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How to use findParent method in Playwright Internal

Best JavaScript code snippet using playwright-internal

Element.traversal.js

...249    });250    251    describe("findParent", function() {252        it("should return document.body", function() {253            expect(el.findParent('body')).toEqual(document.body);254        });255        256        it("should return a dom", function() {257            expect(child1.findParent('.wrapper')).toEqual(Ext.getDom(el));258        });259        260        it("should return an el", function() {261            expect(child1.findParent('.wrapper', null, true)).toEqual(el);262        });263        it("should include itself if it matches", function() {264            expect(child4_1_1.findParent('#child4_1_1', null, true)).toBe(child4_1_1);265        });266        it("should default the maxDepth to 50 or the document element", function() {267            var root = Ext.getBody().createChild({268                cls: 'findParentRoot'269            }),270                current = root,271                els = [root],272                i;273            for (i = 0; i < 49; ++i) {274                current = current.createChild();275                els.push(current);276            }277            expect(current.findParent('.findParentRoot', undefined, true)).toBe(root);278            current = current.createChild();279            els.push(current);280            expect(current.findParent('.findParentRoot', undefined, true)).toBeNull();281            expect(els[10].findParent('.doesntExist')).toBeNull();282            Ext.destroy(els);283        });284        285        describe("with maxDepth", function() {286            describe("as a number", function() {287                it("should include an element within the limit", function() {288                    expect(child4_1_1.findParent('#child4', 3, true)).toBe(child4);289                });290                it("should exclude an element at the limit", function() {291                    expect(child4_1_1.findParent('#child4', 2, true)).toBeNull();292                });293                it("should exclude an element above the limit", function() {294                    expect(child4_1_1.findParent('#child4', 1, true)).toBeNull();295                });296            });297            describe("as an element", function() {298                it("should accept a string id", function() {299                    expect(child4_1_1.findParent('.wrapper', 'child4_1')).toBeNull();300                });301                it("should accept a dom element", function() {302                    expect(child4_1_1.findParent('.wrapper', child4_1.dom)).toBeNull();303                });304                it("should accept an Ext.dom.Element", function() {305                    expect(child4_1_1.findParent('.wrapper', child4_1)).toBeNull();306                });307                it("should include an element within the limit", function() {308                    expect(child4_1_1.findParent('.findIt', child4, true)).toBe(child4_1);309                });310                it("should exclude elements at the limit", function() {311                    expect(child4_1_1.findParent('#child4', child4, true)).toBeNull();312                });313                it("should exclude an element above the limit", function() {314                    expect(child4_1_1.findParent('.wrapper', child4, true)).toBeNull();315                });316            });317        });318    });319    320    describe("contains", function(){321        it('should return false for siblings', function(){322            expect(Ext.fly(child1).contains(child4_1_1)).toBe(false);323            expect(Ext.fly(child2).contains(child4_1_1)).toBe(false);324        });325        it('should return true for parents', function(){326            expect(Ext.fly(child4_1).contains(child4_1_1)).toBe(true);327        });328        it('should return true for grandparents', function(){...

