diff -r 5ff1fc726848 -r c6bca38c1cbf parts/django/tests/regressiontests/managers_regress/models.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/regressiontests/managers_regress/models.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,100 @@
+"""
+Various edge-cases for model managers.
+"""
+
+from django.db import models
+
+class OnlyFred(models.Manager):
+    def get_query_set(self):
+        return super(OnlyFred, self).get_query_set().filter(name='fred')
+
+class OnlyBarney(models.Manager):
+    def get_query_set(self):
+        return super(OnlyBarney, self).get_query_set().filter(name='barney')
+
+class Value42(models.Manager):
+    def get_query_set(self):
+        return super(Value42, self).get_query_set().filter(value=42)
+
+class AbstractBase1(models.Model):
+    name = models.CharField(max_length=50)
+
+    class Meta:
+        abstract = True
+
+    # Custom managers
+    manager1 = OnlyFred()
+    manager2 = OnlyBarney()
+    objects = models.Manager()
+
+class AbstractBase2(models.Model):
+    value = models.IntegerField()
+
+    class Meta:
+        abstract = True
+
+    # Custom manager
+    restricted = Value42()
+
+# No custom manager on this class to make sure the default case doesn't break.
+class AbstractBase3(models.Model):
+    comment = models.CharField(max_length=50)
+
+    class Meta:
+        abstract = True
+
+class Parent(models.Model):
+    name = models.CharField(max_length=50)
+
+    manager = OnlyFred()
+
+    def __unicode__(self):
+        return self.name
+
+# Managers from base classes are inherited and, if no manager is specified
+# *and* the parent has a manager specified, the first one (in the MRO) will
+# become the default.
+class Child1(AbstractBase1):
+    data = models.CharField(max_length=25)
+
+    def __unicode__(self):
+        return self.data
+
+class Child2(AbstractBase1, AbstractBase2):
+    data = models.CharField(max_length=25)
+
+    def __unicode__(self):
+        return self.data
+
+class Child3(AbstractBase1, AbstractBase3):
+    data = models.CharField(max_length=25)
+
+    def __unicode__(self):
+        return self.data
+
+class Child4(AbstractBase1):
+    data = models.CharField(max_length=25)
+
+    # Should be the default manager, although the parent managers are
+    # inherited.
+    default = models.Manager()
+
+    def __unicode__(self):
+        return self.data
+
+class Child5(AbstractBase3):
+    name = models.CharField(max_length=25)
+
+    default = OnlyFred()
+    objects = models.Manager()
+
+    def __unicode__(self):
+        return self.name
+
+# Will inherit managers from AbstractBase1, but not Child4.
+class Child6(Child4):
+    value = models.IntegerField()
+
+# Will not inherit default manager from parent.
+class Child7(Parent):
+    pass