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How to use devtoolsComponentEmit method in Playwright Internal

Best JavaScript code snippet using playwright-internal

app.js

Source:app.js

...1386    return (component) => {1387        emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);1388    };1389}1390function devtoolsComponentEmit(component, event, params) {1391    emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);1392}1393function emit$1(instance, event, ...rawArgs) {1394    const props = instance.vnode.props || EMPTY_OBJ;1395    let args = rawArgs;1396    const isModelListener = event.startsWith('update:');1397    // for v-model update:xxx events, apply modifiers on args1398    const modelArg = isModelListener && event.slice(7);1399    if (modelArg && modelArg in props) {1400        const modifiersKey = `${modelArg === 'modelValue' ? 'model' : modelArg}Modifiers`;1401        const { number, trim } = props[modifiersKey] || EMPTY_OBJ;1402        if (trim) {1403            args = rawArgs.map(a => a.trim());1404        }1405        else if (number) {1406            args = rawArgs.map(toNumber);1407        }1408    }1409    if (__VUE_PROD_DEVTOOLS__) {1410        devtoolsComponentEmit(instance, event, args);1411    }1412    let handlerName;1413    let handler = props[(handlerName = toHandlerKey(event))] ||1414        // also try camelCase event handler (#2249)1415        props[(handlerName = toHandlerKey(camelize(event)))];1416    // for v-model update:xxx events, also trigger kebab-case equivalent1417    // for props passed via kebab-case1418    if (!handler && isModelListener) {1419        handler = props[(handlerName = toHandlerKey(hyphenate(event)))];1420    }1421    if (handler) {1422        callWithAsyncErrorHandling(handler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);1423    }1424    const onceHandler = props[handlerName + `Once`];
...

main.js

Source:main.js

...1647  return (component, type, time) => {1648    emit(hook, component.appContext.app, component.uid, component, type, time);1649  };1650}1651function devtoolsComponentEmit(component, event, params) {1652  emit("component:emit", component.appContext.app, component, event, params);1653}1654function emit$1(instance, event, ...rawArgs) {1655  const props = instance.vnode.props || EMPTY_OBJ;1656  if (true) {1657    const { emitsOptions, propsOptions: [propsOptions] } = instance;1658    if (emitsOptions) {1659      if (!(event in emitsOptions) && true) {1660        if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {1661          warn2(`Component emitted event "${event}" but it is neither declared in the emits option nor as an "${toHandlerKey(event)}" prop.`);1662        }1663      } else {1664        const validator = emitsOptions[event];1665        if (isFunction(validator)) {1666          const isValid = validator(...rawArgs);1667          if (!isValid) {1668            warn2(`Invalid event arguments: event validation failed for event "${event}".`);1669          }1670        }1671      }1672    }1673  }1674  let args = rawArgs;1675  const isModelListener2 = event.startsWith("update:");1676  const modelArg = isModelListener2 && event.slice(7);1677  if (modelArg && modelArg in props) {1678    const modifiersKey = `${modelArg === "modelValue" ? "model" : modelArg}Modifiers`;1679    const { number, trim } = props[modifiersKey] || EMPTY_OBJ;1680    if (trim) {1681      args = rawArgs.map((a) => a.trim());1682    } else if (number) {1683      args = rawArgs.map(toNumber);1684    }1685  }1686  if (true) {1687    devtoolsComponentEmit(instance, event, args);1688  }1689  if (true) {1690    const lowerCaseEvent = event.toLowerCase();1691    if (lowerCaseEvent !== event && props[toHandlerKey(lowerCaseEvent)]) {1692      warn2(`Event "${lowerCaseEvent}" is emitted in component ${formatComponentName(instance, instance.type)} but the handler is registered for "${event}". Note that HTML attributes are case-insensitive and you cannot use v-on to listen to camelCase events when using in-DOM templates. You should probably use "${hyphenate(event)}" instead of "${event}".`);1693    }1694  }1695  let handlerName;1696  let handler = props[handlerName = toHandlerKey(event)] || props[handlerName = toHandlerKey(camelize(event))];1697  if (!handler && isModelListener2) {1698    handler = props[handlerName = toHandlerKey(hyphenate(event))];1699  }1700  if (handler) {1701    callWithAsyncErrorHandling(handler, instance, 6, args);...

