BRAKKO

Brakko is a simple runner of BackstopJS for visual regression testing.

You can easly split, manage and run your scenarios

Installation

    npm install brakko --save

• Create folder casper_scripts with default file onReady.js and onBefore.js - See doc of BackstopJS

• Create folder scenarios with subfolder and js file for each scenarios - See file structure

Methods

init(conf[Object])

Initialize the runner.

Arguments: the conf object used in your scenario

conf[Object]

{
    testhost: "https://www.amazon.it/",
    refhost: "https://www.amazon.co.uk/",
    delay: 1000,
    misMatchThreshold: 10    
}

reference(options[Object], test[Boolean])

Reference task of backstopJS.

options[Object]

    {
        scenario: NameOfSubfolder[string/array],
        tags: [string/array],
        labels: [string/array]
    }

The second argument test is a bool flag if you want run test task after the reference task is finished.

test(options[Object])

Test task of backstopJS.

options[Object]

    {
        scenario: NameOfSubfolder[string/array],
        tags: [string/array],
        labels: [string/array]
    }

Files structure

Create in the root of your project a folder named scenarios and create subfolder for each group of scenario.

Example:

casper_sripts
│   onBefore.js
│   onReady.js
│
└───footer
│   │   onBefore.js
│   │   onReady.js
│
scenarios
│
└───header
│   │   headerAll.js
│   │   headerMenu.js
│   │   headerSearch.js
│   │   ...
│   
└───footer
    │   footerAll.js
    │   footerSocial.js
    │   ...

Basic Usage

index.js

const brakko = require('brakko');
 
brakko.init({
    testhost: "https://www.amazon.it/",
    refhost: "https://www.amazon.co.uk/"
});
 
brakko.reference({
    scenario: 'footer'
}, true);
 

scenarios/footer/footerAll.js

module.exports = 
    (conf) => {
        return [{
            "label": "FooterAll",
            "tags": ["common"],
            "referenceUrl": conf.refhost,
            "url": conf.testhost,
            "removeSelectors": [
                '#unrec-pageContent'
            ],
            "selectors": [
                ".navFooterCopyright"
            ],
            "misMatchThreshold" : 5,
            "onBeforeScript": "footer/onBefore.js",
            "onReadyScript": "footer/onReady.js"
        }]
    };

casper_scripts/footer/onReady.js

module.exports = function (casper, scenario, vp) {
 
    casper.waitForSelector('.navFooterCopyright', function() {
      this.scrollToBottom();
    });
 
  console.log('onReady.js has run for: ', vp.name);
};

casper_scripts/footer/onBefore.js

module.exports = function (casper, scenario, vp) {
  //This script runs before your app loads. Edit here to log-in, load cookies or set other states required for your test.
  console.log('onBefore.js has run for '+ vp.name + '.');
};

TODO

• add label to task cofig
• add the support for multiple scenarios
• add country to init config
• yeoman generator