Example of JS test "interpreting" a JSP (the JSP can be found here: https://gist.github.com/ndemengel/54df1425968d9e8d05d052e71b31e4d9)

editable-rating-stars-spec.js

const tu = require('../tu');
const expect = tu.expect;
const withDocument = tu.withDocument;

const ratingStarsJspAndScript = {
    jsp: 'include/editableRatingStars',
    hopModules: 'Hop/components/editable-rating-stars',
    attributes: {
        param: {path: 'someRadioInput'}
    }
};

describe('Editable Rating Stars', () => {
    it('should add "active" class to all ".star"s before the one that has been clicked',
        withDocument(ratingStarsJspAndScript, $ => {
            // when
            $('.star:eq(3) input').change();

            // then
            expect($('.star').get(0).className).to.match(/\bactive\b/);
            expect($('.star').get(1).className).to.match(/\bactive\b/);
            expect($('.star').get(2).className).to.match(/\bactive\b/);
            expect($('.star').get(3).className).to.match(/\bactive\b/);
            expect($('.star').get(4).className).to.not.match(/\bactive\b/);
        }));
  
    // more tests...
});