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How to use traverseAllChildren method in Playwright Internal
Best JavaScript code snippet using playwright-internal
traverseAllChildren-test.js
Source:traverseAllChildren-test.js 
...30 });31 var simpleKid = <span key="simple" />;32 // Jasmine doesn't provide a way to test that the fn was invoked with scope.33 var instance = <div>{simpleKid}</div>;34 traverseAllChildren(instance.props.children, traverseFn, traverseContext);35 expect(traverseFn).toHaveBeenCalledWith(36 traverseContext,37 simpleKid,38 '.$simple'39 );40 expect(traverseContext.length).toEqual(1);41 });42 it('should treat single arrayless child as being in array', function() {43 var traverseContext = [];44 var traverseFn =45 jasmine.createSpy().andCallFake(function(context, kid, key, index) {46 context.push(true);47 });48 var simpleKid = <span />;49 var instance = <div>{simpleKid}</div>;50 traverseAllChildren(instance.props.children, traverseFn, traverseContext);51 expect(traverseFn).toHaveBeenCalledWith(52 traverseContext,53 simpleKid,54 '.0'55 );56 expect(traverseContext.length).toEqual(1);57 });58 it('should treat single child in array as expected', function() {59 spyOn(console, 'error');60 var traverseContext = [];61 var traverseFn =62 jasmine.createSpy().andCallFake(function(context, kid, key, index) {63 context.push(true);64 });65 var simpleKid = <span />;66 var instance = <div>{[simpleKid]}</div>;67 traverseAllChildren(instance.props.children, traverseFn, traverseContext);68 expect(traverseFn).toHaveBeenCalledWith(69 traverseContext,70 simpleKid,71 '.0'72 );73 expect(traverseContext.length).toEqual(1);74 expect(console.error.calls.length).toBe(1);75 expect(console.error.calls[0].args[0]).toContain('Warning: Each child in an array or iterator should have a unique "key" prop.');76 });77 it('should be called for each child', function() {78 var zero = <div key="keyZero" />;79 var one = null;80 var two = <div key="keyTwo" />;81 var three = null;82 var four = <div key="keyFour" />;83 var traverseContext = [];84 var traverseFn =85 jasmine.createSpy().andCallFake(function(context, kid, key, index) {86 context.push(true);87 });88 var instance = (89 <div>90 {zero}91 {one}92 {two}93 {three}94 {four}95 </div>96 );97 traverseAllChildren(instance.props.children, traverseFn, traverseContext);98 expect(traverseFn).toHaveBeenCalledWith(99 traverseContext,100 zero,101 '.$keyZero'102 );103 expect(traverseFn).toHaveBeenCalledWith(traverseContext, one, '.1');104 expect(traverseFn).toHaveBeenCalledWith(105 traverseContext,106 two,107 '.$keyTwo'108 );109 expect(traverseFn).toHaveBeenCalledWith(traverseContext, three, '.3');110 expect(traverseFn).toHaveBeenCalledWith(111 traverseContext,112 four,113 '.$keyFour'114 );115 });116 it('should traverse children of different kinds', function() {117 var div = <div key="divNode" />;118 var span = <span key="spanNode" />;119 var a = <a key="aNode" />;120 var traverseContext = [];121 var traverseFn =122 jasmine.createSpy().andCallFake(function(context, kid, key, index) {123 context.push(true);124 });125 var instance = (126 <div>127 {div}128 {[frag({span})]}129 {frag({a: a})}130 {'string'}131 {1234}132 {true}133 {false}134 {null}135 {undefined}136 </div>137 );138 traverseAllChildren(instance.props.children, traverseFn, traverseContext);139 expect(traverseFn.calls.length).toBe(9);140 expect(traverseContext.length).toEqual(9);141 expect(traverseFn).toHaveBeenCalledWith(142 traverseContext, div, '.$divNode'143 );144 expect(traverseFn).toHaveBeenCalledWith(145 traverseContext, <span key="span/.$spanNode" />, '.1:0:$span/=1$spanNode'146 );147 expect(traverseFn).toHaveBeenCalledWith(148 traverseContext, <a key="a/.