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How to use getPropType method in Playwright Internal

Best JavaScript code snippet using playwright-internal

getPropType-test.js

...28      'elementType',29    ];30    simplePropTypes.forEach(type =>31      expect(32        getPropType(expression('React.PropTypes.' + type), noopImporter),33      ).toEqual({34        name: type,35      }),36    );37    // It doesn't actually matter what the MemberExpression is38    simplePropTypes.forEach(type =>39      expect(40        getPropType(expression('Foo.' + type + '.bar'), noopImporter),41      ).toEqual({42        name: type,43      }),44    );45    // Doesn't even have to be a MemberExpression46    simplePropTypes.forEach(type =>47      expect(getPropType(expression(type), noopImporter)).toEqual({48        name: type,49      }),50    );51  });52  it('detects complex prop types', () => {53    expect(54      getPropType(expression('oneOf(["foo", "bar"])'), noopImporter),55    ).toEqual({56      name: 'enum',57      value: [58        { value: '"foo"', computed: false },59        { value: '"bar"', computed: false },60      ],61    });62    // line comments are ignored63    expect(64      getPropType(expression('oneOf(["foo", // baz\n"bar"])'), noopImporter),65    ).toEqual({66      name: 'enum',67      value: [68        { value: '"foo"', computed: false },69        { value: '"bar"', computed: false },70      ],71    });72    expect(73      getPropType(expression('oneOfType([number, bool])'), noopImporter),74    ).toEqual({75      name: 'union',76      value: [{ name: 'number' }, { name: 'bool' }],77    });78    // custom type79    expect(getPropType(expression('oneOfType([foo])'), noopImporter)).toEqual({80      name: 'union',81      value: [{ name: 'custom', raw: 'foo' }],82    });83    expect(getPropType(expression('instanceOf(Foo)'), noopImporter)).toEqual({84      name: 'instanceOf',85      value: 'Foo',86    });87    expect(getPropType(expression('arrayOf(string)'), noopImporter)).toEqual({88      name: 'arrayOf',89      value: { name: 'string' },90    });91    expect(getPropType(expression('objectOf(string)'), noopImporter)).toEqual({92      name: 'objectOf',93      value: { name: 'string' },94    });95    expect(96      getPropType(expression('shape({foo: string, bar: bool})'), noopImporter),97    ).toEqual({98      name: 'shape',99      value: {100        foo: {101          name: 'string',102          required: false,103        },104        bar: {105          name: 'bool',106          required: false,107        },108      },109    });110    expect(111      getPropType(expression('exact({foo: string, bar: bool})'), noopImporter),112    ).toEqual({113      name: 'exact',114      value: {115        foo: {116          name: 'string',117          required: false,118        },119        bar: {120          name: 'bool',121          required: false,122        },123      },124    });125    // custom126    expect(getPropType(expression('shape({foo: xyz})'), noopImporter)).toEqual({127      name: 'shape',128      value: {129        foo: {130          name: 'custom',131          raw: 'xyz',132          required: false,133        },134      },135    });136    // custom137    expect(getPropType(expression('exact({foo: xyz})'), noopImporter)).toEqual({138      name: 'exact',139      value: {140        foo: {141          name: 'custom',142          raw: 'xyz',143          required: false,144        },145      },146    });147    // computed148    expect(149      getPropType(expression('shape(Child.propTypes)'), noopImporter),150    ).toEqual({151      name: 'shape',152      value: 'Child.propTypes',153      computed: true,154    });155    // computed156    expect(157      getPropType(expression('exact(Child.propTypes)'), noopImporter),158    ).toEqual({159      name: 'exact',160      value: 'Child.propTypes',161      computed: true,162    });163  });164  describe('resolve identifier to their values', () => {165    const mockImporter = makeMockImporter({166      shape: statement(`167        export default {bar: PropTypes.string};168      `).get('declaration'),169      types: statement(`170        export default ["foo", "bar"];171      `).get('declaration'),172      