Laravel 中的模拟验证器与 Mockery 返回对非对象上的成员函数的调用

我正在尝试为我的 REST 控制器实现一些单元测试。在我使用验证器外观之前，一切正常。索引和显示测试工作正常。

我得到的错误是：

Fatal Error: Call to a member function setAttributeName() on a non-object in D:'....'controllers'AllergyController.

我的代码是：

//Unit test
class AllergyControllerTest extends TestCase
{
    public function setUp()
    {
        parent::setUp();
        $this->allergy = $this->mock('App'Modules'Patient'Repositories'IAllergyRepository');
    }
    public function mock($class)
    {
        $mock = Mockery::mock($class);
        $this->app->instance($class, $mock);
        return $mock;
    }
    public function tearDown()
    {
        parent::tearDown();
        Mockery::close();
    }
    public function testIndex()
    {
        $this->allergy->shouldReceive('all')->once();
        $this->call('GET', 'api/allergy');
        $this->assertResponseOk();
    }
    public function testShow()
    {
        $this->allergy->shouldReceive('find')->once()->andReturn(array());
        $this->call('GET', 'api/allergy/1');
        $this->assertResponseOk();
    }
    public function testStore()
    {
        $validator = Mockery::mock('stdClass');
        Validator::swap($validator);
        $input = array('name' => 'foo');
        $this->allergy->shouldReceive('create')->once();
        $validator->shouldReceive('make')->once();
        $validator->shouldReceive('setAttributeNames')->once();
        $this->call('POST', 'api/allergy', $input);
        $this->assertResponseOk();
    }
}

我的控制器：

class AllergyController extends 'App'Controllers'BaseController
{
    public function __construct(IAllergyRepository $allergy){
        $this->allergy = $allergy;
    }
    public function index()
    {
        ...
    }
    public function show($id)
    {
        ...
    }
    public function store()
    {
        //define validation rules
        $rules = array(
            'name' => Config::get('Patient::validation.allergy.add.name')
        );
        //execute validation rules
        $validator = Validator::make(Input::all(), $rules);
        $validator->setAttributeNames(Config::get('Patient::validation.allergy.messages'));
        if ($validator->fails()) {
            return Response::json(array('status' => false, 'data' => $validator->messages()));
        } else {
            $allergy = $this->allergy->create(Input::all());
            if ($allergy) {
                return Response::json(array('status' => true, 'data' => $allergy));
            } else {
                $messages = new 'Illuminate'Support'MessageBag;
                $messages->add('error', 'Create failed! Please contact the site administrator or try again!');
                return Response::json(array('status' => false, 'data' => $messages));
            }
        }
    }
}

我似乎无法弄清楚为什么它会抛出这个错误。当我使用普通的 api 调用调用控制器时，它工作正常。

任何帮助都非常感谢！