UnitTest一种与时间有关的方法 [英] UnitTest a method that is time-dependent

问题描述

您如何测试与时间相关的方法？

How would you test a method that is time-dependent?

一个简单的示例可能是：

A simple example could be:

public static int GetAge(DateTime birthdate)
{
    // ...
}

[TestMethod]
public void GetAgeTest()
{
    // This is only ok for year 2013 !
    Assert.AreEqual(GetAge(new DateTime(2000, 1, 1)), 13);
}

问题在于它仅在当年（2013年案件）。新年伊始，我必须重写所有与时间相关的测试...

The problem is that it will work only for the current year (2013 in this case). As soon as a new year begins, I have to rewrite all time-dependent tests...

对这种方法进行单元测试的最佳方法是什么？

What is the best approach to Unit Test such a method?

推荐答案

两个主要选项：

1. 创建隔离时间相关功能的服务，并将其接口注入需要它的类中。然后，您可以模拟该接口以获取测试所需的行为。

1. Create a service that isolates time-dependent functionality and inject its interface into classes that need it. Then you can mock this interface to get the behavior you need for testing.

使用绕行测试框架，例如摩尔（那里还有其他一些）可以重新路由静态方法调用，例如 DateTime.Now 。

Use a detouring test framework like Moles (there are a few others out there, as well) that can reroute static method calls like DateTime.Now.

这篇关于UnitTest一种与时间有关的方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！