How to use Tracing method of Microsoft.Playwright.Core.Tracing class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.Tracing.Tracing

BrowserContext.cs

Source:BrowserContext.cs

...40    {41        private readonly TaskCompletionSource<bool> _closeTcs = new();42        private readonly Dictionary<string, Delegate> _bindings = new();43        private readonly BrowserContextInitializer _initializer;44        private readonly ITracing _tracing;45        private List<RouteSetting> _routes = new();46        private float? _defaultNavigationTimeout;47        private float? _defaultTimeout;48        internal BrowserContext(IChannelOwner parent, string guid, BrowserContextInitializer initializer) : base(parent, guid)49        {50            Channel = new(guid, parent.Connection, this);51            Channel.Close += (_, _) => OnClose();52            Channel.Page += Channel_OnPage;53            Channel.BindingCall += Channel_BindingCall;54            Channel.Route += Channel_Route;55            Channel.RequestFailed += (_, e) =>56            {57                e.Request.Failure = e.FailureText;58                e.Request.Timing.ResponseEnd = e.ResponseEndTiming;59                RequestFailed?.Invoke(this, e.Request);60                e.Page?.FireRequestFailed(e.Request);61                e.Response?.ReportFinished(e.FailureText);62            };63            Channel.Request += (_, e) =>64            {65                Request?.Invoke(this, e.Request);66                e.Page?.FireRequest(e.Request);67            };68            Channel.RequestFinished += (_, e) =>69            {70                e.Request.Timing.ResponseEnd = e.ResponseEndTiming;71                e.Request.Sizes = e.RequestSizes;72                RequestFinished?.Invoke(this, e.Request);73                e.Page?.FireRequestFinished(e.Request);74                e.Response?.ReportFinished();75            };76            Channel.Response += (_, e) =>77            {78                Response?.Invoke(this, e.Response);79                e.Page?.FireResponse(e.Response);80            };81            _tracing = initializer.Tracing;82            _initializer = initializer;83            Browser = parent as IBrowser;84        }85        public event EventHandler<IBrowserContext> Close;86        public event EventHandler<IPage> Page;87        public event EventHandler<IRequest> Request;88        public event EventHandler<IRequest> RequestFailed;89        public event EventHandler<IRequest> RequestFinished;90        public event EventHandler<IResponse> Response;91        public ITracing Tracing92        {93            get => _tracing;94            set => throw new NotSupportedException();95        }96        ChannelBase IChannelOwner.Channel => Channel;97        IChannel<BrowserContext> IChannelOwner<BrowserContext>.Channel => Channel;98        public IBrowser Browser { get; }99        public IReadOnlyList<IPage> Pages => PagesList;100        internal float DefaultNavigationTimeout101        {102            get => _defaultNavigationTimeout ?? PlaywrightImpl.DefaultTimeout;103            set104            {105                _defaultNavigationTimeout = value;...

BrowserType.cs

Source:BrowserType.cs

...124                RecordVideoSize = options.RecordVideoSize,125                RecordHarPath = options.RecordHarPath,126                RecordHarOmitContent = options.RecordHarOmitContent,127            };128            ((Core.Tracing)context.Tracing).LocalUtils = Playwright.Utils;129            return context;130        }131        public async Task<IBrowser> ConnectAsync(string wsEndpoint, BrowserTypeConnectOptions options = null)132        {133            options ??= new BrowserTypeConnectOptions();134            var headers = new List<KeyValuePair<string, string>>(options.Headers ?? new Dictionary<string, string>())135            {136                new KeyValuePair<string, string>("x-playwright-browser", Name),137            }.ToDictionary(pair => pair.Key, pair => pair.Value);138            JsonPipe pipe = (await _channel.ConnectAsync(wsEndpoint: wsEndpoint, headers: headers, slowMo: options.SlowMo, timeout: options.Timeout).ConfigureAwait(false)).Object;139            void ClosePipe()140            {141                pipe.CloseAsync().IgnoreException();142            }...

