Base fixture for Web API tests collection

BaseFixtureForApiTests.cs

public abstract class BaseApiTestsFixture : IDisposable
    {
        protected bool Disposed;

        public TestServer Server { get; }
        public Mock<ILogger> MockLogger { get; }

        public IConfigurationRoot Configuration { get; }
        public int TimeoutInMilliseconds { get; }

        public BaseApiTestsFixture(Type startupType)
        {
            MockLogger = MockLoggerExtensions.CreateMockLogger();

            var environment = Environment.GetEnvironmentVariable("Hosting:Environment")
                              ?? Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT")
                              ?? EnvironmentName.Development;
            var currentDirectory = Path.GetDirectoryName(startupType.GetTypeInfo().Assembly.Location);

            Server = new TestServer(
                         new WebHostBuilder()
                             .UseContentRoot(currentDirectory)
                             .UseEnvironment(environment)
                             .ConfigureServices(services => services.CaptureCommandLineArguments(new string[0]))
                             .UseMockLogger(MockLogger)
                             .UseStartup(startupType));

            Configuration = new ConfigurationBuilder()
                .SetBasePath(currentDirectory)
                .AddJsonFile("appsettings.json", false, false)
                .AddJsonFile($"appsettings.{environment}.json", true, false)
                .Build();
            TimeoutInMilliseconds = Configuration.GetValue<int>("ApiTimeoutInMilliseconds");
        }

        protected virtual void Dispose(bool disposing)
        {
            if(Disposed)
                return;

            if (disposing)
                Server?.Dispose();
            Disposed = true;
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        ~BaseApiTestsFixture()
        {
            Dispose(false);
        }
    }

    public class BaseApiTestsFixture<TStartup> : BaseApiTestsFixture where TStartup : WebApiBaseStartup
    {
        public BaseApiTestsFixture() : base(typeof(TStartup))
        {
        }
    }