How to use checkDebugID method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactDebugTool.js

Source: ReactDebugTool.js Github

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...72 clearHistory();73 currentFlushStartTime = performanceNow();74 currentFlushMeasurements = [];75 }76 function checkDebugID(debugID) {77 process.env.NODE_ENV !== 'production' ? warning(debugID, 'ReactDebugTool: debugID may not be empty.') : void 0;78 }79 function beginLifeCycleTimer(debugID, timerType) {80 if (currentFlushNesting === 0) {81 return;82 }83 process.env.NODE_ENV !== 'production' ? warning(!currentTimerType, 'There is an internal error in the React performance measurement code. ' + 'Did not expect %s timer to start while %s timer is still in ' + 'progress for %s instance.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another') : void 0;84 currentTimerStartTime = performanceNow();85 currentTimerNestedFlushDuration = 0;86 currentTimerDebugID = debugID;87 currentTimerType = timerType;88 }89 function endLifeCycleTimer(debugID, timerType) {90 if (currentFlushNesting === 0) {91 return;92 }93 process.env.NODE_ENV !== 'production' ? warning(currentTimerType === timerType, 'There is an internal error in the React performance measurement code. ' + 'We did not expect %s timer to stop while %s timer is still in ' + 'progress for %s instance. Please report this as a bug in React.', timerType, currentTimerType || 'no', debugID === currentTimerDebugID ? 'the same' : 'another') : void 0;94 if (isProfiling) {95 currentFlushMeasurements.push({96 timerType: timerType,97 instanceID: debugID,98 duration: performanceNow() - currentTimerStartTime - currentTimerNestedFlushDuration99 });100 }101 currentTimerStartTime = null;102 currentTimerNestedFlushDuration = null;103 currentTimerDebugID = null;104 currentTimerType = null;105 }106 function pauseCurrentLifeCycleTimer() {107 var currentTimer = {108 startTime: currentTimerStartTime,109 nestedFlushStartTime: performanceNow(),110 debugID: currentTimerDebugID,111 timerType: currentTimerType112 };113 lifeCycleTimerStack.push(currentTimer);114 currentTimerStartTime = null;115 currentTimerNestedFlushDuration = null;116 currentTimerDebugID = null;117 currentTimerType = null;118 }119 function resumeCurrentLifeCycleTimer() {120 var _lifeCycleTimerStack$ = lifeCycleTimerStack.pop();121 var startTime = _lifeCycleTimerStack$.startTime;122 var nestedFlushStartTime = _lifeCycleTimerStack$.nestedFlushStartTime;123 var debugID = _lifeCycleTimerStack$.debugID;124 var timerType = _lifeCycleTimerStack$.timerType;125 var nestedFlushDuration = performanceNow() - nestedFlushStartTime;126 currentTimerStartTime = startTime;127 currentTimerNestedFlushDuration += nestedFlushDuration;128 currentTimerDebugID = debugID;129 currentTimerType = timerType;130 }131 var ReactDebugTool = {132 addDevtool: function(devtool) {133 eventHandlers.push(devtool);134 },135 removeDevtool: function(devtool) {136 for (var i = 0; i < eventHandlers.length; i++) {137 if (eventHandlers[i] === devtool) {138 eventHandlers.splice(i, 1);139 i--;140 }141 }142 },143 isProfiling: function() {144 return isProfiling;145 },146 beginProfiling: function() {147 if (isProfiling) {148 return;149 }150 isProfiling = true;151 flushHistory.length = 0;152 resetMeasurements();153 ReactDebugTool.addDevtool(ReactHostOperationHistoryDevtool);154 },155 endProfiling: function() {156 if (!isProfiling) {157 return;158 }159 isProfiling = false;160 resetMeasurements();161 ReactDebugTool.removeDevtool(ReactHostOperationHistoryDevtool);162 },163 getFlushHistory: function() {164 return flushHistory;165 },166 onBeginFlush: function() {167 currentFlushNesting++;168 resetMeasurements();169 pauseCurrentLifeCycleTimer();170 emitEvent('onBeginFlush');171 },172 onEndFlush: function() {173 resetMeasurements();174 currentFlushNesting--;175 resumeCurrentLifeCycleTimer();176 emitEvent('onEndFlush');177 },178 onBeginLifeCycleTimer: function(debugID, timerType) {179 checkDebugID(debugID);180 emitEvent('onBeginLifeCycleTimer', debugID, timerType);181 beginLifeCycleTimer(debugID, timerType);182 },183 onEndLifeCycleTimer: function(debugID, timerType) {184 checkDebugID(debugID);185 endLifeCycleTimer(debugID, timerType);186 emitEvent('onEndLifeCycleTimer', debugID, timerType);187 },188 onBeginReconcilerTimer: function(debugID, timerType) {189 checkDebugID(debugID);190 emitEvent('onBeginReconcilerTimer', debugID, timerType);191 },192 onEndReconcilerTimer: function(debugID, timerType) {193 checkDebugID(debugID);194 emitEvent('onEndReconcilerTimer', debugID, timerType);195 },196 onError: function(debugID) {197 if (currentTimerDebugID != null) {198 endLifeCycleTimer(currentTimerDebugID, currentTimerType);199 }200 emitEvent('onError', debugID);201 },202 onBeginProcessingChildContext: function() {203 emitEvent('onBeginProcessingChildContext');204 },205 onEndProcessingChildContext: function() {206 emitEvent('onEndProcessingChildContext');207 },208 onHostOperation: function(debugID, type, payload) {209 checkDebugID(debugID);210 emitEvent('onHostOperation', debugID, type, payload);211 },212 onSetState: function() {213 emitEvent('onSetState');214 },215 onSetDisplayName: function(debugID, displayName) {216 checkDebugID(debugID);217 emitEvent('onSetDisplayName', debugID, displayName);218 },219 onSetChildren: function(debugID, childDebugIDs) {220 checkDebugID(debugID);221 childDebugIDs.forEach(checkDebugID);222 emitEvent('onSetChildren', debugID, childDebugIDs);223 },224 onSetOwner: function(debugID, ownerDebugID) {225 checkDebugID(debugID);226 emitEvent('onSetOwner', debugID, ownerDebugID);227 },228 onSetParent: function(debugID, parentDebugID) {229 checkDebugID(debugID);230 emitEvent('onSetParent', debugID, parentDebugID);231 },232 onSetText: function(debugID, text) {233 checkDebugID(debugID);234 emitEvent('onSetText', debugID, text);235 },236 onMountRootComponent: function(debugID) {237 checkDebugID(debugID);238 emitEvent('onMountRootComponent', debugID);239 },240 onBeforeMountComponent: function(debugID, element) {241 checkDebugID(debugID);242 emitEvent('onBeforeMountComponent', debugID, element);243 },244 onMountComponent: function(debugID) {245 checkDebugID(debugID);246 emitEvent('onMountComponent', debugID);247 },248 onBeforeUpdateComponent: function(debugID, element) {249 checkDebugID(debugID);250 emitEvent('onBeforeUpdateComponent', debugID, element);251 },252 onUpdateComponent: function(debugID) {253 checkDebugID(debugID);254 emitEvent('onUpdateComponent', debugID);255 },256 onUnmountComponent: function(debugID) {257 checkDebugID(debugID);258 emitEvent('onUnmountComponent', debugID);259 },260 onTestEvent: function() {261 emitEvent('onTestEvent');262 }263 };264 ReactDebugTool.addDevtool(ReactInvalidSetStateWarningDevTool);265 ReactDebugTool.addDevtool(ReactComponentTreeDevtool);266 var url = ExecutionEnvironment.canUseDOM && window.location.href || '';267 if (/​[?&]react_perf\b/​.test(url)) {268 ReactDebugTool.beginProfiling();269 }270 module.exports = ReactDebugTool;271})(require('process'));