index-test.js

Source: index-test.js

1'use strict';2const assert = require('chai').assert;3const findParent = require('../../');4describe('find-parent/index', () => {5  let fixtureDiv;6  let element;7  const optsWithThrowOnMiss = {8    throwOnMiss: true9  };10  const optsWithOutThrowOnMiss = {11    throwOnMiss: false12  };13  function assertHandlesOptions(func) {14    [0, [], ''].forEach(invalidOpts => {15      assert.throws(() => {16        func.call(func, invalidOpts);17      }, 'to be an object');18    });19  }20  before(() => {21    fixtureDiv = document.createElement('div');22    fixtureDiv.className = 'fixture-div';23    document.body.appendChild(fixtureDiv);24  });25  beforeEach(() => {26    const source = '\27    <div class="ancestor">\28      <span id="test" class="parent">\29        <a href="http://google.com" class="itself">link text</a>\30      </span>\31    </div>';32    fixtureDiv.innerHTML = source;33  });34  describe('#byMatcher', () => {35    describe('with an element outside of the document', () => {36      let ancestor;37      let parent;38      beforeEach(() => {39        ancestor = document.createElement('div');40        parent = document.createElement('span');41        element = document.createElement('a');42        parent.appendChild(element);43        ancestor.appendChild(parent);44      });45      it('should throw if opts is defined and not an object', () => {46        assertHandlesOptions(findParent.byMatcher.bind(findParent, element, () => {}));47      });48      it('should return undefined when no parent matches', () => {49        const result = findParent.byMatcher(element, () => false);50        assert.isUndefined(result);51      });52      it('should return undefined when no parent matches and throwOnMiss is false', () => {53        const result = findParent.byMatcher(element, () => false, optsWithOutThrowOnMiss);54        assert.isUndefined(result);55      });56      it('should throw when no parent matches and throwOnMiss is true', () => {57        assert.throws(() => {58          findParent.byMatcher(element, () => false, optsWithThrowOnMiss);59        }, 'Expected to find parent node, but none was found.');60      });61      it('should return itself when it matches', () => {62        const result = findParent.byMatcher(element, () => true);63        assert.equal(result, element);64      });65      it('should find direct parent', () => {66        const result = findParent.byMatcher(element, node => node.tagName === parent.tagName);67        assert.equal(result, parent);68      });69      it('should find ancestor', () => {70        const result = findParent.byMatcher(element, node => node.tagName === ancestor.tagName);71        assert.equal(result, ancestor);72      });73    });74    describe('with an element in the document', () => {75      beforeEach(() => {76        element = document.getElementsByTagName('a')[0];77      });78      it('should never pass matcher the document object', () => {79        const result = findParent.byMatcher(element, () => {80          assert.notEqual(element, document);81          return false;82        });83        assert.isUndefined(result);84      });85      it('should return undefined when no parent matches', () => {86        const result = findParent.byMatcher(element, () => false);87        assert.isUndefined(result);88      });89      it('should return undefined when no parent matches and throwOnMiss is false', () => {90        const result = findParent.byMatcher(element, () => false, optsWithOutThrowOnMiss);91        assert.isUndefined(result);92      });93      it('should throw when no parent matches and throwOnMiss is true', () => {94        assert.throws(() => {95          findParent.byMatcher(element, () => false, optsWithThrowOnMiss);96        }, 'Expected to find parent node, but none was found.');97      });98      it('should return itself when it matches', () => {99        const result = findParent.byMatcher(element, () => true);100        assert.equal(result, element);101      });102      it('should find direct parent', () => {103        const result = findParent.byMatcher(element, node => node.id === 'test');104        assert.equal(result.id, 'test');105      });106      it('should find ancestor', () => {107        const result = findParent.byMatcher(element, node => node.className === 'ancestor');108        assert.equal(result.className, 'ancestor');109      });110    });111  });112  describe('#byClassName', () => {113    beforeEach(() => {114      element = document.getElementsByTagName('a')[0];115    });116    it('should throw if opts is defined and not an object', () => {117      assertHandlesOptions(findParent.byClassName.bind(findParent, element, 'nonExistant'));118    });119    it('should return undefined if there are no ancestors with className', () => {120      const result = findParent.byClassName(element, 'nonexistant');121      assert.isUndefined(result);122    });123    it('should return undefined if there are no ancestors with className and throwOnMiss is false', () => {124      const result = findParent.byClassName(element, 'nonexistant', optsWithOutThrowOnMiss);125      assert.isUndefined(result);126    });127    it('should throw if there are no ancestors with className and throwOnMiss is true', () => {128      assert.throws(() => {129        findParent.byClassName(element, 'nonexistant', optsWithThrowOnMiss);130      }, 'Expected to find parent node, but none was found.');131    });132    it('should return itself when it has className', () => {133      const result = findParent.byClassName(element, 'itself');134      assert.equal(result.className, 'itself');135    });136    it('should return parent with className', () => {137      const result = findParent.byClassName(element, 'parent');138      assert.equal(result.className, 'parent');139    });140    it('should return ancestor with className', () => {141      const result = findParent.byClassName(element, 'ancestor');142      assert.equal(result.className, 'ancestor');143    });144  });145  describe('#withDataAttribute', () => {146    beforeEach(() => {147      const source = '\148      <div class="ancestor" data-ancestor-node="1">\149        <span id="test" class="parent" data-parent-node="2">\150          <a href="http://google.com" class="itself" data-itself="3">link text</a>\151        </span>\152      </div>';153      fixtureDiv.innerHTML = source;154      element = document.getElementsByTagName('a')[0];155    });156    it('should throw if opts is defined and not an object', () => {157      assertHandlesOptions(findParent.withDataAttribute.bind(findParent, element, 'nonExistant'));158    });159    it('should return undefined if there are no ancestors with className', () => {160      const result = findParent.withDataAttribute(element, 'nonExistant');161      assert.isUndefined(result);162    });163    it('should return undefined if there are no ancestors with className and throwOnMiss is false', () => {164      const result = findParent.withDataAttribute(element, 'nonExistant', optsWithOutThrowOnMiss);165      assert.isUndefined(result);166    });167    it('should throw if there are no ancestors with className and throwOnMiss is true', () => {168      assert.throws(() => {169        findParent.withDataAttribute(element, 'nonExistant', optsWithThrowOnMiss);170      }, 'Expected to find parent node, but none was found.');171    });172    it('should return itself when it has the data attribute', () => {173      const result = findParent.withDataAttribute(element, 'itself');174      assert.equal(result.className, 'itself');175    });176    it('should return parent with data attribute', () => {177      const result = findParent.withDataAttribute(element, 'parentNode');178      assert.equal(result.className, 'parent');179    });180    it('should return ancestor with data attribute', () => {181      const result = findParent.withDataAttribute(element, 'ancestorNode');182      assert.equal(result.className, 'ancestor');183    });184  });...

