How to use globalHandleError method in Playwright Internal

Best JavaScript code snippet using playwright-internal

core-util.js

Source:core-util.js Github

copy

Full Screen

...118 try {119 const capture = hooks[i].call(cur, err, vm, info) === false120 if (capture) return121 } catch (e) {122 globalHandleError(e, cur, 'errorCaptured hook')123 }124 }125 }126 }127 }128 globalHandleError(err, vm, info)129}130描述：用于错误处理131参数：132{Error} err catch 到的错误对象，我们可以看到 Vue 源码中是这样使用的：133try {134 ...135} catch (e) {136 handleError(e, vm, `${hook} hook`)137}138* `{any} vm` 这里应该传递 `Vue` 实例139* `{String} info` `Vue` 特定的错误提示信息140源码分析141首先迎合一下使用场景，在 Vue 的源码中 handleError 函数的使用一般如下：142try {143 handlers[i].call(vm)144} catch (e) {145 handleError(e, vm, `${hook} hook`)146}147上面是生命周期钩子回调执行时的代码，由于生命周期钩子是开发者自定义的函数，这个函数的执行是很可能存在运行时错误的，所以这里需要 try catch 包裹，且在发生错误的时候，在 catch 语句块中捕获错误，然后使用 handleError 进行错误处理。知道了这些，我们再看看 handleError 到底怎么处理的，源码上面已经贴出来了，首先是一个 if 判断：148if (vm) {149 let cur = vm150 while ((cur = cur.$parent)) {151 if (cur.$options.errorCaptured) {152 try {153 const propagate = cur.$options.errorCaptured.call(cur, err, vm, info)154 if (!propagate) return155 } catch (e) {156 globalHandleError(e, cur, 'errorCaptured hook')157 }158 }159 }160}161那这段代码是干嘛的呢？我们先不管，回头来说。我们先看后面的代码，在判断语句后面直接调用了 globalHandleError 函数，且将三个参数透传了过去：162globalHandleError(err, vm, info)163globalHandleError 函数就定义在 handleError 函数的下面，源码如下：164function globalHandleError (err, vm, info) {165 if (config.errorHandler) {166 try {167 return config.errorHandler.call(null, err, vm, info)168 } catch (e) {169 logError(e, null, 'config.errorHandler')170 }171 }172 logError(err, vm, info)173}174globalHandleError 函数首先判断 config.errorHandler 是否为真，如果为真则调用 config.errorHandler 并将参数透传，这里的 config.errorHandler 就是 Vue 全局API提供的用于自定义错误处理的配置我们前面讲过。由于这个错误处理函数也是开发者自定义的，所以可能出现运行时错误，这个时候就需要使用 try catch 语句块包裹起来，当错误发生时，使用 logError 函数打印错误，当然啦，如果没有配置 config.errorHandler 也就是说 config.errorHandler 此时为假，那么将使用默认的错误处理函数，也就是 logError 进行错误处理。175所以 globalHandleError 是用来检测你是否自定义了 config.errorHandler 的，如果有则用之，如果没有就是用 logError。176那么 logError 是什么呢？这个函数定义在 globalHandleError 函数的下面，源码如下：177function logError (err, vm, info) {178 if (process.env.NODE_ENV !== 'production') {179 warn(`Error in ${info}: "${err.toString()}"`, vm)180 }181 /* istanbul ignore else */182 if ((inBrowser || inWeex) && typeof console !== 'undefined') {183 console.error(err)184 } else {185 throw err186 }187}188可以看到，在非生产环境下，先使用 warn 函数报一个警告，然后判断是否在浏览器或者Weex环境且 console 是否可用，如果可用则使用 console.error 打印错误，没有则直接 throw err。189所以 logError 才真正打印错误的函数，且实现也比较简单。这其实已经达到了 handleError 的目的了，但是大家注意我们此时忽略了一段代码，就是 handleError 函数开头的一段代码：190if (vm) {191 let cur = vm192 while ((cur = cur.$parent)) {193 const hooks = cur.$options.errorCaptured194 if (hooks) {195 for (let i = 0; i < hooks.length; i++) {196 try {197 const capture = hooks[i].call(cur, err, vm, info) === false198 if (capture) return199 } catch (e) {200 globalHandleError(e, cur, 'errorCaptured hook')201 }202 }203 }204 }205}206那么这个 if 判断是干嘛的呢？这其实是 Vue 选项 errorCaptured 的实现。实际上我们可以这样写代码：207var vm = new Vue({208 errorCaptured: function (err, vm, info) {209 console.log(err)210 console.log(vm)211 console.log(info)212 }213})214errorCaptured 选项可以用来捕获子代组件的错误，当子组件有错误被 handleError 函数处理时，父组件可以通过该选项捕获错误。这个选项与生命周期钩子并列。215举一个例子，如下代码：216var ChildComponent = {217 template: '<div>child component</div>',218 beforeCreate: function () {219 JSON.parse("};")220 }221}222var vm = new Vue({223 components: {224 ChildComponent225 },226 errorCaptured: function (err, vm, info) {227 console.log(err)228 console.log(vm)229 console.log(info)230 }231})232上面的代码中，首先我们定义了一个子组件 ChildComponent，并且在 ChildComponent 的 beforeCreate 钩子中写了如下代码：233JSON.parse("};")234这明显会报错嘛，然后我们在父组件中使用了 errorCaptured 选项，这样是可以捕获到错误的。235接下来我们就看看 Vue 是怎么实现的，原理就在这段代码中：236if (vm) {237 let cur = vm238 while ((cur = cur.$parent)) {239 const hooks = cur.$options.errorCaptured240 if (hooks) {241 for (let i = 0; i < hooks.length; i++) {242 try {243 const capture = hooks[i].call(cur, err, vm, info) === false244 if (capture) return245 } catch (e) {246 globalHandleError(e, cur, 'errorCaptured hook')247 }248 }249 }250 }251}252首先看这个 while 循环：253while ((cur = cur.$parent))254这是一个链表遍历嘛，逐层寻找父级组件，如果父级组件使用了 errorCaptured 选项，则调用之，就怎么简单。当然啦，作为生命周期钩子，errorCaptured 选项在内部时以一个数组的形式存在的，所以需要 for 循环遍历，另外钩子执行的语句是被包裹在 try catch 语句块中的。255这里有两点需要注意：256第一、既然是逐层寻找父级，那意味着，如果一个子组件报错，那么其使用了 errorCaptured 的所有父代组件都可以捕获得到。257第二、注意这句话：258if (capture) return259其中 capture 是钩子调用的返回值与 false 的全等比较的结果，也就是说，如果 errorCaptured 钩子函数返回假，那么 capture 为真直接 return，程序不会走 if 语句块后面的 globalHandleError，否则除了 errorCaptured 被调用外，if 语句块后面的 globalHandleError 也会被调用。最总要的是：如果 errorCaptured 钩子函数返回假将阻止错误继续向“上级”传递。260lang.js 文件代码说明...

