Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use EventHandler method of PuppeteerSharp.Tests.PageTests.PageEventsPageErrorTests class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Tests.PageTests.PageEventsPageErrorTests.EventHandler

PageEventsPageErrorTests.cs

Source:PageEventsPageErrorTests.cs

...15        [SkipBrowserFact(skipFirefox: true)]16        public async Task ShouldFire()17        {18            string error = null;19            void EventHandler(object sender, PageErrorEventArgs e)20            {21                error = e.Message;22                Page.PageError -= EventHandler;23            }24            Page.PageError += EventHandler;25            await Task.WhenAll(26                Page.GoToAsync(TestConstants.ServerUrl + "/error.html"),27                WaitEvent(Page.Client, "Runtime.exceptionThrown")28            );29            Assert.Contains("Fancy", error);30        }31    }32}

EventHandler

Using AI Code Generation

1{2    [Collection(TestConstants.TestFixtureCollectionName)]3    {4        public async Task ShouldFire()5        {6            await Page.GoToAsync(TestConstants.EmptyPage);7            Page.PageError += (sender, e) =>8            {9                Assert.Contains("Fancy error!", e.Message);10            };11            await Page.EvaluateFunctionAsync(@"() => {12                setTimeout(() => {13                    window._errorFired = true;14                    throw new Error('Fancy error!');15                }, 0);16            }");17            Assert.True(await Page.EvaluateFunctionAsync<bool>("() => window._errorFired"));18        }19    }20}21{22    [Collection(TestConstants.TestFixtureCollectionName)]23    {24        public async Task ShouldFire()25        {26            await Page.GoToAsync(TestConstants.EmptyPage);27            Page.Popup += (sender, e) =>28            {29                Assert.Equal(TestConstants.CrossProcessUrl + "popup/window-open.html", e.Page.Url);30            };31            var popupTask = Page.WaitForPopupAsync();32            await Task.WhenAll(33                Page.EvaluateFunctionAsync(@"() => {34                    window['_popup'] = window.open('about:blank');35                }")36            );37            await popupTask.Result.WaitForLoadStateAsync(LoadState.Networkidle0);38        }39    }40}41{42    [Collection(TestConstants.TestFixtureCollectionName)]43    {44        public async Task ShouldFire()45        {46            Page.Request += (sender, e) =>47            {48                Assert.Equal(TestConstants.EmptyPage, e.Request.Url);49            };50            await Page.GoToAsync(TestConstants.EmptyPage);51        }52    }53}54{55    [Collection(TestConstants.TestFixtureCollectionName)]

EventHandler

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp.Tests.Attributes;4using Xunit;5using Xunit.Abstractions;6{7    [Collection(TestConstants.TestFixtureCollectionName)]8    {9        public PageEventsPageErrorTests(ITestOutputHelper output) : base(output)10        {11        }12        [PuppeteerTest("page.spec.ts", "Page.Events.PageError", "should fire")]13        public async Task ShouldFire()14        {15            var errorTask = new TaskCompletionSource<string>();16            Page.PageError += (sender, e) => errorTask.TrySetResult(e);17            await Page.GoToAsync(TestConstants.ServerUrl + "/error.html");18            var error = await errorTask.Task;19            Assert.Contains("Fancy error!", error);20        }21        [PuppeteerTest("page.spec.ts", "Page.Events.PageError", "should contain stack trace")]22        public async Task ShouldContainStackTrace()23        {24            var errorTask = new TaskCompletionSource<string>();25            Page.PageError += (sender, e) => errorTask.TrySetResult(e);26            await Page.GoToAsync(TestConstants.ServerUrl + "/error.html");27            var error = await errorTask.Task;28            Assert.Contains("error.html", error);29        }30        [PuppeteerTest("page.spec.ts", "Page.Events.PageError", "should not fire for window.onerror")]31        public async Task ShouldNotFireForWindowOnerror()32        {33            var errorTask = new TaskCompletionSource<string>();34            Page.PageError += (sender, e) => errorTask.TrySetResult(e);35            await Page.EvaluateFunctionAsync(@"() => {36                window.onerror = () => {};37                setTimeout(() => {38                    throw new Error('Fancy error!');39                }, 0);40            }");41            await Page.WaitForTimeoutAsync(1000);42            Assert.Null(await errorTask.Task);43        }44    }45}46   at PuppeteerSharp.CDPSession.SendAsync(String method, Object args)47   at PuppeteerSharp.Page.GoToAsync(String url, WaitUntilNavigation waitUntil, Nullable`1 timeout)48   at PuppeteerSharp.Tests.PageTests.PageEventsPageErrorTests.ShouldFire() in C