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7831eeReactDebugTool.js

Source: 7831eeReactDebugTool.js Github

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...80clearHistory();81currentFlushStartTime=performanceNow();82currentFlushMeasurements=[];83}84function checkDebugID(debugID){var allowRoot=arguments.length>1&&arguments[1]!==undefined?arguments[1]:false;85if(allowRoot&&debugID===0){86return;87}88if(!debugID){89warning(false,'ReactDebugTool: debugID may not be empty.');90}91}92function beginLifeCycleTimer(debugID,timerType){93if(currentFlushNesting===0){94return;95}96if(currentTimerType&&!lifeCycleTimerHasWarned){97warning(98false,99'There is an internal error in the React performance measurement code. '+100'Did not expect %s timer to start while %s timer is still in '+101'progress for %s instance.',102timerType,103currentTimerType||'no',104debugID===currentTimerDebugID?'the same':'another');105lifeCycleTimerHasWarned=true;106}107currentTimerStartTime=performanceNow();108currentTimerNestedFlushDuration=0;109currentTimerDebugID=debugID;110currentTimerType=timerType;111}112function endLifeCycleTimer(debugID,timerType){113if(currentFlushNesting===0){114return;115}116if(currentTimerType!==timerType&&!lifeCycleTimerHasWarned){117warning(118false,119'There is an internal error in the React performance measurement code. '+120'We did not expect %s timer to stop while %s timer is still in '+121'progress for %s instance. Please report this as a bug in React.',122timerType,123currentTimerType||'no',124debugID===currentTimerDebugID?'the same':'another');125lifeCycleTimerHasWarned=true;126}127if(_isProfiling){128currentFlushMeasurements.push({129timerType:timerType,130instanceID:debugID,131duration:performanceNow()-currentTimerStartTime-currentTimerNestedFlushDuration});132}133currentTimerStartTime=0;134currentTimerNestedFlushDuration=0;135currentTimerDebugID=null;136currentTimerType=null;137}138function pauseCurrentLifeCycleTimer(){139var currentTimer={140startTime:currentTimerStartTime,141nestedFlushStartTime:performanceNow(),142debugID:currentTimerDebugID,143timerType:currentTimerType};144lifeCycleTimerStack.push(currentTimer);145currentTimerStartTime=0;146currentTimerNestedFlushDuration=0;147currentTimerDebugID=null;148currentTimerType=null;149}150function resumeCurrentLifeCycleTimer(){var _lifeCycleTimerStack$=151lifeCycleTimerStack.pop(),startTime=_lifeCycleTimerStack$.startTime,nestedFlushStartTime=_lifeCycleTimerStack$.nestedFlushStartTime,debugID=_lifeCycleTimerStack$.debugID,timerType=_lifeCycleTimerStack$.timerType;152var nestedFlushDuration=performanceNow()-nestedFlushStartTime;153currentTimerStartTime=startTime;154currentTimerNestedFlushDuration+=nestedFlushDuration;155currentTimerDebugID=debugID;156currentTimerType=timerType;157}158var lastMarkTimeStamp=0;159var canUsePerformanceMeasure=160typeof performance!=='undefined'&&161typeof performance.mark==='function'&&162typeof performance.clearMarks==='function'&&163typeof performance.measure==='function'&&164typeof performance.clearMeasures==='function';165function shouldMark(debugID){166if(!_isProfiling||!canUsePerformanceMeasure){167return false;168}169var element=ReactComponentTreeHook.getElement(debugID);170if(element==null||typeof element!=='object'){171return false;172}173var isHostElement=typeof element.type==='string';174if(isHostElement){175return false;176}177return true;178}179function markBegin(debugID,markType){180if(!shouldMark(debugID)){181return;182}183var markName=debugID+'::'+markType;184lastMarkTimeStamp=performanceNow();185performance.mark(markName);186}187function markEnd(debugID,markType){188if(!shouldMark(debugID)){189return;190}191var markName=debugID+'::'+markType;192var displayName=ReactComponentTreeHook.getDisplayName(debugID)||'Unknown';193var timeStamp=performanceNow();194if(timeStamp-lastMarkTimeStamp>0.1){195var