Re-introduce test_invalid_email

Re-implements test removed by 49b9cba

Author: mreid-tt

spkrepo/tests/test_frontend.py

@@ -196,6 +196,16 @@ def test_post_generate_api_key_not_developer(self):
 
 
 class RegisterTestCase(BaseTestCase):
+    def test_invalid_email(self):
+        data = dict(
+            username="test",
+            email="test@localhost",
+            password="password",
+            password_confirm="password",
+        )
+        response = self.client.post(url_for_security("register"), data=data)
+        self.assertIn("Invalid email address", response.data.decode())
+
     def test_unique_user_username(self):
         data = dict(
             username="test",