PHPUnit 错误致命错误：调用未定义的方法 Mock_Game_073a8e20::method()

Question

我目前正在以某种方式观看使用 PHP Unit 的指南，当涉及到模拟时，我总是收到此错误。

游戏类

class Game {

    protected $title;   protected $imagePath;   protected $ratings;

    public function getAverageScore(){

        $ratings = $this->getRatings();         $numRatings = count($ratings);

        $total = 0;

        if($numRatings == 0){           return null;        }


        foreach($ratings as $rating){

            $total = $rating->getScore();

        }

        return $total / $numRatings;

    }

    public function isRecommended()
    {
        return $this->getAverageScore() >= 3;
    }

    public function getTitle(){         return $this->title;    }

    public function setTitle($value){       $this->title = $value;  }

    public function getImagePath(){         if($this->imagePath == null){           return '/images/placeholder.jpg';       }       return $this->imagePath;    }

    public function setImagePath($value){       return $this->imagePath = $value;   }

    public function getRatings(){       return $this->ratings;  }

    public function setRatings($value){         return $this->ratings = $value;     }

}

测试用例

public function testAverageScore_With6And8_Returns7(){

    $ratings1 = $this->getMock('Rating', ['getScore']);
    $ratings1->method('getScore')
             ->willReturn(6);

    $ratings2 = $this->getMock('Rating', ['getScore']);
    $ratings2->method('getScore')
             ->willReturn(8);

    $game = $this->getMock('Game', ['getRatings']);
    $game->method('getRatings')
         ->willReturn([$ratings1, $ratings2]);
    $this->assertEquals(7, $game->getAverageScore());

}

错误：

E:\xampp\htdocs\gamebook>phpunit src/Test/Unit/GameTest.php PHPUnit 3.7.21 by Sebastian Bergmann。

...致命错误：调用未定义的方法 Mock_Rating_5c2598e3::method() 在 E:\xampp\htdocs\gamebook\src\Test\Unit\GameTest.php 第 40 行

调用栈：0.0670 126024 1. {main}() E:\xampp\php\phpunit:0 0.1800 361592 2. PHPUnit_TextUI_Command::main() E:\xampp\php\phpunit:46 0.1800 365CommandUnit_run_UI 3. () E:\xampp\php\pear\PHPUnit\TextUI\Command.php:129 0.3070 1401944 4. PHPUnit_TextUI_TestRunner->doRun() E:\xampp\php\pear\PHPUnit\TextUI\Command.php:176 0.3200 161456 5. PHPUnit_Framework_TestSuite->run() E:\xampp\php\pear\PHPUnit\TextUI\TestRunner.php:349 0.3810 1873016 6. PHPUnit_Framework_TestSuite->runTest() E:\xampp\php\pear\PHPUnit\Framework\TestSuite .php:745 0.3810 1873016 7. PHPUnit_Framework_TestCase->run() E:\xampp\php\pear\PHPUnit\Framework\TestSuite.php:775 0.3810 1872984 8. PHPUnit_Framework_TestResult->run()\xampp\php\pear\PHPUnit\Framework\TestCase.php:776 0.3820 1873600 9. PHPUnit_Framework_TestCase->runBare() E:\xampp\php\pear\PHPUnit\Framework\TestResult.php:648 0.3830 1691040 PHPTestUnitC >runTest() E:\xampp\php\pear\PHPUnit\Framework\TestCase.php:831 0.3830 1904592 11. ReflectionMethod->invokeArgs() E:\xampp\php\pear\PHPUnit\Framework\TestCase.php:976 0.3830 1904704 12. GameTest->testAverageScore_With6And8_Returns7() E:\xampp\php\pear\PHPUnit\Framework\TestCase.php:976invokeArgs() E:\xampp\php\pear\PHPUnit\Framework\TestCase.php:976 0.3830 1904704 12. GameTest->testAverageScore_With6And8_Returns7() E:\xampp\php\pear\PHPUnit\Framework\TestCase.invokeArgs() E:\xampp\php\pear\PHPUnit\Framework\TestCase.php:976 0.3830 1904704 12. GameTest->testAverageScore_With6And8_Returns7() E:\xampp\php\pear\PHPUnit\Framework\TestCase.

Answer 1

从 PHPUnit 5.4 开始，函数 getMock 已被弃用：

PHPUnit\Framework\TestCase::getMock() 方法已被弃用。请改用 PHPUnit\Framework\TestCase::createMock() 或 PHPUnit\Framework\TestCase::getMockBuilder() 。

您的代码中不包含 Rating 类，但如果包含，您可以像这样模拟它：

$ratings1 = $this->createMock('Rating');
$ratings1->method('getScore')
    ->willReturn(6);

此外，在您的最后一个模拟语句中，您传入了两个参数，但函数：

public function getRatings(){       return $this->ratings;  }

没有两个参数，它需要是：

public function getRatings($rating1, $rating2) {      
    return ($rating1->getScore() + $rating2->getScore())/2;  
}

然后你不要模拟那个调用，你用模拟的 Rating 对象调用它：

$game = new Game();
$answer = $game->getRatings($ratings1, $ratings2);
$this->assertSame(7,$answer);

我认为你的意思是让 getRatings 接受一系列评级，但我把它留给你编码......