How to use BrowserEventsDisconnectedTests class of PuppeteerSharp.Tests.LauncherTests package

Best Puppeteer-sharp code snippet using PuppeteerSharp.Tests.LauncherTests.BrowserEventsDisconnectedTests

BrowserEventsDisconnectedTests.cs

Source: BrowserEventsDisconnectedTests.cs Github

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...5using Xunit.Abstractions;6namespace PuppeteerSharp.Tests.LauncherTests7{8 [Collection(TestConstants.TestFixtureCollectionName)]9 public class BrowserEventsDisconnectedTests : PuppeteerBrowserBaseTest10 {11 public BrowserEventsDisconnectedTests(ITestOutputHelper output) : base(output)12 {13 }14 [PuppeteerTest("launcher.spec.ts", "Browser.Events.disconnected", "should be emitted when: browser gets closed, disconnected or underlying websocket gets closed")]15 [PuppeteerFact]16 public async Task ShouldEmittedWhenBrowserGetsClosedDisconnectedOrUnderlyingWebsocketGetsClosed()17 {18 var originalBrowser = await Puppeteer.LaunchAsync(TestConstants.DefaultBrowserOptions(), TestConstants.LoggerFactory);19 var connectOptions = new ConnectOptions { BrowserWSEndpoint = originalBrowser.WebSocketEndpoint };20 var remoteBrowser1 = await Puppeteer.ConnectAsync(connectOptions, TestConstants.LoggerFactory);21 var remoteBrowser2 = await Puppeteer.ConnectAsync(connectOptions, TestConstants.LoggerFactory);22 var disconnectedOriginal = 0;23 var disconnectedRemote1 = 0;24 var disconnectedRemote2 = 0;25 originalBrowser.Disconnected += (_, _) => ++disconnectedOriginal;...

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BrowserEventsDisconnectedTests

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1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4using PuppeteerSharp.Tests.LauncherTests;5{6 {7 static async Task Main(string[] args)8 {9 var browser = await Puppeteer.LaunchAsync(new LaunchOptions10 {11 });12 var page = await browser.NewPageAsync();13 var browserEvent = new BrowserEventsDisconnectedTests();14 await browserEvent.BrowserShouldEmitDisconnectedEventWhenBrowserIsClosed();15 }16 }17}18using PuppeteerSharp;19using System;20using System.Threading.Tasks;21using PuppeteerSharp.Tests.LauncherTests;22{23 {24 static async Task Main(string[] args)25 {26 var browser = await Puppeteer.LaunchAsync(new LaunchOptions27 {28 });29 var page = await browser.NewPageAsync();30 var browserEvent = new BrowserEventsDisconnectedTests();31 await browserEvent.BrowserShouldEmitDisconnectedEventWhenBrowserIsClosed();32 }33 }34}35using PuppeteerSharp;36using System;37using System.Threading.Tasks;38using PuppeteerSharp.Tests.LauncherTests;39{40 {41 static async Task Main(string[] args)42 {43 var browser = await Puppeteer.LaunchAsync(new LaunchOptions44 {45 });46 var page = await browser.NewPageAsync();47 var browserEvent = new BrowserEventsDisconnectedTests();48 await browserEvent.BrowserShouldEmitDisconnectedEventWhenBrowserIsClosed();49 }50 }51}52using PuppeteerSharp;53using System;54using System.Threading.Tasks;55using PuppeteerSharp.Tests.LauncherTests;56{57 {

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BrowserEventsDisconnectedTests

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 var browser = await Puppeteer.LaunchAsync(new LaunchOptions9 {10 });11 var page = await browser.NewPageAsync();

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BrowserEventsDisconnectedTests

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1using PuppeteerSharp.Tests.LauncherTests;2using System;3using System.Threading.Tasks;4{5 {6 static async Task Main(string[] args)7 {8 var browserEventsDisconnectedTests = new BrowserEventsDisconnectedTests();

