/mongoengine/issues/1438
with self.assertRaises(ValueError):
Word._from_son('this is not a valid SON dict')
def test_reverse_delete_rule_cascade_and_nullify(self):
"""Ensure that a referenced document is also deleted upon
deletion.
"""
class BlogPost(Document):
content = StringField()
author = ReferenceField(self.Person, reverse_delete_rule=CASCADE)
reviewer = ReferenceField(self.Person, reverse_delete_rule=NULLIFY)
self.Person.drop_collection()
BlogPost.drop_collection()
author = self.Person(name='Test User')
author.save()
reviewer = self.Person(name='Re Viewer')
reviewer.save()
post = BlogPost(content='Watched some TV')
post.author = author
post.reviewer = reviewer
post.save()
reviewer.delete()
# No effect on the BlogPost
self.assertEqual(BlogPost.objects.count(), 1)
self.assertEqual(BlogPost.objects.get().reviewer, None)
# Delete the Person, which should lead to deletion of the BlogPost, too
author.delete()
self.assertEqual(BlogPost.objects.count(), 0)
def test_reverse_delete_rule_with_custom_id_field(self):
"""Ensure that a referenced document with custom primary key
is also deleted upon deletion.
"""
class User(Document):
name = StringField(primary_key=True)
class Book(Document):
author = ReferenceField(User, reverse_delete_rule=CASCADE)
reviewer = ReferenceField(User, reverse_delete_rule=NULLIFY)
User.drop_collection()
Book.drop_collection()
user = User(name='Mike').save()
reviewer = User(name='John').save()
book = Book(author=user, reviewer=reviewer).save()
reviewer.delete()
self.assertEqual(Book.objects.count(), 1)
self.assertEqual(Book.objects.get().reviewer, None)
user.delete()
self.assertEqual(Book.objects.count(), 0)
def test_reverse_delete_rule_with_shared_id_among_collections(self):
"""Ensure that cascade delete rule doesn't mix id among
collections.
"""
class User(Document):
id = IntField(primary_key=True)
class Book(Document):
id = IntField(primary_key=True)
author = ReferenceField(User, reverse_delete_rule=CASCADE)
User.drop_collection()
Book.drop_collection()
user_1 = User(id=1).save()
user_2 = User(id=2).save()
book_1 = Book(id=1, author=user_2).save()
book_2 = Book(id=2, author=user_1).save()
user_2.delete()
# Deleting user_2 should also delete book_1 but not book_2
self.assertEqual(Book.objects.count(), 1)
self.assertEqual(Book.objects.get(), book_2)
user_3 = User(id=3).save()
book_3 = Book(id=3, author=user_3).save()
user_3.delete()
# Deleting user_3 should also delete book_3
self.assertEqual(Book.objects.count(), 1)
self.assertEqual(Book.objects.get(), book_2)
def test_reverse_delete_rule_with_document_inheritance(self):
"""Ensure that a referenced document is also deleted upon
deletion of a child document.
"""
class Writer(self.Person):
pass
class BlogPost(Document):
content = StringField()
author = ReferenceField(self.Person, reverse_delete_rule=CASCADE)
reviewer = ReferenceField(self.Person, reverse_delete_rule=NULLIFY)
self.Person.drop_collection()
BlogPost.drop_collection()
author = Writer(name='Test User')
author.save()
reviewer = Writer(name='Re Viewer')
reviewer.save()
post = BlogPost(content='Watched some TV')
post.author = author
post.reviewer = reviewer
post.save()
reviewer.delete()
self.assertEqual(BlogPost.objects.count(), 1)
self.assertEqual(BlogPost.objects.get().reviewer, None)
# Delete the Writer should lead to deletion of the BlogPost
author.delete()
self.assertEqual(BlogPost.objects.count(), 0)
def test_reverse_delete_rule_cascade_and_nullify_complex_field(self):
"""Ensure that a referenced document is also deleted upon
deletion for complex fields.
"""
class BlogPost(Document):
content = StringField()
authors = ListField(ReferenceField(
self.Person, reverse_delete_rule=CASCADE))
reviewers = ListField(ReferenceField(
self.Person, reverse_delete_rule=NULLIFY))
self.Person.drop_collection()
BlogPost.drop_collection()
author = self.Person(name='Test User')
author.save()
reviewer = self.Person(name='Re Viewer')
reviewer.save()
post = BlogPost(content='Watched some TV')
post.authors = [author]
post.reviewers = [reviewer]
post.save()
# Deleting the reviewer should have no effect on the BlogPost
reviewer.delete()
self.assertEqual(BlogPost.objects.count(), 1)
self.assertEqual(BlogPost.objects.get().reviewers, [])
# Delete the Person, which should lead to deletion of the BlogPost, too
author.delete()
self.assertEqual(BlogPost.objects.count(), 0)
def test_reverse_delete_rule_cascade_triggers_pre_delete_signal(self):
"""Ensure the pre_delete signal is triggered upon a cascading
deletion setup a blog post with content, an author and editor
delete the author which triggers deletion of blogpost via
cascade blog post's pre_delete signal alters an editor attribute.
