mock-http-client

Create a mock http object for stubbing and simulating ajax requests in tests.

Install:

npm install mock-http-client --save-dev

Create mock http and pass it into your source code:

import mockHttp from 'mock-http-client';
const http = mockHttp();

(myService || myComponent || myRewiredModule || mySystemUnderTest).http = http;

// http exposes a fairly common api:
http({method : 'post', url : '/api/1', data : {}});
http.get('/api/1');
http.put('/api/1', {});
http.post('/api/1', {});
http.patch('/api/1', {});
http.delete('/api/1', {});

Create responses:

// create responses for specific queries
http.when('get', '/api/1').return({
  status : 200,
  data : {}
});
http.when('delete', '/api/1').reject(new Error());

// create responses for patterns
http.when(/\/api\/\d+/).call(config => {
  return {
    status : 204,
    data : config.data
  };
});

// expect requests and error if they are not met
http.expect('/api/3');
// run your code here
http.assert();

Docs:
https://jackmellis.gitbooks.io/vuenit/content/http/introduction.html