获取ErrorException：尝试在laravel控制器上运行phpunit测试时，数组转换为字符串。

Question

我正在尝试在我的一个控制器上运行phpunit测试。我正在使用lalavel框架工作提供的一个函数叫做action（）并且我一直得到一个1）ListTest :: testCreateList ErrorException：Array to string conversion。我已经被困在这几个小时，并且不知道为什么会发生这种情况。

1）ListTest :: testCreateList ErrorException：数组到字符串转换

ConsoleOutput

/Users/jacobshafi/Desktop/Code/api/vendor/laravel/framework/src/Illuminate/Support/helpers.php:686
/Users/jacobshafi/Desktop/Code/api/bootstrap/compiled.php:3976
/Users/jacobshafi/Desktop/Code/api/bootstrap/compiled.php:3966
/Users/jacobshafi/Desktop/Code/api/bootstrap/compiled.php:3959
/Users/jacobshafi/Desktop/Code/api/bootstrap/compiled.php:4043
/Users/jacobshafi/Desktop/Code/api/vendor/laravel/framework/src/Illuminate/Foundation/Testing/ApplicationTrait.php:90
/Users/jacobshafi/Desktop/Code/api/app/tests/ListControllerTest.php:58

ApplicationTrait.php（在控制器中调用的操作方法）

public function action($method, $action, $wildcards = array(), $parameters = array(), $files = array(), $server = array(), $content = null, $changeHistory = true)
    {
        $uri = $this->app['url']->action($action, $wildcards, true);

        return $this->call($method, $uri, $parameters, $files, $server, $content, $changeHistory);
    }

ListController.php

class ListController extends BaseController
{
    public function postCreate()
    {
       some code...
    }

ListControllerTest.php

class ListTest extends TestCase {
    public function testCreateList()
    {
        $response = $this->action(
            'POST',
            'App\Controllers\v2\ListController@postCreate',  
            [
                'body' => array(
                    "name" => "open,shared",
                    "users" => array(array("user_id" => $user_id)),
                    "visibility" => "2",
                    "joinability" => "2",
                    "adminship" => "1",
                    "color" => "#2bc069"
                ),
                'headers' => array('Auth' => getTestAuthSender())
            ]
        );
 }