F＃开发和单元测试？ [英] F# development and unit testing?

问题描述

我刚刚开始使用F＃，这是我的第一个函数式语言。我一直准C＃专用，并且非常享受F＃如何让我重新思考如何编写代码。我发现有一点让人迷惑，就是编写代码的过程发生了变化。我一直在C＃中使用TDD多年，并且非常感谢有单元测试来知道我在哪里。

I just got started with F#, which is my first functional language. I have been working quasi-exclusively with C#, and enjoy a lot how F# leads me to re-think how I write code. One aspect I find a bit disorienting is the change in the process of writing code. I have been using TDD for years in C# now, and really appreciate to have unit tests to know where I am at.

到目前为止，我使用F＃的过程一直是编写一些功能，用交互式控制台与他们一起玩，直到我合理地确定他们工作，并调整&结合。这对欧拉项目这样的小规模问题非常有效，但我无法想象如何构建大型项目。

So far, my process with F# has been to write some functions, play with them with the interactive console until I am "reasonably" sure they work, and tweak & combine. This works well on small-scale problems like the Euler Project, but I can't imagine building something large that way.

人们如何接近单元测试和构建测试套件的F＃程序？是否有相当于TDD？任何指针或想法都是值得赞赏的。

How do people approach unit testing and building a test suite for a F# program? Is there an equivalent to TDD? Any pointers or thoughts are appreciated.

推荐答案

测试驱动开发人员应该在F＃给出确定性可重复的结果可以完美地适用于单元测试。 F＃语言中还有一些功能可以帮助编写测试。以对象表达式为例。您可以非常轻松地为以接口类型为输入的函数编写假货。

Test-driven developers should feel right at home in functional languages like F#: small functions that give deterministically repeatable results lend themselves perfectly to unit tests. There are also capabilities in the F# language that facilitate writing tests. Take, for example, Object Expressions. You can very easily write fakes for functions that take as their input an interface type.

如果有的话，F＃是一流的面向对象语言，您可以使用您在C＃中使用TDD时使用的相同工具和技巧。还有一些测试工具是专门为F＃编写的：

If anything, F# is a first-class object-oriented language and you can use the same tools and tricks that you use when doing TDD in C#. There are also some testing tools written in or specifically for F#:

• NaturalSpec =http://www.codeplex.com/fscheck =noreferrer> FsCheck


• FsTest


• FsUnit

• NaturalSpec
• FsCheck
• FsTest
• FsUnit

Matthew Podwysocki写了一篇很棒的系列关于函数式语言中的单元测试。叔叔鲍勃还写了一篇引人深思的文章此处。

Matthew Podwysocki wrote a great series on unit testing in functional languages. Uncle Bob also wrote a thought provoking article here.

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