Laravel Dusk – Class config does not exist

recently upgraded a 5.3 project to 5.4 and all seemed good.

Today I started to implement Dusk however had hit an issue when running the example test

☁  footy-finance [5.4] ⚡ php artisan dusk
PHPUnit 6.0.0 by Sebastian Bergmann and contributors.

E                                                                   1 / 1 (100%)

Time: 162 ms, Memory: 6.00MB

There was 1 error:

1) TestsBrowserExampleTest::testBasicExample
ReflectionException: Class config does not exist

/Users/owen/Sites/footy-finance/vendor/laravel/framework/src/Illuminate/Container/Container.php:681
/Users/owen/Sites/footy-finance/vendor/laravel/framework/src/Illuminate/Container/Container.php:565
/Users/owen/Sites/footy-finance/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php:105
/Users/owen/Sites/footy-finance/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php:263
/Users/owen/Sites/footy-finance/vendor/laravel/dusk/src/TestCase.php:203
/Users/owen/Sites/footy-finance/vendor/laravel/dusk/src/TestCase.php:40

I’ve had a look at line 40 of TestCase.php and its

public function baseUrl()
{
    return config('app.url');
}

So it does look like something to do with the global config helper anybody have any ideas?

I’m running

• PHP 7.0.14
• Laravel/Framework 5.4.8
• Laravel/Dusk 1.0.5

The full composer.lock can be seen https://gist.github.com/OwenMelbz/c05172b33f6eb4483e37a56469b53722

Fingers crossed you guys have some ideas!

Cheers 🙂

Answer

For anybody else who has had this issue.

I had prefer stable set in the composer file, which installed PHPUnit 6.

This was “made stable today” – thus it installed during a composer update.

Downgrading to PHPUnit 5 fixes the issue – so was bad timing starting it today.