"""
class Editor(self.Person):
review_queue = IntField(default=0)
class BlogPost(Document):
content = StringField()
author = ReferenceField(self.Person, reverse_delete_rule=CASCADE)
editor = ReferenceField(Editor)
@classmethod
def pre_delete(cls, sender, document, **kwargs):
# decrement the docs-to-review count
document.editor.update(dec__review_queue=1)
signals.pre_delete.connect(BlogPost.pre_delete, sender=BlogPost)
self.Person.drop_collection()
BlogPost.drop_collection()
Editor.drop_collection()
author = self.Person(name='Will S.').save()
editor = Editor(name='Max P.', review_queue=1).save()
BlogPost(content='wrote some books', author=author,
editor=editor).save()
# delete the author, the post is also deleted due to the CASCADE rule
author.delete()
# the pre-delete signal should have decremented the editor's queue
editor = Editor.objects(name='Max P.').get()
self.assertEqual(editor.review_queue, 0)
def test_two_way_reverse_delete_rule(self):
"""Ensure that Bi-Directional relationships work with
reverse_delete_rule
"""
class Bar(Document):
content = StringField()
foo = ReferenceField('Foo')
class Foo(Document):
content = StringField()
bar = ReferenceField(Bar)
Bar.register_delete_rule(Foo, 'bar', NULLIFY)
Foo.register_delete_rule(Bar, 'foo', NULLIFY)
Bar.drop_collection()
Foo.drop_collection()
b = Bar(content="Hello")
b.save()
f = Foo(content="world", bar=b)
f.save()
b.foo = f
b.save()
f.delete()
self.assertEqual(Bar.objects.count(), 1) # No effect on the BlogPost
self.assertEqual(Bar.objects.get().foo, None)
def test_invalid_reverse_delete_rule_raise_errors(self):
with self.assertRaises(InvalidDocumentError):
class Blog(Document):
content = StringField()
authors = MapField(ReferenceField(
self.Person, reverse_delete_rule=CASCADE))
reviewers = DictField(
field=ReferenceField(
self.Person,
reverse_delete_rule=NULLIFY))
with self.assertRaises(InvalidDocumentError):
class Parents(EmbeddedDocument):
father = ReferenceField('Person', reverse_delete_rule=DENY)
mother = ReferenceField('Person', reverse_delete_rule=DENY)
def test_reverse_delete_rule_cascade_recurs(self):
"""Ensure that a chain of documents is also deleted upon
cascaded deletion.
"""
class BlogPost(Document):
content = StringField()
author = ReferenceField(self.Person, reverse_delete_rule=CASCADE)
class Comment(Document):
text = StringField()
post = ReferenceField(BlogPost, reverse_delete_rule=CASCADE)
self.Person.drop_collection()
BlogPost.drop_collection()
Comment.drop_collection()
author = self.Person(name='Test User')
author.save()
post = BlogPost(content='Watched some TV')
post.author = author
post.save()
comment = Comment(text='Kudos.')
comment.post = post
comment.save()
# Delete the Person, which should lead to deletion of the BlogPost,
# and, recursively to the Comment, too
author.delete()
self.assertEqual(Comment.objects.count(), 0)
def test_reverse_delete_rule_deny(self):
"""Ensure that a document cannot be referenced if there are
still documents referring to it.
"""
class BlogPost(Document):
content = StringField()
author = ReferenceField(self.Person, reverse_delete_rule=DENY)
self.Person.drop_collection()
BlogPost.drop_collection()
author = self.Person(name='Test User')
author.save()
post = BlogPost(content='Watched some TV')
post.author = author
post.save()
# Delete the Person should be denied
self.assertRaises(OperationError, author.delete) # Should raise denied error
self.assertEqual(BlogPost.objects.count(), 1) # No objects may have been deleted
self.assertEqual(self.Person.objects.count(), 1)
# Other users, that don't have BlogPosts must be removable, like normal
author = self.Person(name='Another User')
author.save()
self.assertEqual(self.Person.objects.count(), 2)
author.delete()
self.assertEqual(self.Person.objects.count(), 1)
def subclasses_and_unique_keys_works(self):
class A(Document):
pass
class B(A):
foo = BooleanField(unique=True)
A.drop_collection()
B.drop_collection()
A().save()
A().save()
B(foo=True).save()
self.assertEqual(A.objects.count(), 2)
self.assertEqual(B.objects.count(), 1)
def test_document_hash(self):
"""Test document in list, dict, set."""