measurementName=displayName+' ['+markType+']';196performance.measure(measurementName,markName);197}198performance.clearMarks(markName);199performance.clearMeasures(measurementName);200}201var ReactDebugTool={202addHook:function addHook(hook){203hooks.push(hook);204},205removeHook:function removeHook(hook){206for(var i=0;i<hooks.length;i++){207if(hooks[i]===hook){208hooks.splice(i,1);209i--;210}211}212},213isProfiling:function isProfiling(){214return _isProfiling;215},216beginProfiling:function beginProfiling(){217if(_isProfiling){218return;219}220_isProfiling=true;221flushHistory.length=0;222resetMeasurements();223ReactDebugTool.addHook(ReactHostOperationHistoryHook);224},225endProfiling:function endProfiling(){226if(!_isProfiling){227return;228}229_isProfiling=false;230resetMeasurements();231ReactDebugTool.removeHook(ReactHostOperationHistoryHook);232},233getFlushHistory:function getFlushHistory(){234return flushHistory;235},236onBeginFlush:function onBeginFlush(){237currentFlushNesting++;238resetMeasurements();239pauseCurrentLifeCycleTimer();240emitEvent('onBeginFlush');241},242onEndFlush:function onEndFlush(){243resetMeasurements();244currentFlushNesting--;245resumeCurrentLifeCycleTimer();246emitEvent('onEndFlush');247},248onBeginLifeCycleTimer:function onBeginLifeCycleTimer(debugID,timerType){249checkDebugID(debugID);250emitEvent('onBeginLifeCycleTimer',debugID,timerType);251markBegin(debugID,timerType);252beginLifeCycleTimer(debugID,timerType);253},254onEndLifeCycleTimer:function onEndLifeCycleTimer(debugID,timerType){255checkDebugID(debugID);256endLifeCycleTimer(debugID,timerType);257markEnd(debugID,timerType);258emitEvent('onEndLifeCycleTimer',debugID,timerType);259},260onBeginProcessingChildContext:function onBeginProcessingChildContext(){261emitEvent('onBeginProcessingChildContext');262},263onEndProcessingChildContext:function onEndProcessingChildContext(){264emitEvent('onEndProcessingChildContext');265},266onHostOperation:function onHostOperation(operation){267checkDebugID(operation.instanceID);268emitEvent('onHostOperation',operation);269},270onSetState:function onSetState(){271emitEvent('onSetState');272},273onSetChildren:function onSetChildren(debugID,childDebugIDs){274checkDebugID(debugID);275childDebugIDs.forEach(checkDebugID);276emitEvent('onSetChildren',debugID,childDebugIDs);277},278onBeforeMountComponent:function onBeforeMountComponent(debugID,element,parentDebugID){279checkDebugID(debugID);280checkDebugID(parentDebugID,true);281emitEvent('onBeforeMountComponent',debugID,element,parentDebugID);282markBegin(debugID,'mount');283},284onMountComponent:function onMountComponent(debugID){285checkDebugID(debugID);286markEnd(debugID,'mount');287emitEvent('onMountComponent',debugID);288},289onBeforeUpdateComponent:function onBeforeUpdateComponent(debugID,element){290checkDebugID(debugID);291emitEvent('onBeforeUpdateComponent',debugID,element);292markBegin(debugID,'update');293},294onUpdateComponent:function onUpdateComponent(debugID){295checkDebugID(debugID);296markEnd(debugID,'update');297emitEvent('onUpdateComponent',debugID);298},299onBeforeUnmountComponent:function onBeforeUnmountComponent(debugID){300checkDebugID(debugID);301emitEvent('onBeforeUnmountComponent',debugID);302markBegin(debugID,'unmount');303},304onUnmountComponent:function onUnmountComponent(debugID){305checkDebugID(debugID);306markEnd(debugID,'unmount');307emitEvent('onUnmountComponent',debugID);308},309onTestEvent:function onTestEvent(){310emitEvent('onTestEvent');311}};312ReactDebugTool.addDevtool=ReactDebugTool.addHook;313ReactDebugTool.removeDevtool=ReactDebugTool.removeHook;314ReactDebugTool.addHook(ReactInvalidSetStateWarningHook);315ReactDebugTool.addHook(ReactComponentTreeHook);316var url=ExecutionEnvironment.canUseDOM&&window.location.href||'';317if(/​[?&]react_perf\b/​.test(url)){318ReactDebugTool.beginProfiling();319}...

