Used assertRaisesMessage() to test Django's error messages.

1 files changed, 10 insertions, 2 deletions

diff --git a/tests/auth_tests/test_auth_backends.py b/tests/auth_tests/test_auth_backends.py
index ea9ddd426c..744f8ad817 100644
--- a/tests/auth_tests/test_auth_backends.py
+++ b/tests/auth_tests/test_auth_backends.py
@@ -445,7 +445,11 @@ class NoBackendsTest(TestCase):
         self.user = User.objects.create_user('test', 'test@example.com', 'test')
 
     def test_raises_exception(self):
-        with self.assertRaises(ImproperlyConfigured):
+        msg = (
+            'No authentication backends have been defined. '
+            'Does AUTHENTICATION_BACKENDS contain anything?'
+        )
+        with self.assertRaisesMessage(ImproperlyConfigured, msg):
             self.user.has_perm(('perm', TestObj()))
 
 
@@ -626,7 +630,11 @@ class ImproperlyConfiguredUserModelTest(TestCase):
         request = HttpRequest()
         request.session = self.client.session
 
-        with self.assertRaises(ImproperlyConfigured):
+        msg = (
+            "AUTH_USER_MODEL refers to model 'thismodel.doesntexist' "
+            "that has not been installed"
+        )
+        with self.assertRaisesMessage(ImproperlyConfigured, msg):
             get_user(request)