Fixed #9786 -- Fixed inequality checking for django.db.models.fields.file.FieldFile class.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9647 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/models/fields/files.py

@@ -29,6 +29,9 @@ class FieldFile(File):
             return self.name == other.name
         return self.name == other
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     # The standard File contains most of the necessary properties, but
     # FieldFiles can be instantiated without a name, so that needs to
     # be checked for here.

tests/regressiontests/file_storage/models.py

@@ -42,6 +42,18 @@ if Image:
 >>> p.mug_width
 16
 
+# Bug #9786: Ensure '==' and '!=' work correctly.
+>>> image_data = open(os.path.join(os.path.dirname(__file__), "test1.png"), 'rb').read()
+>>> p1 = Person(name="Bob")
+>>> p1.mugshot.save("mug", ContentFile(image_data))
+>>> p2 = Person.objects.get(name="Joe")
+>>> p.mugshot == p2.mugshot
+True
+>>> p.mugshot != p2.mugshot
+False
+>>> p.mugshot != p1.mugshot
+True
+
 # Bug #8175: correctly delete files that have been removed off the file system.
 >>> import os
 >>> p2 = Person(name="Fred")