bs-jest

bs-jest - BuckleScript bindings for Jest

Very very experimental (yep, that's one less "very" than before!) and WIP

Status

• Global: Fully implemented and tested, apart from require.*
• Expect: Mostly implemented. Functionality that makes sense only for JS interop have been moved to ExpectJS. Some functionality does not make sense in a typed language, or is not possible to implement sensibly in ML.
• Mock Functions: Experimental and unsafe implementation, very much in flux. The Jest bindings will most likely be relegated to the MockJs module as it's very quirky to use with native code. A separate native from-scratch implementation might suddenly appear as Mock.
• The Jest Object: Fake timers are fully implemented and tested. Mock functionality has been moved to JestJs. It's mostly implemented, but experimental and largely untested.
• [Snapshotting] Completely untested. Expect functions exist, but there's currently no way to implement custom snapshot serializers.

Usage

See the tests for examples. Put tests in a __tests__ directory and use the suffix *test.ml/*test.re. When compiled they will be put in a __tests__ directory under lib, with a *test.js suffix, ready to be picked up when you run jest. If you're not already familiar with Jest, see the Jest documentation.

Contribute

git clone https://github.com/BuckleTypes/bs-jest.git
cs bs-jest
npm install

Then build and run tests with npm test, start watchers for bsband jest with npm run watch:bsb and npm run watch:jest respectively. Install screen to be able to use npm run watch:screen to run both watchers in a single terminal window.