class User(Document):
pass
class BlogPost(Document):
pass
# Clear old data
User.drop_collection()
BlogPost.drop_collection()
u1 = User.objects.create()
u2 = User.objects.create()
u3 = User.objects.create()
u4 = User() # New object
b1 = BlogPost.objects.create()
b2 = BlogPost.objects.create()
# Make sure docs are properly identified in a list (__eq__ is used
# for the comparison).
all_user_list = list(User.objects.all())
self.assertTrue(u1 in all_user_list)
self.assertTrue(u2 in all_user_list)
self.assertTrue(u3 in all_user_list)
self.assertTrue(u4 not in all_user_list) # New object
self.assertTrue(b1 not in all_user_list) # Other object
self.assertTrue(b2 not in all_user_list) # Other object
# Make sure docs can be used as keys in a dict (__hash__ is used
# for hashing the docs).
all_user_dic = {}
for u in User.objects.all():
all_user_dic[u] = "OK"
self.assertEqual(all_user_dic.get(u1, False), "OK")
self.assertEqual(all_user_dic.get(u2, False), "OK")
self.assertEqual(all_user_dic.get(u3, False), "OK")
self.assertEqual(all_user_dic.get(u4, False), False) # New object
self.assertEqual(all_user_dic.get(b1, False), False) # Other object
self.assertEqual(all_user_dic.get(b2, False), False) # Other object
# Make sure docs are properly identified in a set (__hash__ is used
# for hashing the docs).
all_user_set = set(User.objects.all())
self.assertTrue(u1 in all_user_set)
self.assertTrue(u4 not in all_user_set)
self.assertTrue(b1 not in all_user_list)
self.assertTrue(b2 not in all_user_list)
# Make sure duplicate docs aren't accepted in the set
self.assertEqual(len(all_user_set), 3)
all_user_set.add(u1)
all_user_set.add(u2)
all_user_set.add(u3)
self.assertEqual(len(all_user_set), 3)
def test_picklable(self):
pickle_doc = PickleTest(number=1, string="One", lists=['1', '2'])
pickle_doc.embedded = PickleEmbedded()
pickled_doc = pickle.dumps(pickle_doc) # make sure pickling works even before the doc is saved
pickle_doc.save()
pickled_doc = pickle.dumps(pickle_doc)
resurrected = pickle.loads(pickled_doc)
self.assertEqual(resurrected, pickle_doc)
# Test pickling changed data
pickle_doc.lists.append("3")
pickled_doc = pickle.dumps(pickle_doc)
resurrected = pickle.loads(pickled_doc)
self.assertEqual(resurrected, pickle_doc)
resurrected.string = "Two"
resurrected.save()
pickle_doc = PickleTest.objects.first()
self.assertEqual(resurrected, pickle_doc)
self.assertEqual(pickle_doc.string, "Two")
self.assertEqual(pickle_doc.lists, ["1", "2", "3"])
def test_regular_document_pickle(self):
pickle_doc = PickleTest(number=1, string="One", lists=['1', '2'])
pickled_doc = pickle.dumps(pickle_doc) # make sure pickling works even before the doc is saved
pickle_doc.save()
pickled_doc = pickle.dumps(pickle_doc)
# Test that when a document's definition changes the new
# definition is used
fixtures.PickleTest = fixtures.NewDocumentPickleTest
resurrected = pickle.loads(pickled_doc)
self.assertEqual(resurrected.__class__,
fixtures.NewDocumentPickleTest)
self.assertEqual(resurrected._fields_ordered,
fixtures.NewDocumentPickleTest._fields_ordered)
self.assertNotEqual(resurrected._fields_ordered,
pickle_doc._fields_ordered)
# The local PickleTest is still a ref to the original
fixtures.PickleTest = PickleTest
def test_dynamic_document_pickle(self):
pickle_doc = PickleDynamicTest(
name="test", number=1, string="One", lists=['1', '2'])
pickle_doc.embedded = PickleDynamicEmbedded(foo="Bar")
pickled_doc = pickle.dumps(pickle_doc) # make sure pickling works even before the doc is saved
pickle_doc.save()
pickled_doc = pickle.dumps(pickle_doc)
resurrected = pickle.loads(pickled_doc)
self.assertEqual(resurrected, pickle_doc)
self.assertEqual(resurrected._fields_ordered,
pickle_doc._fields_ordered)
self.assertEqual(resurrected._dynamic_fields.keys(),
pickle_doc._dynamic_fields.keys())
self.assertEqual(resurrected.embedded, pickle_doc.embedded)
self.assertEqual(resurrected.embedded._fields_ordered,
pickle_doc.embedded._fields_ordered)
self.assertEqual(resurrected.embedded._dynamic_fields.keys(),
pickle_doc.embedded._dynamic_fields.keys())
def test_picklable_on_signals(self):
pickle_doc = PickleSignalsTest(
number=1, string="One", lists=['1', '2'])
pickle_doc.embedded = PickleEmbedded()
pickle_doc.save()
pickle_doc.delete()
def test_override_method_with_field(self):
"""Test creating a field with a field name that would override
the "validate" method.
