-This repo contains a pre-commit git hook so indent will run before every
-commit. Run `npm run setup-hooks` to install it.
+## Testing
+
+You can run tests with `npm test`. The tests use `testing-library` and
+`jest`.
+
+Here's some short guidelines:
+ - Every component that receives props or changes state should be tested.
+ - Test expected outcomes, not implementation details.
+ - Avoid mocking unless it's an external call