[1.2.X] Migrated reverse_lookup doctests. Thanks to Eric Florenzano

Backport of r13829 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@13838 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/reverse_lookup/models.py

@@ -26,34 +26,3 @@ class Choice(models.Model):
 
     def __unicode__(self):
         return self.name
-
-__test__ = {'API_TESTS':"""
->>> john = User(name="John Doe")
->>> john.save()
->>> jim = User(name="Jim Bo")
->>> jim.save()
->>> first_poll = Poll(question="What's the first question?", creator=john)
->>> first_poll.save()
->>> second_poll = Poll(question="What's the second question?", creator=jim)
->>> second_poll.save()
->>> new_choice = Choice(poll=first_poll, related_poll=second_poll, name="This is the answer.")
->>> new_choice.save()
-
->>> # Reverse lookups by field name:
->>> User.objects.get(poll__question__exact="What's the first question?")
-<User: John Doe>
->>> User.objects.get(poll__question__exact="What's the second question?")
-<User: Jim Bo>
-
->>> # Reverse lookups by related_name:
->>> Poll.objects.get(poll_choice__name__exact="This is the answer.")
-<Poll: What's the first question?>
->>> Poll.objects.get(related_choice__name__exact="This is the answer.")
-<Poll: What's the second question?>
-
->>> # If a related_name is given you can't use the field name instead:
->>> Poll.objects.get(choice__name__exact="This is the answer")
-Traceback (most recent call last):
-    ...
-FieldError: Cannot resolve keyword 'choice' into field. Choices are: creator, id, poll_choice, question, related_choice
-"""}

tests/modeltests/reverse_lookup/tests.py

@@ -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")