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How to use EvalOnSelectorTests class of Microsoft.Playwright.Tests package

Best Playwright-dotnet code snippet using Microsoft.Playwright.Tests.EvalOnSelectorTests

EvalOnSelectorTests.cs

Source:EvalOnSelectorTests.cs

...25using Microsoft.Playwright.NUnit;26using NUnit.Framework;27namespace Microsoft.Playwright.Tests28{29    public class EvalOnSelectorTests : PageTestEx30    {31        [PlaywrightTest("eval-on-selector.spec.ts", "should work with css selector")]32        public async Task ShouldWorkWithCssSelector()33        {34            await Page.SetContentAsync("<section id=\"testAttribute\">43543</section>");35            string idAttribute = await Page.EvalOnSelectorAsync<string>("css=section", "e => e.id");36            Assert.AreEqual("testAttribute", idAttribute);37        }38        [PlaywrightTest("eval-on-selector.spec.ts", "should work with id selector")]39        public async Task ShouldWorkWithIdSelector()40        {41            await Page.SetContentAsync("<section id=\"testAttribute\">43543</section>");42            string idAttribute = await Page.EvalOnSelectorAsync<string>("id=testAttribute", "e => e.id");43            Assert.AreEqual("testAttribute", idAttribute);...

EvalOnSelectorTests

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Tests;3using System.Threading.Tasks;4{5    static async Task Main(string[] args)6    {7        using var playwright = await Playwright.CreateAsync();8        await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });9        var page = await browser.NewPageAsync();10        await page.EvalOnSelectorAsync("input[name='q']", "element => element.value = 'Hello'");11    }12}13using Microsoft.Playwright;14using Microsoft.Playwright.Tests;15using System.Threading.Tasks;16{17    static async Task Main(string[] args)18    {19        using var playwright = await Playwright.CreateAsync();20        await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });21        var page = await browser.NewPageAsync();22        await page.EvalOnSelectorAsync("input[name='q']", "element => element.value = 'Hello'");23    }24}25using Microsoft.Playwright;26using Microsoft.Playwright.Tests;27using System.Threading.Tasks;28{29    static async Task Main(string[] args)30    {31        using var playwright = await Playwright.CreateAsync();32        await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });33        var page = await browser.NewPageAsync();34        await page.EvalOnSelectorAsync("input[name='q']", "element => element.value = 'Hello'");35    }36}37using Microsoft.Playwright;38using Microsoft.Playwright.Tests;39using System.Threading.Tasks;40{41    static async Task Main(string[] args)42    {43        using var playwright = await Playwright.CreateAsync();44        await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });45        var page = await browser.NewPageAsync();

EvalOnSelectorTests

Using AI Code Generation

1using System;2using System.IO;3using System.Threading.Tasks;4using Microsoft.Playwright.NUnit;5using NUnit.Framework;6{7    [Parallelizable(ParallelScope.Self)]8    {9        [PlaywrightTest("eval-on-selector.spec.ts", "should work")]10        [Test, Timeout(TestConstants.DefaultTestTimeout)]11        public async Task ShouldWork()12        {13            await Page.SetContentAsync("<section>42</section>");14            var result = await Page.EvalOnSelectorAsync<int>("css=section", "e => e.textContent");15            Assert.AreEqual(42, result);16        }17    }18}19at Microsoft.Playwright.Tests.EvalOnSelectorTests.ShouldWork() in C:\Users\username\source\repos\PlaywrightTest\PlaywrightTest\5.cs:line 2520Microsoft.Playwright.PlaywrightException : Evaluation failed: TypeError: Cannot read properties of null (reading 'textContent')21I tried to use the same code in C# but it didn’t work. I am using the latest version of PlaywrightSharp (1.16.0) and the latest version of Playwright (1.16.0). I am using NUnit as a test framework. I am using .Net 5.0. Is there a way to make this work in C#?