"""
with self.assertRaises(InvalidDocumentError):
class Blog(Document):
validate = DictField()
def test_mutating_documents(self):
class B(EmbeddedDocument):
field1 = StringField(default='field1')
class A(Document):
b = EmbeddedDocumentField(B, default=lambda: B())
A.drop_collection()
a = A()
a.save()
a.reload()
self.assertEqual(a.b.field1, 'field1')
class C(EmbeddedDocument):
c_field = StringField(default='cfield')
class B(EmbeddedDocument):
field1 = StringField(default='field1')
field2 = EmbeddedDocumentField(C, default=lambda: C())
class A(Document):
b = EmbeddedDocumentField(B, default=lambda: B())
a = A.objects()[0]
a.b.field2.c_field = 'new value'
a.save()
a.reload()
self.assertEqual(a.b.field2.c_field, 'new value')
def test_can_save_false_values(self):
"""Ensures you can save False values on save."""
class Doc(Document):
foo = StringField()
archived = BooleanField(default=False, required=True)
Doc.drop_collection()
d = Doc()
d.save()
d.archived = False
d.save()
self.assertEqual(Doc.objects(archived=False).count(), 1)
def test_can_save_false_values_dynamic(self):
"""Ensures you can save False values on dynamic docs."""
class Doc(DynamicDocument):
foo = StringField()
Doc.drop_collection()
d = Doc()
d.save()
d.archived = False
d.save()
self.assertEqual(Doc.objects(archived=False).count(), 1)
def test_do_not_save_unchanged_references(self):
"""Ensures cascading saves dont auto update"""
class Job(Document):
name = StringField()
class Person(Document):
name = StringField()
age = IntField()
job = ReferenceField(Job)
Job.drop_collection()
Person.drop_collection()
job = Job(name="Job 1")
# job should not have any changed fields after the save
job.save()
person = Person(name="name", age=10, job=job)
from pymongo.collection import Collection
orig_update = Collection.update
try:
def fake_update(*args, **kwargs):
self.fail("Unexpected update for %s" % args[0].name)
return orig_update(*args, **kwargs)
Collection.update = fake_update
person.save()
finally:
Collection.update = orig_update
def test_db_alias_tests(self):
"""DB Alias tests."""
# mongoenginetest - Is default connection alias from setUp()
# Register Aliases
register_connection('testdb-1', 'mongoenginetest2')
register_connection('testdb-2', 'mongoenginetest3')
register_connection('testdb-3', 'mongoenginetest4')
class User(Document):
name = StringField()
meta = {"db_alias": "testdb-1"}
class Book(Document):
name = StringField()
meta = {"db_alias": "testdb-2"}
# Drops
User.drop_collection()
Book.drop_collection()
# Create
bob = User.objects.create(name="Bob")
hp = Book.objects.create(name="Harry Potter")
# Selects
self.assertEqual(User.objects.first(), bob)
self.assertEqual(Book.objects.first(), hp)
# DeReference
class AuthorBooks(Document):
author = ReferenceField(User)
book = ReferenceField(Book)
meta = {"db_alias": "testdb-3"}
# Drops
AuthorBooks.drop_collection()
ab = AuthorBooks.objects.create(author=bob, book=hp)
# select
self.assertEqual(AuthorBooks.objects.first(), ab)
self.assertEqual(AuthorBooks.objects.first().book, hp)
self.assertEqual(AuthorBooks.objects.first().author, bob)
self.assertEqual(AuthorBooks.objects.filter(author=bob).first(), ab)
self.assertEqual(AuthorBooks.objects.filter(book=hp).first(), ab)
# DB Alias
self.assertEqual(User._get_db(), get_db("testdb-1"))
self.assertEqual(Book._get_db(), get_db("testdb-2"))
self.assertEqual(AuthorBooks._get_db(), get_db("testdb-3"))
# Collections
self.assertEqual(
User._get_collection(),
get_db("testdb-1")[User._get_collection_name()])
self.assertEqual(
Book._get_collection(),
get_db("testdb-2")[Book._get_collection_name()])
self.assertEqual(
AuthorBooks._get_collection(),
get_db("testdb-3")[AuthorBooks._get_collection_name()])
def test_db_alias_overrides(self):
"""Test db_alias can be overriden."""
