--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/modeltests/reverse_lookup/tests.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,49 @@
+from django.test import TestCase
+from django.core.exceptions import FieldError
+
+from models import User, Poll, Choice
+
+class ReverseLookupTests(TestCase):
+
+    def setUp(self):
+        john = User.objects.create(name="John Doe")
+        jim = User.objects.create(name="Jim Bo")
+        first_poll = Poll.objects.create(
+            question="What's the first question?",
+            creator=john
+        )
+        second_poll = Poll.objects.create(
+            question="What's the second question?",
+            creator=jim
+        )
+        new_choice = Choice.objects.create(
+            poll=first_poll,
+            related_poll=second_poll,
+            name="This is the answer."
+        )
+
+    def test_reverse_by_field(self):
+        u1 = User.objects.get(
+            poll__question__exact="What's the first question?"
+        )
+        self.assertEqual(u1.name, "John Doe")
+
+        u2 = User.objects.get(
+            poll__question__exact="What's the second question?"
+        )
+        self.assertEqual(u2.name, "Jim Bo")
+
+    def test_reverse_by_related_name(self):
+        p1 = Poll.objects.get(poll_choice__name__exact="This is the answer.")
+        self.assertEqual(p1.question, "What's the first question?")
+
+        p2 = Poll.objects.get(
+            related_choice__name__exact="This is the answer.")
+        self.assertEqual(p2.question, "What's the second question?")
+
+    def test_reverse_field_name_disallowed(self):
+        """
+        If a related_name is given you can't use the field name instead
+        """
+        self.assertRaises(FieldError, Poll.objects.get,
+            choice__name__exact="This is the answer")