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phpunit的参数克隆enableArgumentCloning

发布时间：2021-09-23 22:30:00编辑：雪饮阅读（）

上篇不是了解了identicalTo用于断言一个方法被调用时候所传入的参数吗？

我们上篇中用的是一个对象，那么接下来我们用一个普通的值试试

SubjectTest.php：

<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class SubjectTest extends TestCase
{
    public function testIdenticalObjectPassed(): void
    {

        $mock = $this->getMockBuilder(stdClass::class)
            ->setMethods(['foo'])
            ->getMock();

        $mock->expects($this->once())
            ->method('foo')
            ->with($this->identicalTo(1));

        $mock->foo(1);
    }
}

运行结果：

C:\Users\Administrator\PhpstormProjects\untitled\organizing>D:\phpstudy_pro\Extensions\php\php7.3.4nts\php.exe D:\phpstudy_pro\Extensions\php\php7.3.4nts\phpunit-9.5.8.phar C:\Users\Administrator\PhpstormProjects\untitled\organizing\tests\SubjectTest.php

PHPUnit 9.5.8 by Sebastian Bergmann and contributors.

. 1 / 1 (100%)

Time: 00:00.005, Memory: 20.00 MB

OK (1 test, 1 assertion)

可见这样也是可以成功的。

那么上篇中对于对象来说，我们知道对象比较的是堆的引用地址，而这里普通的值则是直接比较值的。

那么这里其实还有一个连贯操作函数enableArgumentCloning是开启参数拷贝的，参数拷贝开启后则对象就不再是以引用形式传递了，而是拷贝的副本了。那么我们知道对象比较的是地址，拷贝一个新的对象，地址肯定不同。

所以SubjectTest.php修改如：

<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class SubjectTest extends TestCase
{
    public function testIdenticalObjectPassed(): void
    {
        $expectedObject = new stdClass;
        $mock = $this->getMockBuilder(stdClass::class)
            ->setMethods(['foo'])
            ->enableArgumentCloning()
            ->getMock();

       $mock->expects($this->once())
            ->method('foo')
            ->with($this->identicalTo($expectedObject));

        $mock->foo($expectedObject);

        // 现在仿件会克隆参数，因此 identicalTo 约束会失败。
    }
}

这样断言肯定就是失败的：

PHPUnit 9.5.8 by Sebastian Bergmann and contributors.

F 1 / 1 (100%)

Time: 00:00.005, Memory: 20.00 MB

There was 1 failure:

1) SubjectTest::testIdenticalObjectPassed

Warning: include(PHPUnit\Composer\Autoload\ClassLoader.php): failed to open stream: No such file or directory in C:\Users\Administrator\PhpstormProjects\untitled\organizing\src\autoload.php on line 3

Call Stack:

0.0148 1571792 1. {main}() D:\phpstudy_pro\Extensions\php\php7.3.4nts\phpunit-9.5.8.phar:0

0.1357 18893800 2. PHPUnit\TextUI\Command::main(???) D:\phpstudy_pro\Extensions\php\php7.3.4nts\phpunit-9.5.8.phar:2249

0.1357 18893912 3. PHPUnit\TextUI\Command->run(array(2), true) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/TextUI/Command.php:93

0.1406 19070008 4. PHPUnit\TextUI\TestRunner->run(class PHPUnit\Framework\TestSuite, array(15), array(0), true) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/TextUI/Command.php:124

0.1702 19145848 5. PHPUnit\TextUI\DefaultResultPrinter->printResult(class PHPUnit\Framework\TestResult) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/TextUI/TestRunner.php:496

0.1704 19145872 6. PHPUnit\TextUI\DefaultResultPrinter->printFailures(class PHPUnit\Framework\TestResult) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/TextUI/DefaultResultPrinter.php:154

0.1704 19145872 7. PHPUnit\TextUI\DefaultResultPrinter->printDefects(array(1), string(7)) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/TextUI/DefaultResultPrinter.php:299

0.1708 19145872 8. PHPUnit\TextUI\DefaultResultPrinter->printDefect(class PHPUnit\Framework\TestFailure, long) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/TextUI/DefaultResultPrinter.php:272

0.1713 19145872 9. PHPUnit\TextUI\DefaultResultPrinter->printDefectTrace(class PHPUnit\Framework\TestFailure) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/TextUI/DefaultResultPrinter.php:279

0.1713 19145872 10. PHPUnit\Framework\ExpectationFailedException->__toString() phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/TextUI/DefaultResultPrinter.php:288

0.1713 19146128 11. PHPUnit\Util\Filter::getFilteredStacktrace(class PHPUnit\Framework\ExpectationFailedException) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/Framework/Exception/Exception.php:58

0.1713 19147264 12. PHPUnit\Util\Filter::shouldPrintFrame(array(2), string(25), class PHPUnit\Util\ExcludeList) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/Util/Filter.php:57

0.1713 19147408 13. PHPUnit\Util\Filter::fileIsExcluded(string(109), class PHPUnit\Util\ExcludeList) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/Util/Filter.php:76

0.1713 19147408 14. PHPUnit\Util\ExcludeList->isExcluded(string(109)) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/Util/Filter.php:80

0.1713 19147408 15. PHPUnit\Util\ExcludeList->initialize() phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/Util/ExcludeList.php:166

0.1713 19147408 16. class_exists(string(37)) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/Util/ExcludeList.php:182

0.1714 19147472 17. spl_autoload_call(string(37)) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/Util/ExcludeList.php:182

0.1714 19147536 18. autoload(string(37)) phar://D:/phpstudy_pro/Extensions/php/php7.3.4nts/phpunit-9.5.8.phar/phpunit/Util/ExcludeList.php:182

Warning: include(): Failed opening 'PHPUnit\Composer\Autoload\ClassLoader.php' for inclusion (include_path='.;C:\php\pear') in C:\Users\Administrator\PhpstormProjects\untitled\organizing\src\autoload.php on line 3