How to use JSCoverage class of PuppeteerSharp.PageCoverage package

Best Puppeteer-sharp code snippet using PuppeteerSharp.PageCoverage.JSCoverage

JSCoverageTests.cs

Source:JSCoverageTests.cs Github

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...5using Newtonsoft.Json;6using PuppeteerSharp.PageCoverage;7using Xunit;8using Xunit.Abstractions;9namespace PuppeteerSharp.Tests.JSCoverageTests10{11 [Collection("PuppeteerLoaderFixture collection")]12 public class JSCoverageTests : PuppeteerPageBaseTest13 {14 public JSCoverageTests(ITestOutputHelper output) : base(output)15 {16 }17 [Fact]18 public async Task ShouldWork()19 {20 await Page.Coverage.StartJSCoverageAsync();21 await Page.GoToAsync(TestConstants.ServerUrl + "/jscoverage/simple.html");22 var coverage = await Page.Coverage.StopJSCoverageAsync();23 Assert.Single(coverage);24 Assert.Contains("/jscoverage/simple.html", coverage[0].Url);25 Assert.Equal(new CoverageEntryRange[]26 {27 new CoverageEntryRange28 {29 Start = 0,30 End = 1731 },32 new CoverageEntryRange33 {34 Start = 35,35 End = 6136 },37 }, coverage[0].Ranges);38 }39 [Fact]40 public async Task ShouldReportSourceUrls()41 {42 await Page.Coverage.StartJSCoverageAsync();43 await Page.GoToAsync(TestConstants.ServerUrl + "/jscoverage/sourceurl.html");44 var coverage = await Page.Coverage.StopJSCoverageAsync();45 Assert.Single(coverage);46 Assert.Equal("nicename.js", coverage[0].Url);47 }48 [Fact]49 public async Task ShouldIgnoreAnonymousScripts()50 {51 await Page.Coverage.StartJSCoverageAsync();52 await Page.GoToAsync(TestConstants.EmptyPage);53 await Page.EvaluateExpressionAsync("console.log(1);");54 var coverage = await Page.Coverage.StopJSCoverageAsync();55 Assert.Empty(coverage);56 }57 [Fact]58 public async Task ShouldReportMultipleScripts()59 {60 await Page.Coverage.StartJSCoverageAsync();61 await Page.GoToAsync(TestConstants.ServerUrl + "/jscoverage/multiple.html");62 var coverage = await Page.Coverage.StopJSCoverageAsync();63 Assert.Equal(2, coverage.Length);64 var orderedList = coverage.OrderBy(c => c.Url);65 Assert.Contains("/jscoverage/script1.js", orderedList.ElementAt(0).Url);66 Assert.Contains("/jscoverage/script2.js", orderedList.ElementAt(1).Url);67 }68 [Fact]69 public async Task ShouldReportRightRanges()70 {71 await Page.Coverage.StartJSCoverageAsync();72 await Page.GoToAsync(TestConstants.ServerUrl + "/jscoverage/ranges.html");73 var coverage = await Page.Coverage.StopJSCoverageAsync();74 Assert.Single(coverage);75 var entry = coverage[0];76 Assert.Single(entry.Ranges);77 var range = entry.Ranges[0];78 Assert.Equal("console.log('used!');", entry.Text.Substring(range.Start, range.End - range.Start));79 }80 [Fact]81 public async Task ShouldReportScriptsThatHaveNoCoverage()82 {83 await Page.Coverage.StartJSCoverageAsync();84 await Page.GoToAsync(TestConstants.ServerUrl + "/jscoverage/unused.html");85 var coverage = await Page.Coverage.StopJSCoverageAsync();86 Assert.Single(coverage);87 var entry = coverage[0];88 Assert.Contains("unused.html", entry.Url);89 Assert.Empty(entry.Ranges);90 }91 [Fact]92 public async Task ShouldWorkWithConditionals()93 {94 const string involved = @"[95 {96 ""Url"": ""http://localhost:<PORT>/jscoverage/involved.html"",97 ""Ranges"": [98 {99 ""Start"": 0,100 ""End"": 35101 },102 {103 ""Start"": 50,104 ""End"": 100105 },106 {107 ""Start"": 107,108 ""End"": 141109 },110 {111 ""Start"": 148,112 ""End"": 160113 },114 {115 ""Start"": 168,116 ""End"": 207117 }118 ],119 ""Text"": ""\nfunction foo() {\n if (1 > 2)\n console.log(1);\n if (1 < 2)\n console.log(2);\n let x = 1 > 2 ? 'foo' : 'bar';\n let y = 1 < 2 ? 'foo' : 'bar';\n let z = () => {};\n let q = () => {};\n q();\n}\n\nfoo();\n""120 }121 ]";122 await Page.Coverage.StartJSCoverageAsync();123 await Page.GoToAsync(TestConstants.ServerUrl + "/jscoverage/involved.html");124 var coverage = await Page.Coverage.StopJSCoverageAsync();125 Assert.Equal(126 TestUtils.CompressText(involved),127 Regex.Replace(TestUtils.CompressText(JsonConvert.SerializeObject(coverage)), @"\d{4}\/", "<PORT>/"));128 }129 }130}...