$aNode" />, '.2:$a/=1$aNode'149 );150 expect(traverseFn).toHaveBeenCalledWith(151 traverseContext, 'string', '.3'152 );153 expect(traverseFn).toHaveBeenCalledWith(154 traverseContext, 1234, '.4'155 );156 expect(traverseFn).toHaveBeenCalledWith(157 traverseContext, null, '.5'158 );159 expect(traverseFn).toHaveBeenCalledWith(160 traverseContext, null, '.6'161 );162 expect(traverseFn).toHaveBeenCalledWith(163 traverseContext, null, '.7'164 );165 expect(traverseFn).toHaveBeenCalledWith(166 traverseContext, null, '.8'167 );168 });169 it('should be called for each child in nested structure', function() {170 var zero = <div key="keyZero" />;171 var one = null;172 var two = <div key="keyTwo" />;173 var three = null;174 var four = <div key="keyFour" />;175 var five = <div key="keyFiveInner" />;176 // five is placed into a JS object with a key that is joined to the177 // component key attribute.178 // Precedence is as follows:179 // 1. If grouped in an Object, the object key combined with `key` prop180 // 2. If grouped in an Array, the `key` prop, falling back to array index181 var traverseContext = [];182 var traverseFn =183 jasmine.createSpy().andCallFake(function(context, kid, key, index) {184 context.push(true);185 });186 var instance = (187 <div>{188 [189 frag({190 firstHalfKey: [zero, one, two],191 secondHalfKey: [three, four],192 keyFive: five,193 }),194 ]195 }</div>196 );197 traverseAllChildren(instance.props.children, traverseFn, traverseContext);198 expect(traverseFn.calls.length).toBe(4);199 expect(traverseContext.length).toEqual(4);200 expect(traverseFn).toHaveBeenCalledWith(201 traverseContext,202 <div key="firstHalfKey/.$keyZero" />,203 '.0:$firstHalfKey/=1$keyZero'204 );205 expect(traverseFn).toHaveBeenCalledWith(206 traverseContext,207 <div key="firstHalfKey/.$keyTwo" />,208 '.0:$firstHalfKey/=1$keyTwo'209 );210 expect(traverseFn).toHaveBeenCalledWith(211 traverseContext,212 <div key="secondHalfKey/.$keyFour" />,213 '.0:$secondHalfKey/=1$keyFour'214 );215 expect(traverseFn).toHaveBeenCalledWith(216 traverseContext,217 <div key="keyFive/.$keyFiveInner" />,218 '.0:$keyFive/=1$keyFiveInner'219 );220 });221 it('should retain key across two mappings', function() {222 var zeroForceKey = <div key="keyZero" />;223 var oneForceKey = <div key="keyOne" />;224 var traverseContext = [];225 var traverseFn =226 jasmine.createSpy().andCallFake(function(context, kid, key, index) {227 context.push(true);228 });229 var forcedKeys = (230 <div>231 {zeroForceKey}232 {oneForceKey}233 </div>234 );235 traverseAllChildren(forcedKeys.props.children, traverseFn, traverseContext);236 expect(traverseContext.length).toEqual(2);237 expect(traverseFn).toHaveBeenCalledWith(238 traverseContext,239 zeroForceKey,240 '.$keyZero'241 );242 expect(traverseFn).toHaveBeenCalledWith(243 traverseContext,244 oneForceKey,245 '.$keyOne'246 );247 });248 it('should be called for each child in an iterable without keys', function() {249 spyOn(console, 'error');250 var threeDivIterable = {251 '@@iterator': function() {252 var i = 0;253 return {254 next: function() {255 if (i++ < 3) {256 return {value: <div />, done: false};257 } else {258 return {value: undefined, done: true};259 }260 },261 };262 },263 };264 var traverseContext = [];265 var traverseFn =266 jasmine.createSpy().andCallFake(function(context, kid, key, index) {267 context.push(kid);268 });269 var instance = (270 <div>271 {threeDivIterable}272 </div>273 );274 traverseAllChildren(instance.props.children, traverseFn, traverseContext);275 expect(traverseFn.calls.length).toBe(3);276 expect(traverseFn).toHaveBeenCalledWith(277 traverseContext,278 traverseContext[0],279 '.0'280 );281 expect(traverseFn).toHaveBeenCalledWith(282 traverseContext,283 traverseContext[1],284 '.1'285 );286 expect(traverseFn).toHaveBeenCalledWith(287 traverseContext,288 traverseContext[2],289 '.2'290 );291 expect(console.error.calls.length).toBe(1);292 expect(console.error.calls[0].args[0]).toContain('Warning: Each child in an array or iterator should have a unique "key" prop.');293 });294 it('should be called for each child in an iterable with keys', function() {295 var threeDivIterable = {296 '@@iterator': function() {297 