[Feature Request] Allow modifying of config values in test

[dellow]

Would be great if we could modify a config value with config helper in tests (or in setUp()):

// Update config.
config()->set('config_bool', true);
// Run test.
$this->browse(function($browser) {
  $browser
    ->visit('/test-endpoint')
    ->assertPresent('.element-visible-by-config_bool');
});

This doesn't seem to work no matter where I place the config()->set() command.

[staudenmeir]

Site and test run in separate processes, so this is a complex issue.

You could achieve it by temporarily altering the .env file.

[dellow]

Ok I understand. Will close the issue.

[tomvo]

For who stumbles on this, i've solved it by adding a middleware when running in debug + test mode which looks for a duskconfig get param.
Something along these lines:

public function handle($request, Closure $next)
    {
        $shouldHandle = false; 
        
        //Only handle the DuskRuntimeConfig when debug=TRUE and environment=testing
        if(config('app.debug') && app()->environment() == 'testing'){
            //Do an extra check for hostname and environment
            if(in_array($request->getHttpHost(), ['localhost:8000', '127.0.0.1:8000'])){
                $shouldHandle = true;
            }            
        }

        if($shouldHandle){
            if($request->has('duskconfig')){
                $configValues = json_decode($request->get('duskconfig'), true);

                if(sizeof($configValues) > 0){
                    foreach($configValues as $key => $value){
                        config([$key => $value]);
                    }
                }
            }
        }

        return $next($request);
    }