KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use ShouldNotLeakHandles method of Microsoft.Playwright.Tests.Promise2 class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Tests.Promise2.ShouldNotLeakHandles

PageEvaluateTests.cs

Source:PageEvaluateTests.cs

...485        {486            Assert.True(await Page.EvaluateAsync<bool>(@"() => this === window"));487        }488        [PlaywrightTest("page-evaluate.spec.ts", "should not leak handles")]489        public async Task ShouldNotLeakHandles()490        {491            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Page.EvaluateAsync<object>(@"() => handles.length"));492            StringAssert.Contains("handles", exception.Message);493        }494        [PlaywrightTest("page-evaluate.spec.ts", "should evaluate exception")]495        public async Task ShouldEvaluateException()496        {497            string exception = await Page.EvaluateAsync<string>(@"() => {498                return (function functionOnStack() {499                    return new Error('error message');500                })();501            }");502            StringAssert.Contains("Error: error message", exception);503            StringAssert.Contains("functionOnStack", exception);...

ShouldNotLeakHandles

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Microsoft.Playwright;7using Microsoft.Playwright.Tests;8using NUnit.Framework;9{10    {11        [PlaywrightTest("promise2.spec.ts", "should not leak handles")]12        public async Task ShouldNotLeakHandles()13        {14            var page = await Browser.NewPageAsync();15            var window = await page.EvaluateHandleAsync("() => window");16            var navigator = await page.EvaluateHandleAsync("() => navigator");17            GC.Collect();18            GC.WaitForPendingFinalizers();19            GC.Collect();20            Assert.AreEqual(2, await page.EvaluateAsync<int>("() => globalThis.objects.size"));21            await window.DisposeAsync();22            await navigator.DisposeAsync();23            GC.Collect();24            GC.WaitForPendingFinalizers();25            GC.Collect();26            Assert.AreEqual(0, await page.EvaluateAsync<int>("() => globalThis.objects.size"));27        }28    }29}30using System;31using System.Collections.Generic;32using System.Linq;33using System.Text;34using System.Threading.Tasks;35using Microsoft.Playwright;36using Microsoft.Playwright.Tests;37using NUnit.Framework;38{39    {40        [PlaywrightTest("promise2.spec.ts", "should not leak handles after cross-process navigation")]41        public async Task ShouldNotLeakHandlesAfterCrossProcessNavigation()42        {43            var page = await Browser.NewPageAsync();44            var window = await page.EvaluateHandleAsync("() => window");45            var navigator = await page.EvaluateHandleAsync("() => navigator");46            await page.GotoAsync(Server.CrossProcessPrefix + "/empty.html");47            GC.Collect();48            GC.WaitForPendingFinalizers();49            GC.Collect();50            Assert.AreEqual(2, await page.EvaluateAsync<int>("() => globalThis.objects.size"));51            await window.DisposeAsync();52            await navigator.DisposeAsync();53            GC.Collect();54            GC.WaitForPendingFinalizers();55            GC.Collect();56            Assert.AreEqual(0, await page.EvaluateAsync<int>("() => globalThis.objects.size"));57        }58    }59}

ShouldNotLeakHandles

Using AI Code Generation

1using Microsoft.Playwright.Tests;2using System;3using System.Collections.Generic;4using System.Text;5using System.Threading.Tasks;6{7    {8        public static void ShouldNotLeakHandles()9        {10            Console.WriteLine("Hello World!");11        }12    }13}14using Microsoft.Playwright.Tests;15using System;16using System.Collections.Generic;17using System.Text;18using System.Threading.Tasks;19{20    {21        public static void ShouldNotLeakHandles()22        {23            Console.WriteLine("Hello World!");24        }25    }26}27using Microsoft.Playwright.Tests;28using System;29using System.Collections.Generic;30using System.Text;31using System.Threading.Tasks;32{33    {34        public static void ShouldNotLeakHandles()35        {36            Console.WriteLine("Hello World!");37        }38    }39}40using Microsoft.Playwright.Tests;41using System;42using System.Collections.Generic;43using System.Text;44using System.Threading.Tasks;45{46    {47        public static void ShouldNotLeakHandles()48        {49            Console.WriteLine("Hello World!");50        }51    }52}53using Microsoft.Playwright.Tests;54using System;55using System.Collections.Generic;56using System.Text;57using System.Threading.Tasks;58{59    {60        public static void ShouldNotLeakHandles()61        {62            Console.WriteLine("Hello World!");63        }64    }65}66using Microsoft.Playwright.Tests;67using System;68using System.Collections.Generic;69using System.Text;70using System.Threading.Tasks;71{72    {73        public static void ShouldNotLeakHandles()74        {75            Console.WriteLine("Hello World!");76        }77    }78}

ShouldNotLeakHandles

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Tests;5using Microsoft.Playwright.Tests.Helpers;6using Microsoft.Playwright.Tests.TestServer;7using NUnit.Framework;8{9    {10        {11        };12        public async Task Setup()13        {14            await Playwright.InstallAsync();15        }16        public async Task ShouldNotLeakHandles()17        {18            foreach (var browserName in s_browserNames)19            {20                var playwright = await Playwright.CreateAsync();21                var browser = await playwright[browserName].LaunchAsync();22                var context = await browser.NewContextAsync();23                var page = await context.NewPageAsync();24                await page.GotoAsync(TestConstants.ServerUrl + "/grid.html");25                var handle = await page.QuerySelectorAsync(".box:nth-of-type(7)");26                var result = await page.EvaluateAsync<int>("(e, a, b) => e.offsetWidth + e.offsetHeight + a + b", handle, 1, 2);27                Assert.AreEqual(123, result);28                await browser.CloseAsync();29                await playwright.ShouldNotLeakHandlesAsync();30            }31        }32    }33}34using System;35using System.Threading.Tasks;36using Microsoft.Playwright;37using Microsoft.Playwright.Tests;38using Microsoft.Playwright.Tests.Helpers;39using Microsoft.Playwright.Tests.TestServer;40using NUnit.Framework;41{42    {43        {44        };45        public async Task Setup()46        {47            await Playwright.InstallAsync();48        }49        public async Task ShouldNotLeakHandles()50        {51            foreach (var browserName in s_browserNames)52            {53                var playwright = await Playwright.CreateAsync();54                var browser = await playwright[browserName].LaunchAsync();55                var context = await browser.NewContextAsync();56                var page = await context.NewPageAsync();57                await page.GotoAsync(TestConstants.ServerUrl + "/grid

