Utiliser un fichier .env.testing dans les tests phpunit

TestCase.php

<?php

class TestCase extends Illuminate\Foundation\Testing\TestCase {

	protected $baseUrl = 'http://localhost';

	/**
	 * Creates the application.
	 *
	 * @return \Illuminate\Foundation\Application
	 */
	public function createApplication()
	{
		if(file_exists(__DIR__.'/../.env.testing')) {
			$envs = file(__DIR__.'/../.env.testing');
			if($envs) {
				foreach($envs as $env) {
					$env = str_replace(array("\n","\r"), '', trim($env) );
					if($env) {
						putenv($env);
					}
				}
			}
		}

		$app = require __DIR__.'/../bootstrap/app.php';

		$app->make(Illuminate\Contracts\Console\Kernel::class)->bootstrap();

		return $app;
	}

}