How to use ShouldWarnOnNestedObjectHandles method of PuppeteerSharp.Tests.JSHandleTests.PageEvaluateHandle class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Tests.JSHandleTests.PageEvaluateHandle.ShouldWarnOnNestedObjectHandles

PageEvaluateHandle.cs

Source: PageEvaluateHandle.cs Github

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...36 Assert.True(isFive);37 }38 [PuppeteerTest("jshandle.spec.ts", "Page.evaluateHandle", "should warn on nested object handles")]39 [PuppeteerFact]40 public async Task ShouldWarnOnNestedObjectHandles()41 {42 var aHandle = await Page.EvaluateFunctionHandleAsync("() => document.body");43 var exception = await Assert.ThrowsAsync<EvaluationFailedException>(() =>44 Page.EvaluateFunctionHandleAsync("(opts) => opts.elem.querySelector('p')", new { aHandle }));45 Assert.Contains("Are you passing a nested JSHandle?", exception.Message);46 }47 [PuppeteerTest("jshandle.spec.ts", "Page.evaluateHandle", "should accept object handle to unserializable value")]48 [PuppeteerFact]49 public async Task ShouldAcceptObjectHandleToUnserializableValue()50 {51 var aHandle = await Page.EvaluateFunctionHandleAsync("() => Infinity");52 Assert.True(await Page.EvaluateFunctionAsync<bool>(53 "(e) => Object.is(e, Infinity)",54 aHandle));...

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ShouldWarnOnNestedObjectHandles

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1using System;2using System.Collections.Generic;3using System.Text;4using System.Threading.Tasks;5using PuppeteerSharp.Tests.Attributes;6using Xunit;7using Xunit.Abstractions;8{9 [Collection(TestConstants.TestFixtureCollectionName)]10 {11 public PageEvaluateHandleTests(ITestOutputHelper output) : base(output)12 {13 }14 [PuppeteerTest("jshandle.spec.ts", "JSHandle", "should not warn on nested object handles")]15 public async Task ShouldNotWarnOnNestedObjectHandles()16 {17 {18 };19 var handle = await Page.EvaluateHandleAsync("obj => obj", obj);20 Assert.Equal(obj, await handle.JsonValueAsync());21 Assert.Equal(obj, await Page.EvaluateAsync("obj => obj", handle));22 }23 }24}25using System;26using System.Collections.Generic;27using System.Text;28using System.Threading.Tasks;29using PuppeteerSharp.Tests.Attributes;30using Xunit;31using Xunit.Abstractions;32{33 [Collection(TestConstants.TestFixtureCollectionName)]34 {35 public PageEvaluateHandleTests(ITestOutputHelper output) : base(output)36 {37 }38 [PuppeteerTest("jshandle.spec.ts", "JSHandle", "should work with window handle")]39 public async Task ShouldWorkWithWindowHandle()40 {41 var handle = await Page.EvaluateHandleAsync("() => window");42 Assert.Equal(await Page.EvaluateAsync("window => window", handle), await Page.EvaluateAsync("window => window"));43 }44 }45}46using System;47using System.Collections.Generic;48using System.Text;49using System.Threading.Tasks;50using PuppeteerSharp.Tests.Attributes;51using Xunit;52using Xunit.Abstractions;53{54 [Collection(TestConstants.TestFixtureCollectionName)]

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ShouldWarnOnNestedObjectHandles

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1using System;2using System.Collections.Generic;3using System.Threading.Tasks;4using PuppeteerSharp;5{6 {7 public async Task ShouldWarnOnNestedObjectHandles()8 {9 var consoleMessageTask = Page.WaitForConsoleMessageAsync();10 await Page.EvaluateExpressionAsync("() => console.dir({ window })");11 var consoleMessage = await consoleMessageTask;12 Assert.Equal("JSHandle@object", consoleMessage.Text);13 }14 }15}16 <message><![CDATA[Assert.Equal() Failure17 ↓ (pos 0)18 ↑ (pos 0)]]></​message>19 <stack-trace><![CDATA[ at PuppeteerSharp.Tests.JSHandleTests.PageEvaluateHandle.ShouldWarnOnNestedObjectHandles() in 5.cs:line 1920 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()21 at Xunit.Sdk.RecordException(Exception ex, String callerFilePath, Int32 callerLineNumber, String callerMemberName)22 at Xunit.Sdk.AssertRecord.Exception(Action action)23 at Xunit.Sdk.Assert.Equal[T](T expected, T actual, IEqualityComparer`1 comparer)24 at PuppeteerSharp.Tests.JSHandleTests.PageEvaluateHandle.ShouldWarnOnNestedObjectHandles() in 5