Full Screen

Full Screen

index.js

Source:index.js Github

copy

Full Screen

...14 try {15 const capture = hooks[i].call(cur, err, vm, info) === false16 if (capture) return17 } catch (e) {18 globalHandleError(e, cur, 'errorCaptured hook')19 }20 }21 }22 }23 }24 globalHandleError(err, vm, info)25}26function globalHandleError(err, vm, info) {27 if (config.errorHandler) {28 try {29 return config.errorHandler.call(null, err, vm, info)30 } catch (e) {31 logError(e, null, 'config.errorHandler')32 }33 }34 logError(err, vm, info)35}36function logError(err, vm, info) {37 if (process.env.NODE_ENV !== 'production') {38 console.log(`Error in ${info}: "${err.toString()}"`, vm)39 }40 /* istanbul ignore else */...

Full Screen

Full Screen

error.js

Source:error.js Github

copy

Full Screen

...12 try {13 const capture = hooks[i].call(cur, err, vm, info) === false14 if (capture) return15 } catch (e) {16 globalHandleError(e, cur, 'errorCaptured hook')17 }18 }19 }20 }21 }22 globalHandleError(err, vm, info)23}24function globalHandleError (err, vm, info) {25 if (config.errorHandler) {26 try {27 return config.errorHandler.call(null, err, vm, info)28 } catch (e) {29 logError(e, null, 'config.errorHandler')30 }31 }32 logError(err, vm, info)33}34function logError (err, vm, info) {35 if (process.env.NODE_ENV !== 'production') {36 warn(`Error in ${info}: "${err.toString()}"`, vm)...

