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How to use getEmptyImgData method in backstopjs

Best JavaScript code snippet using backstopjs

ImageScrubber.js

Source:ImageScrubber.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) {...

browser.js

Source:browser.js

...33    const h = img2.height;34    const w = img2.width;35    const img1Ctx = imageToCanvasContext(img1);36    const img2Ctx = imageToCanvasContext(img2);37    const pixelmatchResultImgData = getEmptyImgData(h, w);38    pixelmatch(39        getImgDataDataFromContext(img1Ctx),40        getImgDataDataFromContext(img2Ctx),41        pixelmatchResultImgData.data,42        w,43        h, 44        { threshold: .1, includeAA: true }45    );46    console.time("pixelmatchResult");47    const pixelmatchResult = imageToCanvasContext(null, w, h);48    pixelmatchResult.putImageData(pixelmatchResultImgData, 0, 0);49    console.timeEnd("pixelmatchResult");50    console.time("diverged");51    const divergedImgData = diverged(getImgDataDataFromContext(img1Ctx), getImgDataDataFromContext(img2Ctx), h, w);52    console.timeEnd("diverged");53    // lcsImgData.data = divergedImgData;54    console.time("imgDataTolcsImgData");55    let clampedImgData = getEmptyImgData(h, w)56    for (var i = divergedImgData.length - 1; i >= 0; i--) {57        clampedImgData.data[i] = divergedImgData[i];58    }59    var lcsDiffResult = imageToCanvasContext(null, w, h);60    lcsDiffResult.putImageData(clampedImgData, 0, 0);61    console.timeEnd("imgDataTolcsImgData");62    // console.log('lcsDiffResult>>>', clampedImgData);63    console.timeEnd("total_time");64    document.getElementById('refImage').src = img1Ctx.canvas.toDataURL("image/png");65    document.getElementById('testImage').src = img2Ctx.canvas.toDataURL("image/png");66    document.getElementById('pixelmatch1').src = pixelmatchResult.canvas.toDataURL("image/png");67    // document.getElementById('pixelmatch2').src = pixelmatchResult.canvas.toDataURL("image/png");68    document.getElementById('lcsResult').src = lcsDiffResult.canvas.toDataURL("image/png");69}70/**71 * ========= HELPERS ========72 */73function getImgDataDataFromContext(context) {74    return context.getImageData(0, 0, context.canvas.width, context.canvas.height).data;75}76function getEmptyImgData(h, w) {77    var o = imageToCanvasContext(null, h, w);78    return o.createImageData(w, h);79}80function imageToCanvasContext(_img, w, h) {81    let img = _img;82    if (!_img) {83        img = { width: w, height: h };84    }85    const canvas = document.createElement("canvas");86    canvas.width = img.width;87    canvas.height = img.height;88    const context = canvas.getContext("2d");89    if (_img) {90        context.drawImage(img, 0, 0);...

Using AI Code Generation

1var backstopjs = require('backstopjs');2var config = require('./backstop.json');3backstopjs.getEmptyImgData(config)4  .then(function (data) {5    console.log('data', data);6  })7  .catch(function (err) {8    console.log('err', err);9  });

Using AI Code Generation

1const Backstop = require('backstopjs');2const backstopConfig = require('./backstop.json');3Backstop.getEmptyImgData(backstopConfig, 'test').then((data) => {4  console.log(data);5});6### Backstop.test(config, referenceUrl, scenarios, viewports, paths, engine, report)7 * @param {Object} config - BackstopJS config object8 * @param {String} referenceUrl - Base URL for reference screenshots9 * @param {Array} scenarios - Array of scenarios10 * @param {Array} viewports - Array of viewports11 * @param {Object} paths - Paths to backstopJS12 * @param {String} engine - Engine to use for screenshotting13 * @param {String} report - Report to generate14 * @return {Promise} - Returns a promise15### Backstop.approve(config, referenceUrl, scenarios, viewports, paths, engine, report)16 * @param {Object} config - BackstopJS config object17 * @param {String} referenceUrl - Base URL for reference screenshots18 * @param {Array} scenarios - Array of scenarios19 * @param {Array} viewports - Array of viewports20 * @param {Object} paths - Paths to backstopJS21 * @param {String} engine - Engine to use for screenshotting22 * @param {String} report - Report to generate23 * @return {Promise} - Returns a promise24### Backstop.reject(config, referenceUrl, scenarios, viewports, paths, engine, report)25 * @param {Object} config - BackstopJS config object26 * @param {String} referenceUrl - Base URL for reference screenshots27 * @param {Array} scenarios - Array of scenarios28 * @param {Array} viewports - Array of viewports29 * @param {Object} paths - Paths to backstopJS30 * @param {String} engine - Engine to use for screenshotting31 * @param {String} report - Report to generate32 * @return {Promise} - Returns a promise33### Backstop.getEmptyImgData(config, referenceUrl, scenarios