# Register a connection with db_alias testdb-2
register_connection('testdb-2', 'mongoenginetest2')
class A(Document):
"""Uses default db_alias
"""
name = StringField()
meta = {"allow_inheritance": True}
class B(A):
"""Uses testdb-2 db_alias
"""
meta = {"db_alias": "testdb-2"}
A.objects.all()
self.assertEqual('testdb-2', B._meta.get('db_alias'))
self.assertEqual('mongoenginetest',
A._get_collection().database.name)
self.assertEqual('mongoenginetest2',
B._get_collection().database.name)
def test_db_alias_propagates(self):
"""db_alias propagates?"""
register_connection('testdb-1', 'mongoenginetest2')
class A(Document):
name = StringField()
meta = {"db_alias": "testdb-1", "allow_inheritance": True}
class B(A):
pass
self.assertEqual('testdb-1', B._meta.get('db_alias'))
def test_db_ref_usage(self):
"""DB Ref usage in dict_fields."""
class User(Document):
name = StringField()
class Book(Document):
name = StringField()
author = ReferenceField(User)
extra = DictField()
meta = {
'ordering': ['+name']
}
def __unicode__(self):
return self.name
def __str__(self):
return self.name
# Drops
User.drop_collection()
Book.drop_collection()
# Authors
bob = User.objects.create(name="Bob")
jon = User.objects.create(name="Jon")
# Redactors
karl = User.objects.create(name="Karl")
susan = User.objects.create(name="Susan")
peter = User.objects.create(name="Peter")
# Bob
Book.objects.create(name="1", author=bob, extra={
"a": bob.to_dbref(), "b": [karl.to_dbref(), susan.to_dbref()]})
Book.objects.create(name="2", author=bob, extra={
"a": bob.to_dbref(), "b": karl.to_dbref()})
Book.objects.create(name="3", author=bob, extra={
"a": bob.to_dbref(), "c": [jon.to_dbref(), peter.to_dbref()]})
Book.objects.create(name="4", author=bob)
# Jon
Book.objects.create(name="5", author=jon)
Book.objects.create(name="6", author=peter)
Book.objects.create(name="7", author=jon)
Book.objects.create(name="8", author=jon)
Book.objects.create(name="9", author=jon,
extra={"a": peter.to_dbref()})
# Checks
self.assertEqual(",".join([str(b) for b in Book.objects.all()]),
"1,2,3,4,5,6,7,8,9")
# bob related books
self.assertEqual(",".join([str(b) for b in Book.objects.filter(
Q(extra__a=bob) |
Q(author=bob) |
Q(extra__b=bob))]),
"1,2,3,4")
# Susan & Karl related books
self.assertEqual(",".join([str(b) for b in Book.objects.filter(
Q(extra__a__all=[karl, susan]) |
Q(author__all=[karl, susan]) |
Q(extra__b__all=[
karl.to_dbref(), susan.to_dbref()]))
]), "1")
# $Where
self.assertEqual(u",".join([str(b) for b in Book.objects.filter(
__raw__={
"$where": """
function(){
return this.name == '1' ||
this.name == '2';}"""
})]),
"1,2")
def test_switch_db_instance(self):
register_connection('testdb-1', 'mongoenginetest2')
class Group(Document):
name = StringField()
Group.drop_collection()
with switch_db(Group, 'testdb-1') as Group:
Group.drop_collection()
Group(name="hello - default").save()
self.assertEqual(1, Group.objects.count())
group = Group.objects.first()
group.switch_db('testdb-1')
group.name = "hello - testdb!"
