November 2002
Intermediate to advanced
240 pages
5h 9m
English
Content preview from Test Driven Development: By Example
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Chapter 2
Degenerate Objects
The general TDD cycle goes as follows.
Write a test. Think about how you would like the operation in your mind to appear in your code. You are writing a story. Invent the interface you wish you had. Include all of the elements in the story that you imagine will be necessary to calculate the right answers.
Make it run. Quickly getting that bar to go to green dominates everything else. If a clean, simple solution is obvious, then type it in. If the clean, simple solution is obvious but it will take you a minute, then make a note of it and get back to the main problem, which is getting the bar green in seconds. This shift in aesthetics is hard for some experienced software engineers. They only know how to follow the ...