foo: statement(`173        export default "foo";174      `).get('declaration'),175      bar: statement(`176        export default "bar";177      `).get('declaration'),178      obj: statement(`179        export default { FOO: "foo", BAR: "bar" };180      `).get('declaration'),181      arr: statement(`182        export default ["foo", "bar"];183      `).get('declaration'),184      keys: statement(`185        export default Object.keys(obj);186        import obj from 'obj';187      `).get('declaration'),188      values: statement(`189        export default Object.values(obj);190        import obj from 'obj';191      `).get('declaration'),192    });193    it('resolves variables to their values', () => {194      const propTypeExpression = statement(`195        PropTypes.shape(shape);196        var shape = {bar: PropTypes.string};197      `).get('expression');198      expect(getPropType(propTypeExpression, noopImporter)).toMatchSnapshot();199    });200    it('resolves imported variables to their values', () => {201      const propTypeExpression = statement(`202        PropTypes.shape(shape);203        import shape from 'shape';204      `).get('expression');205      expect(getPropType(propTypeExpression, mockImporter)).toMatchSnapshot();206    });207    it('resolves simple identifier to their initialization value', () => {208      const propTypeIdentifier = statement(`209        PropTypes.oneOf(TYPES);210        var TYPES = ["foo", "bar"];211      `).get('expression');212      expect(getPropType(propTypeIdentifier, noopImporter)).toMatchSnapshot();213    });214    it('resolves importer identifier to initialization value', () => {215      const propTypeIdentifier = statement(`216        PropTypes.oneOf(TYPES);217        import TYPES from 'types';218      `).get('expression');219      expect(getPropType(propTypeIdentifier, mockImporter)).toMatchSnapshot();220    });221    it('resolves simple identifier to their initialization value in array', () => {222      const identifierInsideArray = statement(`223        PropTypes.oneOf([FOO, BAR]);224        var FOO = "foo";225        var BAR = "bar";226      `).get('expression');227      expect(228        getPropType(identifierInsideArray, noopImporter),229      ).toMatchSnapshot();230    });231    it('resolves imported identifier to their initialization value in array', () => {232      const identifierInsideArray = statement(`233        PropTypes.oneOf([FOO, BAR]);234        import FOO from 'foo';235        import BAR from 'bar';236      `).get('expression');237      expect(238        getPropType(identifierInsideArray, mockImporter),239      ).toMatchSnapshot();240    });241    it('resolves memberExpressions', () => {242      const propTypeExpression = statement(`243        PropTypes.oneOf([TYPES.FOO, TYPES.BAR]);244        var TYPES = { FOO: "foo", BAR: "bar" };245      `).get('expression');246      expect(getPropType(propTypeExpression, noopImporter)).toMatchSnapshot();247    });248    it('resolves memberExpressions from imported objects', () => {249      const propTypeExpression = statement(`250        PropTypes.oneOf([TYPES.FOO, TYPES.BAR]);251        import TYPES from 'obj';252      `).get('expression');253      expect(getPropType(propTypeExpression, mockImporter)).toMatchSnapshot();254    });255    it('correctly resolves SpreadElements in arrays', () => {256      const propTypeExpression = statement(`257        PropTypes.oneOf([...TYPES]);258        var TYPES = ["foo", "bar"];259      `).get('expression');260      expect(getPropType(propTypeExpression, noopImporter)).toMatchSnapshot();261    });262    it('correctly resolves SpreadElements in arrays from imported values', () => {263      const propTypeExpression = statement(`264        PropTypes.oneOf([...TYPES]);265        import TYPES from 'arr';266      `).get('expression');267      expect(getPropType(propTypeExpression, mockImporter)).toMatchSnapshot();268    });269    it('correctly resolves nested SpreadElements in arrays', () => {270      const propTypeExpression = statement(`271        PropTypes.oneOf([...TYPES]);272        var TYPES = ["foo", ...TYPES2];273        var TYPES2 = ["bar"];274      `).get('expression');275      