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.checkDebugID('gNO89b');7 await browser.close();8})();9const { chromium } = require('playwright');10(async () => {11 const browser = await chromium.launch();12 const context = await browser.newContext();13 const page = await context.newPage();14 await page.checkDebugID('gNO89b');15 await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19 const browser = await chromium.launch();20 const context = await browser.newContext();21 const page = await context.newPage();22 await page.checkDebugID('gNO89b');23 await browser.close();24})();25const { chromium } = require('playwright');26(async () => {27 const browser = await chromium.launch();28 const context = await browser.newContext();29 const page = await context.newPage();30 await page.checkDebugID('gNO89b');31 await browser.close();32})();33const { chromium } = require('playwright');34(async () => {35 const browser = await chromium.launch();36 const context = await browser.newContext();37 const page = await context.newPage();38 await page.checkDebugID('gNO89b');39 await browser.close();40})();41const { chromium } = require('playwright');42(async () => {43 const browser = await chromium.launch();44 const context = await browser.newContext();45 const page = await context.newPage();46 await page.checkDebugID('gNO89b');47 await browser.close();48})();

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false });4 const context = await browser.newContext();5 const page = await context.newPage();6 const debugId = await page.evaluate(() => {7 return window.playwright._debugID;8 });9 console.log(debugId);10 await browser.close();11})();

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false });4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.screenshot({ path: 'example.png' });7 await browser.close();8})();9const { chromium } = require('playwright');10(async () => {11 const browser = await chromium.launch({ headless: false });12 const context = await browser.newContext();13 const page = await context.newPage();14 await page.screenshot({ path: 'example.png' });15 await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19 const browser = await chromium.launch({ headless: false });20 const context = await browser.newContext();21 const page = await context.newPage();22 await page.screenshot({ path: 'example.png' });23 await browser.close();24})();25const { chromium } = require('playwright');26(async () => {27 const browser = await chromium.launch({ headless: false });28 const context = await browser.newContext();29 const page = await context.newPage();30 await page.screenshot({ path: 'example.png' });31 await browser.close();32})();33const { chromium } = require('playwright');34(async () => {35 const browser = await chromium.launch({ headless: false });36 const context = await browser.newContext();37 const page = await context.newPage();38 await page.screenshot({ path: 'example.png' });39 await browser.close();40})();41const { chromium } = require('playwright');42(async () => {43 const browser = await chromium.launch({ headless: false });44 const context = await browser.newContext();45 const page = await context.newPage();

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false });4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.click('text=Get started');7 await page.click('text=Docs');8 await page.click('text=API');9 const debugId = await page._delegate.checkDebugID();10 console.log(debugId);11 await browser.close();12})();13{ '0': '0x55e5c5e5d5d0',

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false });4 const context = await browser.newContext();5 const page = await context.newPage();6 const id = await page.checkDebugID();7 console.log(id);8 await browser.close();9})();

