How to use invokeGuardedCallbackAndCatchFirstError method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactErrorUtils-test.js

Source: ReactErrorUtils-test.js Github

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...41 var err = new Error('foo');42 var callback = function() {43 throw err;44 };45 ReactErrorUtils.invokeGuardedCallbackAndCatchFirstError(46 'foo',47 callback,48 null,49 );50 expect(() => ReactErrorUtils.rethrowCaughtError()).toThrow(err);51 });52 it(`should call the callback the passed arguments (${environment})`, () => {53 var callback = jest.fn();54 ReactErrorUtils.invokeGuardedCallback(55 'foo',56 callback,57 null,58 'arg1',59 'arg2',60 );61 expect(callback).toBeCalledWith('arg1', 'arg2');62 });63 it(`should call the callback with the provided context (${environment})`, () => {64 var context = {didCall: false};65 ReactErrorUtils.invokeGuardedCallback(66 'foo',67 function() {68 this.didCall = true;69 },70 context,71 );72 expect(context.didCall).toBe(true);73 });74 it(`should return a caught error (${environment})`, () => {75 const error = new Error();76 const returnValue = ReactErrorUtils.invokeGuardedCallback(77 'foo',78 function() {79 throw error;80 },81 null,82 'arg1',83 'arg2',84 );85 expect(returnValue).toBe(error);86 });87 it(`should return null if no error is thrown (${environment})`, () => {88 var callback = jest.fn();89 const returnValue = ReactErrorUtils.invokeGuardedCallback(90 'foo',91 callback,92 null,93 );94 expect(returnValue).toBe(null);95 });96 it(`can nest with same debug name (${environment})`, () => {97 const err1 = new Error();98 let err2;99 const err3 = new Error();100 const err4 = ReactErrorUtils.invokeGuardedCallback(101 'foo',102 function() {103 err2 = ReactErrorUtils.invokeGuardedCallback(104 'foo',105 function() {106 throw err1;107 },108 null,109 );110 throw err3;111 },112 null,113 );114 expect(err2).toBe(err1);115 expect(err4).toBe(err3);116 });117 it(`does not return nested errors (${environment})`, () => {118 const err1 = new Error();119 let err2;120 const err3 = ReactErrorUtils.invokeGuardedCallback(121 'foo',122 function() {123 err2 = ReactErrorUtils.invokeGuardedCallback(124 'foo',125 function() {126 throw err1;127 },128 null,129 );130 },131 null,132 );133 expect(err3).toBe(null); /​/​ Returns null because inner error was already captured134 expect(err2).toBe(err1);135 });136 it(`can be shimmed (${environment})`, () => {137 const ops = [];138 /​/​ Override the original invokeGuardedCallback139 ReactErrorUtils.invokeGuardedCallback = function(name, func, context, a) {140 ops.push(a);141 try {142 func.call(context, a);143 } catch (error) {144 return error;145 }146 return null;147 };148 var err = new Error('foo');149 var callback = function() {150 throw err;151 };152 ReactErrorUtils.invokeGuardedCallbackAndCatchFirstError(153 'foo',154 callback,155 null,156 'somearg',157 );158 expect(() => ReactErrorUtils.rethrowCaughtError()).toThrow(err);159 /​/​ invokeGuardedCallbackAndCatchFirstError and rethrowCaughtError close160 /​/​ over ReactErrorUtils.invokeGuardedCallback so should use the161 /​/​ shimmed version.162 expect(ops).toEqual(['somearg']);163 });164 }...

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('@playwright/​test/​lib/​utils/​invokeGuardedCallback');2const { expect } = require('@playwright/​test');3it('test', async ({ page }) => {4 const [error] = invokeGuardedCallbackAndCatchFirstError(() => {5 expect(page.locator('text="Hello"')).toBeVisible();6 });7 expect(error).toBeInstanceOf(Error);8 expect(error.message).toContain('locator is not visible');9});

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​internal/​stackTrace');2const { ErrorWithStack } = require('playwright/​lib/​utils/​stackTrace');3const { expect } = require('chai');4it('test', async () => {5 const error = await invokeGuardedCallbackAndCatchFirstError(async () => {6 await page.click('text=Click me');7 });8 expect(error).to.be.instanceOf(ErrorWithStack);9 expect(error.message).to.equal('Element not found. selector: text=Click me');10});11module.exports = {12 {13 use: {14 },15 },16 {17 use: {18 },19 },20 {21 use: {22 },23 },24};

