Added tests for Credentials

Removed routes from credentials that aren't used along with controller actions

test/controllers/domains_controller_test.rb

@@ -6,7 +6,7 @@ class DomainsControllerTest < ActionDispatch::IntegrationTest
     @domain = domains(:one)
   end
 
-  test "not should get index because we are not logged in" do
+  test "not should get index because user not logged in" do
     get domains_url
     assert_redirected_to new_user_session_path
   end