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BrowserEventsDisconnectedTests

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp.Tests.LauncherTests;4{5 {6 static async Task Main(string[] args)7 {8 var tests = new BrowserEventsDisconnectedTests();9 await tests.ClosePageShouldNotReportPagesFromOtherBrowser();10 }11 }12}13using System;14using System.Threading.Tasks;15using PuppeteerSharp.Tests.LauncherTests;16{17 {18 static async Task Main(string[] args)19 {20 var tests = new BrowserEventsDisconnectedTests();21 await tests.ClosePageShouldNotReportPagesFromOtherBrowser();22 }23 }24}25using System;26using System.Threading.Tasks;27using PuppeteerSharp.Tests.LauncherTests;28{29 {30 static async Task Main(string[] args)31 {32 var tests = new BrowserEventsDisconnectedTests();33 await tests.ClosePageShouldNotReportPagesFromOtherBrowser();34 }35 }36}37using System;38using System.Threading.Tasks;39using PuppeteerSharp.Tests.LauncherTests;40{41 {42 static async Task Main(string[] args)43 {44 var tests = new BrowserEventsDisconnectedTests();45 await tests.ClosePageShouldNotReportPagesFromOtherBrowser();46 }47 }48}49using System;50using System.Threading.Tasks;51using PuppeteerSharp.Tests.LauncherTests;52{53 {54 static async Task Main(string[] args)55 {56 var tests = new BrowserEventsDisconnectedTests();57 await tests.ClosePageShouldNotReportPagesFromOtherBrowser();58 }59 }60}61using System;62using System.Threading.Tasks;

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BrowserEventsDisconnectedTests

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1using PuppeteerSharp.Tests.LauncherTests;2using System;3using System.Threading.Tasks;4{5 {6 static void Main(string[] args)7 {8 var test = new BrowserEventsDisconnectedTests();9 test.WhenBrowserIsClosedPagesAreAlsoClosedAsync().GetAwaiter().GetResult();10 }11 }12}

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BrowserEventsDisconnectedTests

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1using System;2using System.Collections.Generic;3using System.Text;4using System.Threading.Tasks;5using PuppeteerSharp.Tests;6using PuppeteerSharp.Tests.Attributes;7using Xunit;8using Xunit.Abstractions;9{10 [Collection(TestConstants.TestFixtureCollectionName)]11 {12 public BrowserEventsDisconnectedTests(ITestOutputHelper output) : base(output)13 {14 }15 [PuppeteerTest("launcher.spec.ts", "Browser.Events.Disconnected", "should not throw when the browser is closed")]16 public async Task ShouldNotThrowWhenTheBrowserIsClosed()17 {18 var browser = await Puppeteer.LaunchAsync(TestConstants.DefaultBrowserOptions());19 await browser.CloseAsync();20 }21 [PuppeteerTest("launcher.spec.ts", "Browser.Events.Disconnected", "should reject all promises when browser is closed")]22 public async Task ShouldRejectAllPromisesWhenBrowserIsClosed()23 {24 var browser = await Puppeteer.LaunchAsync(TestConstants.DefaultBrowserOptions());25 var page = await browser.NewPageAsync();26 var neverResolves = page.EvaluateFunctionHandleAsync("() => new Promise(r => {})");27 await browser.CloseAsync();28 var exception = await Assert.ThrowsAnyAsync<PuppeteerException>(() => neverResolves);29 Assert.Contains("Protocol error", exception.Message);30 }31 [PuppeteerTest("launcher.spec.ts", "Browser.Events.Disconnected", "should not be visible in browser.targets()")]32 public async Task ShouldNotBeVisibleInBrowserTargets()33 {34 var browser = await Puppeteer.LaunchAsync(TestConstants.DefaultBrowserOptions());35 var page = await browser.NewPageAsync();36 var targets = await browser.GetTargetsAsync();37 Assert.DoesNotContain(targets, t => t == page.Target);38 await browser.CloseAsync();39 }40 [PuppeteerTest("launcher.spec.ts", "Browser.Events.Disconnected", "should terminate network waiters")]41 public async Task ShouldTerminateNetworkWaiters()42 {43 var browser = await Puppeteer.LaunchAsync(TestConstants.DefaultBrowserOptions());44 var page = await browser.NewPageAsync();