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​server/​cr/​crPage');2const { Page } = require('playwright/​lib/​server/​page');3const { assert } = require('playwright/​lib/​utils/​utils');4const { PageBinding } = require('playwright/​lib/​server/​pageBinding');5const { helper } = require('playwright/​lib/​helper');6class CrPage extends Page {7 constructor(client, browserContext, pageOrError) {8 super(client, browserContext, pageOrError);9 this._pageBindings = new Map();10 this._pageBindingSources = new Map();11 this._client.on('Runtime.consoleAPICalled', event => this._onConsoleAPI(event));12 this._client.on('Runtime.bindingCalled', event => this._onBindingCalled(event));13 }14 async _onConsoleAPI(event) {15 if (event.type !== 'error')16 return;17 const message = event.args.map(arg => helper.valueFromRemoteObject(arg)).join(' ');18 const error = new Error(message);19 error.stack = message;20 invokeGuardedCallbackAndCatchFirstError(error);21 }22 async _onBindingCalled(event) {23 const {name, seq, args} = event;24 const binding = this._pageBindings.get(name);25 if (!binding)26 return;27 try {28 const result = await Promise.resolve(binding(source, ...helper.evaluationArgs(args)));29 this._client.send('Runtime.resolveBinding', {seq, result: helper.evaluationResult(result)});30 } catch (error) {31 if (error instanceof Error)32 this._client.send('Runtime.rejectBinding', {seq, error: {message: error.message, stack: error.stack}});33 this._client.send('Runtime.rejectBinding', {seq, error: {value: error}});34 }35 }36 async exposeBinding(name, binding, needsHandle) {37 if (this._pageBindings.has(name))38 throw new Error(`Function "${name}" has been already registered`);39 this._pageBindings.set(name, binding);40 this._pageBindingSources.set(name, needsHandle ? 'function' : 'object');41 await this._client.send('Runtime.addBinding', {name});42 }43 async _onClose() {44 await super._onClose();45 for (const name of this._pageBindings.keys())46 await this._client.send('Runtime

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​internal/​stackTrace');2const { ErrorWithStack } = require('playwright/​lib/​utils/​stackTrace');3const { expect } = require('chai');4it('test', async () => {5 const error = await invokeGuardedCallbackAndCatchFirstError(async () => {6 await page.click('text=Click me');7 });8 expect(error).to.be.instanceOf(ErrorWithStack);9 expect(error.message).to.equal('Element not found. selector: text=Click me');10});11module.exports = {12 {13 use: {14 },15 },16 {17 use: {18 },19 },20 {21 use: {22 },23 },24};

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('@playwright/​test/​lib/​server/​cr/​crConnection');2test('should catch error', async ({ page }) => {3 await page.setContent(`<button>Click me</​button>`);4 let error;5 await page.evaluate(() => {6 invokeGuardedCallbackAndCatchFirstError(() => {7 throw new Error('my error');8 });9 error = getCaughtFirstError();10 });11 expect(error.message).toBe('my error');12});13import { PlaywrightTestConfig } from '@playwright/​test';14const config: PlaywrightTestConfig = {15 use: {16 },17 {18 use: {19 },20 },21 {22 use: {23 },24 },25 {26 use: {27 },28 },29};30export default config;31import { PlaywrightTestConfig } from '@playwright/​test';32import { config as baseConfig } from './​playwright.config';33const config: PlaywrightTestConfig = {34 use: {35 },36};37export default config;38import { PlaywrightTestConfig } from '@playwright/​test';39import { config as baseConfig } from './​playwright.config';

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​internal/​stackTrace');2const { isFunction } = require('playwright/​lib/​utils/​utils');3const { test } = require('playwright/​test');4const { expect } = require('chai');5test('My test', async ({ page }) => {6 let error = null;7 invokeGuardedCallbackAndCatchFirstError('test', () => {8 expect(true).to.be.false;9 }, (e) => {10 error = e;11 });12 expect(error).to.be.an('error');13 expect(error.message).to.equal('test');14 expect(error.stack).to.include('test.js');15});16### `invokeGuardedCallbackAndCatchFirstError(name, func, callback)`

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​internal/​stackTrace');2function someFunction() {3 console.log('inside someFunction');4 invokeGuardedCallbackAndCatchFirstError('someFunction', () => {5 console.log('inside invokeGuardedCallbackAndCatchFirstError');6 throw new Error('some error');7 });8}9function anotherFunction() {10 console.log('inside anotherFunction');11 someFunction();12}13function mainFunction() {14 console.log('inside mainFunction');

