How to use divergedWorker method in backstopjs

Best JavaScript code snippet using backstopjs

ImageScrubber.js

Source:ImageScrubber.js

1import React from 'react';2import styled from 'styled-components';3import TwentyTwenty from 'backstop-twentytwenty';4import { colors, fonts, shadows } from '../../styles';5const ScrubberViewBtn = styled.button`6  margin: 1em;7  padding: 10px 16px;8  height: 32px;9  background-color: ${props =>10    props.selected ? colors.secondaryText : colors.lightGray};11  color: ${props => (props.selected ? colors.lightGray : colors.secondaryText)};12  border-radius: 3px;13  text-transform: uppercase;14  font-family: ${fonts.latoRegular};15  text-align: center;16  font-size: 12px;17  border: none;18  box-shadow: ${props => (props.selected ? 'none' : shadows.shadow01)};19  transition: all 100ms ease-in-out;20  &:focus {21    outline: none;22  }23  &:hover {24    cursor: pointer;25    box-shadow: ${props => (!props.selected ? shadows.shadow02 : '')};26  }27  &.loadingDiverged {28    animation: blink normal 1200ms infinite ease-in-out;29    background-color: green;30  }31  @keyframes blink {32    0% {33      opacity: 1;34    }35    50% {36      opacity: 0.75;37    }38    100% {39      opacity: 1;40    }41  }42`;43const Wrapper = styled.div`44  cursor: ew-resize;45  padding-bottom: 20px;46  overflow: hidden;47  .testImage {48    opacity: 1;49  }50  .testImage,51  .refImage {52    max-width: 100%;53  }54`;55const WrapTitle = styled.div`56  display: flex;57  justify-content: center;58  padding-top: 10px;59  padding-bottom: 10px;60  position: sticky;61  top: 0;62  z-index: 5;63  background: white;64  border-bottom: 1px solid #e4e4e4;65`;66const SliderBar = styled.div`67  height: 100%;68  width: 5px;69  background: ${colors.red};70  transform: translate(-2.5px, 0);71`;72export default class ImageScrubber extends React.Component {73  constructor (props) {74    super(props);75    this.state = {76      isRefImageMissing: false,77      isLoading: false78    };79    this.handleRefImageLoadingError = this.handleRefImageLoadingError.bind(this);80    this.loadingDiverge = this.loadingDiverge.bind(this);81  }82  handleRefImageLoadingError () {83    this.setState({84      isRefImageMissing: true85    });86  }87  loadingDiverge (torf) {88    this.setState({89      isLoading: !!torf90    });91  }92  render () {93    const {94      scrubberModalMode,95      testImageType,96      position,97      refImage,98      testImage,99      diffImage,100      divergedImage,101      showScrubberTestImage,102      showScrubberRefImage,103      showScrubberDiffImage,104      showScrubberDivergedImage,105      showScrubber106    } = this.props;107    const scrubberTestImageSlug = this.props[testImageType];108    const hasDiff = diffImage && diffImage.length > 0;109    // only show the diverged option if the report comes from web server110    function showDivergedOption () {111      return /remote/.test(location.search);112    }113    // TODO: halp. i don't haz context.114    const that = this;115    function divergedWorker () {116      if (that.state.isLoading) {117        console.error('Diverged process is already running. Please hang on.');118        return;119      }120      if (divergedImage) {121        showScrubberDivergedImage(divergedImage);122        return;123      }124      showScrubberDivergedImage('');125      that.loadingDiverge(true);126      const refImg = document.images.isolatedRefImage;127      const testImg = document.images.isolatedTestImage;128      const h = refImg.height;129      const w = refImg.width;130      const worker = new Worker('divergedWorker.js');131      worker.addEventListener(132        'message',133        function (result) {134          const divergedImgData = result.data;135          let clampedImgData = getEmptyImgData(h, w);136          for (let i = divergedImgData.length - 1; i >= 0; i--) {137            clampedImgData.data[i] = divergedImgData[i];138          }139          const lcsDiffResult = imageToCanvasContext(null, h, w);140          lcsDiffResult.putImageData(clampedImgData, 0, 0);141          const divergedImageResult = lcsDiffResult.canvas.toDataURL(142            'image/png'143          );144          showScrubberDivergedImage(divergedImageResult);145          that.loadingDiverge(false);146        },147        false148      );149      worker.addEventListener('error', function (error) {150        showScrubberDivergedImage('');151        that.loadingDiverge(false);152        