How to test pure javascript module with mocha.js?

@ryleigh 

To test a pure JavaScript module with mocha.js, you can follow these steps:

1. Install mocha.js and any necessary testing libraries:

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npm install mocha chai

1. Create a test file for your module, for example, myModule.test.js.
2. In your test file, require the necessary modules:

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const assert = require('chai').assert;
const myModule = require('./myModule');

1. Write your test cases using the Mocha describe and it functions:

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describe('MyModule', function() {
  it('should return the correct result', function() {
    assert.equal(myModule.myFunction(2, 3), 5);
  });
});

1. Run your tests with Mocha from the command line:

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npx mocha myModule.test.js

If any of the test cases fail, Mocha will provide you with detailed information about the failure, making it easier for you to debug and fix any issues with your module.