How to use StartCSSCoverageAsync method of PuppeteerSharp.PageCoverage.Coverage class

Best Puppeteer-sharp code snippet using PuppeteerSharp.PageCoverage.Coverage.StartCSSCoverageAsync

CSSCoverageTests.cs

Source:CSSCoverageTests.cs

...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}...

Coverage.cs

Source:Coverage.cs

...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            {...

CSSResetOnNavigationTests.cs

Source:CSSResetOnNavigationTests.cs

...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}...

StartCSSCoverageAsync

Using AI Code Generation

1PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartCSSCoverageAsync();2PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartJSCoverageAsync();3PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartCSSCoverageAsync();4PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartJSCoverageAsync();5PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartCSSCoverageAsync();6PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartJSCoverageAsync();7PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartCSSCoverageAsync();8PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartJSCoverageAsync();9PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartCSSCoverageAsync();10PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartJSCoverageAsync();11PuppeteerSharp.PageCoverage.Coverage coverage = await page.StartCSSCoverageAsync();

StartCSSCoverageAsync

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        static async Task Main(string[] args)11        {12            {13                Args = new[] { "--start-fullscreen" }14            };15            using (var browser = await Puppeteer.LaunchAsync(options))16            using (var page = await browser.NewPageAsync())17            {18                await page.ClickAsync("input[name='q']");19                await page.Keyboard.TypeAsync("Puppeteer");20                await page.Keyboard.PressAsync("Enter");21                await page.WaitForNavigationAsync();22                await page.Coverage.StartCSSCoverageAsync();23                await page.WaitForNavigationAsync();24                var coverage = await page.Coverage.StopCSSCoverageAsync();25                foreach (var entry in coverage)26                {27                    Console.WriteLine(entry.Url);28                    Console.WriteLine(entry.Text);29                }30            }31        }32    }33}34using System;35using System.Collections.Generic;36using System.Linq;37using System.Text;38using System.Threading.Tasks;39using PuppeteerSharp;40using PuppeteerSharp.PageCoverage;41{42    {43        static async Task Main(string[] args)44        {45            {46                Args = new[] { "--start-fullscreen" }47            };48            using (var browser = await Puppeteer.LaunchAsync(options))49            using (var page = await browser.NewPageAsync())50            {51                await page.ClickAsync("input[name='q']");52                await page.Keyboard.TypeAsync("Puppeteer");53                await page.Keyboard.PressAsync("Enter");54                await page.WaitForNavigationAsync();55                await page.Coverage.StartJSCoverageAsync();56                await page.WaitForNavigationAsync();

StartCSSCoverageAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2await page.StartCSSCoverageAsync();3await page.ClickAsync("input[type='text']");4await page.TypeAsync("input[type='text']", "Hello World");5await page.StopCSSCoverageAsync();6var page = await browser.NewPageAsync();7await page.StartJSCoverageAsync();8await page.ClickAsync("input[type='text']");9await page.TypeAsync("input[type='text']", "Hello World");10await page.StopJSCoverageAsync();11var page = await browser.NewPageAsync();12await page.StartJSCoverageAsync();13await page.ClickAsync("input[type='text']");14await page.TypeAsync("input[type='text']", "Hello World");15await page.StopJSCoverageAsync();16var page = await browser.NewPageAsync();17await page.StartCSSCoverageAsync();18await page.ClickAsync("input[type='text']");19await page.TypeAsync("input[type='text']", "Hello World");20await page.StopCSSCoverageAsync();21var page = await browser.NewPageAsync();22await page.StartJSCoverageAsync();23await page.ClickAsync("input[type='text']");24await page.TypeAsync("input[type='text']", "Hello World");25await page.StopJSCoverageAsync();26var page = await browser.NewPageAsync();27await page.StartCSSCoverageAsync();28await page.ClickAsync("input[type='text']");29await page.TypeAsync("input[type='text']", "Hello

StartCSSCoverageAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2var coverage = await page.Coverage.StartCSSCoverageAsync();3var cssCoverage = await coverage.StopCSSCoverageAsync();4var page = await browser.NewPageAsync();5var coverage = await page.Coverage.StartJSCoverageAsync();6var jsCoverage = await coverage.StopJSCoverageAsync();7var page = await browser.NewPageAsync();8var coverage = await page.Coverage.StartJSCoverageAsync();9var jsCoverage = await coverage.StopJSCoverageAsync();10var page = await browser.NewPageAsync();11var coverage = await page.Coverage.StartJSCoverageAsync();12var jsCoverage = await coverage.StopJSCoverageAsync();13var page = await browser.NewPageAsync();14var coverage = await page.Coverage.StartJSCoverageAsync();15var jsCoverage = await coverage.StopJSCoverageAsync();16var page = await browser.NewPageAsync();17var coverage = await page.Coverage.StartJSCoverageAsync();18var jsCoverage = await coverage.StopJSCoverageAsync();19var page = await browser.NewPageAsync();20var coverage = await page.Coverage.StartJSCoverageAsync();

StartCSSCoverageAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            {9            };10            var browser = await Puppeteer.LaunchAsync(options);11            var page = await browser.NewPageAsync();12            var coverage = await page.Coverage.StartCSSCoverageAsync();13            await page.EvaluateFunctionAsync("() => {document.querySelector('input').style.border = '3px solid red';}");14            var cssCoverage = await page.Coverage.StopCSSCoverageAsync();15            foreach (var entry in cssCoverage)16            {17                Console.WriteLine(entry.Text);18                foreach (var range in entry.Ranges)19                {20                    Console.WriteLine(range.Start + " " + range.End);21                }22            }23            await browser.CloseAsync();24        }25    }26}27input{border:3px solid red}

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