BrowserChannel.cs

Source:BrowserChannel.cs

...141                "newContext",142                args);143        }144        internal Task CloseAsync() => Connection.SendMessageToServerAsync<BrowserContextChannel>(Guid, "close", null);145        internal Task StartTracingAsync(IPage page, bool screenshots, string path, IEnumerable<string> categories)146        {147            var args = new Dictionary<string, object>148            {149                ["screenshots"] = screenshots,150                ["path"] = path,151                ["page"] = page,152                ["categories"] = categories,153            };154            return Connection.SendMessageToServerAsync(Guid, "crStartTracing", args);155        }156        internal async Task<string> StopTracingAsync()157            => (await Connection.SendMessageToServerAsync(Guid, "crStopTracing", null).ConfigureAwait(false))?.GetProperty("binary").ToString();158    }159}...

Tracing.cs

Source:Tracing.cs

...26using Microsoft.Playwright.Transport.Channels;27using Microsoft.Playwright.Transport.Protocol;28namespace Microsoft.Playwright.Core29{30    internal class Tracing : ChannelOwnerBase, IChannelOwner<Tracing>, ITracing31    {32        private readonly TracingChannel _channel;33        public Tracing(IChannelOwner parent, string guid) : base(parent, guid)34        {35            _channel = new(guid, parent.Connection, this);36        }37        internal LocalUtils LocalUtils { get; set; }38        ChannelBase IChannelOwner.Channel => _channel;39        IChannel<Tracing> IChannelOwner<Tracing>.Channel => _channel;40        public async Task StartAsync(TracingStartOptions options = default)41        {42            await _channel.TracingStartAsync(43                        name: options?.Name,44                        title: options?.Title,45                        screenshots: options?.Screenshots,46                        snapshots: options?.Snapshots,47                        sources: options?.Sources).ConfigureAwait(false);48            await _channel.StartChunkAsync(options?.Title).ConfigureAwait(false);49        }50        public Task StartChunkAsync() => StartChunkAsync();51        public Task StartChunkAsync(TracingStartChunkOptions options) => _channel.StartChunkAsync(title: options?.Title);52        public async Task StopChunkAsync(TracingStopChunkOptions options = null)53        {54            await DoStopChunkAsync(filePath: options.Path).ConfigureAwait(false);55        }56        public async Task StopAsync(TracingStopOptions options = default)57        {58            await StopChunkAsync(new() { Path = options?.Path }).ConfigureAwait(false);59            await _channel.TracingStopAsync().ConfigureAwait(false);60        }61        private async Task DoStopChunkAsync(string filePath)62        {63            bool isLocal = !_channel.Connection.IsRemote;64            var mode = "doNotSave";65            if (!string.IsNullOrEmpty(filePath))66            {67                if (isLocal)68                {69                    mode = "compressTraceAndSources";70                }71                else72                {73                    mode = "compressTrace";...

TracingChannel.cs

Source:TracingChannel.cs

...27using Microsoft.Playwright.Core;28using Microsoft.Playwright.Helpers;29namespace Microsoft.Playwright.Transport.Channels30{31    internal class TracingChannel : Channel<Tracing>32    {33        public TracingChannel(string guid, Connection connection, Tracing owner) : base(guid, connection, owner)34        {35        }36        internal Task TracingStartAsync(string name, string title, bool? screenshots, bool? snapshots, bool? sources)37            => Connection.SendMessageToServerAsync(38                Guid,39                "tracingStart",40                new Dictionary<string, object>41                {42                    ["name"] = name,43                    ["title"] = title,44                    ["screenshots"] = screenshots,45                    ["snapshots"] = snapshots,46                    ["sources"] = sources,47                });48        internal Task TracingStopAsync()49            => Connection.SendMessageToServerAsync(50                Guid,51                "tracingStop");52        internal Task StartChunkAsync(string title = null)53            => Connection.SendMessageToServerAsync(Guid, "tracingStartChunk", new Dictionary<string, object>54            {55                ["title"] = title,56            });57        internal async Task<(Artifact Artifact, List<NameValueEntry> SourceEntries)> StopChunkAsync(string mode)58        {59            var result = await Connection.SendMessageToServerAsync(Guid, "tracingStopChunk", new Dictionary<string, object>60            {61                ["mode"] = mode,62            }).ConfigureAwait(false);...