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JSCoverage.cs

Source:JSCoverage.cs Github

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...6using PuppeteerSharp.Helpers;7using PuppeteerSharp.Messaging;8namespace PuppeteerSharp.PageCoverage9{10 internal class JSCoverage11 {12 private readonly CDPSession _client;13 private readonly Dictionary<string, string> _scriptURLs;14 private readonly Dictionary<string, string> _scriptSources;15 private readonly ILogger _logger;16 private bool _enabled;17 private bool _resetOnNavigation;18 private bool _reportAnonymousScripts;19 public JSCoverage(CDPSession client)20 {21 _client = client;22 _enabled = false;23 _scriptURLs = new Dictionary<string, string>();24 _scriptSources = new Dictionary<string, string>();25 _logger = _client.Connection.LoggerFactory.CreateLogger<JSCoverage>();26 _resetOnNavigation = false;27 }28 internal Task StartAsync(CoverageStartOptions options)29 {30 if (_enabled)31 {32 throw new InvalidOperationException("JSCoverage is already enabled");33 }34 _resetOnNavigation = options.ResetOnNavigation;35 _reportAnonymousScripts = options.ReportAnonymousScripts;36 _enabled = true;37 _scriptURLs.Clear();38 _scriptSources.Clear();39 _client.MessageReceived += client_MessageReceived;40 return Task.WhenAll(41 _client.SendAsync("Profiler.enable"),42 _client.SendAsync("Profiler.startPreciseCoverage", new { callCount = false, detailed = true }),43 _client.SendAsync("Debugger.enable"),44 _client.SendAsync("Debugger.setSkipAllPauses", new { skip = true })45 );46 }47 internal async Task<CoverageEntry[]> StopAsync()48 {49 if (!_enabled)50 {51 throw new InvalidOperationException("JSCoverage is not enabled");52 }53 _enabled = false;54 var profileResponseTask = _client.SendAsync<ProfilerTakePreciseCoverageResponse>("Profiler.takePreciseCoverage");55 await Task.WhenAll(56 profileResponseTask,57 _client.SendAsync("Profiler.stopPreciseCoverage"),58 _client.SendAsync("Profiler.disable"),59 _client.SendAsync("Debugger.disable")60 ).ConfigureAwait(false);61 _client.MessageReceived -= client_MessageReceived;62 var coverage = new List<CoverageEntry>();63 foreach (var entry in profileResponseTask.Result.Result)64 {65 _scriptURLs.TryGetValue(entry.ScriptId, out var url);...

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Coverage.cs

Source:Coverage.cs Github

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...8 /// gathers information about parts of JavaScript and CSS that were used by the page.9 /// </summary>10 public class Coverage11 {12 private readonly JSCoverage _jsCoverage;13 private readonly CSSCoverage _cssCoverage;14 internal Coverage(CDPSession client)15 {16 _jsCoverage = new JSCoverage(client);17 _cssCoverage = new CSSCoverage(client);18 }19 /// <summary>20 /// Starts JS coverage21 /// </summary>22 /// <param name="options">Set of configurable options for coverage</param>23 /// <returns>A task that resolves when coverage is started</returns>24 public Task StartJSCoverageAsync(CoverageStartOptions options = null)25 => _jsCoverage.StartAsync(options ?? new CoverageStartOptions());26 /// <summary>27 /// Stops JS coverage and returns coverage reports for all scripts28 /// </summary>29 /// <returns>Task that resolves to the array of coverage reports for all stylesheets</returns>30 /// <remarks>31 /// JavaScript Coverage doesn't include anonymous scripts by default; however, scripts with sourceURLs are reported.32 /// </remarks>33 public Task<CoverageEntry[]> StopJSCoverageAsync() => _jsCoverage.StopAsync();34 /// <summary>35 /// Starts CSS coverage36 /// </summary>37 /// <param name="options">Set of configurable options for coverage</param>38 /// <returns>A task that resolves when coverage is started</returns>39 public Task StartCSSCoverageAsync(CoverageStartOptions options = null)40 => _cssCoverage.StartAsync(options ?? new CoverageStartOptions());41 /// <summary>42 /// Stops JS coverage and returns coverage reports for all non-anonymous scripts43 /// </summary>44 /// <returns>Task that resolves to the array of coverage reports for all stylesheets</returns>45 /// <remarks>46 /// JavaScript Coverage doesn't include anonymous scripts; however, scripts with sourceURLs are reported.47 /// </remarks>...

