spy a function from a required module

[bsr203]

Hi @andreypopp

I cloned this repo and worked fine the jasmin test through Karma. but, it failed with webtest

# starting
TAP version 13
ok 1 - Dependency : foo method works:
not ok 2 - Main : calls dependency's foo:
  Expected spy foo to have been called with [ 'bar' ] but it was never called.
  === STACK TRACE ===
    at ./src/client/__tests__/main-test.js:16
  === END STACK TRACE ===

below is the failed test. This is the experience with my tests too. I couldn't spy or stub any method on a required module. In my case it was action creator in a flux implementation. It would be great if you can give some pointers as it is a blocker.

'use strict';

var dependency = require('../ttt/dependency');

import {run} from '../ttt/main';

describe('Main', function() {
  beforeEach(function() {
    spyOn(dependency, 'foo');
  });

  it('calls dependency\'s foo:', function() {
    run();
    expect(dependency.foo).toHaveBeenCalledWith('bar');
  });
});

[bsr203]

closes as the issue is not with webtest. see speedskater/babel-plugin-rewire#19