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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.
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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.
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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.