babel-plugin-jest-native-globals.js

Source: babel-plugin-jest-native-globals.js

...32      ReferencedIdentifier(path, state) {33        if (path.node.name === 'Promise' && !state.jestInjectedPromise) {34          state.jestInjectedPromise = true;35          path36            .findParent(p => p.isProgram())37            .unshiftContainer('body', promiseDeclaration());38          path39            .findParent(p => p.isProgram())40            .unshiftContainer('body', symbolDeclaration());41        }42        if (path.node.name === 'Symbol' && !state.jestInjectedSymbol) {43          state.jestInjectedSymbol = true;44          path45            .findParent(p => p.isProgram())46            .unshiftContainer('body', symbolDeclaration());47        }48        if (49          path.node.name === 'Date' &&50          path.parent.property &&51          path.parent.property.name === 'now'52        ) {53          if (!state.jestInjectedNow) {54            state.jestInjectedNow = true;55            path56              .findParent(p => p.isProgram())57              .unshiftContainer('body', nowDeclaration());58            path59              .findParent(p => p.isProgram())60              .unshiftContainer('body', symbolDeclaration());61          }62          path.parentPath.replaceWithSourceString('jestNow');63        }64        if (65          path.node.name === 'fs' &&66          path.parent.property &&67          ['readFileSync', 'writeFileSync', 'existsSync'].includes(68            path.parent.property.name69          )70        ) {71          if (72            !state.jestInjectedRead &&73            path.parent.property.name === 'readFileSync'74          ) {75            state.jestInjectedRead = true;76            path77              .findParent(p => p.isProgram())78              .unshiftContainer('body', fsReadFileDeclaration());79            path80              .findParent(p => p.isProgram())81              .unshiftContainer('body', symbolDeclaration());82            path.parentPath.replaceWithSourceString('jestReadFile');83          }84          if (85            !state.jestInjectedWrite &&86            path.parent.property.name === 'writeFileSync'87          ) {88            state.jestInjectedWrite = true;89            path90              .findParent(p => p.isProgram())91              .unshiftContainer('body', fsWriteFileDeclaration());92            path93              .findParent(p => p.isProgram())94              .unshiftContainer('body', symbolDeclaration());95            path.parentPath.replaceWithSourceString('jestWriteFile');96          }97          if (98            !state.jestInjectedExists &&99            path.parent.property.name === 'existsSync'100          ) {101            state.jestInjectedExists = true;102            path103              .findParent(p => p.isProgram())104              .unshiftContainer('body', fsExistsFileDeclaration());105            path106              .findParent(p => p.isProgram())107              .unshiftContainer('body', symbolDeclaration());108            path.parentPath.replaceWithSourceString('jestExistsFile');109          }110        }111      },112    },113  };...