Full Screen

Full Screen

Using AI Code Generation

copy

Full Screen

1const { internal } = require('playwright');2const { globalHandleError } = internal;3const { internal } = require('playwright');4const { globalHandleError } = internal;5globalHandleError('Error message', 'Error stack trace');6const { internal } = require('playwright');7const { globalHandleError } = internal;8globalHandleError('Error message', 'Error stack trace');9const { internal } = require('playwright');10const { globalHandleError } = internal;11globalHandleError('Error message', 'Error stack trace');12const { internal } = require('playwright');13const { globalHandleError } = internal;14globalHandleError('Error message', 'Error stack trace');15const { internal } = require('playwright');16const { globalHandleError } = internal;17globalHandleError('Error message', 'Error stack trace');18const { internal } = require('playwright');19const { globalHandleError } = internal;20globalHandleError('Error message', 'Error stack trace');21const { internal } = require('playwright');22const { globalHandleError } = internal;23globalHandleError('Error message', 'Error stack trace');24const { internal } = require('playwright');25const { globalHandleError } = internal;26globalHandleError('Error message', 'Error stack trace');27const { internal } = require('playwright');28const { globalHandleError } = internal;29globalHandleError('Error message', 'Error stack trace');30const { internal } = require('playwright');31const { globalHandleError }

Full Screen

Full Screen

Using AI Code Generation

copy

Full Screen

1const { globalHandleError } = require('@playwright/test/lib/utils/stackTrace');2const { InternalError } = require('@playwright/test/lib/utils/errors');3try {4} catch (error) {5 globalHandleError(new InternalError(error));6}7expect(true).toBe(false);

Full Screen

Full Screen

Using AI Code Generation

copy

Full Screen

1const { globalHandleError } = require('playwright/lib/utils/utils');2const { expect } = require('chai');3const { chromium } = require('playwright');4describe('Playwright Test', () => {5 let browser;6 let context;7 let page;8 before(async () => {9 browser = await chromium.launch();10 });11 after(async () => {12 await browser.close();13 });14 beforeEach(async () => {15 context = await browser.newContext();16 page = await context.newPage();17 });18 afterEach(async () => {19 await page.close();20 await context.close();21 });22 it('should throw error', async () => {23 await page.click('text=Register');24 await page.click('text=Register');25 });26});

Full Screen

Full Screen

Using AI Code Generation

copy

Full Screen

1const { InternalError } = require('playwright/lib/server/errors');2InternalError.globalHandleError = function (error) {3 console.log('Global Error Handler');4 console.log(error);5};6const { InternalError } = require('playwright/lib/server/errors');7InternalError.globalHandleError = function (error) {8 console.log('Global Error Handler');9 console.log(error);10};11const { InternalError } = require('playwright/lib/server/errors');12InternalError.globalHandleError = function (error) {13 console.log('Global Error Handler');14 console.log(error);15};16const { InternalError } = require('playwright/lib/server/errors');17InternalError.globalHandleError = function (error) {18 console.log('Global Error Handler');19 console.log(error);20};21const { InternalError } = require('playwright/lib/server/errors');22InternalError.globalHandleError = function (error) {23 console.log('Global Error Handler');24 console.log(error);25};26const { InternalError } = require('playwright/lib/server/errors');27InternalError.globalHandleError = function (error) {28 console.log('Global Error Handler');29 console.log(error);30};31const { InternalError } = require('playwright/lib/server/errors');32InternalError.globalHandleError = function (error) {33 console.log('Global Error Handler');34 console.log(error);35};36const { InternalError } = require('playwright/lib/server/errors');37InternalError.globalHandleError = function (error) {38 console.log('Global Error Handler');39 console.log(error);40};41const { InternalError } = require('playwright/lib/server/errors');42InternalError.globalHandleError = function (error) {43 console.log('Global Error Handler');44 console.log(error);45};46const { InternalError } = require('playwright

Full Screen

Full Screen

Using AI Code Generation

copy

Full Screen

1const { globalHandleError } = require('playwright-core/lib/helper');2const { chromium } = require('playwright-core');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 await page.evaluate(() => {7 throw new Error('oops');8 });9 await browser.close();10 globalHandleError(new Error('oops'));11})();12 at ExecutionContext._evaluateInternal (C:\Users\username\playwright\playwright\lib\server\chromium\chromium.js:1026:19)13 at processTicksAndRejections (internal/process/task_queues.js:93:5)14 at async ExecutionContext.evaluate (C:\Users\username\playwright\playwright\lib\server\chromium\chromium.js:1017:16)15const { globalHandleError } = require('playwright-core/lib/helper');16const { chromium } = require('playwright-core');17(async () => {18 const browser = await chromium.launch();19 const page = await browser.newPage();20 try {21 await page.evaluate(() => {22 throw new Error('oops');23 });24 } catch (error) {25 console.log(error);26 }27 await browser.close();

