[2.2.x] Cleaned up exception message checking in some tests.

Backport of 95b7699ffc from master.

tests/auth_tests/test_views.py

@@ -855,7 +855,7 @@ class LoginRedirectAuthenticatedUser(AuthViewsTestCase):
         self.login()
         msg = (
             "Redirection loop for authenticated user detected. Check that "
-            "your LOGIN_REDIRECT_URL doesn't point to a login page"
+            "your LOGIN_REDIRECT_URL doesn't point to a login page."
         )
         with self.settings(LOGIN_REDIRECT_URL=self.do_redirect_url):
             with self.assertRaisesMessage(ValueError, msg):

tests/file_uploads/tests.py

@@ -386,8 +386,8 @@ class FileUploadTests(TestCase):
             file.write(b'a' * (2 ** 21))
             file.seek(0)
 
-            # AttributeError: You cannot alter upload handlers after the upload has been processed.
+            msg = 'You cannot alter upload handlers after the upload has been processed.'
-            with self.assertRaises(AttributeError):
+            with self.assertRaisesMessage(AttributeError, msg):
                 self.client.post('/quota/broken/', {'f': file})
 
     def test_fileupload_getlist(self):

tests/many_to_many/tests.py

@@ -63,7 +63,8 @@ class ManyToManyTests(TestCase):
         )
 
         # Adding an object of the wrong type raises TypeError
-        with self.assertRaisesMessage(TypeError, "'Publication' instance expected, got <Article"):
+        msg = "'Publication' instance expected, got <Article: Django lets you create Web apps easily>"
+        with self.assertRaisesMessage(TypeError, msg):
             with transaction.atomic():
                 a6.publications.add(a5)
 

tests/test_client/tests.py

@@ -815,8 +815,9 @@ class ClientTest(TestCase):
 
     def test_response_raises_multi_arg_exception(self):
         """A request may raise an exception with more than one required arg."""
-        with self.assertRaises(TwoArgException):
+        with self.assertRaises(TwoArgException) as cm:
             self.client.get('/two_arg_exception/')
+        self.assertEqual(cm.exception.args, ('one', 'two'))
 
     def test_uploading_temp_file(self):
         with tempfile.TemporaryFile() as test_file:

tests/urlpatterns_reverse/tests.py

@@ -999,8 +999,11 @@ class RequestURLconfTests(SimpleTestCase):
         Test reversing an URL from the *default* URLconf from inside
         a response middleware.
         """
-        message = "Reverse for 'outer' not found."
+        msg = (
-        with self.assertRaisesMessage(NoReverseMatch, message):
+            "Reverse for 'outer' not found. 'outer' is not a valid view "
+            "function or pattern name."
+        )
+        with self.assertRaisesMessage(NoReverseMatch, msg):
             self.client.get('/second_test/')
 
     @override_settings(
@@ -1072,7 +1075,8 @@ class DefaultErrorHandlerTests(SimpleTestCase):
         response = self.client.get('/test/')
         self.assertEqual(response.status_code, 404)
 
-        with self.assertRaisesMessage(ValueError, "I don't think I'm getting good"):
+        msg = "I don't think I'm getting good value for this view"
+        with self.assertRaisesMessage(ValueError, msg):
             self.client.get('/bad_view/')
 
 

tests/utils_tests/test_autoreload.py

@@ -286,7 +286,7 @@ class TestRaiseLastException(SimpleTestCase):
             exc_info = sys.exc_info()
 
         with mock.patch('django.utils.autoreload._exception', exc_info):
-            with self.assertRaises(MyException, msg='Test Message'):
+            with self.assertRaisesMessage(MyException, 'Test Message'):
                 autoreload.raise_last_exception()