v4 Unit Tests - zlq4863947/pixi.js-cn GitHub Wiki
Tests are written in Mocha, while the tests support ES6 features, it's important to retain the Mocha scope when writing tests. Avoid the use of fat-arrows. For instance:
describe('ClassName', function() {
it('methodName1', () => { // incorrect
// cannot use "this" for Mocha API
});
it('methodName', function() { // correct
this.timeout(4000); // preserve Mocha scope
});
});