Trojan War: SinonJS
summary
Presents using SinonJS together with Mocha and Chai to improve test isolation by replacing brittle stubs and handling async returns and exceptions, offering spies, stubs, mocks and fakes with readable matchers. Demonstrates SinonJS sandbox (auto-restores per test), the fake server for HTTP testing, per-call parameter matchers, and describes migrating a large existing test suite (thousands of tests) to this stack while noting documentation issues and migration tradeoffs.
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chapters (15)
- 0:00SinonJS intro
- 1:50Choosing SinonJS
- 5:03Test doubles in unit tests
- 8:38Proxy issues with SinonJS
- 12:23Dependency handling
- 17:03Sandboxes and isolation
- 19:49SinonJS drawbacks
- 23:31Stub, spy, mock basics
- 26:29Martin Fowler’s test doubles
- 31:30AAA pattern
- 33:21SinonJS vs others
- 37:08Why others failed
- 40:26Best practices for isolated tests
- 41:49Unit testing theory
- 43:14Q&A
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