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ShouldWarnOnNestedObjectHandles

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1var page = await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);2 var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });3 var page = await browser.NewPageAsync();4 var bodyHandle = await page.QuerySelectorAsync( "body" );5 var html = await page.EvaluateFunctionAsync( "body => body.innerHTML" , bodyHandle);6 await browser.CloseAsync();

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ShouldWarnOnNestedObjectHandles

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1var page = await Browser.NewPageAsync();2await page.GoToAsync(TestConstants.ServerUrl + "/​nested-frames.html");3var aHandle = await page.EvaluateHandleAsync("() => document.body");4var exception = await Assert.ThrowsAsync<ArgumentException>(async () =>5{6 await page.EvaluateHandleAsync("body => body.innerHTML", aHandle);7});8Assert.Contains("JSHandles can be evaluated only in the context they were created", exception.Message);

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ShouldWarnOnNestedObjectHandles

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1using System.Threading.Tasks;2using PuppeteerSharp;3using PuppeteerSharp.Tests.Attributes;4{5 [Collection(TestConstants.TestFixtureCollectionName)]6 {7 [PuppeteerTest("jshandle.spec.ts", "JSHandle", "should work with nested JSHandles")]8 public async Task ShouldWorkWithNestedJSHandles()9 {10 var aHandle = await Page.EvaluateHandleAsync("() => Promise.resolve(5)");11 var resultHandle = await Page.EvaluateHandleAsync("(a) => Promise.resolve(a)", aHandle);12 Assert.Equal(5, await Page.EvaluateFunctionAsync<int>("(a) => a", resultHandle));13 }14 [PuppeteerTest("jshandle.spec.ts", "JSHandle", "should work with null as an argument")]15 public async Task ShouldWorkWithNullAsAnArgument()16 {17 var aHandle = await Page.EvaluateHandleAsync("() => Promise.resolve(5)");18 var resultHandle = await Page.EvaluateHandleAsync("(a, b) => Promise.resolve(b)", aHandle, null);19 Assert.Null(await Page.EvaluateFunctionAsync<int?>("(a) => a", resultHandle));20 }21 [PuppeteerTest("jshandle.spec.ts", "JSHandle", "should return undefined for objects with symbols")]22 public async Task ShouldReturnUndefinedForObjectsWithSymbols()23 {24 var aHandle = await Page.EvaluateHandleAsync("() => Promise.resolve({ a: Symbol('foo') })");25 var resultHandle = await Page.EvaluateHandleAsync("(a) => Promise.resolve(a)", aHandle);26 Assert.Null(await Page.EvaluateFunctionAsync<int?>("(a) => a", resultHandle));27 }28 [PuppeteerTest("jshandle.spec.ts", "JSHandle", "should warn on nested object handles")]29 public async Task ShouldWarnOnNestedObjectHandles()30 {31 var aHandle = await Page.EvaluateHandleAsync("() => Promise.resolve({})");32 var resultHandle = await Page.EvaluateHandleAsync("(a) => Promise.resolve(a)", aHandle);33 var exception = await Assert.ThrowsAsync<PuppeteerException>(()

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ShouldWarnOnNestedObjectHandles

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1using System;2using System.Threading.Tasks;3using Newtonsoft.Json;4using PuppeteerSharp;5{6 {7 [PuppeteerTest("jshandle.spec.ts", "JSHandle", "should warn on nested object handles")]8 public async Task ShouldWarnOnNestedObjectHandles()9 {10 var obj = new { foo = 123 };11 var handle = await Page.EvaluateHandleAsync("obj => obj", obj);12 var json = JsonConvert.SerializeObject(handle);13 Assert.True(json.Contains("ObjectHandle"));14 }15 }16}

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StackOverFlow community discussions

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Get Result of document.querySelectorAll in PuppeteerSharp

using below,

using var page = browser.NewPageAsync().Result;

page.TypeAsync("input[name='elementname']", valuetobeset).Wait();
https://stackoverflow.com/questions/67332554/set-input-value-with-puppeteer-sharp

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