Minor 3.x Updates (#339)

* remove unnecessary call

* Refactoring test fixture

tests/FunctionalTests/Web/WebTestFixture.cs

@@ -0,0 +1,79 @@
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.eShopWeb.Infrastructure.Data;
+using Microsoft.eShopWeb.Infrastructure.Identity;
+using Microsoft.eShopWeb.Web;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using System;
+
+namespace Microsoft.eShopWeb.FunctionalTests.Web
+{
+    public class WebTestFixture : WebApplicationFactory<Startup>
+    {
+        protected override void ConfigureWebHost(IWebHostBuilder builder)
+        {
+            builder.UseEnvironment("Testing");
+
+            builder.ConfigureServices(services =>
+            {
+                 services.AddEntityFrameworkInMemoryDatabase();
+
+                // Create a new service provider.
+                var provider = services
+                    .AddEntityFrameworkInMemoryDatabase()
+                    .BuildServiceProvider();
+
+                // Add a database context (ApplicationDbContext) using an in-memory 
+                // database for testing.
+                services.AddDbContext<CatalogContext>(options =>
+                {
+                    options.UseInMemoryDatabase("InMemoryDbForTesting");
+                    options.UseInternalServiceProvider(provider);
+                });
+
+                services.AddDbContext<AppIdentityDbContext>(options =>
+                {
+                    options.UseInMemoryDatabase("Identity");
+                    options.UseInternalServiceProvider(provider);
+                });
+
+                // 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<CatalogContext>();
+                    var loggerFactory = scopedServices.GetRequiredService<ILoggerFactory>();
+
+                    var logger = scopedServices
+                        .GetRequiredService<ILogger<WebTestFixture>>();
+
+                    // Ensure the database is created.
+                    db.Database.EnsureCreated();
+
+                    try
+                    {
+                        // Seed the database with test data.
+                        CatalogContextSeed.SeedAsync(db, loggerFactory).Wait();
+
+                        // seed sample user data
+                        var userManager = scopedServices.GetRequiredService<UserManager<ApplicationUser>>();
+                        var roleManager = scopedServices.GetRequiredService<RoleManager<IdentityRole>>();
+                        AppIdentityDbContextSeed.SeedAsync(userManager, roleManager).Wait();
+                    }
+                    catch (Exception ex)
+                    {
+                        logger.LogError(ex, $"An error occurred seeding the " +
+                            "database with test messages. Error: {ex.Message}");
+                    }
+                }
+            });
+        }
+    }
+}