Respect\Validation\Rules\FileTest::testShouldValidateObjects PHP Метод

    public function testShouldValidateObjects()
    {
        $rule = new File();
        $object = $this->createMock('SplFileInfo', ['isFile'], ['somefile.txt']);
        $object->expects($this->once())->method('isFile')->will($this->returnValue(true));
        $this->assertTrue($rule->validate($object));
    }