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

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

CSSCoverageTests.cs

Source:CSSCoverageTests.cs

...5using Newtonsoft.Json;6using PuppeteerSharp.PageCoverage;7using Xunit;8using Xunit.Abstractions;9namespace PuppeteerSharp.Tests.CSSCoverageTests10{11    [Collection("PuppeteerLoaderFixture collection")]12    public class CSSCoverageTests : PuppeteerPageBaseTest13    {14        public CSSCoverageTests(ITestOutputHelper output) : base(output)15        {16        }17        [Fact]18        public async Task ShouldWork()19        {20            await Page.Coverage.StartCSSCoverageAsync();21            await Page.GoToAsync(TestConstants.ServerUrl + "/csscoverage/simple.html");22            var coverage = await Page.Coverage.StopCSSCoverageAsync();23            Assert.Single(coverage);24            Assert.Contains("/csscoverage/simple.html", coverage[0].Url);25            Assert.Equal(new CoverageEntryRange[]26            {27                new CoverageEntryRange28                {29                    Start = 1,30                    End = 2231                }32            }, coverage[0].Ranges);33            var range = coverage[0].Ranges[0];34            Assert.Equal("div { color: green; }", coverage[0].Text.Substring(range.Start, range.End - range.Start));35        }36        [Fact]37        public async Task ShouldReportSourceUrls()38        {39            await Page.Coverage.StartCSSCoverageAsync();40            await Page.GoToAsync(TestConstants.ServerUrl + "/csscoverage/sourceurl.html");41            var coverage = await Page.Coverage.StopCSSCoverageAsync();42            Assert.Single(coverage);43            Assert.Equal("nicename.css", coverage[0].Url);44        }45        [Fact]46        public async Task ShouldReportMultipleStylesheets()47        {48            await Page.Coverage.StartCSSCoverageAsync();49            await Page.GoToAsync(TestConstants.ServerUrl + "/csscoverage/multiple.html");50            var coverage = await Page.Coverage.StopCSSCoverageAsync();51            Assert.Equal(2, coverage.Length);52            var orderedList = coverage.OrderBy(c => c.Url);53            Assert.Contains("/csscoverage/stylesheet1.css", orderedList.ElementAt(0).Url);54            Assert.Contains("/csscoverage/stylesheet2.css", orderedList.ElementAt(1).Url);55        }56        [Fact]57        public async Task ShouldReportStylesheetsThatHaveNoCoverage()58        {59            await Page.Coverage.StartCSSCoverageAsync();60            await Page.GoToAsync(TestConstants.ServerUrl + "/csscoverage/unused.html");61            var coverage = await Page.Coverage.StopCSSCoverageAsync();62            Assert.Single(coverage);63            var entry = coverage[0];64            Assert.Contains("unused.css", entry.Url);65            Assert.Empty(entry.Ranges);66        }67        [Fact]68        public async Task ShouldWorkWithMediaQueries()69        {70            await Page.Coverage.StartCSSCoverageAsync();71            await Page.GoToAsync(TestConstants.ServerUrl + "/csscoverage/media.html");72            var coverage = await Page.Coverage.StopCSSCoverageAsync();73            Assert.Single(coverage);74            var entry = coverage[0];75            Assert.Contains("/csscoverage/media.html", entry.Url);76            Assert.Equal(new CoverageEntryRange[]77            {78                new CoverageEntryRange79                {80                    Start = 17,81                    End = 3882                }83            }, coverage[0].Ranges);84        }85        [Fact]86        public async Task ShouldWorkWithComplicatedUsecases()87        {88            const string involved = @"[89              {90                ""Url"": ""http://localhost:<PORT>/csscoverage/involved.html"",91                ""Ranges"": [92                  {93                    ""Start"": 149,94                    ""End"": 29795                  },96                  {97                    ""Start"": 327,98                    ""End"": 43399                  }100                ],101                ""Text"": ""\n @charset \""utf - 8\"";\n@namespace svg url(http://www.w3.org/2000/svg);\n@font-face {\n  font-family: \""Example Font\"";\n src: url(\""./Dosis-Regular.ttf\"");\n}\n\n#fluffy {\n  border: 1px solid black;\n  z-index: 1;\n  /* -webkit-disabled-property: rgb(1, 2, 3) */\n  -lol-cats: \""dogs\"" /* non-existing property */\n}\n\n@media (min-width: 1px) {\n  span {\n    -webkit-border-radius: 10px;\n    font-family: \""Example Font\"";\n    animation: 1s identifier;\n  }\n}\n""102              }103            ]";104            await Page.Coverage.StartCSSCoverageAsync();105            await Page.GoToAsync(TestConstants.ServerUrl + "/csscoverage/involved.html");106            var coverage = await Page.Coverage.StopCSSCoverageAsync();107            Assert.Equal(108                TestUtils.CompressText(involved),109                Regex.Replace(TestUtils.CompressText(JsonConvert.SerializeObject(coverage)), @":\d{4}\/", ":<PORT>/"));110        }111        [Fact]112        public async Task ShouldIgnoreInjectedStylesheets()113        {114            await Page.Coverage.StartCSSCoverageAsync();115            await Page.AddStyleTagAsync(new AddTagOptions116            {117                Content = "body { margin: 10px;}"118            });119            // trigger style recalc120            var margin = await Page.EvaluateExpressionAsync<string>("window.getComputedStyle(document.body).margin");121            Assert.Equal("10px", margin);122            var coverage = await Page.Coverage.StopCSSCoverageAsync();123            Assert.Empty(coverage);124        }125    }126}...

