C＃中：你将如何单元测试的GetHashCode？ [英] C#: How would you unit test GetHashCode?

问题描述

测试等于方法是非常简单的（据我所知）。但是，如何在地球上测试该的GetHashCode 方法？

Testing the Equals method is pretty much straight forward (as far as I know). But how on earth do you test the GetHashCode method?

推荐答案

测试这两个不同的对象哪些相等具有相同的散列码（为各种值）。检查不相等的对象给予不同的散列码，变化的一个方面/属性在同一时间。而散列码没有的有无的有所不同，你会真的倒霉到挑选不同的值，它的发生的给予相同的散列码除非您已性质得到了一个错误。

Test that two distinct objects which are equal have the same hash code (for various values). Check that non-equal objects give different hash codes, varying one aspect/property at a time. While the hash codes don't have to be different, you'd be really unlucky to pick different values for properties which happen to give the same hash code unless you've got a bug.

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