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JSResetOnNavigationTests.cs

Source:JSResetOnNavigationTests.cs Github

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...4using Newtonsoft.Json;5using PuppeteerSharp.PageCoverage;6using Xunit;7using Xunit.Abstractions;8namespace PuppeteerSharp.Tests.JSCoverageTests9{10 [Collection("PuppeteerLoaderFixture collection")]11 public class JSResetOnNavigationTests : PuppeteerPageBaseTest12 {13 public JSResetOnNavigationTests(ITestOutputHelper output) : base(output)14 {15 }16 [Fact]17 public async Task ShouldReportScriptsAcrossNavigationsWhenDisabled()18 {19 await Page.Coverage.StartJSCoverageAsync(new CoverageStartOptions20 {21 ResetOnNavigation = false22 });23 await Page.GoToAsync(TestConstants.ServerUrl + "/jscoverage/multiple.html");24 await Page.GoToAsync(TestConstants.EmptyPage);25 var coverage = await Page.Coverage.StopJSCoverageAsync();26 Assert.Equal(2, coverage.Length);27 }28 [Fact]29 public async Task ShouldNotReportScriptsAcrossNavigationsWhenEnabled()30 {31 await Page.Coverage.StartJSCoverageAsync();32 await Page.GoToAsync(TestConstants.ServerUrl + "/jscoverage/multiple.html");33 await Page.GoToAsync(TestConstants.EmptyPage);34 var coverage = await Page.Coverage.StopJSCoverageAsync();35 Assert.Empty(coverage);36 }37 }38}...

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JSCoverage

Using AI Code Generation

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1using PuppeteerSharp;2using PuppeteerSharp.PageCoverage;3using System;4using System.IO;5using System.Threading.Tasks;6{7 {8 static async Task Main(string[] args)9 {10 {11 Args = new[] { "--no-sandbox" }12 };13 using (var browser = await Puppeteer.LaunchAsync(options))14 using (var page = await browser.NewPageAsync())15 {16 var coverage = await page.Coverage.StartJSCoverageAsync();

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JSCoverage

Using AI Code Generation

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1using System;2using System.IO;3using System.Threading.Tasks;4using PuppeteerSharp;5{6 {7 static async Task Main(string[] args)8 {9 Console.WriteLine("Hello World!");10 var browser = await Puppeteer.LaunchAsync(new LaunchOptions11 {12 ExecutablePath = "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe",13 });14 var page = await browser.NewPageAsync();15 await page.EvaluateFunctionAsync("() => { window.scrollBy(0, window.innerHeight) }");16 await page.WaitForTimeoutAsync(1000);17 var coverage = await page.Coverage.StartJSCoverageAsync();18 await page.EvaluateFunctionAsync("() => { window.scrollBy(0, window.innerHeight) }");19 await page.WaitForTimeoutAsync(1000);20 var jsCoverage = await page.Coverage.StopJSCoverageAsync();21 var coverageInfo = CoverageInfo.Create(jsCoverage);22 File.WriteAllText("coverage.json", coverageInfo.ToString());23 await browser.CloseAsync();24 }25 }26}27using System;28using System.IO;29using System.Threading.Tasks;30using PuppeteerSharp;31{32 {33 static async Task Main(string[] args)34 {35 Console.WriteLine("Hello World!");36 var browser = await Puppeteer.LaunchAsync(new LaunchOptions37 {38 ExecutablePath = "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe",39 });40 var page = await browser.NewPageAsync();41 await page.EvaluateFunctionAsync("() => { window.scrollBy(0, window.innerHeight) }");42 await page.WaitForTimeoutAsync(1000);43 await page.Coverage.StartAsync();44 await page.EvaluateFunctionAsync("() => { window.scrollBy(0, window.innerHeight) }");45 await page.WaitForTimeoutAsync(1000);

