如何在Laravel5.4中使用ask()测试工匠命令

尝试使用ask()函数为laravel php artisan命令编写测试.我之前从未使用过嘲弄,但是当我尝试运行测试时,它会冻结,所以我猜,我做错了什么.

MyCommand.php:

public function handle()
    {
        $input['answer1'] = $this->ask('Ask question 1');
        $input['answer2'] = $this->ask('Ask question 2');
        $input['answer3'] = $this->ask('Ask question 3');


        //--- processing validation        
        $validator = Validator::make($input, [
            'answer1' => 'required',
            'answer2' => 'required',
            'answer3' => 'required',

        ]);

        if ($validator->fails()) {
            // processing error
            }
        } else {
            // saving to DB
        }
    }

我的单元测试:

    $command = m::mock('\App\Console\Commands\Questions');


            $command->shouldReceive('ask')              
                  ->andReturn('Answer 1')
                  ->shouldReceive('ask')
                  ->andReturn('Answer 2')
                  ->shouldReceive('ask')
                  ->andReturn('Answer 3')


            $this->artisan('myCommand:toRun');

$this->assertDatabaseHas('myTable', [
            'question1' => 'answer1'
        ]);

//