public HttpClientStreamStoreFixture2() { _inMemoryStreamStore = new InMemoryStreamStore(() => GetUtcNow()); var webHostBuilder = new WebHostBuilder() .Configure(builder => builder.UseSqlStreamStoreHal(_inMemoryStreamStore)); _server = new TestServer(webHostBuilder); var handler = new RedirectingHandler { InnerHandler = _server.CreateHandler() }; Store = new HttpClientSqlStreamStore( new HttpClientSqlStreamStoreSettings { GetUtcNow = () => GetUtcNow(), HttpMessageHandler = handler, BaseAddress = new UriBuilder().Uri }); }