How to use ShouldPollOnRafAsync method of PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldPollOnRafAsync

FrameWaitForFunctionTests.cs

Source: FrameWaitForFunctionTests.cs Github

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...91 await watchdog;92 }93 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on raf async")]94 [PuppeteerFact]95 public async Task ShouldPollOnRafAsync()96 {97 var watchdog = Page.WaitForFunctionAsync("async () => window.__FOO === 'hit'",98 new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Raf });99 await Page.EvaluateFunctionAsync("async () => (globalThis.__FOO = 'hit')");100 await watchdog;101 }102 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work with strict CSP policy")]103 [SkipBrowserFact(skipFirefox: true)]104 public async Task ShouldWorkWithStrictCSPPolicy()105 {106 Server.SetCSP("/​empty.html", "script-src " + TestConstants.ServerUrl);107 await Page.GoToAsync(TestConstants.EmptyPage);108 await Task.WhenAll(109 Page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions...

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ShouldPollOnRafAsync

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1using System;2using System.Collections.Generic;3using System.Text;4using System.Threading.Tasks;5using PuppeteerSharp.Tests.Attributes;6using Xunit;7using Xunit.Abstractions;8{9 [Collection(TestConstants.TestFixtureCollectionName)]10 {11 public FrameWaitForFunctionTests(ITestOutputHelper output) : base(output)12 {13 }14 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on raf")]15 public async Task ShouldPollOnRafAsync()16 {17 var watchdog = Page.WaitForFunctionAsync("window.__FOO === 'hit'");18 await Page.EvaluateFunctionAsync("() => window.requestAnimationFrame(() => window.__FOO = 'hit')");19 await watchdog;20 }21 }22}23using System;24using System.Collections.Generic;25using System.Text;26using System.Threading.Tasks;27using PuppeteerSharp.Tests.Attributes;28using Xunit;29using Xunit.Abstractions;30{31 [Collection(TestConstants.TestFixtureCollectionName)]32 {33 public FrameWaitForFunctionTests(ITestOutputHelper output) : base(output)34 {35 }36 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on mutation")]37 public async Task ShouldPollOnMutationAsync()38 {39 var watchdog = Page.WaitForFunctionAsync("window.__FOO === 'hit'");40 await Page.EvaluateFunctionAsync("() => new MutationObserver(() => window.__FOO = 'hit').observe(document.body, { attributes: true })");41 await Page.EvaluateFunctionAsync("() => document.body.setAttribute('foo', 'bar')");42 await watchdog;43 }44 }45}46using System;47using System.Collections.Generic;48using System.Text;49using System.Threading.Tasks;50using PuppeteerSharp.Tests.Attributes;51using Xunit;52using Xunit.Abstractions;53{54 [Collection(TestConstants

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ShouldPollOnRafAsync

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1PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldPollOnRafAsync()2PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldPollOnAnimationFrame()3PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldWorkWhenNodeIsRemoved()4PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldThrowWhenFrameIsDetached()5PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldWorkWithNullifiedWindowObject()6PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldNotThrowWhenFrameIsDetached()7PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldSurviveCrossProcessNavigation()8PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldSurviveCrossProcessNavigationWhenFrameIsDetached()9PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldSurviveCrossProcessNavigationWhenFrameIsDetached()

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ShouldPollOnRafAsync

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp.Tests.WaitTaskTests;7using PuppeteerSharp.Helpers;8using PuppeteerSharp.Xunit;9using Xunit;10using Xunit.Abstractions;11using System.IO;12using System.Threading;13{14 {15 public FrameWaitForFunctionTests(ITestOutputHelper output) : base(output)16 {17 }18 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work when resolved right before execution context disposal")]19 public async Task ShouldWorkWhenResolvedRightBeforeExecutionContextDisposal()20 {21 var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 1");22 await Page.EvaluateExpressionAsync("window.__FOO = 1");23 await watchdog;24 }25 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on mutation")]26 public async Task ShouldPollOnMutation()27 {28 var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'");29 await Page.EvaluateFunctionAsync("() => window.__FOO = 'hit'");30 await watchdog;31 }32 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on raf")]33 public async Task ShouldPollOnRaf()34 {35 var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'");36 await Page.EvaluateFunctionAsync("() => new Promise(f => requestAnimationFrame(() => { window.__FOO = 'hit'; f(); }))");37 await watchdog;38 }39 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on animationend")]40 public async Task ShouldPollOnAnimationend()41 {42 await Page.SetContentAsync("<div class='foo-style'>anything</​div>");43 var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'");44 await Page.EvaluateFunctionAsync("() => new Promise(f => document.querySelector('div').addEventListener('animationend', f))");45 await Page.EvaluateFunctionAsync("() => document.querySelector('div').classList

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ShouldPollOnRafAsync

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1var frame = await Page.GetMainFrameAsync();2await frame.WaitForFunctionAsync("() => window.innerWidth < 100");3await frame.WaitForFunctionAsync("() => window.innerWidth < 100", new WaitForFunctionOptions { PollingInterval = 100 });4var frame = await Page.GetMainFrameAsync();5var watchdog = frame.WaitForFunctionAsync("() => window.innerWidth < 100");6await Page.EvaluateFunctionAsync("() => new Promise(r => requestAnimationFrame(r))");7await watchdog;8var frame = await Page.GetMainFrameAsync();9var watchdog = frame.WaitForFunctionAsync("() => window.innerWidth < 100");