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BrowserEventsDisconnectedTests

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using System.Threading;7using System.IO;8using PuppeteerSharp;9using PuppeteerSharp.Tests.LauncherTests;10{11 {12 static async Task Main(string[] args)13 {14 var browser = await Puppeteer.LaunchAsync(new LaunchOptions15 {16 Args = new string[] { "--no-sandbox" }17 });18 var page = await browser.NewPageAsync();19 await page.WaitForSelectorAsync("input[name='q']");20 await page.TypeAsync("input[name='q']", "PuppeteerSharp");21 await page.Keyboard.PressAsync("Enter");22 await page.WaitForNavigationAsync();23 await page.WaitForSelectorAsync("h3.LC20lb");24 var results = await page.QuerySelectorAllAsync("h3.LC20lb");25 await page.ScreenshotAsync("results.png");26 await page.CloseAsync();27 await browser.CloseAsync();28 }29 }30}31using System;32using System.Collections.Generic;33using System.Linq;34using System.Text;35using System.Threading.Tasks;36using System.Threading;37using System.IO;38using PuppeteerSharp;39using PuppeteerSharp.Tests.LauncherTests;40{41 {42 static async Task Main(string[] args)43 {44 var browser = await Puppeteer.LaunchAsync(new LaunchOptions45 {46 Args = new string[] { "--no-sandbox" }47 });48 var page = await browser.NewPageAsync();49 await page.WaitForSelectorAsync("input[name='q']");50 await page.TypeAsync("input[name='q']", "

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BrowserEventsDisconnectedTests

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1using NUnit.Framework;2using System;3using System.Threading.Tasks;4using PuppeteerSharp.Tests.LauncherTests;5{6 {7 public async Task TestMethod5()8 {9 await new BrowserEventsDisconnectedTests().BrowserEventsAreDisconnected();10 }11 }12}13using NUnit.Framework;14using System;15using System.Threading.Tasks;16using PuppeteerSharp.Tests.BrowserTests;17{18 {19 public async Task TestMethod6()20 {21 await new BrowserTests().CloseAsyncShouldCloseTheBrowser();22 }23 }24}25using NUnit.Framework;26using System;27using System.Threading.Tasks;28using PuppeteerSharp.Tests.BrowserTests;29{30 {31 public async Task TestMethod7()32 {33 await new BrowserTests().CloseAsyncShouldCloseTheBrowser();34 }35 }36}37using NUnit.Framework;38using System;39using System.Threading.Tasks;40using PuppeteerSharp.Tests.BrowserTests;41{42 {43 public async Task TestMethod8()44 {45 await new BrowserTests().CloseAsyncShouldCloseTheBrowser();46 }47 }48}49using NUnit.Framework;50using System;51using System.Threading.Tasks;52using PuppeteerSharp.Tests.BrowserTests;53{54 {55 public async Task TestMethod9()56 {57 await new BrowserTests().CloseAsyncShouldCloseTheBrowser();58 }59 }60}

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StackOverFlow community discussions

Questions
Discussion

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Puppeteer Sharp strange behaviour

You can close the page using CloseAsync:

var page = browser.NewPageAsync();
////
await page.CloseAsync();

An using block will also close the page:

using (var page = await new browser.PageAsync())
{
///
}

Puppeteer-Sharp v2.0.3+ also supports await using blocks

await using (var page = await new browser.PageAsync())
{
 ///
}
https://stackoverflow.com/questions/61517099/is-there-a-remove-page-method-corresponding-to-newpageasync-in-puppeteersharp

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