Web integration testing with asp.net and WebSockets

IntegrationTestsServer.cs

public static class IntegrationTestsServer
{
	static IntegrationTestsServer()
	{
		ConfigureMocks();
		Environment.SetEnvironmentVariable("ASPNETCORE_ENVIRONMENT", "IntegrationTesting");
		WebApplicationFactory<Program> appBuilder = new WebApplicationFactory<Program>()
			.WithWebHostBuilder(builder =>
			{
				builder.ConfigureTestServices(services =>
				{
					services.AddScoped(sp => MockUserMessagingService.Object);
					services.AddSingleton(sp => MockDealerStrategy.Object);
				});
				builder.UseSetting("https_port", "8080");
			});

		Configuration = appBuilder.Services.GetRequiredService<IConfiguration>();
		GameServerOptions = appBuilder.Services.GetRequiredService<IOptions<GameServerOptions>>();
		var dbContextOptions = appBuilder.Services.GetRequiredService<DbContextOptions<ApplicationDbContext>>();
		using var dbContext = new ApplicationDbContext(dbContextOptions);
		dbContext.Database.EnsureDeleted();
		dbContext.Database.EnsureCreated();
		TestServer = appBuilder.Server;
		HttpClient = TestServer.CreateClient();
	}

	public static Task<WebSocket> ConnectWebSocketAsync() =>
		TestServer.CreateWebSocketClient().ConnectAsync(
			new Uri("https://localhost:8080/game-server"),
			CancellationToken.None);
}