Fixed #14749 -- added support for using Django's file object as context managers. Thanks to Florian Apolloner for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14671 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/test_utils/tests_25.py

@@ -0,0 +1,28 @@
+from __future__ import with_statement
+
+from django.test import TestCase
+
+from models import Person
+
+
+class AssertNumQueriesTests(TestCase):
+    def test_simple(self):
+        with self.assertNumQueries(0):
+            pass
+
+        with self.assertNumQueries(1):
+            Person.objects.count()
+
+        with self.assertNumQueries(2):
+            Person.objects.count()
+            Person.objects.count()
+
+    def test_failure(self):
+        with self.assertRaises(AssertionError) as exc_info:
+            with self.assertNumQueries(2):
+                Person.objects.count()
+        self.assertIn("1 queries executed, 2 expected", str(exc_info.exception))
+
+        with self.assertRaises(TypeError):
+            with self.assertNumQueries(4000):
+                raise TypeError