group.save()
with switch_db(Group, 'testdb-1') as Group:
group = Group.objects.first()
self.assertEqual("hello - testdb!", group.name)
group = Group.objects.first()
self.assertEqual("hello - default", group.name)
# Slightly contrived now - perform an update
# Only works as they have the same object_id
group.switch_db('testdb-1')
group.update(set__name="hello - update")
with switch_db(Group, 'testdb-1') as Group:
group = Group.objects.first()
self.assertEqual("hello - update", group.name)
Group.drop_collection()
self.assertEqual(0, Group.objects.count())
group = Group.objects.first()
self.assertEqual("hello - default", group.name)
# Totally contrived now - perform a delete
# Only works as they have the same object_id
group.switch_db('testdb-1')
group.delete()
with switch_db(Group, 'testdb-1') as Group:
self.assertEqual(0, Group.objects.count())
group = Group.objects.first()
self.assertEqual("hello - default", group.name)
def test_load_undefined_fields(self):
class User(Document):
name = StringField()
User.drop_collection()
User._get_collection().save({
'name': 'John',
'foo': 'Bar',
'data': [1, 2, 3]
})
self.assertRaises(FieldDoesNotExist, User.objects.first)
def test_load_undefined_fields_with_strict_false(self):
class User(Document):
name = StringField()
meta = {'strict': False}
User.drop_collection()
User._get_collection().save({
'name': 'John',
'foo': 'Bar',
'data': [1, 2, 3]
})
user = User.objects.first()
self.assertEqual(user.name, 'John')
self.assertFalse(hasattr(user, 'foo'))
self.assertEqual(user._data['foo'], 'Bar')
self.assertFalse(hasattr(user, 'data'))
self.assertEqual(user._data['data'], [1, 2, 3])
def test_load_undefined_fields_on_embedded_document(self):
class Thing(EmbeddedDocument):
name = StringField()
class User(Document):
name = StringField()
thing = EmbeddedDocumentField(Thing)
User.drop_collection()
User._get_collection().save({
'name': 'John',
'thing': {
'name': 'My thing',
'foo': 'Bar',
'data': [1, 2, 3]
}
})
self.assertRaises(FieldDoesNotExist, User.objects.first)
def test_load_undefined_fields_on_embedded_document_with_strict_false_on_doc(self):
class Thing(EmbeddedDocument):
name = StringField()
class User(Document):
name = StringField()
thing = EmbeddedDocumentField(Thing)
meta = {'strict': False}
User.drop_collection()
User._get_collection().save({
'name': 'John',
'thing': {
'name': 'My thing',
'foo': 'Bar',
'data': [1, 2, 3]
}
})
self.assertRaises(FieldDoesNotExist, User.objects.first)
def test_load_undefined_fields_on_embedded_document_with_strict_false(self):
class Thing(EmbeddedDocument):
name = StringField()
meta = {'strict': False}
class User(Document):
name = StringField()
thing = EmbeddedDocumentField(Thing)
User.drop_collection()
User._get_collection().save({
'name': 'John',
'thing': {
'name': 'My thing',
'foo': 'Bar',
'data': [1, 2, 3]
}
})
user = User.objects.first()
self.assertEqual(user.name, 'John')
self.assertEqual(user.thing.name, 'My thing')
self.assertFalse(hasattr(user.thing, 'foo'))
self.assertEqual(user.thing._data['foo'], 'Bar')
self.assertFalse(hasattr(user.thing, 'data'))
self.assertEqual(user.thing._data['data'], [1, 2, 3])
def test_spaces_in_keys(self):
class Embedded(DynamicEmbeddedDocument):
pass
class Doc(DynamicDocument):
pass
Doc.drop_collection()
doc = Doc()
setattr(doc, 'hello world', 1)
doc.save()
one = Doc.objects.filter(**{'hello world': 1}).count()
self.assertEqual(1, one)
def test_shard_key(self):
class LogEntry(Document):
machine = StringField()
log = StringField()
meta = {
'shard_key': ('machine',)
}
LogEntry.drop_collection()
log = LogEntry()
log.machine = "Localhost"
log.save()
self.assertTrue(log.id is not None)
log.log = "Saving"
log.save()
# try to change the shard key
with self.assertRaises(OperationError):
log.machine = "127.0.0.1"
def test_shard_key_in_embedded_document(self):
class Foo(EmbeddedDocument):
foo = StringField()
class Bar(Document):
meta = {
'shard_key': ('foo.foo',)
}
foo = EmbeddedDocumentField(Foo)
bar = StringField()
foo_doc = Foo(foo='hello')
bar_doc = Bar(foo=foo_doc, bar='world')
bar_doc.save()
self.assertTrue(bar_doc.id is not None)
bar_doc.bar = 'baz'
bar_doc.save()
# try to change the shard key
with self.assertRaises(OperationError):
bar_doc.foo.foo = 'something'
bar_doc.save()
def test_shard_key_primary(self):
class LogEntry(Document):
machine = StringField(primary_key=True)
log = StringField()
meta = {
'shard_key': ('machine',)
}
LogEntry.drop_collection()
log = LogEntry()
log.machine = "Localhost"
log.save()
self.assertTrue(log.id is not None)
log.log = "Saving"
log.save()
# try to change the shard key
with self.assertRaises(OperationError):
log.machine = "127.0.0.1"
def test_kwargs_simple(self):
class Embedded(EmbeddedDocument):
name = StringField()
class Doc(Document):
doc_name = StringField()
doc = EmbeddedDocumentField(Embedded)
def __eq__(self, other):
return (self.doc_name == other.doc_name and
self.doc == other.doc)
classic_doc = Doc(doc_name="my doc", doc=Embedded(name="embedded doc"))
dict_doc = Doc(**{"doc_name": "my doc",
"doc": {"name": "embedded doc"}})
self.assertEqual(classic_doc, dict_doc)
self.assertEqual(classic_doc._data, dict_doc._data)
def test_kwargs_complex(self):
class Embedded(EmbeddedDocument):
name = StringField()
class Doc(Document):
doc_name = StringField()
docs = ListField(EmbeddedDocumentField(Embedded))
def __eq__(self, other):
return (self.doc_name == other.doc_name and
self.docs == other.docs)
classic_doc = Doc(doc_name="my doc", docs=[
Embedded(name="embedded doc1"),
Embedded(name="embedded doc2")])
dict_doc = Doc(**{"doc_name": "my doc",
"docs": [{"name": "embedded doc1"},
{"name": "embedded doc2"}]})
self.assertEqual(classic_doc, dict_doc)
self.assertEqual(classic_doc._data, dict_doc._data)
def test_positional_creation(self):
"""Ensure that document may be created using positional arguments."""