CSSCoverage.cs

Source:CSSCoverage.cs

...5using PuppeteerSharp.Helpers;6using PuppeteerSharp.Messaging;7namespace PuppeteerSharp.PageCoverage8{9    internal class CSSCoverage10    {11        private readonly CDPSession _client;12        private readonly Dictionary<string, string> _stylesheetURLs;13        private readonly Dictionary<string, string> _stylesheetSources;14        private readonly ILogger _logger;15        private bool _enabled;16        private bool _resetOnNavigation;17        public CSSCoverage(CDPSession client)18        {19            _client = client;20            _enabled = false;21            _stylesheetURLs = new Dictionary<string, string>();22            _stylesheetSources = new Dictionary<string, string>();23            _logger = _client.Connection.LoggerFactory.CreateLogger<CSSCoverage>();24            _resetOnNavigation = false;25        }26        internal Task StartAsync(CoverageStartOptions options)27        {28            if (_enabled)29            {30                throw new InvalidOperationException("CSSCoverage is already enabled");31            }32            _resetOnNavigation = options.ResetOnNavigation;33            _enabled = true;34            _stylesheetURLs.Clear();35            _stylesheetSources.Clear();36            _client.MessageReceived += client_MessageReceived;37            return Task.WhenAll(38                _client.SendAsync("DOM.enable"),39                _client.SendAsync("CSS.enable"),40                _client.SendAsync("CSS.startRuleUsageTracking")41            );42        }43        internal async Task<CoverageEntry[]> StopAsync()44        {45            if (!_enabled)46            {47                throw new InvalidOperationException("CSSCoverage is not enabled");48            }49            _enabled = false;50            var ruleTrackingResponseTask = _client.SendAsync<CSSStopRuleUsageTrackingResponse>("CSS.stopRuleUsageTracking");51            await Task.WhenAll(52                ruleTrackingResponseTask,53                _client.SendAsync("CSS.disable"),54                _client.SendAsync("DOM.disable")55            ).ConfigureAwait(false);56            _client.MessageReceived -= client_MessageReceived;57            var styleSheetIdToCoverage = new Dictionary<string, List<CoverageResponseRange>>();58            foreach (var entry in ruleTrackingResponseTask.Result.RuleUsage)59            {60                styleSheetIdToCoverage.TryGetValue(entry.StyleSheetId, out var ranges);61                if (ranges == null)...

Coverage.cs

Source:Coverage.cs

...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>48        public Task<CoverageEntry[]> StopCSSCoverageAsync() => _cssCoverage.StopAsync();49        internal static CoverageEntryRange[] ConvertToDisjointRanges(List<CoverageResponseRange> nestedRanges)50        {51            var points = new List<CoverageEntryPoint>();52            foreach (var range in nestedRanges)53            {54                points.Add(new CoverageEntryPoint55                {56                    Offset = range.StartOffset,57                    Type = 0,58                    Range = range59                });60                points.Add(new CoverageEntryPoint61                {62                    Offset = range.EndOffset,...