BrowserContextInitializer.cs

Source:BrowserContextInitializer.cs

...27    internal class BrowserContextInitializer : EventTargetInitializer28    {29        public bool IsChromium { get; set; }30        public Core.APIRequestContext APIRequestContext { get; set; }31        public Core.Tracing Tracing { get; set; }32    }33}...

BasePageModel.cs

Source:BasePageModel.cs

...18        {19            BasePagePath = basePagePath;20            FileSaveBasePath = fileSaveBasePath;21            Context = await Browser.NewContextAsync();22            await Context.Tracing.StartAsync(new TracingStartOptions23            {24                Screenshots = true,25                Snapshots = true,26                Sources = true27            });28            Page = await Context.NewPageAsync();29        }30        public async ValueTask DisposeAsync()31        {32            await Context.Tracing.StopAsync(new TracingStopOptions33            {34                Path = $"{FileSaveBasePath}\\{TraceFileName}.zip"35            });36            await Context.DisposeAsync();37        }38    }39}...

APIRequestContextInitializer.cs

Source:APIRequestContextInitializer.cs

...25namespace Microsoft.Playwright.Transport.Protocol26{27    internal class APIRequestContextInitializer28    {29        public Core.Tracing Tracing { get; set; }30    }31}...

Tracing

Using AI Code Generation

1using System;2using System.IO;3using System.Threading.Tasks;4using Microsoft.Playwright;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            await page.ScreenshotAsync("google.png");13            await using var fs = new FileStream("trace.json", FileMode.Create);14            await page.Tracing.StartAsync(new TracingStartOptions { Screenshots = true, Snapshots = true });15            await page.ScreenshotAsync("bing.png");16            await page.Tracing.StopAsync(fs);17            Console.WriteLine("Hello World!");18        }19    }20}21using System;22using System.IO;23using System.Threading.Tasks;24using Microsoft.Playwright;25{26    {27        static async Task Main(string[] args)28        {29            using var playwright = await Playwright.CreateAsync();30            await using var browser = await playwright.Chromium.LaunchAsync();31            var page = await browser.NewPageAsync();32            await page.ScreenshotAsync("google.png");33            await page.SetRequestInterceptionAsync(true);34            page.Request += (_, e) => e.Request.ContinueAsync();35            await page.ScreenshotAsync("bing.png");36            Console.WriteLine("Hello World!");37        }38    }39}40using System;41using System.IO;42using System.Threading.Tasks;43using Microsoft.Playwright;44{45    {46        static async Task Main(string[] args)47        {48            using var playwright = await Playwright.CreateAsync();49            await using var browser = await playwright.Chromium.LaunchAsync();50            var page = await browser.NewPageAsync();51            await page.ScreenshotAsync("google.png");52            await page.SetRequestInterceptionAsync(true);

Tracing

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Core;3using System;4using System.Collections.Generic;5using System.Linq;6using System.Text;7using System.Threading.Tasks;8{9    {10        static async Task Main(string[] args)11        {12            using var playwright = await Playwright.CreateAsync();13            var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false });14            var page = await browser.NewPageAsync();15            var tracing = page.Context.Tracing;16            await tracing.StartAsync(new TracingStartOptions { Name = "trace" });17            await tracing.StopAsync(new TracingStopOptions { Path = "trace.json" });18        }19    }20}

Tracing

Using AI Code Generation

1using System;2using System.IO;3using System.Threading.Tasks;4using Microsoft.Playwright;5using Microsoft.Playwright.Core;6{7    {8        static async Task Main(string[] args)9        {10            await using var playwright = await Playwright.CreateAsync();11            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions12            {13            });14            var page = await browser.NewPageAsync();15            var tracePath = Path.Combine(Directory.GetCurrentDirectory(), "trace.zip");16            await page.Tracing.StartAsync(new TracingStartOptions17            {18            });19            await page.Tracing.StopAsync(new TracingStopOptions20            {21            });22            Console.WriteLine($"Trace is saved at {tracePath}");23        }24    }25}26using System;27using System.IO;28using System.Threading.Tasks;29using Microsoft.Playwright;30using Microsoft.Playwright.Core;31{32    {33        static async Task Main(string[] args)34        {35            await using var playwright = await Playwright.CreateAsync();36            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions37            {38            });39            var page = await browser.NewPageAsync();40            var tracePath = Path.Combine(Directory.GetCurrentDirectory(), "trace.zip");41            await page.Tracing.StartAsync(new TracingStartOptions42            {43            });44            await page.Tracing.StopAsync(new TracingStopOptions45            {46            });47            Console.WriteLine($"Trace is saved at {tracePath}");48        }49    }50}51using System;52using System.IO;53using System.Threading.Tasks;54using Microsoft.Playwright;55using Microsoft.Playwright.Core;56{57    {58        static async Task Main(string[] args

