Added unit test for EmbeddedDocument

mongomap/base.py

@@ -1,4 +1,5 @@
 
+
 class ValidationError(Exception):
     pass
 
@@ -98,9 +99,12 @@ class TopLevelDocumentMetaclass(DocumentMetaclass):
     """
 
     def __new__(cls, name, bases, attrs):
+        super_new = super(TopLevelDocumentMetaclass, cls).__new__
         # Classes defined in this package are abstract and should not have 
         # their own metadata with DB collection, etc.
-        super_new =  super(TopLevelDocumentMetaclass, cls).__new__
+        # __metaclass__ is only set on the class with the __metaclass__ 
+        # attribute (i.e. it is not set on subclasses). This differentiates
+        # 'real' documents from the 'Document' class
         if attrs.get('__metaclass__') == TopLevelDocumentMetaclass:
             return super_new(cls, name, bases, attrs)
 

tests/document.py

@@ -1,6 +1,6 @@
 import unittest
 
-from mongomap import Document, StringField, IntField
+from mongomap import *
 
 
 class DocumentTest(unittest.TestCase):
@@ -61,6 +61,14 @@ class DocumentTest(unittest.TestCase):
         person['name'] = 'Another User'
         self.assertEquals(person['name'], 'Another User')
 
+    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(hasattr(Comment, '_meta'))
 
 
 if __name__ == '__main__':