person = self.Person("Test User", 42)
self.assertEqual(person.name, "Test User")
self.assertEqual(person.age, 42)
def test_mixed_creation(self):
"""Ensure that document may be created using mixed arguments."""
person = self.Person("Test User", age=42)
self.assertEqual(person.name, "Test User")
self.assertEqual(person.age, 42)
def test_positional_creation_embedded(self):
"""Ensure that embedded document may be created using positional
arguments.
"""
job = self.Job("Test Job", 4)
self.assertEqual(job.name, "Test Job")
self.assertEqual(job.years, 4)
def test_mixed_creation_embedded(self):
"""Ensure that embedded document may be created using mixed
arguments.
"""
job = self.Job("Test Job", years=4)
self.assertEqual(job.name, "Test Job")
self.assertEqual(job.years, 4)
def test_mixed_creation_dynamic(self):
"""Ensure that document may be created using mixed arguments."""
class Person(DynamicDocument):
name = StringField()
person = Person("Test User", age=42)
self.assertEqual(person.name, "Test User")
self.assertEqual(person.age, 42)
def test_bad_mixed_creation(self):
"""Ensure that document gives correct error when duplicating
arguments.
"""
with self.assertRaises(TypeError):
return self.Person("Test User", 42, name="Bad User")
def test_data_contains_id_field(self):
"""Ensure that asking for _data returns 'id'."""
class Person(Document):
name = StringField()
Person.drop_collection()
Person(name="Harry Potter").save()
person = Person.objects.first()
self.assertTrue('id' in person._data.keys())
self.assertEqual(person._data.get('id'), person.id)
def test_complex_nesting_document_and_embedded_document(self):
class Macro(EmbeddedDocument):
value = DynamicField(default="UNDEFINED")
class Parameter(EmbeddedDocument):
macros = MapField(EmbeddedDocumentField(Macro))
def expand(self):
self.macros["test"] = Macro()
class Node(Document):
parameters = MapField(EmbeddedDocumentField(Parameter))
def expand(self):
self.flattened_parameter = {}
for parameter_name, parameter in self.parameters.iteritems():
parameter.expand()
class NodesSystem(Document):
name = StringField(required=True)
nodes = MapField(ReferenceField(Node, dbref=False))
def save(self, *args, **kwargs):
for node_name, node in self.nodes.iteritems():
node.expand()
node.save(*args, **kwargs)
super(NodesSystem, self).save(*args, **kwargs)
NodesSystem.drop_collection()
Node.drop_collection()
system = NodesSystem(name="system")
system.nodes["node"] = Node()
system.save()
system.nodes["node"].parameters["param"] = Parameter()
system.save()
system = NodesSystem.objects.first()
self.assertEqual(
"UNDEFINED",
system.nodes["node"].parameters["param"].macros["test"].value)
def test_embedded_document_equality(self):
class Test(Document):
field = StringField(required=True)
class Embedded(EmbeddedDocument):
ref = ReferenceField(Test)
Test.drop_collection()
test = Test(field='123').save() # has id
e = Embedded(ref=test)
f1 = Embedded._from_son(e.to_mongo())
f2 = Embedded._from_son(e.to_mongo())
self.assertEqual(f1, f2)
f1.ref # Dereferences lazily
self.assertEqual(f1, f2)
def test_dbref_equality(self):
class Test2(Document):
name = StringField()
class Test3(Document):
name = StringField()
class Test(Document):
name = StringField()
test2 = ReferenceField('Test2')
test3 = ReferenceField('Test3')
Test.drop_collection()
Test2.drop_collection()
Test3.drop_collection()
t2 = Test2(name='a')
t2.save()
t3 = Test3(name='x')
t3.id = t2.id
t3.save()
t = Test(name='b', test2=t2, test3=t3)
f = Test._from_son(t.to_mongo())
dbref2 = f._data['test2']
obj2 = f.test2
self.assertTrue(isinstance(dbref2, DBRef))
self.assertTrue(isinstance(obj2, Test2))
self.assertTrue(obj2.id == dbref2.id)
self.assertTrue(obj2 == dbref2)
self.assertTrue(dbref2 == obj2)
dbref3 = f._data['test3']
obj3 = f.test3
self.assertTrue(isinstance(dbref3, DBRef))