CSSResetOnNavigationTests.cs

Source:CSSResetOnNavigationTests.cs

...4using Newtonsoft.Json;5using PuppeteerSharp.PageCoverage;6using Xunit;7using Xunit.Abstractions;8namespace PuppeteerSharp.Tests.CSSCoverageTests9{10    [Collection("PuppeteerLoaderFixture collection")]11    public class CSSResetOnNavigationTests : PuppeteerPageBaseTest12    {13        public CSSResetOnNavigationTests(ITestOutputHelper output) : base(output)14        {15        }16        [Fact]17        public async Task ShouldReportStylesheetsAcrossNavigationsWhenDisabled()18        {19            await Page.Coverage.StartCSSCoverageAsync(new CoverageStartOptions20            {21                ResetOnNavigation = false22            });23            await Page.GoToAsync(TestConstants.ServerUrl + "/csscoverage/multiple.html");24            await Page.GoToAsync(TestConstants.EmptyPage);25            var coverage = await Page.Coverage.StopCSSCoverageAsync();26            Assert.Equal(2, coverage.Length);27        }28        [Fact]29        public async Task ShouldNotReportScriptsAcrossNavigationsWhenEnabled()30        {31            await Page.Coverage.StartCSSCoverageAsync();32            await Page.GoToAsync(TestConstants.ServerUrl + "/csscoverage/multiple.html");33            await Page.GoToAsync(TestConstants.EmptyPage);34            var coverage = await Page.Coverage.StopCSSCoverageAsync();35            Assert.Empty(coverage);36        }37    }38}...

CSSCoverage

Using AI Code Generation

1using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))2{3    var page = await browser.NewPageAsync();4    var cssCoverage = await page.CSSCoverage.StartAsync();5    var cssCoverageResult = await cssCoverage.StopAsync();6    foreach (var entry in cssCoverageResult)7    {8        Console.WriteLine(entry.Text);9    }10}11using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))12{13    var page = await browser.NewPageAsync();14    var cssCoverage = await page.CSSCoverage.StartAsync();15    var cssCoverageResult = await cssCoverage.StopAsync();16    foreach (var entry in cssCoverageResult)17    {18        Console.WriteLine(entry.Text);19    }20}21/*# sourceMappingURL=main.css.map */.nQFZ7c{display:flex;align-items:center}.nQFZ7c>*{flex:1}.nQFZ7c>*:first-child{margin-right:8px}.nQFZ7c>*:last-child{margin-left:8px}.nQFZ7c .Tg7LZd{display:flex;align-items:center}.nQFZ7c .Tg

CSSCoverage

Using AI Code Generation

1using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))2{3    var page = await browser.NewPageAsync();4    var cssCoverage = await page.Coverage.StartCSSCoverageAsync();5    var cssCoverageResult = await page.Coverage.StopCSSCoverageAsync();6    await browser.CloseAsync();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    var cssCoverageResult = await page.Coverage.StopCSSCoverageAsync();13    await browser.CloseAsync();14}15using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))16{17    var page = await browser.NewPageAsync();

CSSCoverage

Using AI Code Generation

1using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))2{3    var page = await browser.NewPageAsync();4    var cssCoverage = await page.Coverage.StartCSSCoverageAsync();5    var cssCoverageResult = await page.Coverage.StopCSSCoverageAsync();6    await browser.CloseAsync();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    var cssCoverageResult = await page.Coverage.StopCSSCoverageAsync();13    await browser.CloseAsync();14}15using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))16{17    var page = await browser.NewPageAsync();

CSSCoverage

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp;7using PuppeteerSharp.PageCoverage;8{9    {10        public static async Task Main(string[] args)11        {12            var options = new LaunchOptions { Headless = true };13            using (var browser = await Puppeteer.LaunchAsync(options))14            using (var page = await browser.NewPageAsync())15            {9

CSSCoverage

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4using System.IO;5using Newtonsoft.Json;6using System.Linq;7{8    {9        static void Main(string[] args)10        {11            MainAsync(args).GetAwaiter().GetResult();12        }13        static async Task MainAsync(string[] args)14        {15            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);16            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))17            using (var page = await browser.NewPageAsync())18            {19                var cssCoverage = await page.Coverage.StartCSSCoverageAsync();20                var entries = await cssCoverage.StopCSSCoverageAsync();21                foreach (var entry in entries)22                {23                    var text = entry.Text;24                    var url = entry.Url;25                    var ranges = entry.Ranges;26                    Console.WriteLine("URL: " + url);27                    Console.WriteLine("Text: " + text);28                    Console.WriteLine("Ranges: " + JsonConvert.SerializeObject(ranges));29                }30            }31        }32    }33}

