How to use FrameWaitForFunctionTests class of PuppeteerSharp.Tests.WaitTaskTests package

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

FrameWaitForFunctionTests.cs

Source: FrameWaitForFunctionTests.cs Github

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...6using Xunit.Abstractions;7namespace PuppeteerSharp.Tests.WaitTaskTests8{9 [Collection(TestConstants.TestFixtureCollectionName)]10 public class FrameWaitForFunctionTests : PuppeteerPageBaseTest11 {12 public FrameWaitForFunctionTests(ITestOutputHelper output) : base(output)13 {14 }15 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work when resolved right before execution context disposal")]16 [PuppeteerFact]17 public async Task ShouldWorkWhenResolvedRightBeforeExecutionContextDisposal()18 {19 await Page.EvaluateFunctionOnNewDocumentAsync("() => window.__RELOADED = true");20 await Page.WaitForFunctionAsync(@"() =>21 {22 if (!window.__RELOADED)23 window.location.reload();24 return true;25 }");26 }...

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FrameWaitForFunctionTests

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1using PuppeteerSharp.Tests.WaitTaskTests;2using System.Threading.Tasks;3{4 {5 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work")]6 public async Task ShouldWork()7 {8 var watchdog = Page.WaitForFunctionAsync("window.__FOO === 1");9 await Page.EvaluateExpressionAsync("window.__FOO = 1");10 await watchdog;11 }12 }13}

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FrameWaitForFunctionTests

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1using PuppeteerSharp.Tests.WaitTaskTests;2using System;3using System.Threading.Tasks;4{5 {6 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work")]7 public async Task ShouldWork()8 {9 var watchdog = Page.WaitForFunctionAsync("window.__FOO === 1");10 await Page.EvaluateExpressionAsync("window.__FOO = 1");11 await watchdog;12 }13 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work with multiline body")]14 public async Task ShouldWorkWithMultilineBody()15 {16 var watchdog = Page.WaitForFunctionAsync(@"17 window.__FOO = 'hit';18 true;19 ");20 await watchdog;21 Assert.Equal("hit", await Page.EvaluateExpressionAsync<string>("window.__FOO"));22 }23 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on interval")]24 public async Task ShouldPollOnInterval()25 {26 var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions { PollingInterval = 100 });27 await Task.Delay(200);28 await Page.EvaluateExpressionAsync("window.__FOO = 'hit'");29 await watchdog;30 }31 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on mutation")]32 public async Task ShouldPollOnMutation()33 {34 var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Mutation });35 await Page.EvaluateExpressionAsync("window.__FOO = 'hit'");36 await watchdog;37 }38 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on raf")]39 public async Task ShouldPollOnRaf()40 {41 var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Raf });42 await Page.EvaluateExpressionAsync("window.__FOO =

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FrameWaitForFunctionTests

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1using PuppeteerSharp.Tests.WaitTaskTests;2using System.Threading.Tasks;3using Xunit;4using Xunit.Abstractions;5{6 {7 public FrameWaitForFunctionTests(ITestOutputHelper output) : base(output)8 {9 }10 public async Task ShouldImmediatelyResolvePromiseIfNodeIsInDOM()11 {12 await Page.GoToAsync(TestConstants.ServerUrl + "/​static/​injectedfile.html");13 var frame = Page.Frames[1];14 var watchdog = frame.WaitForFunctionAsync("() => window.__injected");15 await Task.WhenAll(16 frame.EvaluateFunctionAsync("() => window.__injected = 123")17 );18 Assert.Equal(123, await watchdog.Result.JsonValueAsync<int>());19 }20 public async Task ShouldWorkWhenNodeIsAddedThroughInnerHTML()21 {22 await Page.GoToAsync(TestConstants.ServerUrl + "/​static/​injectedfile.html");23 var frame = Page.Frames[1];24 var watchdog = frame.WaitForFunctionAsync("() => window.__injected");25 await Task.WhenAll(26 frame.EvaluateFunctionAsync("() => document.body.innerHTML = `<div id='added'>not-a-number</​div>`")27 );28 Assert.Equal("not-a-number", await watchdog.Result.JsonValueAsync<string>());29 }30 public async Task ShouldWorkWhenNodeIsAddedThroughDOMApi()31 {32 await Page.GoToAsync(TestConstants.ServerUrl + "/​static/​injectedfile.html");33 var frame = Page.Frames[1];34 var watchdog = frame.WaitForFunctionAsync("() => window.__injected");35 await Task.WhenAll(36 frame.EvaluateFunctionAsync("() => document.body.appendChild(document.createElement('div')).setAttribute('id', 'added')"));37 Assert.Equal("added", await watchdog.Result.JsonValueAsync<string>());38 }39 public async Task ShouldWorkWhenNodeIsAddedThroughInnerHTMLSVG()40 {41 await Page.GoToAsync(TestConstants.ServerUrl + "/​static/​injectedfile.html");42 var frame = Page.Frames[1];43 var watchdog = frame.WaitForFunctionAsync("() => window.__injected");44 await Task.WhenAll(45 frame.EvaluateFunctionAsync("() => document.body.innerHTML = `<svg><g><text id