jira-operations-test.js

Source: jira-operations-test.js

...25        .should.eventually.be.rejectedWith(/Cannot find Epic Link Field/)26        .notify(done);27    });28    it('Find Parent from Sub-task', async function() {29      const parent = await findParent(dummyJira.issues.SubTask1, dummyJira);30      parent.fields.issuetype.name.should.eql('Story');31    });32    it('Find Parent from Feature Defect', async function() {33      const parent = await findParent(dummyJira.issues.FeatureDefect1, dummyJira);34      parent.fields.issuetype.name.should.eql('Story');35    });36    it('Find Parent from Story by EpicLink', async function() {37      dummyJira.listFields = async function() {38        return dummyJira.fields.epicLink;39      };40      dummyJira.host = 'jira.host3.com';41      const parent = await findParent(dummyJira.issues.Story3, dummyJira);42      parent.fields.issuetype.name.should.eql('Epic');43    });44    it('Find Parent from Story by IssueLink', async function() {45      const parent = await findParent(dummyJira.issues.Story4, dummyJira);46      parent.fields.issuetype.name.should.eql('Initiative');47    });48    it('Find Parent from Story with no Epic or Initiative', (done) => {49      findParent(dummyJira.issues.Story9, dummyJira)50        .should.eventually.be.rejectedWith(51          /Story9 does not have an associated parent Initiative or Epic./)52        .notify(done);53    });54    it('Find Parent from Epic', async function() {55      const parent = await findParent(dummyJira.issues.Epic3, dummyJira);56      parent.fields.issuetype.name.should.eql('Initiative');57    });58    it('No Parent Found from Epic', done => {59      findParent(dummyJira.issues.Epic1, dummyJira)60        .should.eventually.be.rejectedWith(61          /initiative from Epic Epic1 in issue links. Initiative should be linked by 'relates to'/)62        .notify(done);63    });64    it('No Parent Found from Initiative', done => {65      findParent(dummyJira.issues.I2, dummyJira)66        .should.eventually.be.rejectedWith(/Initiative should not have a parent/)67        .notify(done);68    });69  });70  describe('Relates Check', () => {71    it('Good Link', () => {72      const result = findIssueLinkParentKey(dummyJira.issues.Story2);73      result.should.equal('I2');74    });75    it('Bad Link', () => {76      const result = findIssueLinkParentKey(dummyJira.issues.Story5);77      expect(result).to.be.null;78    });79  });80  describe('Memoization Tests', () => {81    let spy;82    it('findParent with Same Key is Called Only Once', async function() {83      spy = sinon.spy(dummyJira, 'findIssue');84      const [first, second] = await Promise.all([85        findParent(dummyJira.issues.SubTask2, dummyJira),86        findParent(dummyJira.issues.SubTask2, dummyJira)87      ]);88      spy.calledOnce.should.be.true;89      first.should.equal(second);90    });91    it('getEpicLinkField with Same JIRA Host is Called Only Once', async function() {92      spy = sinon.spy(dummyJira, 'listFields');93      dummyJira.host = 'jira.host4.com';94      const [first, second] = await Promise.all([95        getEpicLinkField(dummyJira),96        getEpicLinkField(dummyJira)97      ]);98      spy.calledOnce.should.be.true;99      first.should.equal(second);100    });...

