Find visual differences between web pages in different environments (developing, staging, production) and browsers.

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Viff runs on selenium sever. Don't worry, you can easily set up selenium server using wdm.

$ npm install wdm -g
$ wdm update --standalone // install selenium and webdrivers

Then install viff command line.

npm install -g viff

Checkout viff-examples repository for more examples, including:

1. Tiny CSS difference
2. Chart difference
3. Content difference
4. Partial difference
5. Event Handling
6. Responsive
7. Multiple browsers
8. Multiple Environments
9. Browserstack
10. Programmable
11. Using Viff Server (beta)

Start server

$ wdm start // open selenium webdriver server

You could run it using a xx.config.js file.

// build_prod.config.js
'use strict'

module.exports = {
  seleniumHost: 'http://localhost:4444/wd/hub',
  browsers: ['firefox'/*, 'chrome', 'safari', 'opera'*/],
  envHosts: {
    build: 'http://localhost:4000',
    prod: 'http://www.ishouldbeageek.me'
  },
  paths: [
    '/404.html',
    '/',
    '/page2',
    '/page3',
    '/page4',
    '/page5',
    '/strict-mode',
    ['/', function clickLink(browser) {
      // need to return a promise
      return browser.elementByPartialLinkText('viff').click();
    }],
    ['/', '#main-content'/*, function (browser) { } */],
    { 'this is a testcase description' : ['/', '#main-content', function(browser) {
      return browser.maximize();
    }]}
  ],
  maxInstance: 3
};

Then, you could run

viff ./build_prod.config.js

Use viff in your own project.

var Viff = require('viff');
var viff = new Viff('http://localhost:4444/wd/hub');

viff.takeScreenshot('firefox', 'http://localhost:3000', '/path1', function (bufferImg) {
  /* buffer of images */  
});

// partial of web pages
viff.takeScreenshot('firefox', 'http://localhost:3000', ['path1', '#css-selecor'], function (bufferPartialImg) {});

// responsive of web pages
function size(width) {
  return function (driver) {
    driver.setWindowSize(width, 600 /* any height*/);
  };
}

viff.takeScreenshot('firefox', 'http://localhost:3000', ['path', size(1024)], function (bufferImg) {});

// Q promise
viff.takeScreenshot('firefox', 'http://localhost:3000', ['path', size(1024)])
  .done(function (bufferImg) {
    /* generate image here */
  })
  .catch(function (err) {
    /* handle err here */
  })

// using browserstack
viff = new Viff('http://hub.browserstack.com/wd/hub');
viff.takeScreenshot({
  'browserName' : 'iPhone',
  'platform' : 'MAC',
  'device' : 'iPhone 5',
  'browserstack.user': /* your name */,
  'browserstack.key': /* your key */
}, 'http://www.google.com', 'path1', function (bufferImg) {});

repo for viff reporter is ViffReport

You could try viffserver and viff-client to do the viff testing with your functional testing.

Run the viff server first.

$ viffserver

And integrated viffclient.post method in your functional testing code. Check more in Viff Examples or Viff Client.

2015-01-12 [email protected] use node-canvas back for better performance. Ah~~~

2014-08-07 [email protected] no need to install coffee-script before hand.

2014-06-08 [email protected] could use multi viff instances to improve testing performance (maxInstance property).

2014-05-18 [email protected] finally replace canvas by phantomjs, so easy installation starts from now, even in Windows System.

2014-03-15 [email protected] could setup viff server and wait for screenshots from the place out of viff. Check out the viff client example.

2014-03-11 [email protected] use wd to replace selenium-webdriver, so that you could use beautiful Q Promised API in your code.

2014-02-26 [email protected] simplify console output DEMO.

2014-02-17 [email protected] make viff programmable.

2013-12-25 [email protected] refactor testcases and compare differences cross browsers !!! Merry Christmas !!!

2013-11-13 [email protected] optimise memory usage and only support file report format

2013-10-30 [email protected] add testcase running status in console.

2013-10-27 [email protected] won't stop testing if one of them fail.

2013-09-22 [email protected] could write testcase description.

2013-08-08 [email protected] add partial screenshot support. working perfectly in firefox, phantomjs.

2013-08-01 [email protected] add new report format file, which will generate images.

2013-07-24 [email protected] use resemble.js to replace imagemagick

2013-07-16 [email protected] support resizing images before finding diff

Copyright (c) 2013 - 2016 Wang Qiu ([email protected])

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