var i = 0;298 return {299 next: function() {300 if (i++ < 3) {301 return {value: <div key={'#' + i} />, done: false};302 } else {303 return {value: undefined, done: true};304 }305 },306 };307 },308 };309 var traverseContext = [];310 var traverseFn =311 jasmine.createSpy().andCallFake(function(context, kid, key, index) {312 context.push(kid);313 });314 var instance = (315 <div>316 {threeDivIterable}317 </div>318 );319 traverseAllChildren(instance.props.children, traverseFn, traverseContext);320 expect(traverseFn.calls.length).toBe(3);321 expect(traverseFn).toHaveBeenCalledWith(322 traverseContext,323 traverseContext[0],324 '.$#1'325 );326 expect(traverseFn).toHaveBeenCalledWith(327 traverseContext,328 traverseContext[1],329 '.$#2'330 );331 expect(traverseFn).toHaveBeenCalledWith(332 traverseContext,333 traverseContext[2],334 '.$#3'335 );336 });337 it('should use keys from entry iterables', function() {338 spyOn(console, 'error');339 var threeDivEntryIterable = {340 '@@iterator': function() {341 var i = 0;342 return {343 next: function() {344 if (i++ < 3) {345 return {value: ['#' + i, <div />], done: false};346 } else {347 return {value: undefined, done: true};348 }349 },350 };351 },352 };353 threeDivEntryIterable.entries = threeDivEntryIterable['@@iterator'];354 var traverseContext = [];355 var traverseFn =356 jasmine.createSpy().andCallFake(function(context, kid, key, index) {357 context.push(kid);358 });359 var instance = (360 <div>361 {threeDivEntryIterable}362 </div>363 );364 traverseAllChildren(instance.props.children, traverseFn, traverseContext);365 expect(traverseFn.calls.length).toBe(3);366 expect(traverseFn).toHaveBeenCalledWith(367 traverseContext,368 traverseContext[0],369 '.$#1:0'370 );371 expect(traverseFn).toHaveBeenCalledWith(372 traverseContext,373 traverseContext[1],374 '.$#2:0'375 );376 expect(traverseFn).toHaveBeenCalledWith(377 traverseContext,378 traverseContext[2],379 '.$#3:0'380 );381 expect(console.error.argsForCall.length).toBe(1);382 expect(console.error.argsForCall[0][0]).toContain(383 'Warning: Using Maps as children is not yet fully supported. It is an ' +384 'experimental feature that might be removed. Convert it to a sequence ' +385 '/ iterable of keyed ReactElements instead.'386 );387 });388 it('should not enumerate enumerable numbers (#4776)', function() {389 /*eslint-disable no-extend-native */390 Number.prototype['@@iterator'] = function() {391 throw new Error('number iterator called');392 };393 /*eslint-enable no-extend-native */394 try {395 var instance = (396 <div>397 {5}398 {12}399 {13}400 </div>401 );402 var traverseFn = jasmine.createSpy();403 traverseAllChildren(instance.props.children, traverseFn, null);404 expect(traverseFn.calls.length).toBe(3);405 expect(traverseFn).toHaveBeenCalledWith(406 null,407 5,408 '.0'409 );410 expect(traverseFn).toHaveBeenCalledWith(411 null,412 12,413 '.1'414 );415 expect(traverseFn).toHaveBeenCalledWith(416 null,417 13,418 '.2'419 );420 } finally {421 delete Number.prototype['@@iterator'];422 }423 });424 it('should throw on object', function() {425 expect(function() {426 traverseAllChildren({a: 1, b: 2}, function() {}, null);427 }).toThrow(428 'Objects are not valid as a React child (found: object with keys ' +429 '{a, b}). If you meant to render a collection of children, use an ' +430 'array instead or wrap the object using createFragment(object) from ' +431 'the React add-ons.'432 );433 });434 it('should throw on regex', function() {435 // Really, we care about dates (#4840) but those have nondeterministic436 // serialization (timezones) so let's test a regex instead:437 expect(function() {438 traverseAllChildren(/abc/, function() {}, null);439 }).toThrow(440 'Objects are not valid as a React child (found: /abc/). If you meant ' +441 'to render a collection of children, use an array instead or wrap the ' +442 'object using createFragment(object) from the React add-ons.'443 );444 });...