vue.runtime.esm.js

Source:vue.runtime.esm.js

...1181    return (component) => {1182        emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);1183    };1184}1185function devtoolsComponentEmit(component, event, params) {1186    emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);1187}1188function emit$1(instance, event, ...rawArgs) {1189    const props = instance.vnode.props || EMPTY_OBJ;1190    if ((process.env.NODE_ENV !== 'production')) {1191        const { emitsOptions, propsOptions: [propsOptions] } = instance;1192        if (emitsOptions) {1193            if (!(event in emitsOptions) &&1194                !(false )) {1195                if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {1196                    warn$1(`Component emitted event "${event}" but it is neither declared in ` +1197                        `the emits option nor as an "${toHandlerKey(event)}" prop.`);1198                }1199            }1200            else {1201                const validator = emitsOptions[event];1202                if (isFunction(validator)) {1203                    const isValid = validator(...rawArgs);1204                    if (!isValid) {1205                        warn$1(`Invalid event arguments: event validation failed for event "${event}".`);1206                    }1207                }1208            }1209        }1210    }1211    let args = rawArgs;1212    const isModelListener = event.startsWith('update:');1213    // for v-model update:xxx events, apply modifiers on args1214    const modelArg = isModelListener && event.slice(7);1215    if (modelArg && modelArg in props) {1216        const modifiersKey = `${modelArg === 'modelValue' ? 'model' : modelArg}Modifiers`;1217        const { number, trim } = props[modifiersKey] || EMPTY_OBJ;1218        if (trim) {1219            args = rawArgs.map(a => a.trim());1220        }1221        else if (number) {1222            args = rawArgs.map(toNumber);1223        }1224    }1225    if ((process.env.NODE_ENV !== 'production') || false) {1226        devtoolsComponentEmit(instance, event, args);1227    }1228    if ((process.env.NODE_ENV !== 'production')) {1229        const lowerCaseEvent = event.toLowerCase();1230        if (lowerCaseEvent !== event && props[toHandlerKey(lowerCaseEvent)]) {1231            warn$1(`Event "${lowerCaseEvent}" is emitted in component ` +1232                `${formatComponentName(instance, instance.type)} but the handler is registered for "${event}". ` +1233                `Note that HTML attributes are case-insensitive and you cannot use ` +1234                `v-on to listen to camelCase events when using in-DOM templates. ` +1235                `You should probably use "${hyphenate(event)}" instead of "${event}".`);1236        }1237    }1238    let handlerName;1239    let handler = props[(handlerName = toHandlerKey(event))] ||1240        // also try camelCase event handler (#2249)
...

vendor.js

Source:vendor.js

...1844  return cRef;1845}1846function emit(event, ...args) {1847}1848function devtoolsComponentEmit(component, event, params) {1849  emit("component:emit", component.appContext.app, component, event, params);1850}1851function emit$1(instance, event, ...rawArgs) {1852  const props = instance.vnode.props || EMPTY_OBJ;1853  {1854    const { emitsOptions, propsOptions: [propsOptions] } = instance;1855    if (emitsOptions) {1856      if (!(event in emitsOptions) && true) {1857        if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {1858          warn$1(`Component emitted event "${event}" but it is neither declared in the emits option nor as an "${toHandlerKey(event)}" prop.`);1859        }1860      } else {1861        const validator = emitsOptions[event];1862        if (isFunction(validator)) {1863          const isValid = validator(...rawArgs);1864          if (!isValid) {1865            warn$1(`Invalid event arguments: event validation failed for event "${event}".`);1866          }1867        }1868      }1869    }1870  }1871  let args = rawArgs;1872  const isModelListener = event.startsWith("update:");1873  const modelArg = isModelListener && event.slice(7);1874  if (modelArg && modelArg in props) {1875    const modifiersKey = `${modelArg === "modelValue" ? "model" : modelArg}Modifiers`;1876    const { number, trim } = props[modifiersKey] || EMPTY_OBJ;1877    if (trim) {1878      args = rawArgs.map((a) => a.trim());1879    } else if (number) {1880      args = rawArgs.map(toNumber);1881    }1882  }1883  {1884    devtoolsComponentEmit(instance, event, args);1885  }1886  {1887    const lowerCaseEvent = event.toLowerCase();1888    if (lowerCaseEvent !== event && props[toHandlerKey(lowerCaseEvent)]) {1889      warn$1(`Event "${lowerCaseEvent}" is emitted in component ${formatComponentName(instance, instance.type)} but the handler is registered for "${event}". Note that HTML attributes are case-insensitive and you cannot use v-on to listen to camelCase events when using in-DOM templates. You should probably use "${hyphenate(event)}" instead of "${event}".`);1890    }1891  }1892  let handlerName;1893  let handler = props[handlerName = toHandlerKey(event)] || props[handlerName = toHandlerKey(camelize(event))];1894  if (!handler && isModelListener) {1895    handler = props[handlerName = toHandlerKey(hyphenate(event))];1896  }1897  if (handler) {1898    callWithAsyncErrorHandling(handler, instance, 6, args);...