expect(getPropType(propTypeExpression, noopImporter)).toMatchSnapshot();276    });277    it('does resolve object keys values', () => {278      const propTypeExpression = statement(`279        PropTypes.oneOf(Object.keys(TYPES));280        var TYPES = { FOO: "foo", BAR: "bar" };281      `).get('expression');282      expect(getPropType(propTypeExpression, noopImporter)).toMatchSnapshot();283    });284    it('resolves values from imported Object.keys call', () => {285      const propTypeExpression = statement(`286        PropTypes.oneOf(keys);287        import keys from 'keys';288      `).get('expression');289      expect(getPropType(propTypeExpression, mockImporter)).toMatchSnapshot();290    });291    it('does resolve object values', () => {292      const propTypeExpression = statement(`293        PropTypes.oneOf(Object.values(TYPES));294        var TYPES = { FOO: "foo", BAR: "bar" };295      `).get('expression');296      expect(getPropType(propTypeExpression, noopImporter)).toMatchSnapshot();297    });298    it('resolves values from imported Object.values call', () => {299      const propTypeExpression = statement(`300        PropTypes.oneOf(values);301        import values from 'values';302      `).get('expression');303      expect(getPropType(propTypeExpression, mockImporter)).toMatchSnapshot();304    });305    it('does not resolve external values without proper importer', () => {306      const propTypeExpression = statement(`307        PropTypes.oneOf(TYPES);308        import { TYPES } from './foo';309      `).get('expression');310      expect(getPropType(propTypeExpression, noopImporter)).toMatchSnapshot();311    });312  });313  it('detects custom validation functions for function', () => {314    expect(315      getPropType(expression('(function() {})'), noopImporter),316    ).toMatchSnapshot();317  });318  it('detects custom validation functions for arrow function', () => {319    expect(getPropType(expression('() => {}'), noopImporter)).toMatchSnapshot();320  });321  it('detects descriptions on nested types in arrayOf', () => {322    expect(323      getPropType(324        expression(`arrayOf(325      /**326       * test2327       */328      string329    )`),330        noopImporter,331      ),332    ).toMatchSnapshot();333  });334  it('detects descriptions on nested types in objectOf', () => {335    expect(336      getPropType(337        expression(`objectOf(338      /**339       * test2340       */341      string342    )`),343        noopImporter,344      ),345    ).toMatchSnapshot();346  });347  it('detects descriptions on nested types in shapes', () => {348    expect(349      getPropType(350        expression(`shape({351      /**352       * test1353       */354      foo: string,355      /**356       * test2357       */358      bar: bool359    })`),360        noopImporter,361      ),362    ).toMatchSnapshot();363  });364  it('detects required notations of nested types in shapes', () => {365    expect(366      getPropType(367        expression(`shape({368      foo: string.isRequired,369      bar: bool370    })`),371        noopImporter,372      ),373    ).toMatchSnapshot();374  });375  it('detects descriptions on nested types in exacts', () => {376    expect(377      getPropType(378        expression(`exact({379      /**380       * test1381       */382      foo: string,383      /**384       * test2385       */386      bar: bool387    })`),388        noopImporter,389      ),390    ).toMatchSnapshot();391  });392  it('detects required notations of nested types in exacts', () => {393    expect(394      getPropType(395        expression(`exact({396      foo: string.isRequired,397      bar: bool398    })`),399        noopImporter,400      ),401    ).toMatchSnapshot();402  });403  it('handles computed properties', () => {404    expect(405      getPropType(406        expression(`exact({407      [foo]: string.isRequired,408      bar: bool409    })`),410        noopImporter,411      ),412    ).toMatchSnapshot();413  });414  it('ignores complex computed properties', () => {415    expect(416      getPropType(417        expression(`exact({418      [() => {}]: string.isRequired,419      bar: bool420    })`),421        noopImporter,422      ),423    ).toMatchSnapshot();424  });...

