How to use JSCoverage method of PuppeteerSharp.PageCoverage.JSCoverage class

Best Puppeteer-sharp code snippet using PuppeteerSharp.PageCoverage.JSCoverage.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 (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))2{3 var page = await browser.NewPageAsync();4 var jsCoverage = await page.Coverage.StartJSCoverageAsync();5 await page.EvaluateFunctionAsync("() => alert('hello')");6 await page.Coverage.StopJSCoverageAsync();7}8using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))9{10 var page = await browser.NewPageAsync();11 var cssCoverage = await page.Coverage.StartCSSCoverageAsync();12 await page.EvaluateFunctionAsync("() => alert('hello')");13 await page.Coverage.StopCSSCoverageAsync();14}15using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))16{17 var page = await browser.NewPageAsync();18 var cssCoverage = await page.Coverage.StartCSSCoverageAsync();19 await page.EvaluateFunctionAsync("() => alert('hello')");20 await page.Coverage.StopCSSCoverageAsync();21}22using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))23{24 var page = await browser.NewPageAsync();25 var jsCoverage = await page.Coverage.StartJSCoverageAsync();26 await page.EvaluateFunctionAsync("() => alert('hello')");27 await page.Coverage.StopJSCoverageAsync();28}29using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))30{31 var page = await browser.NewPageAsync();

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JSCoverage

Using AI Code Generation

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1var page = await browser.NewPageAsync();2var coverage = await page.Coverage.StartJSCoverageAsync();3var jsCoverage = await page.Coverage.StopJSCoverageAsync();4var page = await browser.NewPageAsync();5var coverage = await page.Coverage.StartCSSCoverageAsync();6var cssCoverage = await page.Coverage.StopCSSCoverageAsync();7var page = await browser.NewPageAsync();8var coverage = await page.Coverage.StartJSCoverageAsync();9var jsCoverage = await page.Coverage.StopJSCoverageAsync();10var page = await browser.NewPageAsync();11var coverage = await page.Coverage.StartCSSCoverageAsync();12var cssCoverage = await page.Coverage.StopCSSCoverageAsync();13var page = await browser.NewPageAsync();14var coverage = await page.Coverage.StartJSCoverageAsync();15var jsCoverage = await page.Coverage.StopJSCoverageAsync();16var page = await browser.NewPageAsync();17var coverage = await page.Coverage.StartCSSCoverageAsync();18var cssCoverage = await page.Coverage.StopCSSCoverageAsync();

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JSCoverage

Using AI Code Generation

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1var page = await browser.NewPageAsync();2var jsCoverage = await page.Coverage.JSCoverage();3await jsCoverage.StartAsync();4var jsCoverageResult = await jsCoverage.StopAsync();5await page.CloseAsync();6var page = await browser.NewPageAsync();7var cssCoverage = await page.Coverage.CSSCoverage();8await cssCoverage.StartAsync();9var cssCoverageResult = await cssCoverage.StopAsync();10await page.CloseAsync();11var page = await browser.NewPageAsync();12await page.Coverage.StartJSCoverageAsync();13var jsCoverageResult = await page.Coverage.StopJSCoverageAsync();14await page.CloseAsync();15var page = await browser.NewPageAsync();16await page.Coverage.StartCSSCoverageAsync();17var cssCoverageResult = await page.Coverage.StopCSSCoverageAsync();18await page.CloseAsync();19var page = await browser.NewPageAsync();20await page.Coverage.StartJSCoverageAsync();21var jsCoverageResult = await page.Coverage.StopJSCoverageAsync();22await page.CloseAsync();23var page = await browser.NewPageAsync();24await page.Coverage.StartCSSCoverageAsync();