vue3.js

Source:vue3.js

...1713              return;1714          exports.devtools.emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined);1715      };1716  }1717  function devtoolsComponentEmit(component, event, params) {1718      if (!exports.devtools)1719          return;1720      exports.devtools.emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);1721  }1722  function emit(instance, event, ...rawArgs) {1723      const props = instance.vnode.props || EMPTY_OBJ;1724      {1725          const { emitsOptions, propsOptions: [propsOptions] } = instance;1726          if (emitsOptions) {1727              if (!(event in emitsOptions)) {1728                  if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {1729                      warn(`Component emitted event "${event}" but it is neither declared in ` +1730                          `the emits option nor as an "${toHandlerKey(event)}" prop.`);1731                  }1732              }1733              else {1734                  const validator = emitsOptions[event];1735                  if (isFunction(validator)) {1736                      const isValid = validator(...rawArgs);1737                      if (!isValid) {1738                          warn(`Invalid event arguments: event validation failed for event "${event}".`);1739                      }1740                  }1741              }1742          }1743      }1744      let args = rawArgs;1745      const isModelListener = event.startsWith('update:');1746      // for v-model update:xxx events, apply modifiers on args1747      const modelArg = isModelListener && event.slice(7);1748      if (modelArg && modelArg in props) {1749          const modifiersKey = `${modelArg === 'modelValue' ? 'model' : modelArg}Modifiers`;1750          const { number, trim } = props[modifiersKey] || EMPTY_OBJ;1751          if (trim) {1752              args = rawArgs.map(a => a.trim());1753          }1754          else if (number) {1755              args = rawArgs.map(toNumber);1756          }1757      }1758      {1759          devtoolsComponentEmit(instance, event, args);1760      }1761      {1762          const lowerCaseEvent = event.toLowerCase();1763          if (lowerCaseEvent !== event && props[toHandlerKey(lowerCaseEvent)]) {1764              warn(`Event "${lowerCaseEvent}" is emitted in component ` +1765                  `${formatComponentName(instance, instance.type)} but the handler is registered for "${event}". ` +1766                  `Note that HTML attributes are case-insensitive and you cannot use ` +1767                  `v-on to listen to camelCase events when using in-DOM templates. ` +1768                  `You should probably use "${hyphenate(event)}" instead of "${event}".`);1769          }1770      }1771      // convert handler name to camelCase. See issue #22491772      let handlerName = toHandlerKey(camelize(event));1773      let handler = props[handlerName];
...

