fix: flex and task tests (GoogleCloudPlatform#1155)

Author: bshaffer

tasks/test/tasksTest.php

@@ -17,6 +17,7 @@
 
 namespace Google\Cloud\Samples\Tasks\Tests;
 
+use Google\Auth\CredentialsLoader;
 use Google\Cloud\TestUtils\TestTrait;
 use PHPUnit\Framework\TestCase;
 
@@ -52,11 +53,12 @@ public function testCreateHttpTask()
 
     public function testCreateHttpTaskWithToken()
     {
+        $jsonKey = CredentialsLoader::fromEnv();
         $output = $this->runSnippet('create_http_task_with_token', [
             self::$location,
             self::$queue,
             'https://example.com/taskhandler',
-            '[email protected]',
+            $jsonKey['client_email'],
             'Task Details',
         ]);
 

testing/composer.json

@@ -4,5 +4,8 @@
         "phpunit/phpunit": "^7",
         "bshaffer/phpunit-retry-annotations": "^0.1.0",
         "guzzlehttp/guzzle": "^6.3"
+    },
+    "require": {
+        "symfony/browser-kit": "^4.0"
     }
 }