validators.js

Source: validators.js

...222  }223};224//utils225function isString(input) {226  return getPropType(input) === 'string' || input instanceof String;227}228function isRealObject(input) {229  return input !== null && getPropType(input) === 'object';230}231function isNumber(input) {232  return getPropType(input) === 'number';233}234function isRealNumber(input) {235  return getPropType(input) === 'number' && !isNaN(input) && isFinite(input);236}237function isFunction(input) {238  return getPropType(input) === 'function';239}240function isDate(input) {241  return getPreciseType(input) === 'date';242}243// Equivalent of `typeof` but with special handling for array and regexp.244function getPropType(propValue) {245  const propType = typeof propValue;246  if (Array.isArray(propValue)) {247    return 'array';248  }249  if (propValue instanceof RegExp) {250    // Old webkits (at least until Android 4.0) return 'function' rather than251    // 'object' for typeof a RegExp.252    return 'object';253  }254  return propType;255}256// This handles more types than `getPropType`, e.g. Date and regexp257function getPreciseType(propValue) {258  const propType = getPropType(propValue);259  if (propType === 'object') {260    if (propValue instanceof Date) {261      return 'date';262    } else if (propValue instanceof RegExp) {263      return 'regexp';264    }265  }266  return propType;...

mapMetaInfo.js

Source: mapMetaInfo.js

1import gridsomeConfig from '../../gridsome.config'2function getPropType(fields, type, prop) {3  return fields.social_cards.find((card) => card.type === type).content[prop]4}5export default function (fields, pageType, route) {6  const url = `${gridsomeConfig.siteUrl}${route.path}`7  const metaData = {8    title: getPropType(fields, 'general_card', 'title'),9    link: [10      {11        rel: 'canonical',12        href: url,13      },14    ],15    meta: [16      {17        property: 'og:title',18        content: getPropType(fields, 'general_card', 'title'),19      },20      {21        property: 'twitter:title',22        content: getPropType(fields, 'twitter_card', 'title'),23      },24      {25        name: 'description',26        content: getPropType(fields, 'general_card', 'description'),27      },28      {29        property: 'og:description',30        content: getPropType(fields, 'general_card', 'description'),31      },32      {33        property: 'twitter:description',34        content: getPropType(fields, 'twitter_card', 'description'),35      },36      {37        property: 'og:image',38        content: getPropType(fields, 'general_card', 'image'),39      },40      {41        property: 'twitter:image',42        content: getPropType(fields, 'twitter_card', 'image'),43      },44      {45        property: 'og:url',46        content: url,47      },48      {49        property: 'twitter:url',50        content: url,51      },52    ],53  }54  if (55    pageType === 'speaking' ||56    pageType === 'videos' ||57    pageType === 'video' ||58    pageType === 'home' ||59    pageType === 'writings'60  ) {61    metaData.meta.push({62      property: 'og:type',63      content: 'website',64    })65  }66  if (pageType === 'home') {67    metaData.script = [68      {69        innerHTML: JSON.stringify({70          '@context': 'http://schema.org',71          '@type': 'Website',72          url: 'https://timbenniks.nl',73        }),74        type: 'application/ld+json',75      },76    ]77  }78  if (pageType === 'video') {79    metaData.meta.push({80      property: 'og:video',81      content: fields.video_embed.embed_url,82    })83    metaData.meta.push({84      property: 'og:publish_date',85      content: `${fields.last_publication_date}T00:00:00`,86      name: 'publish_date',87    })88    metaData.script = [89      {90        innerHTML: JSON.stringify({91          '@context': 'http://schema.org',92          '@type': 'VideoObject',93          name: getPropType(fields, 'general_card', 'title'),94          description: getPropType(fields, 'general_card', 'description'),95          thumbnailUrl: [getPropType(fields, 'general_card', 'image')],96          embedUrl: fields.video_embed.embed_url.replace('watch?v=', 'embed/'),97          contentUrl: `${gridsomeConfig.siteUrl}/videos/${fields.id}`,98          uploadDate: `${fields.last_publication_date}T00:00:00`,99        }),100        type: 'application/ld+json',101      },102    ]103  }104  if (pageType === 'writing') {105    metaData.meta.push({106      property: 'og:type',107      content: 'article',108    })109    metaData.meta.push({110      property: 'og:publish_date',111      content: `${fields.last_publication_date}T00:00:00`,112      name: 'publish_date',113    })114    metaData.script = [115      {116        innerHTML: JSON.stringify({117          '@context': 'http://schema.org',118          '@type': 'BlogPosting',119          headline: getPropType(fields, 'general_card', 'title'),120          image: getPropType(fields, 'general_card', 'image'),121          wordcount: fields.content.split(' ').filter((n) => {122            return n != ''123          }).length,124          url: `${gridsomeConfig.siteUrl}/writings/${fields.id}`,125          datePublished: `${fields.publication_date}T00:00:00`,126          dateCreated: `${fields.publication_date}T00:00:00`,127          dateModified: fields.last_publication_date,128          description: getPropType(fields, 'general_card', 'description'),129          publisher: {130            '@type': 'Organization',131            name: 'Tim Benniks',132            logo: {133              '@type': 'ImageObject',134              url: getPropType(fields, 'general_card', 'image'),135            },136          },137          author: {138            '@type': 'Person',139            name: 'Tim Benniks',140          },141          mainEntityOfPage: {142            '@type': 'WebPage',143            '@id': `https://google.com/article`,144          },145        }),146        type: 'application/ld+json',147      },148    ]...