findParent.js

Source: findParent.js

1import { initModule } from '../../helpers/test-config';2import { test } from 'qunit';3export default function() {4  initModule('methods/findParent.js');5  test('.findParent() finds parent', t => {6    const C4 = Ractive.extend({7      template: 'this space for rent'8    });9    const C3 = Ractive.extend({10      template: '<C4/>',11      components: { C4 }12    });13    const C2 = Ractive.extend({14      template: '<C3/>',15      components: { C3 }16    });17    const C1 = Ractive.extend({18      template: '<C2/>',19      components: { C2 }20    });21    const ractive = new Ractive({22      el: fixture,23      template: '<C1/>',24      components: { C1 }25    });26    const c1 = ractive.findComponent('C1');27    const c2 = ractive.findComponent('C2');28    const c3 = ractive.findComponent('C3');29    const c4 = ractive.findComponent('C4');30    t.equal(c4.findParent('foo'), null);31    t.equal(c4.findParent('C3'), c3);32    t.equal(c4.findParent('C2'), c2);33    t.equal(c4.findParent('C1'), c1);34    t.equal(c3.findParent('C4'), null);35    t.equal(c3.findParent('C3'), null);36    t.equal(c3.findParent('C2'), c2);37    t.equal(c3.findParent('C1'), c1);38    t.equal(c2.findParent('C1'), c1);39  });...

섬 연결하기.js

Source: 섬 연결하기.js

...6    parent[i] = i;7  }8  const findParent = (parent, x) => {9    if (parent[x] !== x) {10      parent[x] = findParent(parent, parent[x]);11    }12    return parent[x];13  };14  const unionParent = (parent, a, b) => {15    a = findParent(parent, a);16    b = findParent(parent, b);17    if (a < b) {18      parent[b] = a;19    } else {20      parent[a] = b;21    }22  };23  for (const [start, end, cost] of costs) {24    if (findParent(parent, start) !== findParent(parent, end)) {25      unionParent(parent, start, end);26      answer += cost;27    }28  }29  return answer;...

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  const handle = await page.$('text="Get Started"');7  const parent = await handle.evaluateHandle((node) => node.findParent('a'));8  await parent.evaluate((node) => node.click());9  await browser.close();10})();11const { chromium } = require('playwright');12(async () => {13  const browser = await chromium.launch();14  const context = await browser.newContext();15  const page = await context.newPage();16  const handle = await page.$('text="Get Started"');17  const child = await handle.evaluateHandle((node) => node.findChild('a'));18  await child.evaluate((node) => node.click());19  await browser.close();20})();21const { chromium } = require('playwright');22(async () => {23  const browser = await chromium.launch();24  const context = await browser.newContext();25  const page = await context.newPage();26  const handle = await page.$('text="Get Started"');27  const siblings = await handle.evaluateHandle((node) => node.findSiblings());28  await siblings.evaluate((node) => node.click());29  await browser.close();30})();31const { chromium } = require('playwright');32(async () => {33  const browser = await chromium.launch();34  const context = await browser.newContext();35  const page = await context.newPage();36  const handle = await page.$('text="Get Started"');37  const nextSiblings = await handle.evaluateHandle((node) => node.findNextSiblings());38  await nextSiblings.evaluate((node) => node.click());