vendor.30f85827.js

Source:vendor.30f85827.js

...1205  return (component) => {1206    emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : void 0, component);1207  };1208}1209function devtoolsComponentEmit(component, event, params) {1210  emit("component:emit", component.appContext.app, component, event, params);1211}1212function emit$1(instance, event, ...rawArgs) {1213  const props = instance.vnode.props || EMPTY_OBJ;1214  let args = rawArgs;1215  const isModelListener2 = event.startsWith("update:");1216  const modelArg = isModelListener2 && event.slice(7);1217  if (modelArg && modelArg in props) {1218    const modifiersKey = `${modelArg === "modelValue" ? "model" : modelArg}Modifiers`;1219    const { number, trim } = props[modifiersKey] || EMPTY_OBJ;1220    if (trim) {1221      args = rawArgs.map((a) => a.trim());1222    } else if (number) {1223      args = rawArgs.map(toNumber);1224    }1225  }1226  {1227    devtoolsComponentEmit(instance, event, args);1228  }1229  let handlerName;1230  let handler = props[handlerName = toHandlerKey(event)] || props[handlerName = toHandlerKey(camelize(event))];1231  if (!handler && isModelListener2) {1232    handler = props[handlerName = toHandlerKey(hyphenate(event))];1233  }1234  if (handler) {1235    callWithAsyncErrorHandling(handler, instance, 6, args);1236  }1237  const onceHandler = props[handlerName + `Once`];1238  if (onceHandler) {1239    if (!instance.emitted) {1240      instance.emitted = {};1241    } else if (instance.emitted[handlerName]) {...

note.js

Source:note.js

...1774            }1775        }1776    }1777    {1778        devtoolsComponentEmit(instance, event, args);1779    }1780    let handlerName = `on${capitalize(event)}`;1781    let handler = props[handlerName];1782    // for v-model update:xxx events, also trigger kebab-case equivalent1783    // for props passed via kebab-case1784    if (!handler && event.startsWith('update:')) {1785        handlerName = `on${capitalize(hyphenate(event))}`;1786        handler = props[handlerName];1787    }1788    if (!handler) {1789        handler = props[handlerName + `Once`];1790        if (!instance.emitted) {1791            (instance.emitted = {})[handlerName] = true;1792        }...

emit.js

Source:emit.js

...20            }21        }22    }23    {24        devtoolsComponentEmit(instance, event, args);25    }26    let handlerName = `on${capitalize(event)}`;27    let handler = props[handlerName];28    // for v-model update:xxx events, also trigger kebab-case equivalent29    // for props passed via kebab-case30    if (!handler && event.startsWith('update:')) {31        handlerName = `on${capitalize(hyphenate(event))}`;32        handler = props[handlerName];33    }34    if (!handler) {35        handler = props[handlerName + `Once`];36        if (!instance.emitted) {37            (instance.emitted = {})[handlerName] = true;38        }...

Using AI Code Generation

1const playwright = require("playwright");2(async () => {3  const browser = await playwright.chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.evaluate(() => {7    window.devtoolsComponentEmit("test", { message: "hello" });8  });9  await page.close();10  await context.close();11  await browser.close();12})();13      window.devtoolsComponentEmit = (name, data) => {14        const event = new CustomEvent(name, { detail: data });15        window.dispatchEvent(event);16      };17      window.devtoolsComponentEmit = (name, data) => {18        const event = new CustomEvent(name, { detail: data });19        window.dispatchEvent(event);20      };21const playwright = require("playwright");22(async () => {23  const browser = await playwright.chromium.launch();24  const context = await browser.newContext();25  const page = await context.newPage();26  await page.evaluate(() => {27    window.devtoolsComponentEmit("test", { message: "hello" });28  });29  await page.close();30  await context.close();31  await browser.close();32})();33      window.devtoolsComponentEmit = (name, data) => {34        const event = new CustomEvent(name, { detail: data });35        window.dispatchEvent(event);36      };

Using AI Code Generation

1const {devtoolsComponentEmit} = require('playwright');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.$('input[name="q"]');8  await devtoolsComponentEmit('input[name="q"]', 'oninput', 'test');9  await browser.close();10})();11const {chromium} = require('playwright');12(async () => {13  const browser = await chromium.launch();14  const context = await browser.newContext();15  const page = await context.newPage();16  const element = await page.$('input[name="q"]');17  await element.evaluate(element => {18    element.dispatchEvent(new Event('input', {bubbles: true}));19  });20  await browser.close();21})();22const {chromium} = require('playwright');23(async () => {24  const browser = await chromium.launch();25  const context = await browser.newContext();26  const page = await context.newPage();27  const element = await page.$('input[name="q"]');28  await element.evaluate(element => {29    element.dispatchEvent(new Event('input', {bubbles: true}));30  });31  await page.waitForSelector('input[name="btnK"]');32  await browser.close();33})();34const {chromium} = require('playwright');35(async () => {36  const browser = await chromium.launch();37  const context = await browser.newContext();38  const page = await context.newPage();39  const element = await page.$('input[name="q"]');40  await element.evaluate(element => {41    element.dispatchEvent(new Event('input', {bubbles: true}));42  });43  await page.waitForSelector('input[name="btnK"]');44  await browser.close();45})();

