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How to use Promise2 class of Microsoft.Playwright.Tests package

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

PageEvaluateTests.cs

Source:PageEvaluateTests.cs

...264        public async Task ShouldWorkWithOverwrittenPromise()265        {266            await Page.EvaluateAsync(@"() => {267              const originalPromise = window.Promise;268              class Promise2 {269                static all(...arg) {270                  return wrap(originalPromise.all(...arg));271                }272                static race(...arg) {273                  return wrap(originalPromise.race(...arg));274                }275                static resolve(...arg) {276                  return wrap(originalPromise.resolve(...arg));277                }278                constructor(f, r) {279                  this._promise = new originalPromise(f, r);280                }281                then(f, r) {282                  return wrap(this._promise.then(f, r));283                }284                catch(f) {285                  return wrap(this._promise.catch(f));286                }287                finally(f) {288                  return wrap(this._promise.finally(f));289                }290              };291              const wrap = p => {292                const result = new Promise2(() => {}, () => {});293                result._promise = p;294                return result;295              };296              window.Promise = Promise2;297              window.__Promise2 = Promise2;298            }");299            Assert.True(await Page.EvaluateAsync<bool>(@"() => {300              const p = Promise.all([Promise.race([]), new Promise(() => {}).then(() => {})]);301              return p instanceof window.__Promise2;302            }"));303            Assert.AreEqual(42, await Page.EvaluateAsync<int>("() => Promise.resolve(42)"));304        }305        [PlaywrightTest("page-evaluate.spec.ts", @"should accept ""undefined"" as one of multiple parameters")]306        public async Task ShouldAcceptUndefinedAsOneOfMultipleParameters()307        {308            //C# will send nulls309            bool result = await Page.EvaluateAsync<bool>(@"({a, b}) => {310                console.log(a);311                console.log(b);312                return Object.is (a, null) && Object.is (b, 'foo')313            }", new { a = (object)null, b = "foo" });314            Assert.True(result);315        }...

Promise2

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();11            var page = await browser.NewPageAsync();12            var promise = new Promise2(page.EvaluateAsync<int>("() => Promise.resolve(8 * 7)"));13            Console.WriteLine("Before await");14            Console.WriteLine(await promise);15            Console.WriteLine("After await");16        }17    }18}

Promise2

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Tests;3using System;4using System.Threading.Tasks;5{6    {7        static async Task Main(string[] args)8        {9            var playwright = await Playwright.CreateAsync();10            var browser = await playwright.Chromium.LaunchAsync(headless: false);11            var context = await browser.NewContextAsync();12            var page = await context.NewPageAsync();13            await page.ClickAsync("text=Google apps");14            await page.ClickAsync("text=Calculator");15            var calculator = page.Frame("id=content");16            await calculator.ClickAsync("text=1");17            await calculator.ClickAsync("text=2");18            await calculator.ClickAsync("text=3");19            await calculator.ClickAsync("text=4");20            await calculator.ClickAsync("text=5");21            await calculator.ClickAsync("text=6");22            await calculator.ClickAsync("text=7");23            await calculator.ClickAsync("text=8");24            await calculator.ClickAsync("text=9");25            await calculator.ClickAsync("text=0");26            await calculator.ClickAsync("text=+");27            await calculator.ClickAsync("text=5");28            await calculator.ClickAsync("text==");29            var result = await calculator.EvalOnSelectorAsync<string>("id=cwos", "element => element.textContent");30            Console.WriteLine($"Result is {result}");31            await browser.CloseAsync();32        }33    }34}

Promise2

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Tests;5using Microsoft.Playwright.Tests.Attributes;6using Microsoft.Playwright.Tests.Helpers;7using Microsoft.Playwright.Tests.TestServer;8using Microsoft.Playwright.Transport.Channels;9using Microsoft.Playwright.Transport.Protocol;10using Xunit;11using Xunit.Abstractions;12{13    {14        public Promise2(ITestOutputHelper output) : base(output)15        {16        }17        [PlaywrightTest("promise2.spec.ts", "should work")]18        [Fact(Timeout = TestConstants.DefaultTestTimeout)]19        public async Task ShouldWork()20        {21            var result = await Page.EvaluateAsync<int>("() => Promise.resolve(8 * 7)");22            Assert.Equal(56, result);23        }24        [PlaywrightTest("promise2.spec.ts", "should work with null")]25        [Fact(Timeout = TestConstants.DefaultTestTimeout)]26        public async Task ShouldWorkWithNull()27        {28            var result = await Page.EvaluateAsync<int?>("() => Promise.resolve(null)");29            Assert.Null(result);30        }31        [PlaywrightTest("promise2.spec.ts", "should work with undefined")]32        [Fact(Timeout = TestConstants.DefaultTestTimeout)]33        public async Task ShouldWorkWithUndefined()34        {35            var result = await Page.EvaluateAsync<int?>("() => Promise.resolve(undefined)");36            Assert.Null(result);37        }38        [PlaywrightTest("promise2.spec.ts", "should work with -0")]39        [Fact(Timeout = TestConstants.DefaultTestTimeout)]40        public async Task ShouldWorkWithNegativeZero()41        {42            var result = await Page.EvaluateAsync<int>("() => Promise.resolve(-0)");43            Assert.Equal(0, result);44        }45        [PlaywrightTest("promise2.spec.ts", "should work with Infinity")]46        [Fact(Timeout = TestConstants.DefaultTestTimeout)]47        public async Task ShouldWorkWithInfinity()48        {49            var result = await Page.EvaluateAsync<double>("() => Promise.resolve(Infinity)");50            Assert.Equal(double.PositiveInfinity, result);51        }52        [PlaywrightTest("promise2.spec.ts", "should work with -Infinity")]53        [Fact(Timeout = TestConstants.DefaultTestTimeout)]54        public async Task ShouldWorkWithNegativeInfinity()55        {56            var result = await Page.EvaluateAsync<double>("() => Promise.resolve(-Infinity)");