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JSCoverage

Using AI Code Generation

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1using System;2using System.IO;3using System.Threading.Tasks;4using PuppeteerSharp;5using PuppeteerSharp.PageCoverage;6{7 {8 public static async Task Main(string[] args)9 {10 var browser = await Puppeteer.LaunchAsync(new LaunchOptions11 {12 });13 var page = await browser.NewPageAsync();14 await page.WaitForSelectorAsync("input[name='q']");15 await page.TypeAsync("input[name='q']", "PuppeteerSharp");16 await page.PressAsync("input[name='q']", "Enter");17 await page.WaitForNavigationAsync();18 var coverage = await page.Coverage.StartJSCoverageAsync();19 await page.PressAsync("input[name='q']", "Enter");20 await page.WaitForNavigationAsync();21 var result = await page.Coverage.StopJSCoverageAsync(coverage);22 await page.Coverage.StopJSCoverageAsync(coverage);23 await browser.CloseAsync();24 Console.WriteLine("Done");25 }26 }27}28using System;29using System.IO;30using System.Threading.Tasks;31using PuppeteerSharp;32using PuppeteerSharp.PageCoverage;33{34 {35 public static async Task Main(string[] args)36 {37 var browser = await Puppeteer.LaunchAsync(new LaunchOptions38 {39 });40 var page = await browser.NewPageAsync();41 await page.WaitForSelectorAsync("input[name='q']");42 await page.TypeAsync("input[name='q']", "PuppeteerSharp");43 await page.PressAsync("input[name='q']", "Enter");44 await page.WaitForNavigationAsync();45 var coverage = await page.Coverage.StartJSCoverageAsync();46 await page.PressAsync("input[name='q']", "Enter");47 await page.WaitForNavigationAsync();48 var result = await page.Coverage.StopJSCoverageAsync(coverage);49 await page.Coverage.StopJSCoverageAsync(coverage);50 await browser.CloseAsync();51 Console.WriteLine("Done");52 }53 }54}

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JSCoverage

Using AI Code Generation

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1using PuppeteerSharp;2using PuppeteerSharp.PageCoverage;3using System;4using System.Collections.Generic;5using System.Text;6using System.Threading.Tasks;7{8 {9 static async Task Main(string[] args)10 {11 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);12 var browser = await Puppeteer.LaunchAsync(new LaunchOptions13 {14 Args = new[] { "--no-sandbox" }15 });16 var page = await browser.NewPageAsync();17 await page.Coverage.StartJSCoverageAsync();18 var coverage = await page.Coverage.StopJSCoverageAsync();19 var report = JSCoverage.ToReport(coverage);20 System.IO.File.WriteAllText("coverage.json", report);21 await browser.CloseAsync();22 }23 }24}25const puppeteer = require('puppeteer');26const fs = require('fs');27(async () => {28 const browser = await puppeteer.launch({29 });30 const page = await browser.newPage();31 await page.coverage.startJSCoverage();32 const coverage = await page.coverage.stopJSCoverage();33 const report = JSON.stringify(coverage);34 fs.writeFileSync('coverage.json', report);35 await browser.close();36})();37const puppeteer = require('puppeteer');38const fs = require('fs');39(async () => {40 const browser = await puppeteer.launch({

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JSCoverage

Using AI Code Generation

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4using PuppeteerSharp.PageCoverage;5using System.Linq;6{7 {8 public async Task<string> GetCoverage(string url)9 {10 var options = new LaunchOptions { Headless = true };11 using (var browser = await Puppeteer.LaunchAsync(options))12 {13 await browser.CreateIncognitoBrowserContextAsync();14 var page = await browser.NewPageAsync();15 await page.GoToAsync(url);16 var coverage = await page.Coverage.StartJSCoverageAsync();17 await page.Coverage.StopJSCoverageAsync();18 return coverage.ToJson();19 }20 }21 }22}23using System;24using System.Threading.Tasks;25using PuppeteerSharp;26using PuppeteerSharp.PageCoverage;27using System.Linq;28{29 {30 static void Main(string[] args)31 {32 Console.WriteLine("Hello World!");33 var coverage = new JSCoverage();34 var result = coverage.GetCoverage(url);35 Console.WriteLine(result.Result);36 }37 }38}39using System;40using System.Threading.Tasks;41using PuppeteerSharp;42using PuppeteerSharp.PageCoverage;43using System.Linq;44{45 {46 static void Main(string[] args)47 {48 Console.WriteLine("Hello World!");49 var coverage = new JSCoverage();50 var result = coverage.GetCoverage(url);51 Console.WriteLine(result.Result);52 }53 }54}55using System;56using System.Threading.Tasks;57using PuppeteerSharp;58using PuppeteerSharp.PageCoverage;59using System.Linq;60{61 {62 static void Main(string[] args)63 {

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