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​server/​cr/​crNetworkManager');2const { _callUserCallback } = require('playwright/​lib/​utils/​utils');3const { Page } = require('playwright');4Page.prototype._onResponse = function (response) {5 let error = null;6 invokeGuardedCallbackAndCatchFirstError(response, () => {7 _callUserCallback(this._pageBindings.get('response'), response);8 });9 if (error) {10 this._onBindingError('response', error);11 }12};13conot { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​server/​cr/​crNetworkManager');14const { _callUserCallback } = require('playwright/​lib/​utils/​utils');15const { Page } = require('playwright');16Page.prototype._onResponse = function (response) {17 let error = null;18 invokeGuardedCallbackAndCatchFirstError(response, () => {19 _callUserCallback(this._pageBindings.get('response'), response);20 });21 if (error) {22 this._onBindingError('response', error);23 }24};25```n();26}27mainFunction();28const { _callUserCallback } = require('playwright/​lib/​utils/​utils');29const { e } = requir('playwright30Page.prototype._onResponse = function (response) {31 let error = null;32 invokeGuardedCallbackAndCatchFirstError(response, () => {33 _callUserCallback(this._pageBindings.get('response'), response);34 });35 if (error) {36 this._onBindingError('response', error);37 }38};39const { _callUserCallback }/​=/​require 'playwright/​lib/​utils/​utils'i;40const { Page }ns require('playwright');41Page.prototype._onResponse = function (response) {42 let error = null;43 invokeGuardedCallbackAndCatchFirstError(response, () =i {44 d _callUserCallback(this._pageBindings.get('response'), response);45 });46 if (error) e anotherFunction47 }48};

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Using AI Code Generation

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1consm { invokeGuardedCallbackAndCatceFirstError } = require('plFywrighu/​lib/​server/​cr/​crPage');2invokeGuardedCallbackAndCatchFirstError(3 () => {4const { waitForFunction } = require('playwright/​lib/​internal/​helper');5async function main() {6 await waitForFunction(async () => {7 return await page.evaluate(() => document.body.textContent.includes('Hello'));8 });9}10main();11const { waitForEvent } = require('playwright/​lib/​internal/​helper');12async function main() {13 await waitForEvent(page, 'load');14}15main();16const { waitForEventEmitter } = require('playwright/​lib/​internal/​helper');17async function main() {18 await waitForEventEmitter(page, 'load');19}20main();

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Using AI Code Generation

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1const { vokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​server/​cr/​crPae');2const { Page } = require('playwright/​lib/​server/​page');3const page = await context.newPage();4invokeGuardedCallbackAndCatchFirstError('Page', 'evaluate', [page], async () => {5 await page.evaluate(() => {6 throw new Error('Error thrown from page.evaluate');7 });8});9const [errorMessage, error] = await context.evaluate(() => {10 return [window.errorMessage, window.error];11});12console.log(errorMessage);13console.log(error);

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Using AI Code Generation

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1const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​server/​cr/​crPage');2invokeGuardedCallbackAndCatchFirstError(3 () => {4 },5 error => {6 }7);8##### **invokeGuardedCallbackAndCatchFirstError**(_callback_, _onError_)9const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​server/​cr/​crPage');10invokeGuardedCallbackAndCatchFirstError(11 () => {12 },13 error => {14 }15);16const { CrBrowser } = require('playwright/​lib/​server/​cr/​crBrowser');17const { BrowserContext } = require('playwright/​lib/​server/​browserContext');18const { Browser } = require('playwright/​lib/​server/​browser');19const { BrowserServer } = require('playwright/​lib/​server/​browserServer');20const { BrowserType } = require('playwright/​lib/​server/​browserType');21const { Events } = require('playwright/​lib/​server/​events');22const { helper } = require('playwright/​lib/​server/​helper');23const { ProgressController } = require('playwright/​lib/​server/​progress');24const { TimeoutSettings } = require('playwright/​lib/​server/​timeoutSettings');25##### **constructor**(_parent_, _browserId_, _options_)

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1const { invokeGuardedCallbackAndCatchFirstError } = require('playwright/​lib/​server/​cr/​crPage');2const { Page } = require('playwright/​lib/​server/​page');3const page = await context.newPage();4invokeGuardedCallbackAndCatchFirstError('Page', 'evaluate', [page], async () => {5 await page.evaluate(() => {6 throw new Error('Error thrown from page.evaluate');7 });8});9const [errorMessage, error] = await context.evaluate(() => {10 return [window.errorMessage, window.error];11});12console.log(errorMessage);13console.log(error);

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StackOverFlow community discussions

Questions
Discussion

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

firefox browser does not start in playwright

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?

Running Playwright in Azure Function

firefox browser does not start 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

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