问题模拟Laravel可引导模型特性

Question

我正在使用可引导的模型trait为使用我的trait的模型注册某些事件。然而，我在尝试模拟使用该特性的模型时遇到了一个问题。具体来说，当模型的Mockery版本被实例化时，它的启动代码同意它应该有一个bootMyTrait方法，但当它试图调用它时却找不到它

下面的示例存储库，其中包含要复制的命令。

举个例子，这里有一个特点：

namespace App;
trait MyTrait
{
    public static function bootMyTrait()
    {
        print("Booting MyTraitn");
    }
}

还有一个使用它的模型：

namespace App;
use IlluminateDatabaseEloquentModel;
class MyModel extends Model
{
    use MyTrait;
}

定期实例化模型效果良好。这显示了所需的输出：

$model = new MyModel();

然而，试图嘲笑这种模式并不奏效。此：

use IlluminateFoundationTestingWithoutMiddleware;
use IlluminateFoundationTestingDatabaseMigrations;
use IlluminateFoundationTestingDatabaseTransactions;

    class ExampleTest extends TestCase
    {
        /**
         * A basic functional test example.
         *
         * @return void
         */
        public function testTraitBooting()
        {
            $model = $this->getMock('AppMyModel');
        }
    }

Fails. Adding some debugging to Eloquent:

    /**
     * Boot all of the bootable traits on the model.
     *
     * @return void
     */
    protected static function bootTraits()
    {
        $class = static::class;
        foreach (class_uses_recursive($class) as $trait) {
            print("nTesting that class: $class has method: " . $method = 'boot'.class_basename($trait) . " because of Trait: $traitn");
            if (method_exists($class, $method = 'boot'.class_basename($trait))) {
                print("Class: $class has method: $method n");
                try {
                    forward_static_call([$class, $method]);
                } catch (PHPUnit_Framework_MockObject_BadMethodCallException $e) {
                    print("Class: $class failed calling $methodn");
                    throw $e;
                }
            }
        }
    }

导致我们失败：

PHPUnit 5.1.0 by Sebastian Bergmann and contributors.
E                                                                   1 / 1 (100%)
Testing that class: Mock_MyModel_9ee820db has method: bootMyTrait because of Trait: AppMyTrait
Class: Mock_MyModel_9ee820db has method: bootMyTrait
Class: Mock_MyModel_9ee820db failed calling bootMyTrait

Time: 129 ms, Memory: 18.00Mb
There was 1 error:
1) ExampleTest::testTraitBooting
PHPUnit_Framework_MockObject_BadMethodCallException:
mock-bootable-laravel-model-trait/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:326
mock-bootable-laravel-model-trait/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:309
mock-bootable-laravel-model-trait/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:296
mock-bootable-laravel-model-trait/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:277
mock-bootable-laravel-model-trait/tests/ExampleTest.php:16

我还尝试过用几种不同的方式创建mock。以DatabaseSoftDeletingTraitTest为例：

use IlluminateFoundationTestingWithoutMiddleware;
use IlluminateFoundationTestingDatabaseMigrations;
use IlluminateFoundationTestingDatabaseTransactions;
use Mockery as m;
class ExampleTest extends TestCase
{
    /**
     * A basic functional test example.
     *
     * @return void
     */
    public function testTraitBooting()
    {
        $mock = m::mock('AppMyModel');
        $mock->shouldReceive('bootMyTrait')->once();
    }
}

但在这里，bootMyTrait从未被称为：

PHPUnit 5.1.0 by Sebastian Bergmann and contributors.
E                                                                   1 / 1 (100%)
Time: 149 ms, Memory: 19.25Mb
There was 1 error:
1) ExampleTest::testTraitBooting
MockeryExceptionInvalidCountException: Method bootMyTrait() from Mockery_0_App_MyModel should be called
 exactly 1 times but called 0 times.
mock-bootable-laravel-model-trait/vendor/mockery/mockery/library/Mockery/CountValidator/Exact.php:37
mock-bootable-laravel-model-trait/vendor/mockery/mockery/library/Mockery/Expectation.php:271
mock-bootable-laravel-model-trait/vendor/mockery/mockery/library/Mockery/ExpectationDirector.php:120
mock-bootable-laravel-model-trait/vendor/mockery/mockery/library/Mockery/Container.php:297
mock-bootable-laravel-model-trait/vendor/mockery/mockery/library/Mockery/Container.php:282
mock-bootable-laravel-model-trait/vendor/mockery/mockery/library/Mockery.php:142
mock-bootable-laravel-model-trait/vendor/laravel/framework/src/Illuminate/Foundation/Testing/TestCase.php:122

因此，我可以将在引导方法中执行的代码移动到ServiceProvider，但随后我需要注册使用该特性的每个Model。这感觉很脏，使用引导方法似乎很合适。所以我认为我要么遇到了一个错误，要么是错误地使用了模型来嘲笑这个特性。我已经看了getMockForTrait，但我还需要一个模拟实例来扩展Eloquent（一些特性的方法称为雄辩方法）

如果有人看到我错过的东西（或者如果我完全错了方向），非常感谢

Answer 1

经过一些测试，我相信这样的方法足以测试它：

$mock = m::mock('AppMyModel')->makePartial();
$mock->shouldReceive('bootMyTrait')->once();
$mock->__construct();

说明：

1. $mock = m::mock('AppMyModel')->makePartial();

   我们创建mock，但我们将其作为部分，因为我们希望使用默认的类构造函数和其他方法。使其部分化意味着我们不覆盖的所有方法都将从原始AppMyModel类中使用

2. $mock->shouldReceive('bootMyTrait')->once();

   这应该是显而易见的——我们想验证bootMyTrait方法是否正好运行1次

3. $mock->__construct();

   通过这种方式，我们可以运行默认的类构造函数。在创建mock时，似乎没有使用构造函数，所以我们不能用其他方式测试它。如果我们想确保原始类构造函数被启动，我们需要手动启动对象构造函数方法。