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const page = await browser.newPage();5 await page.screenshot({ path: 'google.png' });6 await browser.close();7})();8const { chromium } = require('playwright');9(async () => {10 const browser = await chromium.launch();11 const page = await browser.newPage();12 await page.screenshot({ path: 'google.png' });13 await browser.close();14})();

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Using AI Code Generation

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1const { checkDebugID } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const debugID = await checkDebugID(page);7 console.log(debugID);8 await browser.close();9})();10const { getDebugState } = require('playwright');11(async () => {12 const browser = await chromium.launch();13 const context = await browser.newContext();14 const page = await context.newPage();15 const debugID = await checkDebugID(page);16 const debugState = await getDebugState(debugID);17 console.log(debugState);18 await browser.close();19})();20const { getDebugState } = require('playwright');21(async () => {22 const browser = await chromium.launch();23 const context = await browser.newContext();24 const page = await context.newPage();25 const debugID = await checkDebugID(page);26 const debugState = await getDebugState(debugID);27 console.log(debugState);28 await browser.close();29})();30const { getDebugState } = require('playwright');31(async () => {32 const browser = await chromium.launch();33 const context = await browser.newContext();34 const page = await context.newPage();35 const debugID = await checkDebugID(page);36 const debugState = await getDebugState(debugID);37 console.log(debugState);38 await browser.close();39})();40const { getDebugState } = require('play

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch({ headless: false, slowMo: 500 });4 const page = await browser.newPage();5 const debugId = await page._client.send('Browser.checkDebugID');6 console.log(debugId);7 await browser.close();8})();9const { chromium } = require('playwright');10(async () => {11 const browser = await chromium.launch({ headless: false, slowMo: 500 });12 const page = await browser.newPage();13 const debugId = await page._client.send('Browser.checkDebugID');14 console.log(debugId);15 await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19 const browser = await chromium.launch({ headless: false, slowMo: 500 });20 const page = await browser.newPage();21 const debugId = await page._client.send('Browser.checkDebugID');22 console.log(debugId);23 await browser.close();24})();25const { chromium } = require('playwright');26(async () => {27 const browser = await chromium.launch({ headless: false, slowMo: 500 });28 const page = await browser.newPage();29 const debugId = await page._client.send('Browser.checkDebugID');30 console.log(debugId);31 await browser.close();32})();

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1const { checkDebugID } = require('@playwright/​test/​lib/​test');2const { test, expect } = require('@playwright/​test');3test('test', async ({ page }) => {4 const debugId = await checkDebugID(page, 'docs');5 expect(debugId).toBe(true);6});7{8 "scripts": {9 },10 "devDependencies": {11 },12 "dependencies": {13 }14}

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Using AI Code Generation

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1const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');2const debugID = checkDebugID('test-id');3console.log(debugID);4const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');5const debugID = checkDebugID('test-id');6console.log(debugID);7const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');8const debugID = checkDebugID('test-id');9console.log(debugID);10const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');11const debugID = checkDebugID('test-id');12console.log(debugID);13const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');14const debugID = checkDebugID('test-id');15console.log(debugID);16const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');17const debugID = checkDebugID('test-id');18console.log(debugID);19const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');20const debugID = checkDebugID('test-id');21console.log(debugID);22const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');23const debugID = checkDebugID('test-id');24console.log(debugID);25const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');26const debugID = checkDebugID('test-id');27console.log(debugID);28const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');29const debugID = checkDebugID('test-id');30console.log(debugID);31const { checkDebugID } = require('@playwright/​test/​lib/​server/​debugServer');32const debugID = checkDebugID('test-id

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StackOverFlow community discussions

Questions
Discussion

Jest + Playwright - Test callbacks of event-based DOM library

firefox browser does not start in playwright

Is it possible to get the selector from a locator object in playwright?

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

firefox browser does not start in playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})
https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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  6. Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
  7. Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
  8. Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
  9. Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
  10. Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
  11. Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
  12. Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.

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