1 files changed, 25 insertions, 4 deletions
diff --git a/tests/regressiontests/many_to_one_regress/models.py b/tests/regressiontests/many_to_one_regress/models.py
index 6c067446b1..8ddec98da4 100644
--- a/tests/regressiontests/many_to_one_regress/models.py
+++ b/tests/regressiontests/many_to_one_regress/models.py
@@ -1,13 +1,34 @@
 from django.db import models
 
+# If ticket #1578 ever slips back in, these models will not be able to be
+# created (the field names being lower-cased versions of their opposite
+# classes is important here).
+
 class First(models.Model):
     second = models.IntegerField()
 
 class Second(models.Model):
     first = models.ForeignKey(First, related_name = 'the_first')
 
-# If ticket #1578 ever slips back in, these models will not be able to be
-# created (the field names being lower-cased versions of their opposite
-# classes is important here).
+# Protect against repetition of #1839, #2415 and #2536.
+class Third(models.Model):
+    name = models.CharField(maxlength=20)
+    third = models.ForeignKey('self', null=True, related_name='child_set')
+
+class Parent(models.Model):
+    name = models.CharField(maxlength=20)
+    bestchild = models.ForeignKey('Child', null=True, related_name='favored_by')
+
+class Child(models.Model):
+    name = models.CharField(maxlength=20)
+    parent = models.ForeignKey(Parent)
+
 
-__test__ = {'API_TESTS':""}
+__test__ = {'API_TESTS':"""
+>>> Third.AddManipulator().save(dict(id='3', name='An example', another=None)) 
+<Third: Third object>
+>>> parent = Parent(name = 'fred')
+>>> parent.save()
+>>> Child.AddManipulator().save(dict(name='bam-bam', parent=parent.id))
+<Child: Child object>
+"""}