EvalOnSelectorTests

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Tests;3using Microsoft.Playwright.Tests.BaseTests;4using System;5using System.Collections.Generic;6using System.Linq;7using System.Text;8using System.Threading.Tasks;9{10    {11        static async Task Main(string[] args)12        {13            Console.WriteLine("Hello World!");14            var playwright = await Playwright.CreateAsync();15            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false });16            var page = await browser.NewPageAsync();17            await page.TypeAsync("input[name=q]", "Hello World");18            await page.ClickAsync("input[name=btnK]");19            await page.WaitForSelectorAsync("text=Hello World");20            await page.ClickAsync("text=Hello World");21            await page.WaitForSelectorAsync("text=Hello World - Google Search");22            await page.TypeAsync("input[name=q]", "Hello World");23            await page.ClickAsync("input[name=btnK]");24            await page.WaitForSelectorAsync("text=Hello World");25            await page.ClickAsync("text=Hello World");26            await page.WaitForSelectorAsync("text=Hello World - Google Search");27            await page.TypeAsync("input[name=q]", "Hello World");28            await page.ClickAsync("input[name=btnK]");29            await page.WaitForSelectorAsync("text=Hello World");30            await page.ClickAsync("text=Hello World");31            await page.WaitForSelectorAsync("text=Hello World - Google Search");32            await page.TypeAsync("input[name=q]", "Hello World");33            await page.ClickAsync("input[name=btnK]");34            await page.WaitForSelectorAsync("text=Hello World");35            await page.ClickAsync("text=Hello World");36            await page.WaitForSelectorAsync("text=Hello World - Google Search");37            await page.TypeAsync("input[name=q]", "Hello World");38            await page.ClickAsync("input[name=btnK]");39            await page.WaitForSelectorAsync("text=Hello World");40            await page.ClickAsync("text=Hello World");41            await page.WaitForSelectorAsync("text=Hello World - Google Search");

EvalOnSelectorTests

Using AI Code Generation

1using Microsoft.Playwright.Tests;2using Microsoft.Playwright;3var playwright = await Playwright.CreateAsync();4var browser = await playwright.Chromium.LaunchAsync();5var page = await browser.NewPageAsync();6var evalOnSelectorTests = new EvalOnSelectorTests();7await evalOnSelectorTests.EvalOnSelectorAsync(page);8await browser.CloseAsync();9using Microsoft.Playwright.Tests;10using Microsoft.Playwright;11var playwright = await Playwright.CreateAsync();12var browser = await playwright.Chromium.LaunchAsync();13var page = await browser.NewPageAsync();14var evalOnSelectorTests = new EvalOnSelectorTests();15await evalOnSelectorTests.EvalOnSelectorAllAsync(page);16await browser.CloseAsync();17using Microsoft.Playwright.Tests;18using Microsoft.Playwright;19var playwright = await Playwright.CreateAsync();20var browser = await playwright.Chromium.LaunchAsync();21var page = await browser.NewPageAsync();22var evalOnSelectorTests = new EvalOnSelectorTests();23await evalOnSelectorTests.EvalOnSelectorAllHandlesAsync(page);24await browser.CloseAsync();25using Microsoft.Playwright.Tests;26using Microsoft.Playwright;27var playwright = await Playwright.CreateAsync();28var browser = await playwright.Chromium.LaunchAsync();29var page = await browser.NewPageAsync();30var evalOnSelectorTests = new EvalOnSelectorTests();31await evalOnSelectorTests.EvalOnSelectorAllHandlesWithElementHandleAsync(page);32await browser.CloseAsync();33using Microsoft.Playwright.Tests;34using Microsoft.Playwright;35var playwright = await Playwright.CreateAsync();36var browser = await playwright.Chromium.LaunchAsync();37var page = await browser.NewPageAsync();38var evalOnSelectorTests = new EvalOnSelectorTests();

EvalOnSelectorTests

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Tests;3using System;4using System.Threading.Tasks;5{6    {7        static async Task Main(string[] args)8        {9            using var playwright = await Playwright.CreateAsync();10            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var evalOnSelectorTests = new EvalOnSelectorTests(page);15            await evalOnSelectorTests.EvalOnSelectorAsync();16        }17    }18}

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Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
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