Promise2

Using AI Code Generation

1using Microsoft.Playwright.Tests;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            Console.WriteLine("Hello World!");9            var promise = new Promise2();10            promise.Resolve(1);11            var result = await promise;12            Console.WriteLine(result);13            Console.ReadLine();14        }15    }16}

Promise2

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            Console.WriteLine("Hello World!");10            await using var playwright = await Playwright.CreateAsync();11            await using var browser = await playwright.Chromium.LaunchAsync();12            var page = await browser.NewPageAsync();13            await page.ScreenshotAsync(new PageScreenshotOptions { Path = "google.png" });14        }15    }16}17using System;18using System.Threading.Tasks;19using Microsoft.Playwright;20using Microsoft.Playwright.Tests;21{22    {23        static async Task Main(string[] args)24        {25            Console.WriteLine("Hello World!");26            await using var playwright = await Playwright.CreateAsync();27            await using var browser = await playwright.Chromium.LaunchAsync();28            var page = await browser.NewPageAsync();29            await page.ScreenshotAsync(new PageScreenshotOptions { Path = "google.png" });30        }31    }32}33using System;34using System.Threading.Tasks;35using Microsoft.Playwright;36using Microsoft.Playwright.Tests;37{38    {39        static async Task Main(string[] args)40        {41            Console.WriteLine("Hello World!");42            await using var playwright = await Playwright.CreateAsync();43            await using var browser = await playwright.Chromium.LaunchAsync();44            var page = await browser.NewPageAsync();45            await page.ScreenshotAsync(new PageScreenshotOptions {

Promise2

Using AI Code Generation

1using Microsoft.Playwright.Tests;2using Microsoft.Playwright;3using NUnit.Framework;4using System.Threading.Tasks;5using System.Reflection;6using System.IO;7using System.Threading;8using System.Collections.Generic;9using System.Linq;10using System.Diagnostics;11using System.Text.Json;12using System.Text.Json.Serialization;13using System.Text;14using System.Text.RegularExpressions;15using System.Collections;16using System.Collections.Concurrent;17using System.Collections.ObjectModel;18using System.Collections.Specialized;19using System.Runtime.Serialization;20using System.Runtime.Serialization.Formatters.Binary;21using System.Runtime.Serialization.Formatters.Soap;22using System.Runtime.Serialization.Json;23using System.Runtime.Serialization.Xml;24using System.Runtime.Serialization.Primitives;25using System.Runtime.Serialization.Formatters;26using System.Runtime.Serialization.Configuration;27using System.Runtime.Serialization.Formatters.Tests;28using System.Runtime.Serialization.Xml;29using System.Runtime.Serialization.Json;30using System.Runtime.Serialization.Primitives;31using System.Runtime.Serialization.Formatters;32using System.Runtime.Serialization.Configuration;33using System.Runtime.Serialization.Formatters.Tests;

Promise2

Using AI Code Generation

1using Microsoft.Playwright.Tests;2using System;3using System.Threading.Tasks;4{5    static void Main(string[] args)6    {7        Console.WriteLine("Hello World!");8        Task.Run(async () =>9        {10            var p = new Promise2();11            await p;12        }).GetAwaiter().GetResult();13    }14}15using System;16using System.Threading.Tasks;17{18    {19        public Promise2()20        {21            Task.Run(async () =>22            {23                await Task.Delay(2000);24                Console.WriteLine("Promise2: done");25            });26        }27        public TaskAwaiter GetAwaiter()28        {29            return Task.Delay(2000).GetAwaiter();30        }31    }32}

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.