CSSCoverage

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4using System.IO;5using Newtonsoft.Json;6using System.Linq;7{8    {9        static void Main(string[] args)10        {11            MainAsync(args).GetAwaiter().GetResult();12        }13        static async Task MainAsync(string[] args)14        {15            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);16            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }))17            using (var page = await browser.NewPageAsync())18            {19                var cssCoverage = await page.Coverage.StartCSSCoverageAsync();20                var entries = await cssCoverage.StopCS CoverageAsync();21                foreach (var entry in entries)22                {23                    var text = entry.Text;24                    var url = entry.Url;25                    var ranges = en ry.R nges;26                    Console.WriteLine("URL: " + url);27                    Console.W i eLine("Text  " + text);28                    Console.WriteLine("Ranges: " + JsonConvert.SerializeObject(ranges));29                }30            }31        }32    }33}34                await page.Coverage.StartCSSCoverageAsync();35                var coverage = await page.Coverage.StopCSSCoverageAsync();36                foreach (var entry in coverage)37                {38                    Console.WriteLine(entry.Url);39                    foreach (var range in entry.Ranges)40                    {41                        Console.WriteLine($"Start: {range.Start}, End: {range.End}");42                    }43                }44            }45        }46    }47}

CSSCoverage

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Threading.Tasks;5using PuppeteerSharp;6{7    {8        static async Task Main(string[] args)9        {10            var options = new LaunchOptions { Headless = false };11            using (var browser = await Puppeteer.LaunchAsync(options))12            using (var page = await browser.NewPageAsync())13            {14                var cssCoverage = await page.CSSCoverage.StartAsync();15                var jsCoverage = await page.JSCoverage.StartAsync();16                var cssCoverageResult = await cssCoverage.StopAsync();17                var jsCoverageResult = await jsCoverage.StopAsync();18                foreach (var entry in cssCoverageResult)19                {20                    Console.WriteLine(entry.Text);21                }22                foreach (var entry in jsCoverageResult)23                {24                    Console.WriteLine(entry.Text);25                }26            }27        }28    }29}30using System;31using System.Collections.Generic;32using System.Linq;33using System.Threading.Tasks;34using PuppeteerSharp;35{36    {37        static async Task Main(string[] args)38        {39            var options = new LaunchOptions { Headless = false };40            using (var browser = await Puppeteer.LaunchAsync(options))41            using (var page = await browser.NewPageAsync())42            {43                var cssCoverage = await page.CSSCoverage.StartAsync();44                var jsCoverage = await page.JSCoverage.StartAsync();

CSSCoverage

Using AI Code Generation

1PuppeteerSharp.PageCoverage.CSSCoverage cssCoverage = new PuppeteerSharp.PageCoverage.CSSCoverage(page);2var coverage = await cssCoverage.StartAsync();3await cssCoverage.StopAsync();4PuppeteerSharp.PageCoverage.CSSCoverage cssCoverage = new PuppeteerSharp.PageCoverage.CSSCoverage(page);5var coverage = await cssCoverage.StartAsync();6await cssCoverage.StopAsync();7PuppeteerSharp.PageCoverage.CSSCoverage cssCoverage = new PuppeteerSharp.PageCoverage.CSSCoverage(page);8var coverage = await cssCoverage.StartAsync();9await cssCoverage.StopAsync();10PuppeteerSharp.PageCoverage.CSSCoverage cssCoverage = new PuppeteerSharp.PageCoverage.CSSCoverage(page);11var coverage = await cssCoverage.StartAsync();12await cssCoverage.StopAsync();13PuppeteerSharp.PageCoverage.CSSCoverage cssCoverage = new PuppeteerSharp.PageCoverage.CSSCoverage(page);14var coverage = await cssCoverage.StartAsync();15await cssCoverage.StopAsync();16PuppeteerSharp.PageCoverage.CSSCoverage cssCoverage = new PuppeteerSharp.PageCoverage.CSSCoverage(page);17var coverage = await cssCoverage.StartAsync();18await cssCoverage.StopAsync();19PuppeteerSharp.PageCoverage.CSSCoverage cssCoverage = new PuppeteerSharp.PageCoverage.CSSCoverage(page);20var coverage = await cssCoverage.StartAsync();21await cssCoverage.StopAsync();22PuppeteerSharp.PageCoverage.CSSCoverage cssCoverage = new PuppeteerSharp.PageCoverage.CSSCoverage(page);23var coverage = await cssCoverage.StartAsync();24await cssCoverage.StopAsync();

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