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JSCoverage

Using AI Code Generation

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp;7{8 {9 public static async Task<Dictionary<string, double>> GetCoverage(Page page)10 {11 var coverage = await page.Coverage.GetJSCoverageAsync();12 var result = new Dictionary<string, double>();13 foreach (var entry in coverage)14 {15 var url = entry.Url;16 var functions = entry.Functions;17 foreach (var function in functions)18 {19 var functionName = function.FunctionName;20 var range = function.Range;21 var isBlockCoverage = function.IsBlockCoverage;22 var ranges = function.Ranges;23 var count = ranges.Count(a => a.Count > 0);24 var total = ranges.Count;25 var percent = (double)count /​ total;26 var key = $"{url}::{functionName}";27 result.Add(key, percent);28 }29 }30 return result;31 }32 }33}34using System;35using System.Collections.Generic;36using System.Linq;37using System.Text;38using System.Threading.Tasks;39using PuppeteerSharp;40{41 {42 public static async Task<Dictionary<string, double>> GetCoverage(Page page)43 {44 var coverage = await page.Coverage.GetJSCoverageAsync();45 var result = new Dictionary<string, double>();46 foreach (var entry in coverage)47 {48 var url = entry.Url;49 var functions = entry.Functions;50 foreach (var function in functions)51 {52 var functionName = function.FunctionName;53 var range = function.Range;54 var isBlockCoverage = function.IsBlockCoverage;55 var ranges = function.Ranges;56 var count = ranges.Count(a => a.Count > 0);57 var total = ranges.Count;58 var percent = (double)count /​ total;59 var key = $"{url}::{functionName}";60 result.Add(key, percent);61 }62 }63 return result;64 }65 }66}

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JSCoverage

Using AI Code Generation

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1var jsCoverage = await page.JSCoverage.StartAsync();2var coverage = await jsCoverage.StopAsync();3Console.WriteLine("Coverage: " + coverage);4var cssCoverage = await page.CSSCoverage.StartAsync();5var coverage = await cssCoverage.StopAsync();6Console.WriteLine("Coverage: " + coverage);7var cssCoverage = await page.CSSCoverage.StartAsync();8var coverage = await cssCoverage.StopAsync();9Console.WriteLine("Coverage: " + coverage);10var jsCoverage = await page.JSCoverage.StartAsync();11var coverage = await jsCoverage.StopAsync();12Console.WriteLine("Coverage: " + coverage);13var cssCoverage = await page.CSSCoverage.StartAsync();14var coverage = await cssCoverage.StopAsync();15Console.WriteLine("Coverage: " + coverage);16var jsCoverage = await page.JSCoverage.StartAsync();17var coverage = await jsCoverage.StopAsync();18Console.WriteLine("Coverage: " + coverage);19var cssCoverage = await page.CSSCoverage.StartAsync();20var coverage = await cssCoverage.StopAsync();21Console.WriteLine("Coverage: " + coverage);22var cssCoverage = await page.CSSCoverage.StartAsync();23await page.GoToAsync("https

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JSCoverage

Using AI Code Generation

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9 var browser = await Puppeteer.LaunchAsync(new LaunchOptions10 {11 });12 var page = await browser.NewPageAsync();13 var coverage = await page.JSCoverage.StartAsync();14 await page.JSCoverage.StopAsync();15 await File.WriteAllTextAsync("coverage.json", JsonConvert.SerializeObject(coverage));16 }17 }18}

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JSCoverage

Using AI Code Generation

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1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4using System.IO;5using System.Text.Json;6using System.Text.Json.Serialization;7using System.Linq;8using System.Collections.Generic;9{10 {11 public static async Task GenerateCoverageReport(string url, string jsFilePath)12 {13 {14 Args = new string[] { "--no-sandbox" }15 };16 var browser = await Puppeteer.LaunchAsync(options);17 var page = await browser.NewPageAsync();18 await page.GoToAsync(url);19 await page.Coverage.StartJSCoverageAsync();20 await page.GoToAsync(url);21 var coverage = await page.Coverage.StopJSCoverageAsync();22 var jsFileName = Path.GetFileName(jsFilePath);23 var jsFileCoverage = coverage.Where(c => c.Url.Contains(jsFileName)).SingleOrDefault();24 if (jsFileCoverage != null)25 {26 var jsFileContent = File.ReadAllText(jsFilePath);27 var report = GenerateReport(jsFileCoverage, jsFileContent);28 File.WriteAllText("report.json", report);29 }30 }31 public static string GenerateReport(JSCoverageEntry coverage, string jsFileContent)32 {33 var lines = jsFileContent.Split(Environment.NewLine);34 var functions = new List<Function>();35 for (int i = 0; i < lines.Length; i++)36 {37 var line = lines[i];38 {39 };40 functions.Add(function);41 }42 foreach (var range in coverage.Functions)43 {44 var startLine = range.StartOffset;45 var endLine = range.EndOffset;46 for (int i = startLine; i <= endLine; i++)47 {48 functions[i].Executed = true;49 }50 }51 {52 };53 return JsonSerializer.Serialize(report);54 }55 }56}

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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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