Using AI Code Generation

1const backstopjs = require('backstopjs');2const img = backstopjs.util.getEmptyImgData(100, 100, 'red');3console.log(img);4const backstopjs = require('backstopjs');5const img = backstopjs.util.getEmptyImgData(100, 100, 'red');6console.log(img);7const backstopjs = require('backstopjs');8const img = backstopjs.util.getEmptyImgData(100, 100, 'red');9console.log(img);10const backstopjs = require('backstopjs');11const img = backstopjs.util.getEmptyImgData(100, 100, 'red');12console.log(img);13const backstopjs = require('backstopjs');14const img = backstopjs.util.getEmptyImgData(100, 100, 'red');15console.log(img);16const backstopjs = require('backstopjs');17const img = backstopjs.util.getEmptyImgData(100, 100, 'red');18console.log(img);19const backstopjs = require('backstopjs');20const img = backstopjs.util.getEmptyImgData(100, 100, 'red');21console.log(img);22const backstopjs = require('backstopjs');23const img = backstopjs.util.getEmptyImgData(100, 100, 'red');24console.log(img);25const backstopjs = require('backstopjs');26const img = backstopjs.util.getEmptyImgData(100, 100, 'red');27console.log(img);

Using AI Code Generation

1const backstop = require('backstopjs');2const backstopConfig = require('./backstop.json');3backstop('reference', {config: backstopConfig}).then(function () {4    console.log('Reference done');5});6const backstop = require('backstopjs');7const backstopConfig = require('./backstop.json');8backstop('test', {config: backstopConfig}).then(function () {9    console.log('Test done');10});11const backstop = require('backstopjs');12const backstopConfig = require('./backstop.json');13backstop('openReport', {config: backstopConfig}).then(function () {14    console.log('Report generated');15});16const backstop = require('backstopjs');17const backstopConfig = require('./backstop.json');18backstop('approve', {config: backstopConfig}).then(function () {19    console.log('Approved');20});21const backstop = require('backstopjs');22const backstopConfig = require('./backstop.json');23backstop('reject', {config: backstopConfig}).then(function () {24    console.log('Rejected');25});26const backstop = require('backstopjs');27const backstopConfig = require('./backstop.json');28backstop('init', {config: backstopConfig}).then(function () {29    console.log('Default config generated');30});31const backstop = require('backstopjs');32const backstopConfig = require('./backstop.json');33backstop('init', {config: backstopConfig}).then(function () {

Using AI Code Generation

1var backstopjs = require('backstopjs');2backstopjs.getEmptyImgData({width: 500, height: 500})3.then(function(data){4});5### backstopjs.getBase64ImageFromDataUrl(dataUrl)6var backstopjs = require('backstopjs');7backstopjs.getBase64ImageFromDataUrl('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAA')8.then(function(data){9});10### backstopjs.saveBase64ImageToFile(options)11var backstopjs = require('backstopjs');12backstopjs.saveBase64ImageToFile({13})14.then(function(data){15});16### backstopjs.saveImageFromDataUrl(options)17var backstopjs = require('backstopjs');18backstopjs.saveImageFromDataUrl({19    dataUrl: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAA',20})21.then(function(data){22});23### backstopjs.getOptimalWindowSizeForSelector(options)24var backstopjs = require('backstopjs');25backstopjs.getOptimalWindowSizeForSelector({26})27.then(function(data){28});

Using AI Code Generation

1var backstopjs = require('backstopjs');2var imgData = backstopjs.util.getEmptyImgData(500, 500);3var backstopjs = require('backstopjs');4var buffer = backstopjs.util.getEmptyJpgBuffer(500, 500);5var backstopjs = require('backstopjs');6var buffer = backstopjs.util.getEmptyPngBuffer(500, 500);7var backstopjs = require('backstopjs');8var buffer = backstopjs.util.getEmptyGifBuffer(500, 500);9var backstopjs = require('backstopjs');10var buffer = backstopjs.util.getEmptyImgBuffer(500, 500, 'png');

Using AI Code Generation

1const getEmptyImgData = require('backstopjs/core/util/getEmptyImgData');2console.log(getEmptyImgData());3const getEmptyImgData = require('backstopjs/core/util/getEmptyImgData');4const emptyImageData = getEmptyImgData();5const getEmptyImgData = require('backstopjs/core/util/getEmptyImgData');6const emptyImageData = getEmptyImgData();7console.log(emptyImageData);8const getEmptyImgData = require('backstopjs/core/util/getEmptyImgData');9const emptyImageData = getEmptyImgData();10const fs = require('fs');11fs.writeFileSync('empty.png', emptyImageData);12![empty image](empty.png)13- [BackstopJS](14backstopjs.getOptimalWindowSizeForSelector({15})16.then(function(data){17});

Using AI Code Generation

1const getEmptyImgData = require('backstopjs/core/util/getEmptyImgData');2console.log(getEmptyImgData());3const getEmptyImgData = require('backstopjs/core/util/getEmptyImgData');4const emptyImageData = getEmptyImgData();5const getEmptyImgData = require('backstopjs/core/util/getEmptyImgData');6const emptyImageData = getEmptyImgData();7console.log(emptyImageData);8const getEmptyImgData = require('backstopjs/core/util/getEmptyImgData');9const emptyImageData = getEmptyImgData();10const fs = require('fs');11fs.writeFileSync('empty.png', emptyImageData);12![empty image](empty.png)13- [BackstopJS](

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