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ShouldPollOnRafAsync

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1var watchdog = page.WaitForFunctionAsync("() => window.innerWidth < 100");2await page.EvaluateFunctionAsync("() => window.innerWidth = 10");3await watchdog;4await page.WaitForFunctionAsync("() => window.innerWidth < 100", new WaitForFunctionOptions5{6});7await page.WaitForFunctionAsync("() => window.innerWidth < 100", new WaitForFunctionOptions8{9});10var watchdog = page.WaitForFunctionAsync("() => window.innerWidth < 100");11await page.EvaluateFunctionAsync("() => window.innerWidth = 10");12await watchdog;13await page.WaitForFunctionAsync("() => window.innerWidth < 100", new WaitForFunctionOptions14{15});16await page.WaitForFunctionAsync("() => window.innerWidth < 100", new WaitForFunctionOptions17{18});19await page.GoToAsync(TestConstants.ServerUrl + "/​waitfor.html");20var watchdog = page.WaitForFunctionAsync("() => window.__FOO === 1");21await page.EvaluateFunctionAsync("() => window.__FOO = 1");22await watchdog;23await page.WaitForFunctionAsync("() => window.__FOO === 1", new WaitForFunctionOptions24{25});26await page.WaitForFunctionAsync("() => window.__FOO === 1", new WaitForFunctionOptions27{28});29await page.GoToAsync(TestConstants.ServerUrl + "/​waitfor.html");30var watchdog = page.WaitForFunctionAsync("([a, b]) => a !== b", new object[] { 1, 2 });31await page.EvaluateFunctionAsync("() => window.__FOO =

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ShouldPollOnRafAsync

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1PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldPollOnRafAsync()2using PuppeteerSharp;3using System.Threading.Tasks;4public static async Task ShouldPollOnRafAsync()5{6 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);7 using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))8 using (var page = await browser.NewPageAsync())9 {10 var watchdog = page.WaitForFunctionAsync("window.__FOO === 1", new WaitForFunctionOptions { Polling = WaitForFunctionPolling.Raf });11 await page.EvaluateFunctionAsync("() => window.__FOO = 1");12 await watchdog;13 }14}15PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldPollOnMutationObserverAsync()16using PuppeteerSharp;17using System.Threading.Tasks;18public static async Task ShouldPollOnMutationObserverAsync()19{20 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);21 using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))22 using (var page = await browser.NewPageAsync())23 {24 var watchdog = page.WaitForFunctionAsync("window.__FOO === 'hit'",25 new WaitForFunctionOptions { Polling = WaitForFunctionPolling.Mutation });26 await page.EvaluateFunctionAsync("() => window.__FOO = 'hit'");27 await watchdog;28 }29}30PuppeteerSharp.Tests.WaitTaskTests.FrameWaitForFunctionTests.ShouldPollOnIntervalAsync()31using PuppeteerSharp;32using System.Threading.Tasks;33public static async Task ShouldPollOnIntervalAsync()34{35 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);36 using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))37 using (var page = await browser.NewPageAsync())

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ShouldPollOnRafAsync

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1using System;2{3    {4        public void Run()5        {6            var document = new Document();7            var window = new Window();8            var rafCount = 0;9            var intervalCount = 0;10            window.requestAnimationFrame = (callback) =>11            {12                rafCount++;13                callback();14                return rafCount;15            };16            window.setInterval = (callback, timeout) =>17            {18                intervalCount++;19                callback();20                return intervalCount;21            };22            document.window = window;23            var frame = new Frame();24            frame.Document = document;25            var task = frame.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions26            {27            });28            window.__FOO = "hit";29            task.Wait();30            Assert.True(rafCount > 0);31            Assert.Equal(0, intervalCount);32        }33    }34}35using System;36{37    {38        public void Run()39        {40            var document = new Document();41            var window = new Window();42            var rafCount = 0;43            var intervalCount = 0;44            var mutationCount = 0;45            window.requestAnimationFrame = (callback) =>46            {47                rafCount++;48                callback();49                return rafCount;50            };51            window.setInterval = (callback, timeout) =>52            {53                intervalCount++;54                callback();55                return intervalCount;56            };57            document.window = window;58            var frame = new Frame();59            frame.Document = document;60            var task = frame.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions61            {62            });63            window.__FOO = "hit";

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ShouldPollOnRafAsync

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1public async Task<bool> ShouldPollOnRafAsync()2{3 var page = await Browser.NewPageAsync();4 var watchdog = page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions { PollingInterval = 100 });5 await page.EvaluateFunctionAsync("() => window.__FOO = 'hit'");6 var result = await watchdog;7 return result.Success;8}9public async Task<bool> ShouldPollOnMutationAsync()10{11 var page = await Browser.NewPageAsync();12 await page.SetContentAsync("<div></​div>");13 var watchdog = page.WaitForFunctionAsync("() => document.querySelector('div').offsetWidth > 10");14 await page.EvaluateFunctionAsync("() => document.querySelector('div').style.width = '100px'");15 var result = await watchdog;16 return result.Success;17}18public async Task<bool> ShouldPollOnRafAsync()19{20 var page = await Browser.NewPageAsync();21 var watchdog = page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions { PollingInterval = 100 });22 await page.EvaluateFunctionAsync("() => window.__FOO = 'hit'");23 var result = await watchdog;24 return result.Success;25}26public async Task<bool> ShouldPollOnMutationAsync()27{28 var page = await Browser.NewPageAsync();29 await page.SetContentAsync("<div></​div>");30 var watchdog = page.WaitForFunctionAsync("() => document.querySelector('div').offsetWidth > 10");31 await page.EvaluateFunctionAsync("() => document.querySelector('div').style.width = '100px'");

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StackOverFlow community discussions

Questions
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Cancel Downloading in PuppeteerSharp

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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