console.error(error);153      });154      worker.postMessage({155        divergedInput: [156          getImgDataDataFromContext(imageToCanvasContext(refImg)),157          getImgDataDataFromContext(imageToCanvasContext(testImg)),158          h,159          w160        ]161      });162    }163    const dontUseScrubberView = this.state.isRefImageMissing || !hasDiff;164    const showIsolatedRefImage = !hasDiff && scrubberModalMode === 'SHOW_SCRUBBER_REF_IMAGE';165    const showIsolatedTestImage = !hasDiff && scrubberModalMode === 'SHOW_SCRUBBER_TEST_IMAGE';166    return (167      <div>168        <WrapTitle>169          {hasDiff && (170            <div>171              <ScrubberViewBtn172                selected={scrubberModalMode === 'SHOW_SCRUBBER_REF_IMAGE'}173                onClick={showScrubberRefImage}174              >175                REFERENCE176              </ScrubberViewBtn>177              <ScrubberViewBtn178                selected={scrubberModalMode === 'SHOW_SCRUBBER_TEST_IMAGE'}179                onClick={showScrubberTestImage}180              >181                TEST182              </ScrubberViewBtn>183              <ScrubberViewBtn184                selected={scrubberModalMode === 'SHOW_SCRUBBER_DIFF_IMAGE'}185                onClick={showScrubberDiffImage}186              >187                DIFF188              </ScrubberViewBtn>189              <ScrubberViewBtn190                selected={scrubberModalMode === 'SCRUB'}191                onClick={showScrubber}192              >193                SCRUBBER194              </ScrubberViewBtn>195              <ScrubberViewBtn196                selected={scrubberModalMode === 'SHOW_SCRUBBER_DIVERGED_IMAGE'}197                onClick={divergedWorker}198                className={this.state.isLoading ? 'loadingDiverged' : ''}199                style={{200                  display: showDivergedOption() ? '' : 'none'201                }}202              >203                {this.state.isLoading ? 'DIVERGING!' : 'DIVERGED'}204              </ScrubberViewBtn>205            </div>206          )}207        </WrapTitle>208        <Wrapper>209          <img210            id="isolatedRefImage"211            src={refImage}212            style={{213              margin: 'auto',214              display: showIsolatedRefImage ? 'block' : 'none'215            }}216          />217          <img218            id="isolatedTestImage"219            className="testImage"220            src={testImage}221            style={{222              margin: 'auto',223              display: showIsolatedTestImage ? 'block' : 'none'224            }}225          />226          <img227            className="diffImage"228            src={diffImage}229            style={{230              margin: 'auto',231              display: dontUseScrubberView ? 'block' : 'none'232            }}233          />234          <div235            style={{236              display: dontUseScrubberView ? 'none' : 'block'237            }}238          >239            <TwentyTwenty240              verticalAlign="top"241              minDistanceToBeginInteraction={0}242              maxAngleToBeginInteraction={Infinity}243              initialPosition={position}244              newPosition={position}245            >246              <img247                id="scrubberRefImage"248                className="refImage"249                src={refImage}250                onError={this.handleRefImageLoadingError}251              />252              <img253                id="scrubberTestImage"254                className="testImage"255                src={scrubberTestImageSlug}256              />257              <SliderBar className="slider" />258            </TwentyTwenty>259          </div>260        </Wrapper>261      </div>262    );263  }264}265/**266 * ========= DIVERGED HELPERS ========267 */268function getImgDataDataFromContext (context) {269  return context.getImageData(0, 0, context.canvas.width, context.canvas.height)270    .data;271}272function getEmptyImgData (h, w) {273  var o = imageToCanvasContext(null, h, w);274  return o.createImageData(w, h);275}276function imageToCanvasContext (_img, h, w) {277  let img = _img;278  if (!_img) {279    img = { height: h, width: w };280  }281  const canvas = document.createElement('canvas');282  canvas.width = img.width;283  canvas.height = img.height;284  const context = canvas.getContext('2d');285  if (_img) {286    context.drawImage(img, 0, 0);287  }288  return context;...

