使用PHPUnit模拟PDO对象-MockingThePDOObjectusingPHPUnit

47  

$backupGlobals does not help you, because this error comes from elsewhere. PHPUnit 3.5.2 (possibly earlier versions as well) has the following code in PHPUnit/Framework/MockObject/Generator.php

$ backupGlobals对你没有帮助，因为这个错误来自其他地方。 PHPUnit 3.5.2（也可能是早期版本）在PHPUnit / Framework / MockObject / Generator.php中有以下代码

    if ($callOriginalConstructor &&
        !interface_exists($originalClassName, $callAutoload)) {
        if (count($arguments) == 0) {
            $mockObject = new $mock['mockClassName'];
        } else {
            $mockClass  = new ReflectionClass($mock['mockClassName']);
            $mockObject = $mockClass->newInstanceArgs($arguments);
        }
    } else {
        // Use a trick to create a new object of a class
        // without invoking its constructor.
        $mockObject = unserialize(
          sprintf(
            'O:%d:"%s":0:{}',
            strlen($mock['mockClassName']), $mock['mockClassName']
          )
        );
    }

This "trick" with unserialize is used when you ask getMock to not execute the original constructor and it will promptly fail with PDO.

当你要求getMock不执行原始构造函数时，会使用带有反序列化的“技巧”，并且它会立即失败并使用PDO。

So, how do work around it?

那么，如何解决它呢？

One option is to create a test helper like this

一种选择是创建这样的测试助手

class mockPDO extends PDO
{
    public function __construct ()
    {}

}

The goal here is to get rid of the original PDO constructor, which you do not need. Then, change your test code to this:

这里的目标是摆脱你不需要的原始PDO构造函数。然后，将您的测试代码更改为：

$pdoMock = $this->getMock('mockPDO', array('prepare'));

Creating mock like this will execute original constructor, but since it is now harmless thanks to mockPDO test helper, you can continue testing.

像这样创建模拟将执行原始构造函数，但由于mockPDO测试助手现在它是无害的，您可以继续测试。

2  

The best I can think of is to use runkit and redefine the two final methods as protected using runkit_function_redefine.

我能想到的最好的方法是使用runkit并使用runkit_function_redefine重新定义两个最终方法作为protected。

Dont for get to enable the runkit.internal_override setting in php.ini.

不要在php.ini中启用runkit.internal_override设置。

And as ever, as with eval, if runkit seems like the answer, the question is probably wrong :)

和eval一样，如果runkit看起来像答案，问题可能是错误的:)

1  

You are instantiating your test case in your test case?

您是否在测试用例中实例化了测试用例？

$classToTest = new MyTest($pdoMock);

Right now, you are essentially testing your test case. It should be more something like:

现在，您基本上是在测试您的测试用例。它应该更像是：

$classToTest = new My($pdoMock);