diff -r 5ff1fc726848 -r c6bca38c1cbf parts/django/tests/regressiontests/signals_regress/models.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/regressiontests/signals_regress/models.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,14 @@
+from django.db import models
+
+class Author(models.Model):
+    name = models.CharField(max_length=20)
+
+    def __unicode__(self):
+        return self.name
+
+class Book(models.Model):
+    name = models.CharField(max_length=20)
+    authors = models.ManyToManyField(Author)
+
+    def __unicode__(self):
+        return self.name