Testing guide

Running tests

Run tests with:

yarn test

Run tests in watch mode with:

yarn test:watch

Run single test in watch mode with:

yarn test:watch --testFilePattern=FILE_PATTERN --testNamePattern=NAME_PATTERN

or

yarn test:watch -F FILE_PATTERN -t NAME_PATTERN

Example:

yarn test:watch -F Menu -t "passes arbitrary props"

Debugging tests

1. Open Chrome DevTools and drag & drop the whole react/ repo directory there, then click allow

2. Go to console and run:

node --inspect-brk node_modules/.bin/jest --runInBand [PATTERN_FOR_TEST_FILENAME]

       e.g.:

node --inspect-brk node_modules/.bin/jest --runInBand ChatList*

3. Go to Chrome DevTools and click on the green button to open Dedicated DevTools for Node.js

4. Press Ctrl+P to navigate to your test files, add breakpoints and resume execution