Mediatr example (#325)

* Updates based on documentation

* Getting the build passing

* Getting app functioning

* A few cleanups to confirm it's working as expected

* Fixing functional tests

* Updating dockerfile for 3.0

* Functional Tests now run sequentially

* Updating to latest version of moq

* Adding migration for post 3.0 upgrades

* Removing commented out lines

* Moving address and catalogitemordered configuration in to classes that own them

* Installing MediatR nuget packages

* Configure MediatR in Startup

* Creating GetMyOrders MediatR query and handler

* Adding GetOrderDetails MediatR handler

* Refactoring out default values

* Added tests for GetOrderDetails mediator handler

* Defaulting values on Models for now

* Removing some spaces

* Splitting files

* Splitting out the GetOrderDetails files

* Adding test for GetMyOrders

* restructuing folders

* Using constant

src/Web/Startup.cs

@@ -1,4 +1,5 @@
 using Ardalis.ListStartupServices;
+using MediatR;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Diagnostics.HealthChecks;
 using Microsoft.AspNetCore.Hosting;
@@ -81,7 +82,9 @@ namespace Microsoft.eShopWeb.Web
             ConfigureCookieSettings(services);
 
             CreateIdentityIfNotCreated(services);
-            
+
+            services.AddMediatR(typeof(BasketViewModelService).Assembly);
+
             services.AddScoped(typeof(IAsyncRepository<>), typeof(EfRepository<>));
             services.AddScoped<ICatalogViewModelService, CachedCatalogViewModelService>();
             services.AddScoped<IBasketService, BasketService>();
@@ -109,13 +112,12 @@ namespace Microsoft.eShopWeb.Web
                 options.Conventions.Add(new RouteTokenTransformerConvention(
                          new SlugifyParameterTransformer()));
 
-            });
-            services.AddControllersWithViews();
+            });    
             services.AddRazorPages(options =>
             {
                 options.Conventions.AuthorizePage("/Basket/Checkout");
             });
-            
+            services.AddControllersWithViews();
             services.AddControllers();
 
             services.AddHttpContextAccessor();
@@ -207,14 +209,13 @@ namespace Microsoft.eShopWeb.Web
                 app.UseHsts();
             }
 
-            app.UseHttpsRedirection();
             app.UseStaticFiles();
             app.UseRouting();
-
+            
+            app.UseHttpsRedirection();
             app.UseCookiePolicy();
             app.UseAuthentication();
             app.UseAuthorization();
-
             // Enable middleware to serve generated Swagger as a JSON endpoint.
             app.UseSwagger();