old_contents: var chai = require('chai');
  var expect = require('chai').expect;
  var Mugshot = require('mugshot');
  var chaiMugshot = require('../index.js');
  var wdioAdapter = Mugshot.adapters.WebdriverIO;
  var wdio = require('webdriverio');
  var fs = require('fs');
  var path = require('path');
  
  var name = 'great';
  
  function cleanUp() {
    var ext = '.png';
    var dir  = path.join(__dirname, '../visual-tests');
  
    fs.unlink(path.join(dir, name + ext), function() {});
    fs.unlink(path.join(dir, name + '.new' + ext), function() {});
    fs.unlink(path.join(dir, name + '.diff' + ext), function() {});
  
    fs.rmdirSync(dir);
  }
  
  describe('Chai-Mugshot Plugin', function() {
    this.timeout(0);
  
    var url = 'file:///Users/florentin-simion/Desktop/chai-mugshot/test/test.htm',
        noSelector = {
          name: name
        },
        withSelector  = {
          name: name,
          selector: '#rectangle'
        },
        wdioInstance;
  
    before(function() {
      var options = {
        desiredCapabilities: {
          browserName: 'firefox'
        }
      };
  
      return wdioInstance = wdio.remote(options).init().url(url)
        .then(function() {
          var browser = new wdioAdapter(this);
          var mugshot = new Mugshot(browser);
  
          chai.use(chaiMugshot(mugshot));
        });
    });
  
    it('should be identical if there is no previous baseline', function() {
      return expect(withSelector).to.be.identical;
    });
  
    it('should be identical if there are no differences', function() {
      return expect(withSelector).to.be.identical;
    });
  
    it('should not be identical if there are differences', function() {
      return expect(noSelector).to.not.be.identical;
    });
  
    after(function() {
      cleanUp();
      return wdioInstance.end();
    });
  });
  
new_contents: var chai = require('chai');
  var expect = require('chai').expect;
  var Mugshot = require('mugshot');
  var chaiMugshot = require('../index.js');
  var wdioAdapter = Mugshot.adapters.WebdriverIO;
  var wdio = require('webdriverio');
  var fs = require('fs');
  var path = require('path');
  
  var name = 'great';
  
  function cleanUp() {
    var ext = '.png';
    var dir  = path.join(__dirname, '../visual-tests');
  
    fs.unlink(path.join(dir, name + ext), function() {});
    fs.unlink(path.join(dir, name + '.new' + ext), function() {});
    fs.unlink(path.join(dir, name + '.diff' + ext), function() {});
  
    fs.rmdirSync(dir);
  }
  
  describe('Chai-Mugshot Plugin', function() {
    this.timeout(0);
  
    var url = 'file://' + path.join(__dirname, 'test.htm'),
        noSelector = {
          name: name
        },
        withSelector  = {
          name: name,
          selector: '#rectangle'
        },
        wdioInstance;
  
    before(function() {
      var options = {
        desiredCapabilities: {
          browserName: 'firefox'
        }
      };
  
      return wdioInstance = wdio.remote(options).init().url(url)
        .then(function() {
          var browser = new wdioAdapter(this);
          var mugshot = new Mugshot(browser);
  
          chai.use(chaiMugshot(mugshot));
        });
    });
  
    it('should be identical if there is no previous baseline', function() {
      return expect(withSelector).to.be.identical;
    });
  
    it('should be identical if there are no differences', function() {
      return expect(withSelector).to.be.identical;
    });
  
    it('should not be identical if there are differences', function() {
      return expect(noSelector).to.not.be.identical;
    });
  
    after(function() {
      cleanUp();
      return wdioInstance.end();
    });
  });
  
subject: fix path to the html test file