ReactChildren.js
Source:ReactChildren.js
...20 if (children == null) {21 return children;22 }23 var traverseContext = ForEachBookKeeping.getPooled(forEachFunc, forEachContext);24 traverseAllChildren(children, forEachSingleChild, traverseContext);25 ForEachBookKeeping.release(traverseContext);26 }27 function MapBookKeeping(mapResult, mapFunction, mapContext) {28 this.mapResult = mapResult;29 this.mapFunction = mapFunction;30 this.mapContext = mapContext;31 }32 PooledClass.addPoolingTo(MapBookKeeping, threeArgumentPooler);33 function mapSingleChildIntoContext(traverseContext, child, name, i) {34 var mapBookKeeping = traverseContext;35 var mapResult = mapBookKeeping.mapResult;36 var keyUnique = !mapResult.hasOwnProperty(name);37 if ("production" !== process.env.NODE_ENV) {38 ("production" !== process.env.NODE_ENV ? warning(keyUnique, 'ReactChildren.map(...): Encountered two children with the same key, ' + '`%s`. Child keys must be unique; when two children share a key, only ' + 'the first child will be used.', name) : null);39 }40 if (keyUnique) {41 var mappedChild = mapBookKeeping.mapFunction.call(mapBookKeeping.mapContext, child, i);42 mapResult[name] = mappedChild;43 }44 }45 function mapChildren(children, func, context) {46 if (children == null) {47 return children;48 }49 var mapResult = {};50 var traverseContext = MapBookKeeping.getPooled(mapResult, func, context);51 traverseAllChildren(children, mapSingleChildIntoContext, traverseContext);52 MapBookKeeping.release(traverseContext);53 return ReactFragment.create(mapResult);54 }55 function forEachSingleChildDummy(traverseContext, child, name, i) {56 return null;57 }58 function countChildren(children, context) {59 return traverseAllChildren(children, forEachSingleChildDummy, null);60 }61 var ReactChildren = {62 forEach: forEachChildren,63 map: mapChildren,64 count: countChildren65 };66 module.exports = ReactChildren;...
