sinon.js stub usage

sinon_stub.js

'use strict';

var sinon  = require('sinon');
var assert = require('assert');

var testObject = {
  'testMethod': function () {

    return 'testtest';
  }
};

describe('sinon stub usage, our testMethod', function () {

  var stubTestObject;

  it('returns "testtest" normally', function () {

    assert.equal(testObject.testMethod(), 'testtest');
  });

  it('returns "hello" after stub usage', function () {

    stubTestObject = sinon.stub(testObject, 'testMethod', function() {
      return 'hello';
    });

    assert.equal(testObject.testMethod(), 'hello');
  });

  it('returns "testtest" after restoring original state', function () {

    stubTestObject.restore();
    assert.equal(testObject.testMethod(), 'testtest');
  });
});