How to use EmulateTests class of PuppeteerSharp.Tests.EmulationTests package

Best Puppeteer-sharp code snippet using PuppeteerSharp.Tests.EmulationTests.EmulateTests

EmulateTests.cs

Source: EmulateTests.cs Github

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...5using Xunit.Abstractions;6namespace PuppeteerSharp.Tests.EmulationTests7{8 [Collection(TestConstants.TestFixtureCollectionName)]9 public class EmulateTests : PuppeteerPageBaseTest10 {11 public EmulateTests(ITestOutputHelper output) : base(output)12 {13 }14 [PuppeteerTest("emulation.spec.ts", "Page.emulate", "should work")]15 [PuppeteerFact]16 public async Task ShouldWork()17 {18 await Page.GoToAsync(TestConstants.ServerUrl + "/​mobile.html");19 await Page.EmulateAsync(TestConstants.IPhone);20 Assert.Equal(375, await Page.EvaluateExpressionAsync<int>("window.innerWidth"));21 Assert.Contains("iPhone", await Page.EvaluateExpressionAsync<string>("navigator.userAgent"));22 }23 [PuppeteerTest("emulation.spec.ts", "Page.emulate", "should support clicking")]24 [PuppeteerFact]25 public async Task ShouldSupportClicking()...

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EmulateTests

Using AI Code Generation

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1using PuppeteerSharp.Tests.EmulationTests;2using System;3using System.Threading.Tasks;4{5 {6 static async Task Main(string[] args)7 {8 await new EmulateTests().EmulateDeviceScaleFactor();9 }10 }11}

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EmulateTests

Using AI Code Generation

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1using PuppeteerSharp.Tests.EmulationTests;2using System;3using System.Threading.Tasks;4{5 {6 static async Task Main(string[] args)7 {8 Console.WriteLine("Hello World!");9 var emulateTests = new EmulateTests();10 await emulateTests.EmulateViewport();11 }12 }13}

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EmulateTests

Using AI Code Generation

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1using System;2using System.IO;3using System.Threading.Tasks;4using PuppeteerSharp;5{6 {7 static async Task Main(string[] args)8 {9 var browser = await Puppeteer.LaunchAsync(new LaunchOptions10 {11 ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"12 });13 var page = await browser.NewPageAsync();

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EmulateTests

Using AI Code Generation

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1using PuppeteerSharp.Tests.EmulationTests;2using System.Threading.Tasks;3{4 {5 static async Task Main(string[] args)6 {7 var emulateTests = new EmulateTests();8 await emulateTests.SetUserAgentAsync();9 await emulateTests.SetUserAgentAsyncWithDeviceMetricsOverride();10 await emulateTests.SetUserAgentAsyncWithNetworkThrottling();11 await emulateTests.SetUserAgentAsyncWithCPUThrottling();12 await emulateTests.SetUserAgentAsyncWithTouch();13 await emulateTests.SetUserAgentAsyncWithEmulateMedia();14 await emulateTests.SetUserAgentAsyncWithEmulateMediaAndDeviceMetricsOverride();15 }16 }17}

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EmulateTests

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1var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3});4var page = await browser.NewPageAsync();5await page.SetViewportAsync(new ViewPortOptions6{7});8await page.ScreenshotAsync("320x480.png");9await page.SetViewportAsync(new ViewPortOptions10{11});12await page.ScreenshotAsync("1280x720.png");13await page.SetViewportAsync(new ViewPortOptions14{15});16await page.ScreenshotAsync("1920x1080.png");17await browser.CloseAsync();18var browser = await Puppeteer.LaunchAsync(new LaunchOptions19{20});21var page = await browser.NewPageAsync();22await page.SetViewportAsync(new ViewPortOptions23{24});25await page.ScreenshotAsync("320x480.png");26await page.SetViewportAsync(new ViewPortOptions27{28});29await page.ScreenshotAsync("1280x720.png");30await page.SetViewportAsync(new ViewPortOptions31{32});33await page.ScreenshotAsync("1920x1080.png");34await browser.CloseAsync();35var browser = await Puppeteer.LaunchAsync(new

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EmulateTests

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4using PuppeteerSharp.Tests;5using PuppeteerSharp.Tests.EmulationTests;6using PuppeteerSharp.Xunit;7using Xunit;8using Xunit.Abstractions;9{10 [Collection(TestConstants.TestFixtureCollectionName)]11 {12 public EmulateTests(ITestOutputHelper output) : base(output)13 {14 }15 [PuppeteerTest("emulation.spec.ts", "Emulation", "should work")]16 [Fact(Timeout = TestConstants.DefaultTestTimeout)]17 public async Task ShouldWork()18 {19 await Page.EmulateAsync(new EmulateOptions20 {21 {22 },23 });24 Assert.Equal(500, Page.Viewport.Width);25 Assert.Equal(500, Page.Viewport.Height);26 Assert.Equal("foobar", await Page.EvaluateExpressionAsync<string>("window.navigator.userAgent"));27 }28 [PuppeteerTest("emulation.spec.ts", "Emulation", "should support mobile emulation")]29 [Fact(Timeout = TestConstants.DefaultTestTimeout)]30 public async Task ShouldSupportMobileEmulation()31 {32 await Page.EmulateAsync(new EmulateOptions33 {34 });35 Assert.Equal(TestConstants.IPhone.ViewPort.Width, Page.Viewport.Width);36 Assert.Equal(TestConstants.IPhone.ViewPort.Height, Page.Viewport.Height);37 Assert.Equal(TestConstants.IPhone.UserAgent, await Page.EvaluateExpressionAsync<string>("window.navigator.userAgent"));38 }39 [PuppeteerTest("emulation.spec.ts", "Emulation", "should support touch emulation")]40 [Fact(Timeout = TestConstants.DefaultTestTimeout)]41 public async Task ShouldSupportTouchEmulation()42 {43 await Page.EmulateAsync(new EmulateOptions44 {45 });46 Assert.True(await Page.EvaluateExpressionAsync<bool>("'ontouchstart' in window"));47 }

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EmulateTests

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp;7using PuppeteerSharp.Tests.EmulationTests;8{9 {10 public async Task EmulateTestsAsync()11 {12 {13 };14 using (var browser = await Puppeteer.LaunchAsync(options))15 using (var page = await browser.NewPageAsync())16 {17 await page.EmulateAsync(new ViewPortOptions18 {19 });20 await page.ScreenshotAsync("viewport.png");21 }22 }23 }24}25using System;26using System.Collections.Generic;27using System.Linq;28using System.Text;29using System.Threading.Tasks;30using PuppeteerSharp;31using PuppeteerSharp.Tests.EmulationTests;32{33 {34 public async Task EmulateMediaTestsAsync()35 {36 {37 };38 using (var browser = await Puppeteer.LaunchAsync(options))39 using (var page = await browser.NewPageAsync())40 {41 await page.EmulateMediaAsync(new EmulateMediaOptions42 {43 });44 await page.ScreenshotAsync("print.png");45 }46 }47 }48}49using System;50using System.Collections.Generic;51using System.Linq;52using System.Text;53using System.Threading.Tasks;

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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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