How to use ShouldImmediatelyResolveTaskIfNodeExists method of PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists

FrameWaitForSelectorTests.cs

Source: FrameWaitForSelectorTests.cs Github

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...14 {15 }16 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should immediately resolve promise if node exists")]17 [PuppeteerFact]18 public async Task ShouldImmediatelyResolveTaskIfNodeExists()19 {20 await Page.GoToAsync(TestConstants.EmptyPage);21 var frame = Page.MainFrame;22 await frame.WaitForSelectorAsync("*");23 await frame.EvaluateFunctionAsync(AddElement, "div");24 await frame.WaitForSelectorAsync("div");25 }26 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should work with removed MutationObserver")]27 [SkipBrowserFact(skipFirefox: true)]28 public async Task ShouldWorkWithRemovedMutationObserver()29 {30 await Page.EvaluateExpressionAsync("delete window.MutationObserver");31 var waitForSelector = Page.WaitForSelectorAsync(".zombo");32 await Task.WhenAll(...

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ShouldImmediatelyResolveTaskIfNodeExists

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1{2 [Collection("PuppeteerLoaderFixture collection")]3 {4 public async Task ShouldImmediatelyResolveTaskIfNodeExists()5 {6 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");7 await Page.EvaluateExpressionAsync("() => {document.querySelector('body').appendChild(document.createElement('div'));}");8 var frame = Page.MainFrame;9 var waitTask = frame.WaitForSelectorAsync("div");10 Assert.True(waitTask.IsCompleted);11 Assert.NotNull(waitTask.Result);12 }13 }14}15{16 [Collection("PuppeteerLoaderFixture collection")]17 {18 public async Task ShouldImmediatelyResolveTaskIfNodeExists()19 {20 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");21 await Page.EvaluateExpressionAsync("() => {document.querySelector('body').appendChild(document.createElement('div'));}");22 var frame = Page.MainFrame;23 Assert.True(waitTask.IsCompleted);24 Assert.NotNull(waitTask.Result);25 }26 }27}28{29 [Collection("PuppeteerLoaderFixture collection")]30 {31 public async Task ShouldImmediatelyResolveTaskIfNodeExists()32 {33 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");34 var waitTask = Page.WaitForFunctionAsync("() => true");35 Assert.True(waitTask.IsCompleted);36 Assert.NotNull(waitTask.Result);37 }38 }39}40{41 [Collection("PuppeteerLoaderFixture collection")]

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ShouldImmediatelyResolveTaskIfNodeExists

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1using System;2using System.Collections.Generic;3using System.Text;4using System.Threading.Tasks;5using Xunit;6using Xunit.Abstractions;7{8 [Collection(TestConstants.TestFixtureCollectionName)]9 {10 public ShouldImmediatelyResolveTaskIfNodeExists(ITestOutputHelper output) : base(output)11 {12 }13 public async Task ShouldImmediatelyResolveTaskIfNodeExists()14 {15 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");16 await Page.EvalOnSelectorAsync("body", "body => body.innerHTML = '<div class=\"second\"></​div>'");17 var handle = await Page.WaitForSelectorAsync(".second");18 Assert.NotNull(handle);19 }20 }21}22using System;23using System.Collections.Generic;24using System.Text;25using System.Threading.Tasks;26using Xunit;27using Xunit.Abstractions;28{29 [Collection(TestConstants.TestFixtureCollectionName)]30 {31 public ShouldImmediatelyResolveTaskIfNodeExists(ITestOutputHelper output) : base(output)32 {33 }34 public async Task ShouldImmediatelyResolveTaskIfNodeExists()35 {36 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");37 await Page.EvalOnSelectorAsync("body", "body => body.innerHTML = '<div class=\"second\"></​div>'");38 Assert.NotNull(handle);39 }40 }41}42using System;43using System.Collections.Generic;44using System.Text;45using System.Threading.Tasks;46using Xunit;47using Xunit.Abstractions;48{49 [Collection(TestConstants.TestFixtureCollectionName)]50 {51 public ShouldImmediatelyResolveTaskIfNodeExists(IT

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ShouldImmediatelyResolveTaskIfNodeExists

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1PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()2PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForXPathTests.ShouldImmediatelyResolveTaskIfNodeExists()3PuppeteerSharp.Tests.WaitTaskTests.PageWaitForXPathTests.ShouldImmediatelyResolveTaskIfNodeExists()4PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldNotResolveTaskIfNodeIsRemoved()5PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForXPathTests.ShouldNotResolveTaskIfNodeIsRemoved()6PuppeteerSharp.Tests.WaitTaskTests.PageWaitForXPathTests.ShouldNotResolveTaskIfNodeIsRemoved()7PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldResolveTaskIfNodeIsAdded()8PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForXPathTests.ShouldResolveTaskIfNodeIsAdded()9PuppeteerSharp.Tests.WaitTaskTests.PageWaitForXPathTests.ShouldResolveTaskIfNodeIsAdded()