Using AI Code Generation

1const path = require('path');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 input = await page.$('input');8  const form = await input.evaluateHandle((node) => node.findParent('form'));9  await form.evaluate((node) => node.submit());10  await browser.close();11})();12const path = require('path');13const { chromium } = require('playwright');14(async () => {15  const browser = await chromium.launch();16  const context = await browser.newContext();17  const page = await context.newPage();18  const input = await page.$('input');19  const form = await input.evaluateHandle((node) => node.findParent('form'));20  await form.evaluate((node) => node.submit());21  await browser.close();22})();23const path = require('path');24const { chromium } = require('playwright');25(async () => {26  const browser = await chromium.launch();27  const context = await browser.newContext();28  const page = await context.newPage();29  const input = await page.$('input');30  const form = await input.evaluateHandle((node) => node.findParent('form'));31  await form.evaluate((node) => node.submit());32  await browser.close();33})();34const path = require('path');35const { chromium } = require('playwright');36(async () => {37  const browser = await chromium.launch();38  const context = await browser.newContext();39  const page = await context.newPage();40  const input = await page.$('input');41  const form = await input.evaluateHandle((node) => node.findParent('form'));42  await form.evaluate((node) => node.submit());43  await browser.close();44})();45const path = require('path');46const { chromium } = require

Using AI Code Generation

1const { findParent } = require('playwright/lib/server/frames');2const { Frame } = require('playwright/lib/server/frame');3const { ElementHandle } = require('playwright/lib/server/dom');4const { JSHandle } = require('playwright/lib/server/jsHandle');5const { ElementHandleChannel } = require('playwright/lib/channels');6const { FrameChannel } = require('playwright/lib/channels');7const { JSHandleChannel } = require('playwright/lib/channels');8const { PageChannel } = require('playwright/lib/channels');9const frame = new Frame(new FrameChannel(null, null, null, null, null, null), null, null, null, null, null, null, null, null, null, null, null, null, null, null);10const elementHandle = new ElementHandle(new ElementHandleChannel(null, null, null, null, null, null), null, null, null, null, null, null, null, null, null, null, null);11const jsHandle = new JSHandle(new JSHandleChannel(null, null, null, null, null, null), null, null, null, null, null, null, null, null, null, null, null);12const page = new PageChannel(null, null, null, null, null, null);13const parent = findParent(frame, elementHandle, jsHandle, page);14console.log(parent);15    at findParent (/Users/.../test.js:8:49)16    at Object.<anonymous> (/Users/.../test.js:41:18)17    at Module._compile (internal/modules/cjs/loader.js:1158:30)18    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1178:10)19    at Module.load (internal/modules/cjs/loader.js:1002:32)20    at Function.Module._load (internal/modules/cjs/loader.js:901:14)21    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)

Using AI Code Generation

1const { findParent } = require('@playwright/test/lib/server/frames');2const { Frame } = require('@playwright/test/lib/server/chromium/crPage');3const { ElementHandle } = require('@playwright/test/lib/server/dom');4 * @param {!Frame} frame5 * @param {!ElementHandle} element6 * @param {string} selector7async function findParentElement(frame, element, selector) {8  const parent = await findParent(frame, element);9  if (!parent)10    return null;11  const handle = await parent.$(selector);12  if (handle)13    return handle;14  return findParentElement(parent._page.mainFrame(), parent, selector);15}16module.exports = { findParentElement };

Using AI Code Generation

1const { findParent } = require('playwright/lib/server/dom.js');2const elementHandle = await page.$('div');3const parentElement = await findParent(elementHandle);4console.log(parentElement);5ElementHandle {6  _context: BrowserContext {7    _browser: Browser {8      _timeoutSettings: TimeoutSettings { _defaultTimeout: 30000 },9    },10    _options: {11      userAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36',12    },13    _timeoutSettings: TimeoutSettings { _defaultTimeout: 30000 },14    _permissions: {},15    _extraHTTPHeaders: {},

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false, slowMo: 50 });4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.click('text=Today\'s Deals');7  const popup = await page.$('#nav-xshop > a:nth-child(3)');8  const parent = await popup.evaluateHandle((node) => node.parentNode);9  await parent.click();10  await page.screenshot({ path: `example.png` });11  await browser.close();12})();

StackOverFlow community discussions

Questions

Discussion

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

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

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

firefox browser does not start in playwright

Running Playwright in Azure Function

firefox browser does not start in playwright

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-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

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

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