Allow custom environment variables (#451)

* Send custom environment variables to the web server e.g. different test_case

* rename env for consistency

Co-authored-by: Kévin Dunglas <[email protected]>

Author: ThomasTr

src/PantherTestCaseTrait.php

@@ -75,6 +75,7 @@ trait PantherTestCaseTrait
         'external_base_uri' => null,
         'readinessPath' => '',
         'browser' => PantherTestCase::CHROME,
+        'env' => [],
     ];
 
     public static function tearDownAfterClass(): void
@@ -130,6 +131,7 @@ public static function startWebServer(array $options = []): void
             'port' => (int) ($options['port'] ?? $_SERVER['PANTHER_WEB_SERVER_PORT'] ?? self::$defaultOptions['port']),
             'router' => $options['router'] ?? $_SERVER['PANTHER_WEB_SERVER_ROUTER'] ?? self::$defaultOptions['router'],
             'readinessPath' => $options['readinessPath'] ?? $_SERVER['PANTHER_READINESS_PATH'] ?? self::$defaultOptions['readinessPath'],
+            'env' => (array) ($options['env'] ?? self::$defaultOptions['env']),
         ];
 
         self::$webServerManager = new WebServerManager(...array_values($options));