Adding Tests and Refactoring

Functional Tests for RazorPages added

tests/FunctionalTests/WebRazorPages/OrderIndexOnGet.cs

@@ -0,0 +1,32 @@
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.eShopWeb;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace FunctionalTests.WebRazorPages
+{
+    public class OrderIndexOnGet : IClassFixture<CustomWebRazorPagesApplicationFactory<Startup>>
+    {
+        public OrderIndexOnGet(CustomWebRazorPagesApplicationFactory<Startup> factory)
+        {
+            Client = factory.CreateClient(new WebApplicationFactoryClientOptions
+            {
+                AllowAutoRedirect = false
+            });
+        }
+
+        public HttpClient Client { get; }
+
+        [Fact]
+        public async Task ReturnsRedirectGivenAnonymousUser()
+        {
+            var response = await Client.GetAsync("/Order/Index");
+            var redirectLocation = response.Headers.Location.OriginalString;
+
+            Assert.Equal(HttpStatusCode.Redirect, response.StatusCode);
+            Assert.Contains("Account/Signin", redirectLocation);
+        }
+    }
+}