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ShouldImmediatelyResolveTaskIfNodeExists

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Xunit;7using Xunit.Abstractions;8{9 [Collection("PuppeteerLoaderFixture collection")]10 {11 public FrameWaitForSelectorTests(ITestOutputHelper output) : base(output)12 {13 }14 public async Task ShouldImmediatelyResolveTaskIfNodeExists()15 {16 var frame = await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");17 await frame.EvaluateExpressionAsync("() => { window['node'] = document.createElement('div'); document.body.appendChild(window['node']); }");18 var waitTask = frame.WaitForSelectorAsync("div");19 Assert.True(waitTask.IsCompleted);20 var element = await waitTask;21 Assert.Equal("DIV", element.TagName);22 }23 }24}25using System;26using System.Collections.Generic;27using System.Linq;28using System.Text;29using System.Threading.Tasks;30using Xunit;31using Xunit.Abstractions;32{33 [Collection("PuppeteerLoaderFixture collection")]34 {35 public FrameWaitForXPathTests(ITestOutputHelper output) : base(output)36 {37 }38 public async Task ShouldImmediatelyResolveTaskIfNodeExists()39 {40 var frame = await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");41 await frame.EvaluateExpressionAsync("() => { window['node'] = document.createElement('div'); document.body.appendChild(window['node']); }");42 Assert.True(waitTask.IsCompleted);43 var element = await waitTask;44 Assert.Equal("DIV", element.TagName);45 }46 }47}48using System;49using System.Collections.Generic;50using System.Linq;51using System.Text;

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ShouldImmediatelyResolveTaskIfNodeExists

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1PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()2PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()3PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()4PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()5PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()6PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()7PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()8PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()9PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()

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ShouldImmediatelyResolveTaskIfNodeExists

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1var puppeteer = new PuppeteerSharp . Puppeteer ( ) ; 2 var browser = await puppeteer . LaunchAsync ( ) ; 3 var page = await browser . NewPageAsync ( ) ; 4 var frame = await page . WaitForSelectorAsync ( "iframe" ) ; 5 var childFrame = await frame . WaitForSelectorAsync ( "iframe" ) ; 6 var element = await childFrame . WaitForSelectorAsync ( "h1" ) ; 7 var text = await element . EvaluateFunctionAsync < string > ( "element => element.textContent" ) ; 8 Assert . AreEqual ( "Example Domain" , text ) ;9 PuppeteerSharp.PuppeteerException : Protocol error (Runtime.callFunctionOn): Cannot find context with specified id10 D:\PuppeteerSharp\lib\PuppeteerSharp\Frame.cs(107,0): at PuppeteerSharp.Frame.EvaluateFunctionHandleAsync(String pageFunction, Object[] args)11 D:\PuppeteerSharp\lib\PuppeteerSharp\Frame.cs(89,0): at PuppeteerSharp.Frame.EvaluateFunctionAsync[T](String pageFunction, Object[] args)12 D:\PuppeteerSharp\lib\PuppeteerSharp\Frame.cs(82,0): at PuppeteerSharp.Frame.WaitForSelectorAsync(String selector, WaitForSelectorOptions options)13 D:\PuppeteerSharp\test\PuppeteerSharp.Tests\WaitTaskTests\FrameWaitForSelectorTests.cs(23,0): at PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForSelectorTests.ShouldImmediatelyResolveTaskIfNodeExists()14I am able to run the test successfully if I remove the childFrame.WaitForSelectorAsync("iframe") line. I am also able to run the test successfully if I

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ShouldImmediatelyResolveTaskIfNodeExists

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp.Tests.Attributes;7using Xunit;8using Xunit.Abstractions;9{10 [Collection(TestConstants.TestFixtureCollectionName)]11 {12 public FrameWaitForSelectorTests(ITestOutputHelper output) : base(output)13 {14 }15 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should immediately resolve task if node exists")]16 public async Task ShouldImmediatelyResolveTaskIfNodeExists()17 {18 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");19 var frame = Page.MainFrame;20 var watchdog = frame.WaitForSelectorAsync("div");21 Assert.True(watchdog.IsCompleted);22 Assert.NotNull(await watchdog);23 }24 }25}26using System;27using System.Collections.Generic;28using System.Linq;29using System.Text;30using System.Threading.Tasks;31using PuppeteerSharp.Tests.Attributes;32using Xunit;33using Xunit.Abstractions;34{35 [Collection(TestConstants.TestFixtureCollectionName)]36 {37 public PageWaitForSelectorTests(ITestOutputHelper output) : base(output)38 {39 }40 [PuppeteerTest("waittask.spec.ts", "Page.waitForSelector", "should immediately resolve task if node exists")]41 public async Task ShouldImmediatelyResolveTaskIfNodeExists()42 {43 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");44 var watchdog = Page.WaitForSelectorAsync("div");45 Assert.True(watchdog.IsCompleted);46 Assert.NotNull(await watchdog);47 }48 }49}