Using AI Code Generation
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.waitForSelector('input[name="q"]');7 await page.traverseAllChildren(await page.$('input[name="q"]'), (node) => {8 console.log(node);9 });10 await browser.close();11})();
Using AI Code Generation
1const { traverseAllChildren } = require('@playwright/test/lib/server/frames');2const { chromium } = require('playwright-chromium');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const element = await page.$('text="Docs"');8 const children = traverseAllChildren(element);9 console.log(children);10 await browser.close();11})();12 {13 _context: {14 },15 _page: {16 _workersById: {},17 _fileChoosers: {},
Using AI Code Generation
1const { traverseAllChildren } = require('playwright/lib/server/dom.js');2const { traverseAllChildren } = require('playwright/lib/server/dom.js');3const { chromium } = require('playwright');4(async () => {5 const browser = await chromium.launch();6 const page = await browser.newPage();7 await page.waitForLoadState('networkidle');8 const children = traverseAllChildren(page, (node) => {9 return node.nodeName === 'INPUT';10 });11 console.log(children);12 await browser.close();13})();
Using AI Code Generation
1const { traverseAllChildren } = require('playwright/lib/client/selectorEngine');2const { chromium } = require('playwright');3const { test } = require('@playwright/test');4const { expect } = require('@playwright/test');5const { attachFrame } = require('playwright/lib/client/helper');6const { Frame } = require('playwright/lib/client/frame');7const { Page } = require('playwright/lib/client/page');8const { ElementHandle } = require('playwright/lib/client/elementHandler');9test('test', async ({ page }) => {10 const elements = await traverseAllChildren(page, (element) => {11 return element.getAttribute('data-testid') === 'navbar';12 });13 expect(elements.length).toBe(1);14});15const { traverseAllChildren } = require('playwright/lib/client/selectorEngine');16const { chromium } = require('playwright');17const { test } = require('@playwright/test');18const { expect } = require('@playwright/test');19const { attachFrame } = require('playwright/lib/client/helper');20const { Frame } = require('playwright/lib/client/frame');21const { Page } = require('playwright/lib/client/page');22const { ElementHandle } = require('playwright/lib/client/elementHandler');23test('test', async ({ page }) => {24 const elements = await traverseAllChildren(page, (element) => {25 return element.getAttribute('data-testid') === 'navbar';26 });27 expect(elements.length).toBe(1);28});29FAIL test/test.spec.js (9.234 s)30 11 | const elements = await traverseAllChildren(page, (element) => {31 > 12 | return element.getAttribute('data-testid') === 'navbar';32 13 | });33 14 | expect(elements.length).toBe(1);34 15 | });
Using AI Code Generation
1const { traverseAllChildren } = require('playwright/lib/server/dom');2const { parse } = require('playwright/lib/server/common/parser');3const document = parse(`4`);5const callback = (node) => {6 console.log(node.nodeName);7};8traverseAllChildren(document, callback);
Using AI Code Generation
1const { traverseAllChildren } = require('playwright/lib/client/selectorEngine');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const element = await page.$('body');8 traverseAllChildren(element, (child) => {9 console.log(child);10 });11 await browser.close();12})();13ElementHandle {14 _channel: Connection {15 _events: [Object: null prototype] {},16 _callbacks: [Object: null prototype] {},17 _sessions: [Object: null prototype] {},18 _connection: WebSocket {19 _events: [Object: null prototype] {},20 _extensions: {},21 [Symbol(kCapture)]: false22 },23 _rootSession: Session {24 _events: [Object: null prototype] {},25 _callbacks: [Object: null prototype] {},26 _sessions: [Object: null prototype] {},27 },
Using AI Code Generation
1const { traverseAllChildren } = require('playwright/lib/server/dom.js');2const root = document.body;3const allNodes = [];4traverseAllChildren(root, (node) => {5 allNodes.push(node);6});7console.log(allNodes);8const root = document.body;9const allNodes = [];10traverseAllChildren(root, (node) => {11 allNodes.push(node);12});13console.log(allNodes);14const root = document.body;15const allNodes = [];16traverseAllChildren(root, (node) => {17 allNodes.push(node);18});19console.log(allNodes);20const root = document.body;21const allNodes = [];22traverseAllChildren(root, (node) => {23 allNodes.push(node);24});25console.log(allNodes);26const root = document.body;27const allNodes = [];28traverseAllChildren(root, (node) => {29 allNodes.push(node);30});31console.log(allNodes);32const root = document.body;33const allNodes = [];34traverseAllChildren(root, (node) => {35 allNodes.push(node);36});37console.log(allNodes);38const root = document.body;39const allNodes = [];40traverseAllChildren(root, (node) => {41 allNodes.push(node);42});43console.log(allNodes);44const root = document.body;45const allNodes = [];46traverseAllChildren(root, (node) => {47 allNodes.push(node);48});49console.log(allNodes);50const root = document.body;51const allNodes = [];52traverseAllChildren(root, (node) => {53 allNodes.push(node);54});55console.log(allNodes);56const root = document.body;57const allNodes = [];58traverseAllChildren(root, (node) => {59 allNodes.push(node);60});61console.log(allNodes);62const root = document.body;63const allNodes = [];64traverseAllChildren(root, (node) => {65 allNodes.push(node);66});
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- 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.
- 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.
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- 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.
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- 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.
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