self.assertTrue(isinstance(obj3, Test3))
self.assertTrue(obj3.id == dbref3.id)
self.assertTrue(obj3 == dbref3)
self.assertTrue(dbref3 == obj3)
self.assertTrue(obj2.id == obj3.id)
self.assertTrue(dbref2.id == dbref3.id)
self.assertFalse(dbref2 == dbref3)
self.assertFalse(dbref3 == dbref2)
self.assertTrue(dbref2 != dbref3)
self.assertTrue(dbref3 != dbref2)
self.assertFalse(obj2 == dbref3)
self.assertFalse(dbref3 == obj2)
self.assertTrue(obj2 != dbref3)
self.assertTrue(dbref3 != obj2)
self.assertFalse(obj3 == dbref2)
self.assertFalse(dbref2 == obj3)
self.assertTrue(obj3 != dbref2)
self.assertTrue(dbref2 != obj3)
def test_default_values(self):
class Person(Document):
created_on = DateTimeField(default=lambda: datetime.utcnow())
name = StringField()
p = Person(name='alon')
p.save()
orig_created_on = Person.objects().only('created_on')[0].created_on
p2 = Person.objects().only('name')[0]
p2.name = 'alon2'
p2.save()
p3 = Person.objects().only('created_on')[0]
self.assertEquals(orig_created_on, p3.created_on)
class Person(Document):
created_on = DateTimeField(default=lambda: datetime.utcnow())
name = StringField()
height = IntField(default=189)
p4 = Person.objects()[0]
p4.save()
self.assertEquals(p4.height, 189)
# However the default will not be fixed in DB
self.assertEquals(Person.objects(height=189).count(), 0)
# alter DB for the new default
coll = Person._get_collection()
for person in Person.objects.as_pymongo():
if 'height' not in person:
person['height'] = 189
coll.save(person)
self.assertEquals(Person.objects(height=189).count(), 1)
def test_from_son(self):
# 771
class MyPerson(self.Person):
meta = dict(shard_key=["id"])
p = MyPerson.from_json('{"name": "name", "age": 27}', created=True)
self.assertEquals(p.id, None)
p.id = "12345" # in case it is not working: "OperationError: Shard Keys are immutable..." will be raised here
p = MyPerson._from_son({"name": "name", "age": 27}, created=True)
self.assertEquals(p.id, None)
p.id = "12345" # in case it is not working: "OperationError: Shard Keys are immutable..." will be raised here
def test_null_field(self):
# 734
class User(Document):
name = StringField()
height = IntField(default=184, null=True)
str_fld = StringField(null=True)
int_fld = IntField(null=True)
flt_fld = FloatField(null=True)
dt_fld = DateTimeField(null=True)
cdt_fld = ComplexDateTimeField(null=True)
User.objects.delete()
u = User(name='user')
u.save()
u_from_db = User.objects.get(name='user')
u_from_db.height = None
u_from_db.save()
self.assertEquals(u_from_db.height, None)
# 864
self.assertEqual(u_from_db.str_fld, None)
self.assertEqual(u_from_db.int_fld, None)
self.assertEqual(u_from_db.flt_fld, None)
self.assertEqual(u_from_db.dt_fld, None)
self.assertEqual(u_from_db.cdt_fld, None)
# 735
User.objects.delete()
u = User(name='user')
u.save()
User.objects(name='user').update_one(set__height=None, upsert=True)
u_from_db = User.objects.get(name='user')
self.assertEquals(u_from_db.height, None)
def test_not_saved_eq(self):
"""Ensure we can compare documents not saved.
"""
class Person(Document):
pass
p = Person()
p1 = Person()
self.assertNotEqual(p, p1)
self.assertEqual(p, p)
def test_list_iter(self):
# 914
class B(EmbeddedDocument):
v = StringField()
class A(Document):
l = ListField(EmbeddedDocumentField(B))
A.objects.delete()
A(l=[B(v='1'), B(v='2'), B(v='3')]).save()
a = A.objects.get()
self.assertEqual(a.l._instance, a)
for idx, b in enumerate(a.l):
self.assertEqual(b._instance, a)
self.assertEqual(idx, 2)
def test_falsey_pk(self):
"""Ensure that we can create and update a document with Falsey PK."""
class Person(Document):
age = IntField(primary_key=True)
height = FloatField()
person = Person()
person.age = 0
person.height = 1.89
person.save()
person.update(set__height=2.0)
if __name__ == '__main__':
unittest.main()
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