Full Screen

Full Screen

Using AI Code Generation

copy

Full Screen

1const { InternalError } = require('playwright/lib/server/errors');2InternalError.globalHandleError = function (error) {3 console.log('Error handled globally');4};5const { TimeoutError } = require('playwright/lib/server/errors');6TimeoutError.globalHandleError = function (error) {7 console.log('TimeoutError handled globally');8};9const { Error } = require('playwright/lib/server/errors');10Error.globalHandleError = function (error) {11 console.log('Error handled globally');12};13const { Error } = require('playwright/lib/server/errors');14Error.globalHandleError = function (error) {15 console.log('Error handled globally');16};17const { TimeoutError } = require('playwright/lib/server/errors');18TimeoutError.globalHandleError = function (error) {19 console.log('TimeoutError handled globally');20};21const { Error } = require('playwright/lib/server/errors');22Error.globalHandleError = function (error) {23 console.log('Error handled globally');24};25const { InternalError } = require('playwright/lib/server/errors');26InternalError.globalHandleError = function (error) {27 console.log('Error handled globally');28};29const { TimeoutError } = require('playwright/lib/server/errors');30TimeoutError.globalHandleError = function (error) {31 console.log('TimeoutError handled globally');32};33const { Error } = require('playwright/lib/server/errors');34Error.globalHandleError = function (error) {35 console.log('Error handled globally');36};37const { Error } = require('playwright/lib/server/errors');38Error.globalHandleError = function (error) {39 console.log('Error handled globally');40};41const { TimeoutError } = require('playwright/lib/server

Full Screen

Full Screen

Using AI Code Generation

copy

Full Screen

1const { globalHandleError } = require(“@playwright/test”);2const { globalHandleError } = require(“@playwright/test”);3const { globalHandleError } = require(“@playwright/test”);4const { globalHandleError } = require(“@playwright/test”);5const { globalHandleError } = require(“@playwright/test”);6const { globalHandleError } = require(“@playwright/test”);7const { globalHandleError } = require(“@playwright/test”);8const { globalHandleError } = require(“@playwright/test”);9const { globalHandleError } = require(“@playwright/test”);10const { globalHandleError } = require(“@playwright/test”);11const { globalHandleError } = require(“@playwright/test”);12const { globalHandleError } = require(“@playwright/test”);13const { globalHandleError } = require(“@playwright/test”);14const { globalHandleError } = require(“@playwright/test”);

Full Screen

Full Screen

Using AI Code Generation

copy

Full Screen

1const { Playwright } = require('@playwright/test');2Playwright._require('internal').globalHandleError = (error) => {3 console.log("Global Error Handler");4 console.log(error);5}6const { test } = require('@playwright/test');7test.use({8 globalHandleError: (error) => {9 console.log("Global Error Handler");10 console.log(error);11 }12});13const { Runner } = require('@playwright/test');14Runner.use({15 globalHandleError: (error) => {16 console.log("Global Error Handler");17 console.log(error);18 }19});20const { Reporter } = require('@playwright/test');21Reporter.use({22 globalHandleError: (error) => {23 console.log("Global Error Handler");24 console.log(error);25 }26});27const { TestRunner } = require('@playwright/test');28TestRunner.use({29 globalHandleError: (error) => {30 console.log("Global Error Handler");31 console.log(error);32 }33});34const { ReporterRunner } = require('@playwright/test');35ReporterRunner.use({36 globalHandleError: (error) => {37 console.log("Global Error Handler");38 console.log(error);39 }40});41const { TestReporter } = require('@playwright/test');42TestReporter.use({43 globalHandleError: (error) => {44 console.log("Global Error Handler");45 console.log(error);46 }47});48const { TestReporterRunner } = require('@playwright/test');49TestReporterRunner.use({50 globalHandleError: (error) => {51 console.log("Global Error Handler");52 console.log(error);53 }54});55const { TestReporterRunner } = require('@playwright/test');56TestReporterRunner.use({57 globalHandleError: (error) => {58 console.log("Global Error Handler");59 console.log(error);60 }61});

Full Screen

Full Screen

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:

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.

Run Playwright Internal automation tests on LambdaTest cloud grid

Perform automation testing on 3000+ real desktop and mobile devices online.

... View sample repo... View DocumentationSign up Free
›
_

Try LambdaTest Now !!

Get 100 minutes of automation test minutes FREE!!

...
Sign up with GoogleSign up with Email
Next-Gen App & Browser Testing Cloud

Was this article helpful?

Helpful

NotHelpful