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mocha.js

Tutorial

Example from Docs


npm install --save-dev mocha



import assert from "assert"
// var assert = require('assert');

describe('Array', function () {
  describe('#indexOf()', function () {
    it('should return -1 when the value is not present', function () {
      assert.equal([1, 2, 3].indexOf(4), -1);
    });
  });
});