ShouldNotLeakHandles

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Tests;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 BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            await page.ScreenshotAsync(new PageScreenshotOptions15            {16            });17            await page.CloseAsync();18            await browser.CloseAsync();19            await playwright.StopAsync();20            Promise2.ShouldNotLeakHandles();21        }22    }23}24using System;25using System.Threading.Tasks;26using Microsoft.Playwright;27using Microsoft.Playwright.Tests;28{29    {30        static async Task Main(string[] args)31        {32            using var playwright = await Playwright.CreateAsync();33            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions34            {35            });36            var page = await browser.NewPageAsync();37            await page.ScreenshotAsync(new PageScreenshotOptions38            {39            });40            await page.CloseAsync();41            await browser.CloseAsync();42            await playwright.StopAsync();43            Promise2.ShouldNotLeakHandles();44        }45    }46}47using System;48using System.Threading.Tasks;49using Microsoft.Playwright;50using Microsoft.Playwright.Tests;51{52    {53        static async Task Main(string[] args)54        {55            using var playwright = await Playwright.CreateAsync();56            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions57            {58            });59            var page = await browser.NewPageAsync();

ShouldNotLeakHandles

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Text;4using Microsoft.Playwright.Tests;5using NUnit.Framework;6{7    {8        public async Task ShouldNotLeakHandles()9        {10            await Page.GotoAsync(Server.Prefix + "/wrappedlink.html");11            await Page.EvaluateAsync("() => window['result'] = document.querySelector('a').href");12            await Page.EvaluateAsync("() => delete window['Node']");13            GC.Collect();14            GC.WaitForPendingFinalizers();15            GC.Collect();16            Assert.AreEqual(0, await Page.EvaluateAsync<int>("() => window['result']"));17        }18    }19}

ShouldNotLeakHandles

Using AI Code Generation

1using System;2using System.Linq;3using System.Threading.Tasks;4using Microsoft.Playwright;5using Microsoft.Playwright.Tests;6using Microsoft.Playwright.Tests.Helpers;7using Xunit;8using Xunit.Abstractions;9{10    {11        public Promise2(ITestOutputHelper output) : base(output)12        {13        }14        [PlaywrightTest("promise2.spec.ts", "should not leak handles")]15        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]16        public async Task ShouldNotLeakHandles()17        {18            await using var context = await Browser.NewContextAsync();19            var page = await context.NewPageAsync();20            await page.GotoAsync(Server.EmptyPage);21            await page.EvaluateAsync("() => window['foo'] = 1");22            await page.EvaluateAsync("() => delete window['foo']");23            await context.CloseAsync();24            GC.Collect();25            GC.WaitForPendingFinalizers();26            GC.Collect();27            var handles = await Page.EvaluateAsync<int>("() => globalThis.__playwrightTest.__inflightObjects.size");28            Assert.Equal(0, handles);29        }30    }31}32using System;33using System.Linq;34using System.Threading.Tasks;35using Microsoft.Playwright;36using Microsoft.Playwright.Tests;37using Microsoft.Playwright.Tests.Helpers;38using Xunit;39using Xunit.Abstractions;40{41    {42        public Promise3(ITestOutputHelper output) : base(output)43        {44        }45        [PlaywrightTest("promise3.spec.ts", "should not leak handles")]46        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]47        public async Task ShouldNotLeakHandles()48        {49            await using var context = await Browser.NewContextAsync();50            var page = await context.NewPageAsync();51            await page.GotoAsync(Server.EmptyPage);52            await page.EvaluateAsync("() => window['foo'] = 1");53            await page.EvaluateAsync("() => delete window['foo']");54            await context.CloseAsync();55            GC.Collect();56            GC.WaitForPendingFinalizers();

ShouldNotLeakHandles

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Threading.Tasks;5using Microsoft.Playwright;6using Microsoft.Playwright.Tests;7using Microsoft.Playwright.Tests.Helpers;8using NUnit.Framework;9{10    {11        public async Task ShouldNotLeakHandles()12        {13            int count = 1000;14            for (int i = 0; i < count; i++)15            {

ShouldNotLeakHandles

Using AI Code Generation

1using Microsoft.Playwright.Tests;2using NUnit.Framework;3using System;4using System.Collections.Generic;5using System.Linq;6using System.Text;7using System.Threading.Tasks;8{9    [Parallelizable(ParallelScope.Self)]10    {11        public 5(ITestOutputHelper output) : base(output)12        {13        }14        public async Task BeforeAll()15        {16            await base.BeforeAll();17        }18        public async Task AfterAll()19        {20            await base.AfterAll();21        }22        public async Task BeforeEach()23        {24            await base.BeforeEach();25        }26        public async Task AfterEach()27        {28            await base.AfterEach();29        }30        public async Task ShouldNotLeakHandles()31        {32            var page = await Context.NewPageAsync();33            await page.SetContentAsync(@"34            </html>");35            var second = await page.QuerySelectorAsync(".second");36            var third = await page.QuerySelectorAsync(".third");

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.