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

How to use pageExposeFunctionAsync method of Microsoft.Playwright.Tests.BrowserContextExposeFunctionTests class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Tests.BrowserContextExposeFunctionTests.pageExposeFunctionAsync

pageExposeFunctionAsync

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Text;4using System.Threading.Tasks;5using NUnit.Framework;6{7    {8        [PlaywrightTest("browsercontext-expose-function.spec.ts", "should work")]9        [Test, Timeout(TestConstants.DefaultTestTimeout)]10        public async Task ShouldWork()11        {12            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);13            var result = await Page.EvaluateAsync<int>("async () => compute(9, 4)");14            Assert.AreEqual(36, result);15        }16        [PlaywrightTest("browsercontext-expose-function.spec.ts", "should work with complex objects")]17        [Test, Timeout(TestConstants.DefaultTestTimeout)]18        public async Task ShouldWorkWithComplexObjects()19        {20            await Page.ExposeFunctionAsync("woof", new { name = "doggo" });21            var result = await Page.EvaluateAsync<string>("async () => woof.name");22            Assert.AreEqual("doggo", result);23        }24        [PlaywrightTest("browsercontext-expose-function.spec.ts", "should work with ElementHandle")]25        [Test, Timeout(TestConstants.DefaultTestTimeout)]26        public async Task ShouldWorkWithElementHandle()27        {28            await Page.ExposeFunctionAsync("getElementProperty", (ElementHandle element, string propertyName) => element.GetPropertyAsync(propertyName));29            await Page.SetContentAsync("<section id=\"testAttribute\">43543</section>");30            var element = await Page.QuerySelectorAsync("section");31            var result = await Page.EvaluateAsync<int>("async () => getElementProperty(document.getElementById('testAttribute'), 'id').then(e => e.jsonValue())");32            Assert.AreEqual(43543, result);33        }34        [PlaywrightTest("browsercontext-expose-function.spec.ts", "should throw for conflicting window values")]35        [Test, Timeout(TestConstants.DefaultTestTimeout)]36        public async Task ShouldThrowForConflictingWindowValues()37        {38            await Page.SetContentAsync("<div>hello</div>");39            await Page.ExposeFunctionAsync("conflictingFunction", () => { });40            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Page.ExposeFunctionAsync("conflictingFunction", () => { }));41            Assert.AreEqual("Failed to add window.conflictingFunction: window[\"conflictingFunction\"] already exists", exception.Message);

pageExposeFunctionAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Tests;5using Xunit;6using Xunit.Abstractions;7{8    {9        internal BrowserContextExposeFunctionTests(ITestOutputHelper output) : base(output)10        {11        }12        [Fact(Timeout=PlaywrightSharp.Playwright.DefaultTimeout)]13        public async Task ShouldWork()14        {15            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);16            var result = await Page.EvaluateAsync<int>("async()=>{return await compute(9, 4);}");17            Assert.Equal(36, result);18        }19    }20}21{22    {23        internal BrowserContextExposeFunctionTests(ITestOutputHelper output) : base(output)24        {25        }26    }27}

pageExposeFunctionAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Collections.Generic;4using System.Text;5using System.Threading.Tasks;6{7    {8        static async Task Main(string[] args)9        {10            using var playwright = await Playwright.CreateAsync();11            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions12            {13            });14            var page = await browser.NewPageAsync();15            await page.ExposeFunctionAsync("add", (int a, int b) => a + b);16            var result = await page.EvaluateAsync<int>("async() => { return await add(5, 6); }");17            Console.WriteLine(result);18        }19    }20}21using Microsoft.Playwright;22using System;23using System.Collections.Generic;24using System.Text;25using System.Threading.Tasks;26{27    {28        static async Task Main(string[] args)29        {30            using var playwright = await Playwright.CreateAsync();31            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions32            {33            });34            var page = await browser.NewPageAsync();35            await page.ExposeFunctionAsync("add", (int a, int b) => a + b);36            var result = await page.EvaluateAsync<int>("async() => { return await add(5, 6); }");37            Console.WriteLine(result);38        }39    }40}41using Microsoft.Playwright;42using System;43using System.Collections.Generic;44using System.Text;45using System.Threading.Tasks;46{47    {48        static async Task Main(string[] args)49        {50            using var playwright = await Playwright.CreateAsync();51            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions52            {53            });54            var page = await browser.NewPageAsync();

