How to use ShouldThrowErrorIfNoElementIsFound method of Microsoft.Playwright.Tests.EvalOnSelectorTests class

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

EvalOnSelectorTests.cs

Source:EvalOnSelectorTests.cs

...120            string text = await Page.EvalOnSelectorAsync<string>("section", "(e, div) => e.textContent + div.textContent", divHandle);121            Assert.AreEqual("hello world", text);122        }123        [PlaywrightTest("eval-on-selector.spec.ts", "should throw error if no element is found")]124        public async Task ShouldThrowErrorIfNoElementIsFound()125        {126            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(()127                => Page.EvalOnSelectorAsync("section", "e => e.id"));128            StringAssert.Contains("failed to find element matching selector \"section\"", exception.Message);129        }130        [PlaywrightTest("eval-on-selector.spec.ts", "should support >> syntax")]131        public async Task ShouldSupportDoubleGreaterThanSyntax()132        {133            await Page.SetContentAsync("<section><div>hello</div></section>");134            string text = await Page.EvalOnSelectorAsync<string>("css=section >> css=div", "(e, suffix) => e.textContent + suffix", " world!");135            Assert.AreEqual("hello world!", text);136        }137        [PlaywrightTest("eval-on-selector.spec.ts", "should support >> syntax with different engines")]138        public async Task ShouldSupportDoubleGreaterThanSyntaxWithDifferentEngines()...

ShouldThrowErrorIfNoElementIsFound

Using AI Code Generation

1{2    [Parallelizable(ParallelScope.Self)]3    {4        [PlaywrightTest("eval-on-selector.spec.ts", "should throw error if no element is found")]5        [Test, Timeout(TestConstants.DefaultTestTimeout)]6        public async Task ShouldThrowErrorIfNoElementIsFound()7        {8            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Page.EvalOnSelectorAsync("button", "button => button"));9            StringAssert.Contains("failed to find element matching selector \"button\"", exception.Message);10        }11    }12}13at Microsoft.Playwright.Tests.EvalOnSelectorTests.ShouldThrowErrorIfNoElementIsFound() in C:\Users\user\source\repos\PlaywrightSharp\src\PlaywrightSharp.Tests\EvalOnSelectorTests.cs:line 29

ShouldThrowErrorIfNoElementIsFound

Using AI Code Generation

1{2    {3        [PlaywrightTest("eval-on-selector.spec.ts", "should throw error if no element is found")]4        [Fact(Timeout = TestConstants.DefaultTestTimeout)]5        public async Task ShouldThrowErrorIfNoElementIsFound()6        {7            await Page.SetContentAsync("<html><body><div>hello</div></body></html>");8            var exception = await Assert.ThrowsAsync<PlaywrightException>(() => Page.EvalOnSelectorAsync("non-existing", "element => element.textContent"));9            StringAssert.Contains("failed to find element matching selector \"non-existing\"", exception.Message);10        }11    }12}13{14    {15        public Task<IJSHandle> EvalOnSelectorAsync(string selector, string script, object arg = null)16            => Page.EvalOnSelectorAsync(selector, script, arg);17    }18}19Task<IJSHandle> EvalOnSelectorAsync(string selector, string script, object arg = null)20var divCount = await Page.EvalOnSelectorAsync("div", "divs => divs.length");21Page.EvalOnSelectorAllAsync(string selector, string script, object arg = null)22Page.EvalOnSelectorAsync(string selector, string script, object arg = null)23Page.EvalOnSelectorAllAsync(string selector, string script, object arg = null)24{25    {26        [PlaywrightTest("eval-on-selector.spec.ts", "should work with strict CSP policy")]27        [Fact(

ShouldThrowErrorIfNoElementIsFound

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6{7    {8        [PlaywrightTest("eval-on-selector.spec.ts", "should throw error if no element is found")]9        public async Task ShouldThrowErrorIfNoElementIsFound()10        {11            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Page.EvalOnSelectorAsync("button", "button => button.innerText"));12            StringAssert.Contains("failed to find element matching selector \"button\"", exception.Message);13        }14    }15}

ShouldThrowErrorIfNoElementIsFound

Using AI Code Generation

1using Microsoft.Playwright.Tests;2{3    {4        [PlaywrightTest("eval-on-selector.spec.ts", "should throw error if no element is found")]5        [Fact(Timeout=PlaywrightSharp.Playwright.DefaultTimeout)]6        public async Task ShouldThrowErrorIfNoElementIsFound()7        {8            var exception = await Assert.ThrowsAsync<PlaywrightSharp.PlaywrightException>(() => Page.EvalOnSelectorAsync("foo", "element => element.textContent"));9            StringAssert.Contains("failed to find element matching selector \"foo\"", exception.Message);10        }11    }12}13at Microsoft.Playwright.Tests.EvalOnSelectorTests.ShouldThrowErrorIfNoElementIsFound() in C:\Users\kalyan\source\repos\PlaywrightSharp\src\PlaywrightSharp.Tests\EvalOnSelectorTests.cs:line 3214at Microsoft.Playwright.Tests.EvalOnSelectorTests.ShouldWork() in C:\Users\kalyan\source\repos\PlaywrightSharp\src\PlaywrightSharp.Tests\EvalOnSelectorTests.cs:line 16

ShouldThrowErrorIfNoElementIsFound

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6{7    {8        public void Main()9        {10            var instance = new Microsoft.Playwright.Tests.EvalOnSelectorTests();11            instance.ShouldThrowErrorIfNoElementIsFound();12        }13    }14}

ShouldThrowErrorIfNoElementIsFound

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NUnit.Framework;7{8    [Parallelizable(ParallelScope.Self)]9    {10        public EvalOnSelectorTests(ITestOutputHelper output) : base(output)11        {12        }13        [PlaywrightTest("eval-on-selector.spec.ts", "should throw error if no element is found")]14        [Test, Timeout(TestConstants.DefaultTestTimeout)]15        public async Task ShouldThrowErrorIfNoElementIsFound()16        {17            await Page.SetContentAsync(@"18    ");19            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Page.EvalOnSelectorAsync("non-existing", "() => 123"));20            StringAssert.Contains("failed to find element matching selector \"non-existin

ShouldThrowErrorIfNoElementIsFound

Using AI Code Generation

1await page.EvalOnSelectorAsync("nonexisting", "element => element.textContent");2await page.EvalOnSelectorAllAsync("nonexisting", "element => element.textContent");3await page.EvalOnSelectorAllAsync("nonexisting", "element => element.textContent");4await page.EvalOnSelectorAllAsync("nonexisting", "element => element.textContent");5await page.EvalOnSelectorAllAsync("nonexisting", "element => element.textContent");6await page.EvalOnSelectorAllAsync("nonexisting", "element => element.textContent");7await page.EvalOnSelectorAllAsync("nonexisting", "element => element.textContent");8await page.EvalOnSelectorAllAsync("nonexisting", "element => element.textContent");

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
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.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.