【호출 가능-가짜】 테스트 속도를 높이기 위해 호출 가능 기능을 위조하세요.

// Before, you might collect callables to assert later...
public function testEachLoopsOverAllDependencies(): void
{
    // arrange
    $received = [];
    $expected = factory(Dependency::class)->times(2)->create();
    $repo = $this->app[DependencyRepository::class];
    // act
    $repo->each(function (Dependency $dependency) use (&$received): void {
        $received[] = $dependency;
    });
    // assert
    $this->assertCount(2, $received);
    $this->assertTrue($expected[0]->is($received[0]));
    $this->assertTrue($expected[1]->is($received[1]));
}

public function testEachLoopsOverAllDependencies(): void
{
    // arrange
    $callable = new CallableFake();
    $expected = factory(Dependency::class)->times(2)->create();
    $repo = $this->app[DependencyRepository::class];
    // act
    $repo->each($callable);
    // assert
    $callable->assertTimesInvoked(2);
    $callable->assertCalled(function (Depedency $dependency) use ($expected): bool {
        return $dependency->is($expected[0]);
    });
    $callable->assertCalled(function (Dependency $dependency) use ($expected): bool {
        return $dependency->is($expected[1]);
    });
}