Tracing

Using AI Code Generation

1using Microsoft.Playwright.Core;2var tracing = await browser.NewContextAsync().NewPageAsync().Tracing;3await tracing.StartAsync(new TracingStartOptions4{5});6await tracing.StopAsync(new TracingStopOptions7{8});

Tracing

Using AI Code Generation

1using Microsoft.Playwright.Core;2Tracing tracing = new Tracing();3tracing.StartAsync(new TracingStartOptions4{5});6using Microsoft.Playwright.Core;7Tracing tracing = new Tracing();8tracing.StopAsync();9using Microsoft.Playwright.Core;10Tracing tracing = new Tracing();11tracing.GetTracingPath();12using Microsoft.Playwright.Core;13Tracing tracing = new Tracing();14tracing.GetTracingPath();15using Microsoft.Playwright.Core;16Tracing tracing = new Tracing();17tracing.GetTracingPath();18using Microsoft.Playwright.Core;19Tracing tracing = new Tracing();20tracing.GetTracingPath();21using Microsoft.Playwright.Core;22Tracing tracing = new Tracing();

Tracing

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3using System.Collections.Generic;4using System.Text;5{6    {7        public static void TracingMethod()8        {9            Tracing tracing = new Tracing();10            tracing.StartAsync();11            tracing.StopAsync();12        }13    }14}15using Microsoft.Playwright.Core;16using System;17using System.Collections.Generic;18using System.Text;19{20    {21        public static void WaitForEventMethod()22        {23            IPage page = new IPage();24            page.WaitForEventAsync("event");25        }26    }27}28using Microsoft.Playwright.Core;29using System;30using System.Collections.Generic;31using System.Text;32{33    {34        public static void WaitForLoadStateMethod()35        {36            IPage page = new IPage();37            page.WaitForLoadStateAsync("loadstate");38        }39    }40}41using Microsoft.Playwright.Core;42using System;43using System.Collections.Generic;44using System.Text;45{46    {47        public static void WaitForNavigationMethod()48        {49            IPage page = new IPage();50            page.WaitForNavigationAsync();51        }52    }53}54using Microsoft.Playwright.Core;55using System;56using System.Collections.Generic;57using System.Text;58{59    {60        public static void WaitForRequestMethod()61        {62            IPage page = new IPage();63            page.WaitForRequestAsync("url");64        }65    }66}

Tracing

Using AI Code Generation

1using System;2using System.IO;3using System.Threading.Tasks;4using Microsoft.Playwright;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 BrowserTypeLaunchOptions11            {12            });13            var context = await browser.NewContextAsync();14            var page = await context.NewPageAsync();15            await context.Tracing.StartAsync(new TracingStartOptions16            {17            });18            var trace = await context.Tracing.StopAsync();19            File.WriteAllBytes("trace.zip", trace);20            await browser.CloseAsync();21        }22    }23}24using System;25using System.IO;26using System.Threading.Tasks;27using Microsoft.Playwright;28{29    {30        static async Task Main(string[] args)31        {32            await using var playwright = await Playwright.CreateAsync();33            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions34            {35            });36            var context = await browser.NewContextAsync();37            var page = await context.NewPageAsync();38            await context.Tracing.StartAsync(new TracingStartOptions39            {40            });41            var trace = await context.Tracing.StopAsync();42            File.WriteAllBytes("trace.zip", trace);43            await browser.CloseAsync();44        }45    }46}

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.