单元测试魔术方法 [英] Unit Testing Magic Methods

问题描述

在PHP中魔术方法的单元测试实现时，推荐使用哪些方法来调用这些方法?

When it comes to unit-testing implementations of magic methods in PHP, what is the recommended means of invoking those methods?

我看到三个可用选项:

• 显式/直接调用它们:

• Invoking them explicitly/directly:

$object->__get('someValue');

间接调用它们(使用旨在触发它们的任何操作):

Invoking them indirectly (using whatever action is intended to trigger them):

$object->someValue; \\ Where __get() is implemented.

使用这两种方法调用它们.

Invoking them using both methods.

是否有任何单元测试的资深人士可以解释哪个(如果有的话)将是显而易见的选择，为什么会这样?

Are there any unit testing veterans that could explain which (if any) would be the obvious choice, and why that might be?

(这可能是在主观/辩论领域附近跳舞的，但是我希望问一下在解决这个问题时我应该考虑一些公认的原则.)

推荐答案

您应该测试可观察的行为.因此，第二个($obj->property) 必须经过测试，没问题.

You should be testing observable behavior. So, the second one ($obj->property) must be tested, no question.

至于直接直接调用getter，更多的是判断.一旦您说了__get('someProperty')，在我看来，您几乎已经陷入僵局，这是一个神奇的属性.由于我一直尝试不更改测试，因此如果出于某种原因我希望它成为普通的非魔术属性，会使事情复杂化很多.从好的方面来说，您可以调用getter并以另一种方式获取该属性，并确保它们都具有完全相同的结果.

As for actually calling the getter directly, that's more of a judgement call. Once you have said __get('someProperty'), in my opinion you've pretty much set in stone that it is a magic property. Since I try to never change the tests, that complicates things quite a bit if, for some reason, I want that to be a plain old non-magic property. On the plus side, you can call the getter and get the property the other way as well and ensure they both have the exact same result.

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