Read and practice: The Cycles of TDD

### Learning Objectives

- [ ] Explain the Cycles of TDD

### Link to the coursework

http://blog.cleancoder.com/uncle-bob/2014/12/17/TheCyclesOfTDD.html

### Why are we doing this?

It is essential that you continue to use your TDD skills throughout the course. It is only through continual practice that you're able to master all the steps in TDD. The best way to master TDD is by solving katas with this method in a strict time-bound fashion.

### Maximum time in hours

.5

### How to get help

General advice on asking for help can be found on the [curriculum pages](https://curriculum.codeyourfuture.io/guides/getting-help/asking-questions/).
You can always share your blockers in your class channel and get help from your colleagues.

### Submission & Review

There is no submission required for this task.

先阅读链接的 Cycles of TDD 课程文章，然后按照 issue 中的描述，使用 kata 练习 TDD 周期。完成的标准是能够解释 Cycles of TDD；无需提交成果，遇到的阻碍可以在班级频道或通过链接的帮助指南分享。

由索引模型根据 Issue 内容生成。