Using AI Code Generation

1const { devtoolsComponentEmit } = require('playwright');2devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');3devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');4devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');5devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');6devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');7devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');8devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');9devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');10devtoolsComponentEmit('devtoolsComponentEmit', 'devtoolsComponentEmit');

Using AI Code Generation

1const { test } = require('@playwright/test');2test('test', async ({ page }) => {3  await page.evaluate(() => {4    window.devtoolsComponentEmit('test', 'test', 'test');5  });6});

Using AI Code Generation

1const { chromium } = require('playwright');2const { devtoolsComponentEmit } = require('playwright/internal/inspector');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await devtoolsComponentEmit(page, 'Network.requestWillBeSent', {8    request: {9      headers: {},10    },11    initiator: {12    },13  });14  await browser.close();15})();

Using AI Code Generation

1const { devtoolsComponentEmit } = require('playwright');2devtoolsComponentEmit('my-custom-event', { data: 'some data' });3it('should listen to custom event', async ({ page }) => {4  await page.exposeBinding('onCustomEvent', (source, event) => {5  });6  await page.evaluate(() => {7    window.addEventListener('my-custom-event', event =>8      window.onCustomEvent(event)9    );10  });11});12it('should listen to custom event', async ({ page }) => {13  await page.exposeBinding('onCustomEvent', (source, event) => {14  });15  await page.evaluate(() => {16    window.addEventListener('my-custom-event', event =>17      window.onCustomEvent(event)18    );19  });20});21it('should listen to custom event', async ({ page }) => {22  await page.exposeBinding('onCustomEvent', (source, event) => {23  });24  await page.evaluate(() => {25    window.addEventListener('my-custom-event', event =>26      window.onCustomEvent(event)27    );28  });29});30it('should listen to custom event', async ({ page }) => {31  await page.exposeBinding('onCustomEvent', (source, event) => {32  });33  await page.evaluate(() => {34    window.addEventListener('my-custom-event', event =>35      window.onCustomEvent(event)36    );37  });38});39it('should listen to custom event', async ({ page }) => {40  await page.exposeBinding('onCustomEvent', (source, event) => {41  });42  await page.evaluate(() => {43    window.addEventListener('my-custom-event', event =>44      window.onCustomEvent(event)45    );46  });47});

Using AI Code Generation

1const { devtoolsComponentEmit } = require('playwright');2devtoolsComponentEmit('devtools', 'test', 'testing');3const { devtoolsComponentOn } = require('playwright');4devtoolsComponentOn('test', (params) => {5  console.log(params);6});7devtoolsComponentOn(eventName, callback)8const { devtoolsComponentEmit } = require('playwright');9devtoolsComponentEmit('devtools', 'test', 'testing');10const { devtoolsComponentOn } = require('playwright');11devtoolsComponentOn('test', (params) => {12  console.log(params);13});14devtoolsComponentEmit(componentName, eventName, params)15const { devtoolsComponentEmit } = require('playwright');16devtoolsComponentEmit('devtools', 'test', 'testing');17const { devtoolsComponentOn } = require('playwright');18devtoolsComponentOn('test', (params) => {19  console.log(params);20});21devtoolsComponentOn(eventName,

Using AI Code Generation

1const { devtoolsComponentEmit } = require('playwright-core/lib/server/frames');2const { page } = require('playwright-core/lib/server/chromium');3page.on('devtoolscomponentemit', async (event) => {4  console.log(event);5});6devtoolsComponentEmit(page, 'testEvent', {foo: 'bar'});7    window.addEventListener('testEvent', (event) => {8      console.log(event.detail);9    });