pageExposeFunctionAsync

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Tests;3using System;4using System.Collections.Generic;5using System.Text;6using System.Threading.Tasks;7using Xunit;8using Xunit.Abstractions;9{10    [Collection(TestConstants.TestFixtureBrowserCollectionName)]11    {12        public BrowserContextExposeFunctionTests(ITestOutputHelper output) : base(output)13        {14        }15        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]16        public async Task ShouldWork()17        {18            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);19            var result = await Page.EvaluateAsync<int>("async function() { return await compute(9, 4); }()");20            Assert.Equal(36, result);21        }22        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]23        public async Task ShouldThrowIfUnderlyingElementWasDisposed()24        {25            await Page.ExposeFunctionAsync("compute", (int a, int b) => a * b);26            await Page.CloseAsync();27            var exception = await Assert.ThrowsAsync<PlaywrightSharpException>(() => Page.EvaluateAsync<int>("async function() { return await compute(9, 4); }()"));28            Assert.Equal("Function has been disposed", exception.Message);29        }30        [Fact(Timeout = PlaywrightSharp.Playwright.DefaultTimeout)]

pageExposeFunctionAsync

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            await using var playwright = await Playwright.CreateAsync();10            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions{Headless = false});11            var page = await browser.NewPageAsync();12            await page.ExposeFunctionAsync("add", (int a, int b) => a + b);13            var result = await page.EvaluateAsync<int>("() => add(5, 6)");14            Console.WriteLine(result);15        }16    }17}18using System;19using System.Threading.Tasks;20using Microsoft.Playwright;21using Microsoft.Playwright.Tests;22{23    {24        static async Task Main(string[] args)25        {26            await using var playwright = await Playwright.CreateAsync();27            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions{Headless = false});28            var page = await browser.NewPageAsync();29            await page.ExposeFunctionAsync("add", (int a, int b) => a + b);30            var result = await page.EvaluateAsync<int>("() => add(5, 6)");31            Console.WriteLine(result);32        }33    }34}35using System;36using System.Threading.Tasks;37using Microsoft.Playwright;38using Microsoft.Playwright.Tests;39{40    {41        static async Task Main(string[] args)42        {

pageExposeFunctionAsync

Using AI Code Generation

1var page = await context.NewPageAsync();2await page.ExposeFunctionAsync("compute", (int a, int b) => a * b);3var result = await page.EvaluateAsync<int>("async () => compute(9, 4)");4Console.WriteLine(result);5var page = await context.NewPageAsync();6page.ExposeFunction("compute", (int a, int 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", (int a, int b) => a * b);11var result = await page.EvaluateAsync<int>("async () => compute(9, 4)");12Console.WriteLine(result);13var page = await context.NewPageAsync();14page.ExposeFunction("compute", (int a, int 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", (int a, int b) => a * b);19var result = await page.EvaluateAsync<int>("async ()

pageExposeFunctionAsync

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Microsoft.Playwright;7using Xunit;8using Xunit.Abstractions;9{10    [Collection(TestConstants.TestFixtureBrowserCollectionName)]11    {12        public BrowserContextExposeFunctionTests(ITestOutputHelper output) : base(output)13        {14        }15        [PlaywrightTest("browsercontext-expose-function.spec.ts", "should work")]16        [Fact(Timeout = TestConstants.DefaultTestTimeout)]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 function() { return await compute(9, 4); }");21            Assert.Equal(36, result);22        }23        [PlaywrightTest("browsercontext-expose-function.spec.ts", "should work with complex objects")]24        [Fact(Timeout = TestConstants.DefaultTestTimeout)]25        public async Task ShouldWorkWithComplexObjects()26        {27            await Page.ExposeFunctionAsync("complexObject", new { foo = "bar!" });28            var result = await Page.EvaluateAsync<string>("async function() { return await complexObject.foo; }");29            Assert.Equal("bar!", result);30        }31        [PlaywrightTest("browsercontext-expose-function.spec.ts", "should work with ElementHandle arguments")]32        [Fact(Timeout = TestConstants.DefaultTestTimeout)]33        public async Task ShouldWorkWithElementHandleArguments()34        {35            await Page.SetContentAsync("<section>42</section>");36            await Page.ExposeFunctionAsync("getInnerText", (IElementHandle e) => e.InnerTextAsync());37            var result = await Page.EvaluateAsync<string>("async function() { return await getInnerText(document.querySelector('section')); }");38            Assert.Equal("42", result);39        }40        [PlaywrightTest("browsercontext-expose-function.spec.ts", "should work with null arguments")]41        [Fact(Timeout = TestConstants.DefaultTestTimeout)]42        public async Task ShouldWorkWithNullArguments()43        {44            await Page.ExposeFunctionAsync("

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.