Daok列出了Visual Studio 2008测试项目的所有优点。下面是NUnit的优点。

NUnit has a mocking framework. NUnit can be run outside of the IDE. This can be useful if you want to run tests on a non-Microsoft build server, like CruiseControl.NET. NUnit has more versions coming out than visual studio. You don't have to wait years for a new version. And you don't have to install a new version of the IDE to get new features. There are extensions being developed for NUnit, like row-tests, etc. Visual Studio tests take a long time to start up for some reason. This is better in Visual Studio 2008, but it is still too slow for my taste. Quickly running a test to see if you didn't break something can take too long. NUnit with something like Testdriven.Net to run tests from the IDE is actually much faster. Especially when running single tests. According to Kjetil Klaussen, this is caused by the Visual Studio testrunner. Running MSTest tests in TestDriven.Net makes MSTest performance comparable to NUnit.

我更喜欢使用MS的小测试框架，但现在我坚持使用NUnit。多发性硬化的问题通常是(对我来说)

必须维护的共享“测试”文件(无意义) 测试列表会与多个开发人员/ vcs产生冲突 糟糕的集成UI -令人困惑的设置，繁重的测试选择 没有好的外部流道

警告

如果我正在测试一个aspx站点，我肯定会使用MS的 如果我是独自开发，MS也可以 如果我的技能有限，不能配置NUnit:)

我发现编写我的测试并启动NUnitGUI或其他前端(testDriven的价格非常非常非常昂贵)要容易得多。使用命令行版本设置调试也非常简单。

随着。net 4.0中代码契约系统的发布和静态检查器的可用性，理论上你将需要编写更少的测试用例，而像Pex这样的工具将有助于识别这些用例。将这一点与前面的讨论联系起来，如果您需要更少地使用单元测试，因为您的契约会覆盖您的尾部，那么为什么不直接使用内置组件呢，因为这样可以少管理一个依赖项。这些天来，我只追求简单。: -)

参见:

微软Pex -自动化单元测试 使用Visual Studio 2010和c# 4.0与Pex生成单元测试

Visual Studio 2008内置单元测试框架的优点/变化:

The 2008 version now is available in professional editions (before it required expensive versions of Visual Studio, and this is just for developer unit testing) that left a lot of developers with the only choice of open/external testing frameworks. Built-in API supported by a single company. Use the same tools to to run and create tests (you may run them using the command line also MSTest). Simple design (granted without a mock framework, but this is a great starting point for many programmers). Long term support granted (I still remember what happened to NDoc, and I don't want to commit to a testing framework that might not be supported in five years, but I still consider NUnit a great framework). If using Team Foundation Server as your backend, you can create work items or bugs with the failed test data in a simple fashion.

首先我想纠正一个错误的说法:你可以使用命令行在Visual Studio之外运行MSTest。尽管一些CI工具，如TeamCity，对NUnit有更好的支持(可能会随着MSTest变得更流行而改变)。

在我目前的项目中，我们两者都使用，唯一的大区别是，我们发现MSTest总是作为32位运行，而NUnit运行为32位或64位测试，这只在你的代码使用32/64位依赖的本机代码时才重要。

与NUnit相比，我对Visual Studio单元测试的主要不满是Visual Studio测试创建倾向于为私有成员访问注入一堆生成的代码。

有些人可能想测试他们的私有方法，有些人可能不想。那是另一个话题了。

我担心的是，当我编写单元测试时，它们应该被严格控制，这样我才能确切地知道我在测试什么以及我如何测试它。如果有自动生成的代码，我就失去了一些所有权。