The test suite can be run with the command npm run test. If you plan to work on tests, you can run npm run -- --watch which will re-run the tests every time a file is changed. You can use it in conjunction with npm run watch if you're working on the ink source files at the same time.

The tests are run against an ink story that is almost like a serie of unit tests. The inkfiles folder contains the ink story as well as the compiled version.

Actual test files can be found in the tests/specs folder and they are written using jest. You can generate a coverage report by running npm run -- --coverage, and you can forward other jest options in the same way.