index.js

Source: index.js

...27        <div sx={styles.propName} data-testid="prop-name">28          {propName}29        </div>30        <div sx={styles.propType} data-testid="prop-type">31          {getPropType(prop)}32        </div>33        {prop.defaultValue && (34          <div sx={styles.defaultValue} data-testid="prop-default-value">35            <em>{getDefaultValue(prop)}</em>36          </div>37        )}38        <div sx={styles.right}>39          {prop.required && (40            <div sx={styles.propRequired} data-testid="prop-required">41              <strong>required</strong>42            </div>43          )}44          {prop.description && (45            <button...

PropTypes.js

Source: PropTypes.js

1/**2 * @module Inferno-Compat3 */4/**5 * Inlined PropTypes, there is propType checking ATM.6 */7// tslint:disable-next-line:no-empty8function proptype() { }9proptype.isRequired = proptype;10const getProptype = () => proptype;11const PropTypes = {12    any: getProptype,13    array: proptype,14    arrayOf: getProptype,15    bool: proptype,16    checkPropTypes: () => null,17    element: getProptype,18    func: proptype,19    instanceOf: getProptype,20    node: getProptype,21    number: proptype,22    object: proptype,23    objectOf: getProptype,24    oneOf: getProptype,25    oneOfType: getProptype,26    shape: getProptype,27    string: proptype,28    symbol: proptype29};...

disabled.js

Source: disabled.js

1function proptype() {}2proptype.isRequired = proptype;3const getProptype = () => proptype;4export default {5    checkPropTypes: () => null,6    array: proptype,7    bool: proptype,8    func: proptype,9    number: proptype,10    object: proptype,11    string: proptype,12    symbol: proptype,13    any: getProptype,14    arrayOf: getProptype,15    element: getProptype,16    instanceOf: getProptype,17    node: getProptype,18    objectOf: getProptype,19    oneOf: getProptype,20    oneOfType: getProptype,21    shape: getProptype,...

prop-types.js

Source: prop-types.js

1function proptype () { }2proptype.isRequired = proptype3const getProptype = () => proptype4const PropTypes = {5  element: getProptype,6  func: getProptype,7  shape: getProptype,8  instanceOf: getProptype9}...

