测试驱动开发(TDD)对很多程序员来说，看起来很美好，实践起来却困难重重。写代码时思路常常被测试用例牵着走，很难做到小步前进，这时问题往往出在测试用例的选择上。本话题将结合Coding Kata的形式，带领大家分析TDD过程中如何让测试用例驱动出优秀的代码。

1. 解析测试驱动开发
张博超

2. TDD Explained

3. Jackson Zhang 张博超
Irdeto CSM, CSP, CSPO

4. Prime Factor

5. 1 -> []
2 -> [2]
3 -> [3]
4 -> [2, 2]
6 -> [2, 3]
8 -> [2, 2, 2]
9 -> [3, 3]

6. How to choose test case

7. 9
8 6
3 4
2
1

8. Strategy to choose
path?

9. Case -> Specific
Code -> Generic

10. n Factor
Factor is n
2 Factor n Factor
Factor is n Factor is 2
1 Factor 2 Factor
Factor is 2
[1, 2]
1

11. Prime Factor ->
n Factor, Factor is n

12. Roman Numeric

13. I -> 1
V -> 5
X -> 10
L -> 50
C -> 100
D -> 500
M -> 1000

14. TDD is NOT new

16. Thanks
zbcjackson@gmail.com
weibo.com/zbcjackson
iagile.me/blog