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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