LighthouseDotnet

This is a .net (c#) library for Google Lighthouse tool.

Lighthouse.NET analyzes web apps and web pages, collecting modern performance metrics and insights on developer best practices from your code.

Auditing, performance metrics, and best practices for Progressive Web Apps in .NET tests.

Compatible with newest version from dotnet5 and working from Docker containers.

• Note: Project based on https://github.com/dima-horror/lighthouse.net

PRE-REQUISITES

• Install Google Chrome https://www.google.com/chrome/
• Install node from 18x version https://nodejs.org/en/download/
• Install lighthouse 10.0.2 globally

npm i lighthouse@10.0.2 -g

• Install lighthouse.net into your project via NuGet

PM> Install-Package LighthouseDotnet

• https://www.nuget.org/packages/LighthouseDotnet

USAGE

LighthouseDotnetTests.cs

        [Test]
        public async Task NpmExistTest()
        {
            var lh = new Lighthouse();
            var res = await lh.Run("http://example.com");

            Assert.IsNotNull(res);
            Assert.IsNotNull(res.Performance);
            Assert.IsTrue(res.Performance > 0.5m);

            Assert.IsNotNull(res.Accessibility);
            Assert.IsTrue(res.Accessibility > 0.5m);

            Assert.IsNotNull(res.BestPractices);
            Assert.IsTrue(res.BestPractices > 0.5m);

            Assert.IsNotNull(res.Pwa);
            Assert.IsTrue(res.Pwa > 0.2m);

            Assert.IsNotNull(res.Seo);
            Assert.IsTrue(res.Seo > 0.2m);
        }

        [Test]
        public async Task GetHtmlReport()
        {
            var lh = new Lighthouse();
            var res = await lh.Run("http://example.com");

            var reportsDir = "./lighthouse-reports";
            var filename = $"{Guid.NewGuid()}--{DateTime.Now:dd-MM-yyyy--HH-mm-ss}";

            var reportPath = lh.SaveReportHtml(reportsDir, filename, res);
            Console.WriteLine(reportPath);

            var report = File.ReadAllText(reportPath);
            Console.WriteLine(report);
            Assert.NotNull(report);
        }

        [Test]
        public async Task GetCsvReport()
        {
            var lh = new Lighthouse();
            var res = await lh.Run("http://example.com");

            var reportsDir = "./lighthouse-reports";
            var filename = $"{Guid.NewGuid()}--{DateTime.Now:dd-MM-yyyy--HH-mm-ss}";

            var reportPath = lh.SaveReportCsv(reportsDir, filename, res);
            Console.WriteLine(reportPath);

            var reportContent = File.ReadAllText(reportPath);
            Assert.False(String.IsNullOrEmpty(reportContent.Trim()));
        }

        [Test]
        public async Task GetJsonReport()
        {
            var lh = new Lighthouse();
            var res = await lh.Run("http://example.com");

            var reportsDir = "./lighthouse-reports";
            var filename = $"{Guid.NewGuid()}--{DateTime.Now:dd-MM-yyyy--HH-mm-ss}";

            var reportPath = lh.SaveReportJson(reportsDir, filename, res);
            Console.WriteLine(reportPath);

            var reportContent = File.ReadAllText(reportPath);
            Assert.False(String.IsNullOrEmpty(reportContent.Trim()));
        }