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

How to use PageExposeFunctionAsync method of Microsoft.Playwright.Tests.PageExposeFunctionTests class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync

PageExposeFunctionAsync

Using AI Code Generation

1{2    using System;3    using System.Collections.Generic;4    using System.Linq;5    using System.Text;6    using System.Threading.Tasks;7    using Microsoft.Playwright;8    using Xunit;9    using Xunit.Abstractions;10    [Collection(TestConstants.TestFixtureBrowserCollectionName)]11    {12        internal PageExposeFunctionTests(ITestOutputHelper output) : base(output)13        {14        }15        public async Task ShouldWork()16        {17            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);18            var result = await Page.EvaluateAsync<int>("async () => compute(9, 4)");19            Assert.Equal(36, result);20        }21        public async Task ShouldWorkWithComplexObjects()22        {23            await Page.ExposeFunctionAsync("complexObject", new { foo = "bar!" });24            var result = await Page.EvaluateAsync<string>("async () => complexObject.foo");25            Assert.Equal("bar!", result);26        }27        public async Task ShouldWorkWithString()28        {29            await Page.ExposeFunctionAsync("foo", "bar");30            var result = await Page.EvaluateAsync<string>("async () => foo");31            Assert.Equal("bar", result);32        }

PageExposeFunctionAsync

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Text;4using System.Threading.Tasks;5using Microsoft.Playwright;6using Xunit;7using Xunit.Abstractions;8{9    {10        internal PageExposeFunctionTests(ITestOutputHelper output) : base(output)11        {12        }13        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]14        public async Task ShouldWork()15        {16            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);17            var result = await Page.EvaluateAsync<int>("async function() {" +18                "return await compute(9, 4);" +19            "}");20            Assert.Equal(36, result);21        }22    }23}24using System;25using System.Collections.Generic;26using System.Text;27using System.Threading.Tasks;28using Microsoft.Playwright;29using Xunit;30using Xunit.Abstractions;31{32    {33        internal PageExposeBindingTests(ITestOutputHelper output) : base(output)34        {35        }36        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]37        public async Task ShouldWork()38        {39            await Page.ExposeBindingAsync("compute", (int a, int b) => Task.FromResult((object)(a * b)));40            var result = await Page.EvaluateAsync<int>("async function() {" +41                "return await window.compute(9, 4);" +42            "}");

PageExposeFunctionAsync

Using AI Code Generation

1{2    using System;3    using System.Collections.Generic;4    using System.Text;5    using System.Threading.Tasks;6    using Microsoft.Playwright;7    using Microsoft.Playwright.NUnit;8    using NUnit.Framework;9    {10        [PlaywrightTest("page-expose-function.spec.ts", "should work")]11        [Test, Timeout(TestConstants.DefaultTestTimeout)]12        public async Task ShouldWork()13        {14            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);15            Assert.AreEqual(6, await Page.EvaluateAsync<int>("async function(){return await compute(2, 3); }"));16        }17    }18}

PageExposeFunctionAsync

Using AI Code Generation

1{2    using System;3    using System.Collections.Generic;4    using System.Linq;5    using System.Text;6    using System.Threading;7    using System.Threading.Tasks;8    using Microsoft.Playwright;9    using Xunit;10    using Xunit.Abstractions;11    {12        public PageExposeFunctionTests(ITestOutputHelper output) : base(output)13        {14        }15        [PlaywrightTest("page-expose-function.spec.ts", "should work")]16        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]17        public async Task ShouldWork()18        {19            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);20            var result = await Page.EvaluateAsync<int>("async () => compute(9, 4)");21            Assert.Equal(36, result);22        }23        [PlaywrightTest("page-expose-function.spec.ts", "should work with complex objects")]24        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]25        public async Task ShouldWorkWithComplexObjects()26        {27            await Page.ExposeFunctionAsync("complexObject", new { foo = "bar!" });28            var result = await Page.EvaluateAsync<string>("async () => complexObject.foo");29            Assert.Equal("bar!", result);30        }31        [PlaywrightTest("page-expose-function.spec.ts", "should work with ElementHandle")]32        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]33        public async Task ShouldWorkWithElementHandle()34        {35            await Page.SetContentAsync("<section>42</section>");36            await Page.ExposeFunctionAsync("getSectionContent", (IElementHandle e) => e.TextContentAsync());37            var result = await Page.EvaluateAsync<string>("async () => getSectionContent(document.querySelector('section'))");38            Assert.Equal("42", result);39        }40        [PlaywrightTest("page-expose-function.spec.ts", "should throw for duplicate registrations")]41        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]42        public async Task ShouldThrowForDuplicateRegistrations()43        {44            await Page.ExposeFunctionAsync("woof", () => { });45            var exception = await Assert.ThrowsAsync<PlaywrightSharpException>(() => Page.ExposeFunctionAsync("woof", () => { }));46            Assert.Equal("Function \"woof\" has been already

