[1.2.X] Migrated the mutually_referential doctests. Thanks to George Sakkis for the patch.

Backport of r14164 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14170 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/mutually_referential/models.py

@@ -8,29 +8,12 @@ from django.db.models import *
 
 class Parent(Model):
     name = CharField(max_length=100)
-    
+
     # Use a simple string for forward declarations.
     bestchild = ForeignKey("Child", null=True, related_name="favoured_by")
 
 class Child(Model):
     name = CharField(max_length=100)
-    
+
     # You can also explicitally specify the related app.
     parent = ForeignKey("mutually_referential.Parent")
-
-__test__ = {'API_TESTS':"""
-# Create a Parent
->>> q = Parent(name='Elizabeth')
->>> q.save()
-
-# Create some children
->>> c = q.child_set.create(name='Charles')
->>> e = q.child_set.create(name='Edward')
-
-# Set the best child
->>> q.bestchild = c
->>> q.save()
-
->>> q.delete()
-
-"""}

tests/modeltests/mutually_referential/tests.py

@@ -0,0 +1,20 @@
+from django.test import TestCase
+from models import Parent, Child
+
+class MutuallyReferentialTests(TestCase):
+
+    def test_mutually_referential(self):
+        # Create a Parent
+        q = Parent(name='Elizabeth')
+        q.save()
+
+        # Create some children
+        c = q.child_set.create(name='Charles')
+        e = q.child_set.create(name='Edward')
+
+        # Set the best child
+        # No assertion require here; if basic assignment and
+        # deletion works, the test passes.
+        q.bestchild = c
+        q.save()
+        q.delete()