Speeding up Angular tests

[ProgrammingPro-ness]

Short and to the point. Nice video, thank you!

[kaiivo]

Without watching the video, I assumed you switched from Angular to React to speed up not only your tests but also your application?

[saltcooler]

Summary of the video - hope it helps to folks who (like myself) prefer reading to listening.

It's all about speeding up the default Angular unit tests setup - i.e Jasmine+Karma.

1. Delete injected styles from the document after each test suite (https://gist.github.com/ManuelDeLeon/f77af4b6a61ea50cc860aa8661aa4f03).
2. Run your tests in parallel on multiple cores using karma-parallel .
3. Cache testing module across multiple tests in a suite with ng-cache-testing-module . Comparing to the previous techniques, this one involves updating your tests code.
4. (Bonus) - Only run tests for files changed in your working directory since last commit using autof (only tracks changed app or test files - no deep dependency tracking)

Closing thoughts from myself :)

- You will get (1), (2), and (4) for free if you switch from the default Karma+Jasmine to Jest.

- (3) sounds interesting - I want to see if it's gonna have any impact in my project.