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FrameWaitForFunctionTests

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4using PuppeteerSharp.Tests.WaitTaskTests;5{6 {7 [PuppeteerTest("waittask.spec.js", "Frame.waitForFunction", "should immediately resolve promise if node exists")]8 public async Task ShouldImmediatelyResolvePromiseIfNodeExists()9 {10 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");11 var frame = Page.MainFrame;12 var watchdog = frame.WaitForFunctionAsync("() => window.__FOO === 1");13 await Page.EvaluateExpressionAsync("window.__FOO = 1");14 var e = await Assert.ThrowsAnyAsync<Exception>(() => watchdog);15 Assert.Contains("Function passed to `frame.waitForFunction` resolved to " + "a truthy value", e.Message);16 }17 [PuppeteerTest("waittask.spec.js", "Frame.waitForFunction", "should work when resolved to Node")]18 public async Task ShouldWorkWhenResolvedToNode()19 {20 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");21 var frame = Page.MainFrame;22 var watchdog = frame.WaitForFunctionAsync("() => document.body");23 await Page.EvaluateExpressionAsync("document.body.appendChild(document.createElement('div'))");24 var e = await Assert.ThrowsAnyAsync<Exception>(() => watchdog);25 Assert.Contains("Function passed to `frame.waitForFunction` resolved to " + "a truthy value", e.Message);26 }27 [PuppeteerTest("waittask.spec.js", "Frame.waitForFunction", "should resolve promise when node is added")]28 public async Task ShouldResolvePromiseWhenNodeIsAdded()29 {30 await Page.GoToAsync(TestConstants.ServerUrl + "/​playground.html");31 var watchdog = Page.MainFrame.WaitForFunctionAsync("() => !!document.querySelector('div')");32 await Page.EvaluateExpressionAsync("document.body.appendChild(document.createElement('div'))");33 var e = await Assert.ThrowsAnyAsync<Exception>(() => watchdog);34 Assert.Contains("Function passed to `frame.waitForFunction` resolved to " + "a truthy value", e.Message);35 }36 [PuppeteerTest("waittask.spec.js", "Frame.waitForFunction", "Page.waitForFunction

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FrameWaitForFunctionTests

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1using PuppeteerSharp.Tests.WaitTaskTests;2using System.Threading.Tasks;3{4 {5 public static async Task Main(string[] args)6 {7 var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false, SlowMo = 250 });8 var page = await browser.NewPageAsync();9 await page.WaitForFunctionAsync("() => window.innerWidth < 100");10 await browser.CloseAsync();11 }12 }13}

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FrameWaitForFunctionTests

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1using PuppeteerSharp.Tests.WaitTaskTests;2using System.Threading.Tasks;3using System;4using System.Collections.Generic;5using System.Linq;6using System.Text;7using System.Threading.Tasks;