Using AI Code Generation

1const { getPropType } = require('playwright-core/lib/server/common/JSHandle');2const { chromium } = require('playwright-core');3async function main() {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  const handle = await page.$('h1');7  const type = getPropType(handle);8  await browser.close();9}10main();11const { getPropType } = require('playwright-core/lib/server/common/JSHandle');12const { chromium } = require('playwright-core');13async function main() {14  const browser = await chromium.launch();15  const page = await browser.newPage();16  const handle = await page.$('h1');17  const type = getPropType(handle);18  await browser.close();19}20main();21const { chromium } = require('playwright-core');22async function main() {23  const browser = await chromium.launch();24  const page = await browser.newPage();25  const handle = await page.$('h1');26  const type = handle.getPropType(handle);27  console.log(type);

Using AI Code Generation

1const { getPropType } = require('playwright/lib/utils/utils.js');2const {chromium} = require('playwright');3const { expect } = require('chai');4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  const element = await page.$('text=Get started');9  const type = await getPropType(element, 'textContent');10  expect(type).to.equal('string');11  await browser.close();12})();13  ✓ should return string for textContent (336ms)141 passing (1s)15const { getPropType } = require('playwright/lib/utils/utils.js');16const {chromium} = require('playwright');17const { expect } = require('chai');18(async () => {19  const browser = await chromium.launch();20  const context = await browser.newContext();21  const page = await context.newPage();22  const element = await page.$('text=Get started');23  const type = await getPropType(element, 'disabled');24  expect(type).to.equal('boolean');25  await browser.close();26})();27  ✓ should return boolean for disabled (374ms)281 passing (1s)29const { getPropType } = require('playwright/lib/utils/utils.js');30const {chromium} = require('playwright');31const { expect } = require('chai');32(async () => {33  const browser = await chromium.launch();34  const context = await browser.newContext();35  const page = await context.newPage();36  const element = await page.$('text=Get started');37  const type = await getPropType(element, 'href');38  expect(type).to.equal('string');39  await browser.close();40})();

Using AI Code Generation

1const { getPropType } = require('playwright/lib/internal/utils/utils');2console.log(getPropType("Hello World!"));3console.log(getPropType(123));4console.log(getPropType({}));5console.log(getPropType([]));6console.log(getPropType(true));7console.log(getPropType(null));8console.log(getPropType(undefined));9console.log(getPropType(() => {}));10const { getPropType } = require('playwright/lib/internal/utils/utils');11const assert = require("assert");12assert.strictEqual(getPropType("Hello World!"), "string");13assert.strictEqual(getPropType(123), "number");14assert.strictEqual(getPropType({}), "object");15assert.strictEqual(getPropType([]), "object");16assert.strictEqual(getPropType(true), "boolean");17assert.strictEqual(getPropType(null), "object");18assert.strictEqual(getPropType(undefined), "undefined");19assert.strictEqual(getPropType(() => {}), "function");20    at Object.<anonymous> (/Users/abc/playwright-internal-library/test.js:7:10)

Using AI Code Generation

1const { getPropType } = require('playwright/lib/utils/utils');2console.log(getPropType(123));3const { getPropType } = require('playwright/lib/utils/utils');4console.log(getPropType('Hello'));5const { getPropType } = require('playwright/lib/utils/utils');6console.log(getPropType(null));7const { getPropType } = require('playwright/lib/utils/utils');8console.log(getPropType(undefined));9const { getPropType } = require('playwright/lib/utils/utils');10console.log(getPropType({}));11const { getPropType } = require('playwright/lib/utils/utils');12console.log(getPropType(function(){}));13const { getPropType } = require('playwright/lib/utils/utils');14console.log(getPropType(Symbol()));15const { getPropType } = require('playwright/lib/utils/utils');16console.log(getPropType(true));17const { getPropType } = require('playwright/lib/utils/utils');18console.log(getPropType([1,2,3]));19const { getPropType } = require('playwright/lib/utils/utils');20console.log(getPropType(new Date()));21const { getPropType } = require('playwright/lib/utils/utils');

