function obtainAuthCodeGrantRedirectsToLogin(ApiTester $I)
 {
     $client = factory(App\Models\OAuthClient::class, 1)->create();
     $grant = \App\Models\OAuthGrant::find('authorization_code');
     $client->oauth_grants()->attach($grant);
     $scope = \App\Models\OAuthScope::find('user_read');
     $client->oauth_scopes()->attach($scope);
     $endpoint = factory(App\Models\OAuthClientEndpoint::class, 1)->make();
     $endpoint->oauth_client()->associate($client);
     $endpoint->save();
     $I->wantTo('Be redirected to login page when un authenticated user visits auth code page');
     $I->amOnPage('authorize?client_id=' . $client->id . '&redirect_uri=' . $endpoint->redirect_uri . '&response_type=code&scope=user_read');
     $I->seeInCurrentUrl('login');
 }