协同欺骗功能测试在一起运行时失败，在Laravel中单独运行时成功

我目前有两个功能测试:

用户登录测试

$I = new FunctionalTester($scenario);
$I->am('wedding guest');
$I->wantTo('Sign in to the website and see the home page');
$I->logIn('user@mysite.nl', 'secret');
$I->seeCurrentUrlEquals('');
$I->see('user page string');

Admin login test

$I = new FunctionalTester($scenario);
$I->am('The website admin');
$I->wantTo('Sign in to the website and see the admin page');
$I->login('admin@mysite.nl', 'mypass');
$I->seeCurrentUrlEquals('/admin');

登录方法的代码如下:

public function login($email, $password){
    $I = $this->getModule('Laravel4');
    $I->amOnPage('login');
    $I->fillField("email", $email);
    $I->fillField("password",  $password);
    $I->click("Log in!");
}

当我单独运行每个测试时，它们都成功了，但是当我运行整个功能套件时(只有这两个测试是套件的一部分)，我得到以下错误:

vendor/bin/codecept run functional
...
Functional Tests (2) ------------------------------------------------------------------------------------------------------------
Trying to Sign in to the website and see the admin page (SignInWebsiteAdminCept)                                           Ok
...
1) Failed to sign in to the website and see the home page in 
SignInUserCept (/var/www/tests/functional/SignInUserCept.php)
Couldn't login "user@mysite.nl","secret":
Symfony'Component'HttpKernel'Exception'NotFoundHttpException:
...
#1  /var/www/vendor/laravel/framework/src/Illuminate/Routing/Router.php:1049
#2  /var/www/vendor/laravel/framework/src/Illuminate/Routing/Router.php:1017
#3  /var/www/vendor/laravel/framework/src/Illuminate/Routing/Router.php:996
#4  /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Application.php:776
#5  /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Application.php:746
#6  /var/www/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Client.php:81
#7  /var/www/vendor/symfony/browser-kit/Symfony/Component/BrowserKit/Client.php:332
#8  /var/www/tests/_support/FunctionalHelper.php:15
#9  /var/www/tests/functional/FunctionalTester.php:369
#10 /var/www/tests/functional/SignInWeddingGuestCept.php:7

它似乎找不到路由，而它显然存在，因为我能够通过执行$ vendor/bin/codecept run functional SignInUserCept.php成功运行测试

这是我的错误还是codeception的错误?我试过启用过滤器，但没有成功。我似乎也无法将环境设置为local而不是testing。