protected override void ConfigureWebHost(IWebHostBuilder builder) { builder.ConfigureServices(services => { // Create a new service provider. var serviceProvider = new ServiceCollection() .AddEntityFrameworkInMemoryDatabase() .BuildServiceProvider(); // Add a database context (ApplicationDbContext) using an in-memory // database for testing. services.AddDbContext <POIContext>(options => { options.UseInMemoryDatabase("InMemoryDbForTesting"); options.UseInternalServiceProvider(serviceProvider); }); // Build the service provider. var sp = services.BuildServiceProvider(); // Create a scope to obtain a reference to the database // context (ApplicationDbContext). using (var scope = sp.CreateScope()) { var scopedServices = scope.ServiceProvider; var db = scopedServices.GetRequiredService <POIContext>(); var logger = scopedServices .GetRequiredService <ILogger <CustomWebApplicationFactory <TStartup> > >(); // Ensure the database is created. db.Database.EnsureCreated(); try { // Seed the database with test data. DatabaseHelpers.InitializeDbForTests(db); } catch (Exception ex) { logger.LogError(ex, $"An error occurred seeding the " + "database with test POIs. Error: {ex.Message}"); } } }); }