Using AI Code Generation

1module.exports = async (page, scenario) => {2  await require('./loadCookies')(page, scenario);3  const clickSelectors = scenario.clickSelectors || [];4  const hoverSelectors = scenario.hoverSelectors || [];5  for (const clickSelector of clickSelectors) {6    await page.waitForSelector(clickSelector);7    await page.click(clickSelector);8  }9  for (const hoverSelector of hoverSelectors) {10    await page.waitForSelector(hoverSelector);11    await page.hover(hoverSelector);12  }13  if (postInteractionWait) {14    await page.waitFor(postInteractionWait);15  }16};17{18    {19    },20    {21    }22}

Using AI Code Generation

1var backstop = require('backstopjs');2var backstopConfig = require('./backstop.json');3backstop('reference', { config: backstopConfig })4    .then(function() {5        backstop('test', { config: backstopConfig })6            .then(function() {7                console.log('All done!');8            })9            .catch(function(err) {10                console.log(err);11            });12    })13    .catch(function(err) {14        console.log(err);15    });

Using AI Code Generation

1module.exports = async (page, scenario, vp) => {2  await require('./loadCookies')(page, scenario);3  await page.evaluateOnNewDocument(function () {4    Object.defineProperty(navigator, 'webdriver', {5      get: () => undefined,6    });7  });8  await page.evaluateOnNewDocument(function () {9    window.callPhantom = function () { };10  });11  await page.evaluateOnNewDocument(function () {12    window._phantom = function () { };13  });14  await page.evaluateOnNewDocument(function () {15    window.__nightmare = function () { };16  });17  await page.evaluateOnNewDocument(function () {18    window.navigator.chrome = {19      runtime: {},20    };21  });22  await page.evaluateOnNewDocument(function () {23    const originalQuery = window.navigator.permissions.query;24    return window.navigator.permissions.query = (parameters) => (25        Promise.resolve({ state: Notification.permission }) :26        originalQuery(parameters)27    );28  });29  await page.evaluateOnNewDocument(function () {30    window.navigator.geolocation.getCurrentPosition = function (cb) {31      setTimeout(() => {32        cb({33          coords: {34          },35        });36      }, 1000);37    };38  });39  await page.evaluateOnNewDocument(function () {40    Object.defineProperty(navigator, 'webdriver', {41      get: () => false,42    });43  });44  await page.evaluateOnNewDocument(function () {45    Object.defineProperty(navigator, 'plugins', {46      get: () => [1, 2, 3, 4, 5],47    });48  });49  await page.evaluateOnNewDocument(function () {50    Object.defineProperty(navigator, 'languages', {51      get: () => ['en-US', 'en'],52    });53  });54  await page.evaluateOnNewDocument(function () {

Using AI Code Generation

1module.exports = async (engine, scenario, vp) => {2  console.log('SCENARIO > ' + scenario.label);3  await engine.waitFor(1000);4};5    {6    }

Using AI Code Generation

1var backstop = require('backstopjs');2var path = require('path');3var config = require('./backstop.json');4var childProcess = require('child_process');5var fs = require('fs');6var os = require('os');

