Inspired by dotnet show (#386)

* Changed the order of the projects, Web first to infer as startup.

* Added encapsulated JSON serialization - and moved to System.Text.Json

* Refactored a few minor updates out

Co-authored-by: Eric Fleming <eric-fleming18@hotmail.com>

eShopOnWeb.sln

@@ -4,6 +4,8 @@ VisualStudioVersion = 16.0.29102.190
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{419A6ACE-0419-4315-A6FB-B0E63D39432E}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Web", "src\Web\Web.csproj", "{227CF035-29B0-448D-97E4-944F9EA850E5}"
+EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Infrastructure", "src\Infrastructure\Infrastructure.csproj", "{7C461394-ABDC-43CD-A798-71249C58BA67}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ApplicationCore", "src\ApplicationCore\ApplicationCore.csproj", "{7FED7440-2311-4D1E-958B-3E887C585CD2}"
@@ -26,8 +28,6 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		README.md = README.md
 	EndProjectSection
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Web", "src\Web\Web.csproj", "{227CF035-29B0-448D-97E4-944F9EA850E5}"
-EndProject
 Project("{E53339B2-1760-4266-BCC7-CA923CBCF16C}") = "docker-compose", "docker-compose.dcproj", "{1FCBE191-34FE-4B2E-8915-CA81553958AD}"
 EndProject
 Global

src/ApplicationCore/ApplicationCore.csproj

@@ -9,6 +9,7 @@
 		<PackageReference Include="Ardalis.GuardClauses" Version="1.5.0" />
 		<PackageReference Include="Ardalis.Specification" Version="3.0.0" />
 		<PackageReference Include="System.Security.Claims" Version="4.3.0" />
+		<PackageReference Include="System.Text.Json" Version="4.7.2" />
 	</ItemGroup>
 
 </Project>

src/ApplicationCore/Extensions/JsonExtensions.cs

@@ -0,0 +1,18 @@
+using System.Text.Json;
+
+namespace Microsoft.eShopWeb
+{
+    public static class JsonExtensions
+    {
+        private static readonly JsonSerializerOptions _jsonOptions = new JsonSerializerOptions
+        {
+            PropertyNameCaseInsensitive = true
+        };
+
+        public static T FromJson<T>(this string json) =>
+            JsonSerializer.Deserialize<T>(json, _jsonOptions);
+
+        public static string ToJson<T>(this T obj) =>
+            JsonSerializer.Serialize<T>(obj, _jsonOptions);
+    }
+}

src/Web/Startup.cs

@@ -172,8 +172,7 @@ namespace Microsoft.eShopWeb.Web
                 {
                     ResponseWriter = async (context, report) =>
                     {
-                        var result = JsonConvert.SerializeObject(
+                        var result = new
-                            new
                         {
                             status = report.Status.ToString(),
                             errors = report.Entries.Select(e => new
@@ -181,7 +180,7 @@ namespace Microsoft.eShopWeb.Web
                                 key = e.Key,
                                 value = Enum.GetName(typeof(HealthStatus), e.Value.Status)
                             })
-                            });
+                        }.ToJson();
                         context.Response.ContentType = MediaTypeNames.Application.Json;
                         await context.Response.WriteAsync(result);
                     }

tests/FunctionalTests/Web/Controllers/ApiCatalogControllerList.cs

@@ -25,7 +25,7 @@ namespace Microsoft.eShopWeb.FunctionalTests.Web.Controllers
             var response = await Client.GetAsync("/api/catalog/list");
             response.EnsureSuccessStatusCode();
             var stringResponse = await response.Content.ReadAsStringAsync();
-            var model = JsonSerializer.Deserialize<CatalogIndexViewModel>(stringResponse, _jsonOptions);
+            var model = stringResponse.FromJson<CatalogIndexViewModel>();
 
             Assert.Equal(10, model.CatalogItems.Count());
         }
@@ -36,7 +36,7 @@ namespace Microsoft.eShopWeb.FunctionalTests.Web.Controllers
             var response = await Client.GetAsync("/api/catalog/list?page=1");
             response.EnsureSuccessStatusCode();
             var stringResponse = await response.Content.ReadAsStringAsync();
-            var model = JsonSerializer.Deserialize<CatalogIndexViewModel>(stringResponse, _jsonOptions);
+            var model = stringResponse.FromJson<CatalogIndexViewModel>();
 
             Assert.Equal(2, model.CatalogItems.Count());
         }

tests/UnitTests/ApplicationCore/Extensions/JsonExtensions.cs

@@ -0,0 +1,36 @@
+using Xunit;
+
+namespace Microsoft.eShopWeb.UnitTests.ApplicationCore.Extensions
+{
+    public class JsonExtensions
+    {
+        [Fact]
+        public void CorrectlySerializesAndDeserializesObject()
+        {
+            var testParent = new TestParent
+            {
+                Id = 7,
+                Name = "Test name",
+                Children = new[]
+                {
+                    new TestChild(),
+                    new TestChild(),
+                    new TestChild()
+                }
+            };
+
+            var json = testParent.ToJson();
+            var result = json.FromJson<TestParent>();
+            Assert.Equal(testParent, result);
+        }
+
+        [
+            Theory,
+            InlineData("{ \"id\": 9, \"name\": \"Another test\" }", 9, "Another test"),
+            InlineData("{ \"id\": 3124, \"name\": \"Test Value 1\" }", 3124, "Test Value 1"),
+        ]
+        public void CorrectlyDeserializesJson(string json, int expectedId, string expectedName) =>
+            Assert.Equal(new TestParent { Id = expectedId, Name = expectedName }, json.FromJson<TestParent>());
+
+    }
+}

tests/UnitTests/ApplicationCore/Extensions/TestChild.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Microsoft.eShopWeb.UnitTests.ApplicationCore.Extensions
+{
+    [DebuggerDisplay("Id={Id}, Date={Date}")]
+    public class TestChild : IEquatable<TestChild>
+    {
+        public Guid Id { get; set; } = Guid.NewGuid();
+
+        public DateTime Date { get; set; } = DateTime.UtcNow;
+
+        public bool Equals([AllowNull] TestChild other) =>
+            other?.Date == Date && other?.Id == Id;
+    }
+}

tests/UnitTests/ApplicationCore/Extensions/TestParent.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+
+namespace Microsoft.eShopWeb.UnitTests.ApplicationCore.Extensions
+{
+    public class TestParent : IEquatable<TestParent>
+    {
+        public int Id { get; set; }
+
+        public string Name { get; set; }
+
+        public IEnumerable<TestChild> Children { get; set; }
+
+        public bool Equals([AllowNull] TestParent other) =>
+            other?.Id == Id && other?.Name == Name &&
+            (other?.Children is null && Children is null ||
+            (other?.Children?.Zip(Children)?.All(t => t.First?.Equals(t.Second) ?? false) ?? false));
+    }
+}