Ticket #19837: 19837-test.diff

tests/regressiontests/queries/models.py

@@ -439 +439 @@
     a = models.ForeignKey(FK1, null=True)
     b = models.ForeignKey(FK2, null=True)
     c = models.ForeignKey(FK3, null=True)
+
+class Identifier(models.Model):
+    name = models.TextField()
+
+    def __unicode__(self):
+        return self.name
+
+class Program(models.Model):
+    identifier = models.OneToOneField(Identifier)
+
+class Channel(models.Model):
+    programs = models.ManyToManyField(Program)
+    identifier = models.OneToOneField(Identifier)

tests/regressiontests/queries/tests.py

@@ -2612 +2612 @@
         qs = BaseA.objects.filter(Q(a__f1=F('c__f1')) | (Q(pk=1) & Q(pk=2)))
         self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 2)
         self.assertEqual(str(qs.query).count('INNER JOIN'), 0)
+
+from .models import Identifier,Program, Channel
+
+class ManyToManyExcludeTest(TestCase):
+    def test_exclude_many_to_many(self):
+        Identifier.objects.create(name='extra')
+        program = Program.objects.create(identifier=Identifier.objects.create(name='program'))
+        channel = Channel.objects.create(identifier=Identifier.objects.create(name='channel'))
+        channel.programs.add(program)
+
+        # channel contains 'program1', so all Identifiers except that one
+        # should be returned
+        self.assertQuerysetEqual(
+            Identifier.objects.exclude(program__channel=channel).order_by('name'),
+            ['<Identifier: channel>', '<Identifier: extra>']
+        )