How to use AddStyleTagTests class of PuppeteerSharp.Tests.PageTests package

Best Puppeteer-sharp code snippet using PuppeteerSharp.Tests.PageTests.AddStyleTagTests

AddStyleTagTests.cs

Source: AddStyleTagTests.cs Github

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...5using Xunit.Abstractions;6namespace PuppeteerSharp.Tests.PageTests7{8 [Collection("PuppeteerLoaderFixture collection")]9 public class AddStyleTagTests : PuppeteerPageBaseTest10 {11 public AddStyleTagTests(ITestOutputHelper output) : base(output)12 {13 }14 [Fact]15 public async Task ShouldThrowAnErrorIfNoOptionsAreProvided()16 {17 var exception = await Assert.ThrowsAsync<ArgumentException>(()18 => Page.AddStyleTagAsync(new AddTagOptions()));19 Assert.Equal("Provide options with a `Url`, `Path` or `Content` property", exception.Message);20 }21 [Fact]22 public async Task ShouldWorkWithAUrl()23 {24 await Page.GoToAsync(TestConstants.EmptyPage);25 var styleHandle = await Page.AddStyleTagAsync(new AddTagOptions { Url = "/​injectedstyle.css" });...

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AddStyleTagTests

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1using PuppeteerSharp.Tests.PageTests;2using System;3using System.Threading.Tasks;4{5 {6 static async Task Main(string[] args)7 {8 await new AddStyleTagTests().AddStyleTagWithInvalidContent();9 }10 }11}12using PuppeteerSharp.Tests.PageTests;13using System;14using System.Threading.Tasks;15{16 {17 static async Task Main(string[] args)18 {19 await new AddStyleTagTests().AddStyleTagWithUrl();20 }21 }22}23using PuppeteerSharp.Tests.PageTests;24using System;25using System.Threading.Tasks;26{27 {28 static async Task Main(string[] args)29 {30 await new AddStyleTagTests().AddStyleTagWithUrlAndType();31 }32 }33}34using PuppeteerSharp.Tests.PageTests;35using System;36using System.Threading.Tasks;37{38 {39 static async Task Main(string[] args)40 {41 await new AddStyleTagTests().AddStyleTagWithUrlAndPath();42 }43 }44}45using PuppeteerSharp.Tests.PageTests;46using System;47using System.Threading.Tasks;48{49 {50 static async Task Main(string[] args)51 {52 await new AddStyleTagTests().AddStyleTagWithUrlAndPathAndType();53 }54 }55}56using PuppeteerSharp.Tests.PageTests;57using System;58using System.Threading.Tasks;59{60 {61 static async Task Main(string[] args)62 {63 await new AddStyleTagTests().AddStyleTagWithRelativeUrl();64 }65 }66}

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AddStyleTagTests

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1using PuppeteerSharp.Tests.PageTests;2using System;3using Xunit;4{5 {6 public async Task ShouldWork()7 {8 var styleHandle = await Page.AddStyleTagAsync(new AddTagOptions { Url = "./​assets/​injectstyle.css" });9 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('body')).getPropertyValue('background-color')"));10 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('color')"));11 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-left-color')"));12 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-right-color')"));13 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-top-color')"));14 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-bottom-color')"));15 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-left-style')"));16 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-right-style')"));17 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-top-style')"));18 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-bottom-style')"));19 Assert.Equal("rgb(255, 0, 0)", await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.querySelector('h3')).getPropertyValue('border-left-width')"));20 Assert.Equal("rgb(255,