Using AI Code Generation

1const { getPropType } = require('playwright/lib/utils/utils');2const myObject = {foo: 'bar'};3const myObjectPropType = getPropType(myObject);4const { getPropType } = require('playwright');5const myObject = {foo: 'bar'};6const myObjectPropType = getPropType(myObject);7const { getPropType } = require('playwright');8const myObject = {foo: 'bar'};9const myObjectPropType = getPropType(myObject);10const { getPropType } = require('playwright');11const myObject = {foo: 'bar'};12const myObjectPropType = getPropType(myObject);13const { getPropType } = require('playwright');14const myObject = {foo: 'bar'};15const myObjectPropType = getPropType(myObject);16const { getPropType } = require('playwright');17const myObject = {foo: 'bar'};18const myObjectPropType = getPropType(myObject);19const { getPropType } = require('playwright');20const myObject = {foo: 'bar'};21const myObjectPropType = getPropType(myObject);22const { getPropType } = require('playwright');23const myObject = {foo: 'bar'};24const myObjectPropType = getPropType(myObject);25const { getPropType } = require('playwright');26const myObject = {foo: 'bar'};

Using AI Code Generation

1const { getPropType } = require('playwright/lib/server/dom.js');2const { ElementHandle } = require('playwright');3(async () => {4    const browser = await chromium.launch();5    const context = await browser.newContext();6    const page = await context.newPage();7    const elementHandle = await page.$('input[name="q"]');8    const type = await getPropType(elementHandle, 'value');9    console.log(type);10    await browser.close();11})();

StackOverFlow community discussions

Questions

Discussion

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

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firefox browser does not start in playwright

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

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

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

Blogs

Check out the latest blogs from LambdaTest on this topic:

Introducing LambdaTest Analytics: Test Reporting Made Awesome ????

Collecting and examining data from multiple sources can be a tedious process. The digital world is constantly evolving. To stay competitive in this fast-paced environment, businesses must frequently test their products and services. While it’s easy to collect raw data from multiple sources, it’s far more complex to interpret it properly.

7 Skills of a Top Automation Tester in 2021

With new-age project development methodologies like Agile and DevOps slowly replacing the old-age waterfall model, the demand for testing is increasing in the industry. Testers are now working together with the developers and automation testing is vastly replacing manual testing in many ways. If you are new to the domain of automation testing, the organization that just hired you, will expect you to be fast, think out of the box, and able to detect bugs or deliver solutions which no one thought of. But with just basic knowledge of testing, how can you be that successful test automation engineer who is different from their predecessors? What are the skills to become a successful automation tester in 2019? Let’s find out.

Two-phase Model-based Testing

Most test automation tools just do test execution automation. Without test design involved in the whole test automation process, the test cases remain ad hoc and detect only simple bugs. This solution is just automation without real testing. In addition, test execution automation is very inefficient.

Website Testing: A Detailed Guide

Websites and web apps are growing in number day by day, and so are the expectations of people for a pleasant web experience. Even though the World Wide Web (WWW) was invented only in 1989 (32 years back), this technology has revolutionized the world we know back then. The best part is that it has made life easier for us. You no longer have to stand in long queues to pay your bills. You can get that done within a few minutes by visiting their website, web app, or mobile app.

Pair testing strategy in an Agile environment

Pair testing can help you complete your testing tasks faster and with higher quality. But who can do pair testing, and when should it be done? And what form of pair testing is best for your circumstance? Check out this blog for more information on how to conduct pair testing to optimize its benefits.

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
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.
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.
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.
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.
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.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.