PageExposeFunctionAsync

Using AI Code Generation

1var page = await context.NewPageAsync();2await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));3var result = await page.EvaluateAsync<int>("async () => compute(9, 4)");4Console.WriteLine(result);5var page = await context.NewPageAsync();6await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));7var result = await page.EvaluateAsync<int>("async () => compute(9, 4)");8Console.WriteLine(result);9var page = await context.NewPageAsync();10await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));11var result = await page.EvaluateAsync<int>("async () => compute(9, 4)");12Console.WriteLine(result);13var page = await context.NewPageAsync();14await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));15var result = await page.EvaluateAsync<int>("async () => compute(9, 4)");16Console.WriteLine(result);17var page = await context.NewPageAsync();18await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));19var result = await page.EvaluateAsync<int>("async () => compute(9, 4)");20Console.WriteLine(result);21var page = await context.NewPageAsync();22await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));23var result = await page.EvaluateAsync<int>("async () => compute(9, 4)");24Console.WriteLine(result);

PageExposeFunctionAsync

Using AI Code Generation

1var page = await context.NewPageAsync();2await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));3var result = await page.EvaluateAsync<int>("async () => {\r4  return await compute(9, 4);\r5}");6Console.WriteLine(result);7var page = await context.NewPageAsync();8await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));9var result = await page.EvaluateAsync<int>("async () => {\r10  return await compute(9, 4);\r11}");12Console.WriteLine(result);13var page = await context.NewPageAsync();14await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));15var result = await page.EvaluateAsync<int>("async () => {\r16  return await compute(9, 4);\r17}");18Console.WriteLine(result);19var page = await context.NewPageAsync();20await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));21var result = await page.EvaluateAsync<int>("async () => {\r22  return await compute(9, 4);\r23}");24Console.WriteLine(result);25var page = await context.NewPageAsync();26await page.ExposeFunctionAsync("compute", (Func<int, int, int>)((a, b) => a * b));27var result = await page.EvaluateAsync<int>("async () => {\r28  return await compute(9, 4);\r29}");30Console.WriteLine(result);31var page = await context.NewPageAsync();32await page.ExposeFunctionAsync("compute", (Func<int, int

PageExposeFunctionAsync

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Microsoft.Playwright.Tests;7using NUnit.Framework;8using PlaywrightSharp;9using PlaywrightSharp.Tests.Attributes;10using PlaywrightSharp.Tests.BaseTests;11using PlaywrightSharp.Tests.Helpers;12using PlaywrightSharp.Tests.TestServer;13{14    [Parallelizable(ParallelScope.Self)]15    {16        [PlaywrightTest("page-expose-function.spec.ts", "should work")]17        [Test, Timeout(TestConstants.DefaultTestTimeout)]18        public async Task ShouldWork()19        {20            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);21            var result = await Page.EvaluateAsync<int>("async function() { return await compute(9, 4); }");22            Assert.AreEqual(36, result);23        }24        [PlaywrightTest("page-expose-function.spec.ts", "should work on frames")]25        [Test, Timeout(TestConstants.DefaultTestTimeout)]26        public async Task ShouldWorkOnFrames()27        {28            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);29            await Page.GotoAsync(TestConstants.ServerUrl + "/frames/nested-frames.html");30            var frame = Page.FirstChildFrame().FirstChildFrame().FirstChildFrame();31            var result = await frame.EvaluateAsync<int>("async function() { return await compute(9, 4); }");32            Assert.AreEqual(36, result);33        }34        [PlaywrightTest("page-expose-function.spec.ts", "should throw in secondary context")]35        [Test, Timeout(TestConstants.DefaultTestTimeout)]36        public async Task ShouldThrowInSecondaryContext()37        {38            await Page.GotoAsync(TestConstants.EmptyPage);39            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightSharpException>(() => Page.MainFrame.EvaluateAsync(@"() => {40                const iframe = document.createElement('iframe');41                document.body.appendChild(iframe);42                return iframe.contentWindow['compute'](9, 4);43            }"));44            StringAssert.Contains("Function \"compute\" has not been registered", exception.Message);45        }46        [PlaywrightTest("page-expose-function.spec.ts", "should survive cross-process navigation")]47        [Test, Timeout(TestConstants.DefaultTestTimeout)]

PageExposeFunctionAsync

Using AI Code Generation

1Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()2Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()3Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()4Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()5Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()6Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()7Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()8Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()9Microsoft.Playwright.Tests.PageExposeFunctionTests.PageExposeFunctionAsync()

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.