Sample code for monkey patching

monkey-patching.js

const transformer = require('transformer');

class MockClient {
  constructor() { this._msg = null; }
  put(msg) { this._msg = msg; }
  getMsg() { return this._msg; }
}

describe('test-transformer', function(done) {
  it('putsData', function(data) {
    let t = new transformer('testCode');
    t._client = new MockClient();
    t.puts('I am testing transformer I think?!');
    assert.expects(m.getMsg(), 'I am testing transformer for sure!' + 'Hello from testCode');
    done();
  });
});

transformer-updated