Dynamic fields are now validated on save

(MongoEngine/mongoengine#153) (MongoEngine/mongoengine#154)

tests/document/dynamic.py

@@ -122,6 +122,29 @@ class DynamicTest(unittest.TestCase):
 
         self.assertEqual(1, self.Person.objects(misc__hello='world').count())
 
+    def test_complex_embedded_document_validation(self):
+        """Ensure embedded dynamic documents may be validated"""
+        class Embedded(DynamicEmbeddedDocument):
+            content = URLField()
+
+        class Doc(DynamicDocument):
+            pass
+
+        Doc.drop_collection()
+        doc = Doc()
+
+        embedded_doc_1 = Embedded(content='http://mongoengine.org')
+        embedded_doc_1.validate()
+
+        embedded_doc_2 = Embedded(content='this is not a url')
+        with self.assertRaises(ValidationError):
+            embedded_doc_2.validate()
+
+        doc.embedded_field_1 = embedded_doc_1
+        doc.embedded_field_2 = embedded_doc_2
+        with self.assertRaises(ValidationError):
+            doc.validate()
+
     def test_inheritance(self):
         """Ensure that dynamic document plays nice with inheritance"""
         class Employee(self.Person):