EventHandler

Using AI Code Generation

1{2    [Collection("PuppeteerLoaderFixture collection")]3    {4        public async Task ShouldFire()5        {6            var error = new TaskCompletionSource<Exception>();7            Page.PageError += (sender, e) => error.TrySetResult(e);8            await Page.GoToAsync(TestConstants.ServerUrl + "/error.html");9            Assert.Equal("Fancy error!", (await error.Task).Message);10        }11    }12}13{14    [Collection("PuppeteerLoaderFixture collection")]15    {16        public async Task ShouldFire()17        {18            var error = new TaskCompletionSource<Exception>();19            Page.PageError += (sender, e) => error.TrySetResult(e);20            await Page.GoToAsync(TestConstants.ServerUrl + "/error.html");21            Assert.Equal("Fancy error!", (await error.Task).Message);22        }23    }24}25{26    [Collection("PuppeteerLoaderFixture collection")]27    {28        public async Task ShouldFire()29        {30            var error = new TaskCompletionSource<Exception>();31            Page.PageError += (sender, e) => error.TrySetResult(e);32            await Page.GoToAsync(TestConstants.ServerUrl + "/error.html");33            Assert.Equal("Fancy error!", (await error.Task).Message);34        }35    }36}

EventHandler

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Xunit;4using Xunit.Abstractions;5using PuppeteerSharp.Tests.Attributes;6using PuppeteerSharp.Xunit;7using System.Threading;8using System.Diagnostics;9{10    [Collection(TestConstants.TestFixtureCollectionName)]11    {12        public PageEventsPageErrorTests(ITestOutputHelper output) : base(output)13        {14        }15        [PuppeteerTest("page.spec.ts", "Page.Events.PageError", "should throw if page crashes")]16        public async Task ShouldThrowIfPageCrashes()17        {18            var exception = await Assert.ThrowsAnyAsync<Exception>(async () => await Page.EvaluateFunctionAsync("() => { setTimeout(() => { throw new Error('Page crashed!'); }, 0); }"));19            Assert.Contains("Page crashed!", exception.Message);20        }21        [PuppeteerTest("page.spec.ts", "Page.Events.PageError", "should throw if page crashes")]22        public async Task ShouldThrowIfPageCrashes2()23        {24            var exception = await Assert.ThrowsAnyAsync<Exception>(async () => await Page.EvaluateFunctionAsync("() => { setTimeout(() => { throw new Error('Page crashed!'); }, 0); }"));25            Assert.Contains("Page crashed!", exception.Message);26        }27        [PuppeteerTest("page.spec.ts", "Page.Events.PageError", "should throw if page crashes")]28        public async Task ShouldThrowIfPageCrashes3()29        {30            var exception = await Assert.ThrowsAnyAsync<Exception>(async () => await Page.EvaluateFunctionAsync("() => { setTimeout(() => { throw new Error('Page crashed!'); }, 0); }"));31            Assert.Contains("Page crashed!", exception.Message);32        }33        [PuppeteerTest("page.spec.ts", "Page.Events.PageError", "should throw if page crashes")]34        public async Task ShouldThrowIfPageCrashes4()35        {36            var exception = await Assert.ThrowsAnyAsync<Exception>(async () => await Page.EvaluateFunctionAsync("() => { setTimeout(() => { throw new Error('Page crashed!'); }, 0); }"));37            Assert.Contains("Page crashed!", exception.Message);38        }

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.