Using AI Code Generation

1var backstop = require('backstopjs');2var fs = require('fs');3var config = require('./backstop.json');4var path = require('path');5var child_process = require('child_process');6var phantomjs = require('phantomjs-prebuilt');7var binPath = phantomjs.path;8var spawn = child_process.spawn;9var exec = child_process.exec;10var backstopjs = require('backstopjs');11var path = require('path');12var config = require('./backstop.json');13var child_process = require('child_process');14var phantomjs = require('phantomjs-prebuilt');15var binPath = phantomjs.path;16var spawn = child_process.spawn;17var exec = child_process.exec;18var fs = require('fs');19var backstop = require('backstopjs');20var path = require('path');21var config = require('./backstop.json');22var child_process = require('child_process');23var phantomjs = require('phantomjs-prebuilt');24var binPath = phantomjs.path;25var spawn = child_process.spawn;26var exec = child_process.exec;27var fs = require('fs');28var backstopjs = require('backstopjs');29var path = require('path');30var config = require('./backstop.json');31var child_process = require('child_process');32var phantomjs = require('phantomjs-prebuilt');33var binPath = phantomjs.path;34var spawn = child_process.spawn;35var exec = child_process.exec;36var fs = require('fs');37var backstopjs = require('backstopjs');38var path = require('path');39var config = require('./backstop.json');40var child_process = require('child_process');41var phantomjs = require('phantomjs-prebuilt');42var binPath = phantomjs.path;43var spawn = child_process.spawn;44var exec = child_process.exec;45var fs = require('fs');46var backstopjs = require('backstopjs');47var path = require('path');48var config = require('./backstop.json');49var child_process = require('child_process');50var phantomjs = require('phantomjs-prebuilt');51var binPath = phantomjs.path;52var spawn = child_process.spawn;53var exec = child_process.exec;54var fs = require('fs');55var backstopjs = require('backstopjs');56var path = require('path');57var config = require('./backstop.json');58var child_process = require('child_process');

Using AI Code Generation

1const backstop = require('backstopjs');2const config = require('./backstop.json');3const path = require('path');4const testConfig = {5    {6    },7    {8    },9    {10    },11    {12    }13    {14    }15  "paths": {16  },17  "engineOptions": {18  },19}20const configPath = path.join(__dirname, 'backstop.json');21backstop('test', {22})23.then(() => {24  console.log('Test completed');25})26.catch((error) => {27  console.log(error);28});

Using AI Code Generation

1var backstop = require('backstopjs');2var config = require('./backstop.json');3var divergedWorker = require('./node_modules/backstopjs/core/util/divergedWorker');4var diverged = divergedWorker(config);5if (diverged) {6  backstop('reference').then(function() {7    backstop('test');8  });9} else {10  backstop('test');11}12{13    {14    },15    {16    },17    {18    }19    {20    }21  "paths": {22  },23}24module.exports = function (casper, scenario) {25  casper.echo("onBefore.js: Running casperjs code before taking screenshot");26  casper.echo("onBefore.js: Hiding elements that are not needed for screenshot");

Using AI Code Generation

1var engine = require('backstopjs');2var url = require('url');3var path = require('path');4var fs = require('fs');5var config = require('./backstop.json');6var getDivergedConfig = function (config, scenario, variant, url) {7  var clonedScenario = JSON.parse(JSON.stringify(scenario));8  clonedScenario.label = scenario.label + ' (' + variant + ')';9  clonedScenario.url = url;10  return engine.core.getConfig(clonedScenario, config);11};12var getScenarioDivergedConfig = function (config, scenario, variant, url) {13  var clonedConfig = JSON.parse(JSON.stringify(config));14  clonedConfig.scenarios = [getDivergedConfig(config, scenario, variant, url)];15  return clonedConfig;16};17var getDivergedConfigs = function (config, scenario, variant, url) {18  var divergedConfig = getScenarioDivergedConfig(config, scenario, variant, url);19  var divergedConfigs = [divergedConfig];20  if (scenario.viewports) {21    divergedConfigs = scenario.viewports.map(function (viewport) {22      var clonedConfig = JSON.parse(JSON.stringify(divergedConfig));23      clonedConfig.viewports = [viewport];24      return clonedConfig;25    });26  }27  return divergedConfigs;28};29var divergedWorker = function (config, scenario, variant, url, callback) {30  var divergedConfigs = getDivergedConfigs(config, scenario, variant, url);31  var divergedEngine = engine;32  divergedEngine.testRunner = require('backstopjs/core/command/testRunner');33  divergedEngine.testRunner(divergedConfigs, callback);34};35var scenario = config.scenarios[0];36var callback = function (err, data) {37  if (err) {38    console.log(err);39  } else {40    console.log(data);41  }42};43divergedWorker(config, scenario, 'google', url1, callback);44divergedWorker(config, scenario, 'yahoo', url2, callback);45{46    {47    },48    {

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