Test-Driven Development with Jest
summary
Explains doing tests before code using the red green refactor cycle, shows Jest + Enzyme examples: implements a bubble sort, adds descending-order and default-descending tests, swaps to lodash on refactor, and mounts vs shallow-renders React components; demonstrates snapshot workflow and pitfalls with snapshot testing (big diffs encourage mindless updates). Claims unit tests catch 60 to 70 percent of errors and pairs TDD with pair programming; examples compile and tests run.
AI-written summary · about
chapters (20)
- 0:00Introduction
- 0:46TDD philosophy
- 1:21Red cycle
- 1:58Uncle Bob
- 2:56Benefits of TDD
- 3:25Full Unit Test Coverage
- 4:04Key Misconceptions
- 4:41Test Coverage
- 5:55Extreme Programming
- 6:09Pair Programming
- 6:54React UI
- 8:56Enzyme
- 9:33Render
- 18:17TestJs
- 18:49Snapshot Testing
- 19:28Snapshot Testing Benefits
- 21:00Snapshot Test
- 22:35Snapshot Test Example
- 24:24Key Benefits
- 26:20Is TDD used outside pair programming
