test(Suor#348): add test case

tests/models.py

@@ -286,3 +286,12 @@ def _curried(*moreargs, **morekwargs):
         setattr(self, '_get_private_data', curry(sum, [1, 2, 3, 4]))
 
     name = models.CharField(max_length=255)
+
+
+class ChatBoxDesign(models.Model):
+    width = models.IntegerField()
+    height = models.IntegerField()
+
+class ChatBox(models.Model):
+    name = models.CharField(max_length=222)
+    design = models.OneToOneField(ChatBoxDesign, on_delete=models.SET_NULL, null=True)

tests/settings.py

@@ -103,6 +103,8 @@
     'tests.noncachedvideoproxy': None,
     'tests.noncachedmedia': None,
     'auth.*': {},
+    'tests.ChatBox': {"ops": "all", "timeout": 3600 },
+    'tests.ChatBoxDesign': {"ops": "all", "timeout": 3600}
 }
 
 if os.environ.get('CACHEOPS_PREFIX'):

tests/tests.py

@@ -1029,3 +1029,40 @@ def test_m2m_changed_call_invalidate(self, mock_invalidate_dict):
         brand = Brand.objects.using('slave').create()
         brand.labels.add(label)
         mock_invalidate_dict.assert_called_with(mock.ANY, mock.ANY, using='slave')
+
+
+class TestIssue348(BaseTestCase):
+    def test_case(self):
+        chatbox = ChatBox.objects.create(name="test")
+        design = ChatBoxDesign.objects.create(width=100, height=100)
+        chatbox.design = design
+        chatbox.save()
+
+        self.assertIsNotNone(chatbox)
+        self.assertIsNotNone(chatbox.design)
+
+        chatbox = ChatBox.objects.cache().get(pk=1)
+        self.assertIsNotNone(chatbox)
+        self.assertIsNotNone(chatbox.design)
+
+        d = ChatBoxDesign.objects.get(pk=1)
+        self.assertIsNotNone(d)
+        d.delete()
+
+        verify = ChatBoxDesign.objects.all().count()
+        self.assertEquals(verify, 0)
+
+        # c = ChatBox.objects.cache().get(pk=1)
+        # self.assertIsNone(c.design)
+
+        c = ChatBox.objects.get(pk=1)
+        self.assertIsNone(c.design)
+
+        # Walk around
+        # c = ChatBox.objects.get(pk=1)
+        # from django.core.exceptions import ObjectDoesNotExist
+        # try:
+        #     has_design = c.design is not None
+        # except ObjectDoesNotExist as e:
+        #     has_design = False
+        # self.assertFalse(has_design)