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FrameWaitForFunctionTests

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1using PuppeteerSharp.Tests.WaitTaskTests;2{3 static void Main(string[] args)4 {5 var test = new FrameWaitForFunctionTests();6 test.SetupAsync().Wait();7 test.FrameWaitForFunctionShouldWork().Wait();8 test.FrameWaitForFunctionShouldAcceptElementHandleAsAnArgument().Wait();9 test.FrameWaitForFunctionShouldAcceptElementHandleAsAnArgumentHandle().Wait();10 test.FrameWaitForFunctionShouldAcceptMultipleArgs().Wait();11 test.FrameWaitForFunctionShouldThrowIfEvaluationFailed().Wait();12 test.FrameWaitForFunctionShouldRespectTimeout().Wait();13 test.FrameWaitForFunctionShouldRespectTimeoutInPage().Wait();14 test.FrameWaitForFunctionShouldPollOnRaf().Wait();15 test.FrameWaitForFunctionShouldPollOnMutation().Wait();16 test.FrameWaitForFunctionShouldPollOnInterval().Wait();17 test.FrameWaitForFunctionShouldReturnTheValue().Wait();18 test.FrameWaitForFunctionShouldReturnTheValueHandle().Wait();19 test.FrameWaitForFunctionShouldThrowIfPassedStringAsFunction().Wait();20 test.FrameWaitForFunctionShouldWorkWhenNodeIsRemoved().Wait();21 test.FrameWaitForFunctionShouldWorkWhenNodeIsAdded().Wait();22 test.FrameWaitForFunctionShouldWorkWhenBodyIsAdded().Wait();23 test.FrameWaitForFunctionShouldWorkWithStrictContentSecurityPolicy().Wait();24 test.FrameWaitForFunctionShouldWorkWithStrictContentSecurityPolicyAndOriginalContentSecurityPolicyMetaTag().Wait();25 test.FrameWaitForFunctionShouldSurviveCrossProcessesNavigation().Wait();26 test.FrameWaitForFunctionShouldSurviveCrossProcessesNavigationWhenDocumentWasNotCached().Wait();27 test.FrameWaitForFunctionShouldSurviveNavigations().Wait();28 test.FrameWaitForFunctionShouldWorkWithContentWindow().Wait();29 test.FrameWaitForFunctionShouldWorkWithContentWindowAndNoCsp().Wait();30 test.FrameWaitForFunctionShouldWorkWithContentWindowAndOriginalContentSecurityPolicyMetaTag().Wait();31 test.FrameWaitForFunctionShouldWorkWithContentWindowAndStrictContentSecurityPolicy().Wait();32 test.FrameWaitForFunctionShouldWorkWithContentWindowAndStrictContentSecurityPolicyAndOriginalContentSecurityPolicyMetaTag().Wait();33 test.FrameWaitForFunctionShouldWorkWithContentWindowAndStrictContentSecurityPolicyAndReportUri().Wait();

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FrameWaitForFunctionTests

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1using PuppeteerSharp;2using PuppeteerSharp.Tests.WaitTaskTests;3using System;4using System.Threading.Tasks;5{6 {7 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work when resolved right before execution context disposal")]8 public async Task ShouldWorkWhenResolvedRightBeforeExecutionContextDisposal()9 {10 var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 1");11 await Page.EvaluateExpressionAsync("window.__FOO = 1");12 await watchdog;13 }14 }15}16using PuppeteerSharp;17using PuppeteerSharp.Tests.WaitTaskTests;18using System;19using System.Threading.Tasks;20{21 {22 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work when Node.js handles are adopted")]23 public async Task ShouldWorkWhenNodeJSHandlesAreAdopted()24 {25 var windowHandle = await Page.EvaluateExpressionHandleAsync("window");26 var watchdog = Page.WaitForFunctionAsync("() => !window.__foo", new WaitForFunctionOptions { PollingInterval = 100 }, windowHandle);27 await Page.EvaluateExpressionAsync("window.__foo = 'hit'");28 await watchdog;29 }30 }31}32using PuppeteerSharp;33using PuppeteerSharp.Tests.WaitTaskTests;34using System;35using System.Threading.Tasks;36{37 {38 [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on interval")]39 public async Task ShouldPollOnInterval()

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StackOverFlow community discussions

Questions
Discussion

Is there a remove page method corresponding to NewPageAsync() in PuppeteerSharp?

how to use puppeteer-sharp touchStart and touchEnd and touch move

How to set download behaviour in PuppeteerSharp?

PuppeteerSharp throws ChromiumProcessException &quot;Failed to create connection&quot; when launching a browser

How to get text out of ElementHandle?

PuppeteerSharp - querySelectorAll + click

How do you set a cookie in Puppetteer-Sharp?

PuppeteerSharp best practices

PuppeteerSharp evaluate expression to complex type?

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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