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ShouldImmediatelyResolveTaskIfNodeExists

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1var puppeteer = new PuppeteerSharp.Puppeteer();2 var browser = await puppeteer.LaunchAsync(new LaunchOptions { Headless = false });3 var page = await browser.NewPageAsync();4 var frame = page.MainFrame;5 var waitTask = frame.WaitForSelectorAsync( "body" );6 var mainFrame = page.MainFrame;7 var task = mainFrame.WaitForSelectorAsync( "body" );8task.Wait();9 var element = await task;10 var element2 = await waitTask;11var puppeteer = new PuppeteerSharp.Puppeteer();12 var browser = await puppeteer.LaunchAsync(new LaunchOptions { Headless = false });13 var page = await browser.NewPageAsync();14 var frame = page.MainFrame;15 var waitTask = frame.WaitForXPathAsync( "body" );16 var mainFrame = page.MainFrame;17 var task = mainFrame.WaitForXPathAsync( "body" );18task.Wait();19 var element = await task;20 var element2 = await waitTask;21var puppeteer = new PuppeteerSharp.Puppeteer();22 var browser = await puppeteer.LaunchAsync(new LaunchOptions { Headless = false });23 var page = await browser.NewPageAsync();24 var frame = page.MainFrame;25 var waitTask = frame.WaitForXPathAsync( "body" );26 var mainFrame = page.MainFrame;27 var task = mainFrame.WaitForXPathAsync( "body" );28task.Wait();29 var element = await task;30 var element2 = await waitTask;31var puppeteer = new PuppeteerSharp.Puppeteer();

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ShouldImmediatelyResolveTaskIfNodeExists

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1using PuppeteerSharp.Tests;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8 {9 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should immediately resolve task if node exists")]10 public async Task ShouldImmediatelyResolveTaskIfNodeExists()11 {12 await Page.GoToAsync(TestConstants.ServerUrl + "/​static/​css.html");13 await Page.AddStyleTagAsync(new AddTagOptions { Content = "div { display: none; }" });14 var waitForSelectorTask = Page.WaitForSelectorAsync("div");15 await Page.EvaluateExpressionAsync("() => delete window['Node']");16 var e = await Assert.ThrowsAsync<PuppeteerException>(async () => await waitForSelectorTask);17 Assert.Contains("Node is not defined", e.Message);18 }19 }20}21using PuppeteerSharp.Tests;22using System;23using System.Collections.Generic;24using System.Linq;25using System.Text;26using System.Threading.Tasks;27{28 {29 [PuppeteerTest("waittask.spec.ts", "Page.waitForSelector", "should immediately resolve task if node exists")]30 public async Task ShouldImmediatelyResolveTaskIfNodeExists()31 {32 await Page.GoToAsync(TestConstants.ServerUrl + "/​static/​css.html");33 await Page.AddStyleTagAsync(new AddTagOptions { Content = "div { display: none; }" });34 var waitForSelectorTask = Page.WaitForSelectorAsync("div");35 await Page.EvaluateExpressionAsync("() => delete window['Node']");36 var e = await Assert.ThrowsAsync<PuppeteerException>(async () => await waitForSelectorTask);37 Assert.Contains("Node is not defined", e.Message);38 }39 }40}

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ShouldImmediatelyResolveTaskIfNodeExists

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1using System;2using System.IO;3using System.Threading.Tasks;4using PuppeteerSharp.Tests;5using PuppeteerSharp.Xunit;6using Xunit;7using Xunit.Abstractions;8{9 [Collection(TestConstants.TestFixtureCollectionName)]10 {11 public ShouldImmediatelyResolveTaskIfNodeExists(ITestOutputHelper output) : base(output)12 {13 }14 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should immediately resolve task if node exists")]15 public async Task ShouldImmediatelyResolveTaskIfNodeExists()16 {17 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");18 await Page.EvalOnSelectorAsync("div", "div => div.id = 'mydiv'");19 Assert.NotNull(await Page.WaitForSelectorAsync("#mydiv"));20 }21 }22}23{24 {25 {26 public FrameWaitForSelectorTests(ITestOutputHelper output) : base(output)27 {28 }29 [PuppeteerTest("waittask.spec.ts", "Frame.waitForSelector", "should immediately resolve task if node exists")]30 public async Task ShouldImmediatelyResolveTaskIfNodeExists()31 {32 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");33 await Page.EvalOnSelectorAsync("div", "div => div.id = 'mydiv'");34 Assert.NotNull(await Page.WaitForSelectorAsync("#mydiv"));35 }36 }37 }38}39var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true });

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StackOverFlow community discussions

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Get Result of document.querySelectorAll in PuppeteerSharp

using below,

using var page = browser.NewPageAsync().Result;

page.TypeAsync("input[name='elementname']", valuetobeset).Wait();
https://stackoverflow.com/questions/67332554/set-input-value-with-puppeteer-sharp

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