Create a derived version of WebApplicationFactory<> that works with the Jellyfin server

MediaBrowser.sln

@@ -1,4 +1,4 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
+Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
 VisualStudioVersion = 15.0.26730.3
 MinimumVisualStudioVersion = 10.0.40219.1
@@ -62,6 +62,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Jellyfin.Server.Implementat
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Jellyfin.Controller.Tests", "tests\Jellyfin.Controller.Tests\Jellyfin.Controller.Tests.csproj", "{462584F7-5023-4019-9EAC-B98CA458C0A0}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MediaBrowser.Api.Tests", "tests\MediaBrowser.Api.Tests\MediaBrowser.Api.Tests.csproj", "{7C93C84F-105C-48E5-A878-406FA0A5B296}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU

tests/MediaBrowser.Api.Tests/JellyfinApplicationFactory.cs

@@ -0,0 +1,124 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Emby.Server.Implementations;
+using Emby.Server.Implementations.IO;
+using Emby.Server.Implementations.Networking;
+using Jellyfin.Drawing.Skia;
+using Jellyfin.Server;
+using MediaBrowser.Common;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.AspNetCore.TestHost;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using Serilog;
+using Serilog.Extensions.Logging;
+
+namespace MediaBrowser.Api.Tests
+{
+    /// <summary>
+    /// Factory for bootstrapping the Jellyfin application in memory for functional end to end tests.
+    /// </summary>
+    public class JellyfinApplicationFactory : WebApplicationFactory<Startup>
+    {
+        private static readonly string _testPathRoot = Path.Combine(Path.GetTempPath(), "jellyfin-test-data");
+        private static readonly ConcurrentBag<ApplicationHost> _appHosts = new ConcurrentBag<ApplicationHost>();
+
+        /// <summary>
+        /// Initializes a new instance of <see cref="JellyfinApplicationFactory"/>.
+        /// </summary>
+        public JellyfinApplicationFactory()
+        {
+            // Perform static initialization that only needs to happen once per test-run
+            Log.Logger = new LoggerConfiguration().WriteTo.Console().CreateLogger();
+            Program.PerformStaticInitialization();
+        }
+
+        /// <inheritdoc/>
+        protected override IWebHostBuilder CreateWebHostBuilder()
+        {
+            return new WebHostBuilder();
+        }
+
+        /// <inheritdoc/>
+        protected override void ConfigureWebHost(IWebHostBuilder builder)
+        {
+            // Specify the startup command line options
+            var commandLineOpts = new StartupOptions
+            {
+                NoWebClient = true,
+                NoAutoRunWebApp = true
+            };
+
+            // Use a temporary directory for the application paths
+            var webHostPathRoot = Path.Combine(_testPathRoot, "test-host-" + Path.GetFileNameWithoutExtension(Path.GetRandomFileName()));
+            Directory.CreateDirectory(Path.Combine(webHostPathRoot, "logs"));
+            Directory.CreateDirectory(Path.Combine(webHostPathRoot, "config"));
+            Directory.CreateDirectory(Path.Combine(webHostPathRoot, "cache"));
+            Directory.CreateDirectory(Path.Combine(webHostPathRoot, "jellyfin-web"));
+            var appPaths = new ServerApplicationPaths(
+                webHostPathRoot,
+                Path.Combine(webHostPathRoot, "logs"),
+                Path.Combine(webHostPathRoot, "config"),
+                Path.Combine(webHostPathRoot, "cache"),
+                Path.Combine(webHostPathRoot, "jellyfin-web"));
+
+            // Create the logging config file
+            // TODO: We shouldn't need to do this since we are only logging to console
+            Program.InitLoggingConfigFile(appPaths).Wait();
+
+            // Create a copy of the application configuration to use for startup
+            var startupConfig = Program.CreateAppConfiguration(commandLineOpts, appPaths);
+
+            // Create the app host and initialize it
+            ILoggerFactory loggerFactory = new SerilogLoggerFactory();
+            var appHost = new CoreAppHost(
+                appPaths,
+                loggerFactory,
+                commandLineOpts,
+                new ManagedFileSystem(loggerFactory.CreateLogger<ManagedFileSystem>(), appPaths),
+                new SkiaEncoder(loggerFactory.CreateLogger<SkiaEncoder>(), appPaths),
+                new NetworkManager(loggerFactory.CreateLogger<NetworkManager>()));
+            _appHosts.Add(appHost);
+            var serviceCollection = new ServiceCollection();
+            appHost.InitAsync(serviceCollection, startupConfig).Wait();
+
+            // Configure the web host builder
+            Program.ConfigureWebHostBuilder(builder, appHost, serviceCollection, commandLineOpts, startupConfig, appPaths);
+        }
+
+        /// <inheritdoc/>
+        protected override TestServer CreateServer(IWebHostBuilder builder)
+        {
+            // Create the test server using the base implementation
+            var testServer = base.CreateServer(builder);
+
+            // Finish initializing the app host
+            var appHost = (CoreAppHost)testServer.Services.GetRequiredService<IApplicationHost>();
+            appHost.ServiceProvider = testServer.Services;
+            appHost.InitializeServices();
+            appHost.FindParts();
+            appHost.RunStartupTasksAsync().Wait();
+
+            return testServer;
+        }
+
+        /// <inheritdoc/>
+        protected override void Dispose(bool disposing)
+        {
+            foreach (var host in _appHosts)
+            {
+                host.Dispose();
+            }
+
+            _appHosts.Clear();
+
+            base.Dispose(disposing);
+        }
+    }
+}

tests/MediaBrowser.Api.Tests/MediaBrowser.Api.Tests.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <IsPackable>false</IsPackable>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="3.1.3" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Jellyfin.Server\Jellyfin.Server.csproj" />
+    <ProjectReference Include="..\..\MediaBrowser.Api\MediaBrowser.Api.csproj" />
+  </ItemGroup>
+
+</Project>