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AddStyleTagTests

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1using PuppeteerSharp.Tests.PageTests;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8 {9 public async Task ShouldWorkWithAContentAndType()10 {11 var page = await Browser.NewPageAsync();12 var styleHandle = await page.AddStyleTagAsync(new AddStyleTagOptions13 {14 Content = "body { background-color: green; }"15 });16 Assert.NotNull(styleHandle);17 Assert.Equal("BODY", await page.EvaluateExpressionAsync<string>("document.body.tagName"));18 var color = await page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.body).getPropertyValue('background-color')");19 Assert.Equal("rgb(0, 128, 0)", color);20 }21 public async Task ShouldWorkWithAPath()22 {23 var page = await Browser.NewPageAsync();24 var styleHandle = await page.AddStyleTagAsync(new AddStyleTagOptions25 {26 Path = Path.Combine(Directory.GetCurrentDirectory(), "Assets", "injectedstyle.css")27 });28 Assert.NotNull(styleHandle);29 Assert.Equal("BODY", await page.EvaluateExpressionAsync<string>("document.body.tagName"));30 var color = await page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.body).getPropertyValue('background-color')");31 Assert.Equal("rgb(0, 128, 0)", color);32 }33 public async Task ShouldThrowAnErrorWhenLoadingBadCssPath()34 {35 var page = await Browser.NewPageAsync();36 var exception = await Assert.ThrowsAsync<PuppeteerException>(async () => await page.AddStyleTagAsync(new AddStyleTagOptions37 {38 Path = Path.Combine(Directory.GetCurrentDirectory(), "Assets", "nonexistfile.css")39 }));40 Assert.Contains("Loading CSS from", exception.Message);41 }42 public async Task ShouldWorkWithAUrl()43 {44 var page = await Browser.NewPageAsync();45 var styleHandle = await page.AddStyleTagAsync(new AddStyleTagOptions46 {47 });48 Assert.NotNull(styleHandle);49 Assert.Equal("BODY", await page.EvaluateExpressionAsync<string>("document.body.tagName"));

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AddStyleTagTests

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1using PuppeteerSharp.Tests.PageTests;2using NUnit.Framework;3using System.Threading.Tasks;4using System;5using System.IO;6using System.Reflection;7{8 {9 public async Task ShouldWork()10 {11 var options = TestConstants.DefaultBrowserOptions();12 options.Headless = false;13 using (var browser = await Puppeteer.LaunchAsync(options))14 using (var page = await browser.NewPageAsync())15 {16 var styleHandle = await page.AddStyleTagAsync(new AddTagOptions17 {18 Content = "body { background-color: green; }"19 });20 var styleContent = await page.EvaluateFunctionAsync<string>("style => style.innerHTML", styleHandle);21 Assert.AreEqual("body { background-color: green; }", styleContent);22 }23 }24 }25}26using PuppeteerSharp.Tests.PageTests;27using NUnit.Framework;28using System.Threading.Tasks;29using System;30using System.IO;31using System.Reflection;32{33 {34 public async Task ShouldWork()35 {36 var options = TestConstants.DefaultBrowserOptions();37 options.Headless = false;38 using (var browser = await Puppeteer.LaunchAsync(options))39 using (var page = await browser.NewPageAsync())40 {41 var styleHandle = await page.AddStyleTagAsync(new AddTagOptions42 {43 });44 var styleContent = await page.EvaluateFunctionAsync<string>("style => style.innerHTML", styleHandle);45 Assert.AreEqual("body { background-color: green; }", styleContent);46 }47 }48 }49}50using PuppeteerSharp.Tests.PageTests;51using NUnit.Framework;52using System.Threading.Tasks;53using System;54using System.IO;55using System.Reflection;56{57 {58 public async Task ShouldWork()59 {60 var options = TestConstants.DefaultBrowserOptions();61 options.Headless = false;

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AddStyleTagTests

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp.Tests.PageTests;4using PuppeteerSharp.Tests.Attributes;5using PuppeteerSharp.Tests.TestConstants;6{7 {8 static void Main(string[] args)9 {10 }11 }12}13using System;14using System.Threading.Tasks;15using PuppeteerSharp.Tests.PageTests;16using PuppeteerSharp.Tests.Attributes;17using PuppeteerSharp.Tests.TestConstants;18{19 {20 static void Main(string[] args)21 {22 }23 }24}25using System;26using System.Threading.Tasks;27using PuppeteerSharp.Tests.PageTests;28using PuppeteerSharp.Tests.Attributes;29using PuppeteerSharp.Tests.TestConstants;30{31 {32 static void Main(string[] args)33 {34 }35 }36}

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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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