Using AI Code Generation

1import { devtoolsComponentEmit } from 'playwright-core/internal';2devtoolsComponentEmit('Component', 'event', params);3devtoolsComponentEmit('Component', 'event', params);4import { devtoolsComponentEmit } from 'playwright-core/internal';5devtoolsComponentEmit('Component', 'event', params);6devtoolsComponentEmit('Component', 'event', params);7import { devtoolsComponentEmit } from 'playwright-core/internal';8devtoolsComponentEmit('Component', 'event', params);9devtoolsComponentEmit('Component', 'event', params);10import { devtoolsComponentEmit } from 'playwright-core/internal';11devtoolsComponentEmit('Component', 'event', params);12devtoolsComponentEmit('Component', 'event', params);13import { devtoolsComponentEmit } from 'playwright-core/internal';14devtoolsComponentEmit('Component', 'event', params);15    window.addEventListener('testEvent', (event) => {16      console.log(event.detail);17    });

Using AI Code Generation

1import { devtoolsComponentEmit } from 'playwright-core/internal';2devtoolsComponentEmit('Component', 'event', params);3devtoolsComponentEmit('Component', 'event', params);4import { devtoolsComponentEmit } from 'playwright-core/internal';5devtoolsComponentEmit('Component', 'event', params);6devtoolsComponentEmit('Component', 'event', params);7import { devtoolsComponentEmit } from 'playwright-core/internal';8devtoolsComponentEmit('Component', 'event', params);9devtoolsComponentEmit('Component', 'event', params);10import { devtoolsComponentEmit } from 'playwright-core/internal';11devtoolsComponentEmit('Component', 'event', params);12devtoolsComponentEmit('Component', 'event', params);13import { devtoolsComponentEmit } from 'playwright-core/internal';14devtoolsComponentEmit('Component', 'event', params);15    });16  const browser = await chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  const element = await page.$('input[name="q"]');20  await devtoolsComponentEmit('input[name="q"]', 'oninput', 'test');21  await browser.close();22})();23const {chromium} = require('playwright');24(async () => {25  const browser = await chromium.launch();26  const context = await browser.newContext();27  const page = await context.newPage();28  const element = await page.$('input[name="q"]');29  await element.evaluate(element => {30    element.dispatchEvent(new Event('input', {bubbles: true}));31  });32  await browser.close();33})();34const {chromium} = require('playwright');35(async () => {36  const browser = await chromium.launch();37  const context = await browser.newContext();38  const page = await context.newPage();39  const element = await page.$('input[name="q"]');40  await element.evaluate(element => {41    element.dispatchEvent(new Event('input', {bubbles: true}));42  });43  await page.waitForSelector('input[name="btnK"]');44  await browser.close();45})();46const {chromium} = require('playwright');47(async () => {48  const browser = await chromium.launch();49  const context = await browser.newContext();50  const page = await context.newPage();51  const element = await page.$('input[name="q"]');52  await element.evaluate(element => {53    element.dispatchEvent(new Event('input', {bubbles: true}));54  });55  await page.waitForSelector('input[name="btnK"]');56  await browser.close();57})();

Using AI Code Generation

1const { test } = require('@playwright/test');2test('test', async ({ page }) => {3  await page.evaluate(() => {4    window.devtoolsComponentEmit('test', 'test', 'test');5  });6});

Using AI Code Generation

1import { devtoolsComponentEmit } from 'playwright-core/internal';2devtoolsComponentEmit('Component', 'event', params);3devtoolsComponentEmit('Component', 'event', params);4import { devtoolsComponentEmit } from 'playwright-core/internal';5devtoolsComponentEmit('Component', 'event', params);6devtoolsComponentEmit('Component', 'event', params);7import { devtoolsComponentEmit } from 'playwright-core/internal';8devtoolsComponentEmit('Component', 'event', params);9devtoolsComponentEmit('Component', 'event', params);10import { devtoolsComponentEmit } from 'playwright-core/internal';11devtoolsComponentEmit('Component', 'event', params);12devtoolsComponentEmit('Component', 'event', params);13import { devtoolsComponentEmit } from 'playwright-core/internal';14devtoolsComponentEmit('Component', 'event', params);

StackOverFlow community discussions

Questions

Discussion

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

firefox browser does not start in playwright

Running Playwright in Azure Function

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

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

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

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

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

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