Fixed mistake in tests from commit 20399083. Refs #19816.

tests/many_to_many/tests.py

@@ -376,7 +376,7 @@ class ManyToManyTests(TestCase):
         # ManyRelatedObjectsDescriptor.__set__. Refs #19816.
         self.a1.publications = [self.p1, self.p2]
 
-        qs = self.a1.publications.filter(id=self.a1.id)
+        qs = self.a1.publications.filter(title='The Python Journal')
         self.a1.publications = qs
 
         self.assertEqual(1, self.a1.publications.count())
@@ -388,7 +388,7 @@ class ManyToManyTests(TestCase):
         # ReverseManyRelatedObjectsDescriptor.__set__. Refs #19816.
         self.p1.article_set = [self.a1, self.a2]
 
-        qs = self.p1.article_set.filter(id=self.p1.id)
+        qs = self.p1.article_set.filter(headline='Django lets you build Web apps easily')
         self.p1.article_set = qs
 
         self.assertEqual(1, self.p1.article_set.count())

tests/many_to_one_null/tests.py

@@ -92,7 +92,7 @@ class ManyToOneNullTests(TestCase):
         # ForeignRelatedObjectsDescriptor.__set__. Refs #19816.
         self.r2.article_set = [self.a2, self.a3]
 
-        qs = self.r2.article_set.filter(id=self.a2.id)
+        qs = self.r2.article_set.filter(headline="Second")
         self.r2.article_set = qs
 
         self.assertEqual(1, self.r2.article_set.count())