From 11c47a132f0261606b8324982fb703a9d2b3963f Mon Sep 17 00:00:00 2001
From: Alexander Schepanovski <suor.web@gmail.com>
Date: Sun, 3 Feb 2013 22:59:29 +0800
Subject: [PATCH] Added tests for multi-table inheritance #31

---
 tests/models.py |  8 ++++++++
 tests/tests.py  | 20 ++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/tests/models.py b/tests/models.py
index ac72ee0b..930226e2 100644
--- a/tests/models.py
+++ b/tests/models.py
@@ -39,3 +39,11 @@ class Video(models.Model):
 class VideoProxy(Video):
     class Meta:
         proxy = True
+
+
+# Multi-table inheritance
+class Media(models.Model):
+    name = models.CharField(max_length=128)
+
+class Movie(Media):
+    year = models.IntegerField()
diff --git a/tests/tests.py b/tests/tests.py
index 81c3b5de..ec8e14e3 100644
--- a/tests/tests.py
+++ b/tests/tests.py
@@ -109,3 +109,23 @@ def test_interchange(self):
 
         with self.assertNumQueries(0):
             list(VideoProxy.objects.cache())
+
+
+class MultitableInheritanceTests(BaseTestCase):
+    def test_sub_added(self):
+        media_count = Media.objects.cache().count()
+        Movie.objects.create(name="Matrix", year=1999)
+
+        with self.assertNumQueries(1):
+            self.assertEqual(Media.objects.cache().count(), media_count + 1)
+
+    def test_base_changed(self):
+        matrix = Movie.objects.create(name="Matrix", year=1999)
+        list(Movie.objects.cache())
+
+        media = Media.objects.get(pk=matrix.pk)
+        media.name = "Matrix (original)"
+        media.save()
+
+        with self.assertNumQueries(1):
+            list(Movie.objects.cache())