test(relationships): add failing tests

Author: jaredcnance

test/JsonApiDotNetCoreExampleTests/Acceptance/Spec/Relationships.cs

@@ -2,25 +2,28 @@
 using System.Net.Http;
 using System.Threading.Tasks;
 using DotNetCoreDocs;
-using DotNetCoreDocs.Models;
 using DotNetCoreDocs.Writers;
 using JsonApiDotNetCoreExample;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.TestHost;
 using Newtonsoft.Json;
 using Xunit;
-using JsonApiDotNetCore.Internal;
 using JsonApiDotNetCore.Models;
+using JsonApiDotNetCoreExample.Data;
+using System.Linq;
+using System;
 
 namespace JsonApiDotNetCoreExampleTests.Acceptance.Spec
 {
     [Collection("WebHostCollection")]
     public class Relationships
     {
         private DocsFixture<Startup, JsonDocWriter> _fixture;
+        private AppDbContext _context;
         public Relationships(DocsFixture<Startup, JsonDocWriter> fixture)
         {
             _fixture = fixture;
+            _context = fixture.GetService<AppDbContext>();
         }
 
         [Fact]
@@ -50,6 +53,35 @@ public async Task Correct_RelationshipObjects_For_ManyToOne_Relationships()
             Assert.Equal(expectedOwnerRelatedLink, data.Relationships["owner"].Links.Related);
         }
 
+        [Fact]
+        public async Task Correct_RelationshipObjects_For_ManyToOne_Relationships_ById()
+        {
+            // arrange
+            var todoItemId = _context.TodoItems.Last().Id;
+
+            var builder = new WebHostBuilder()
+                .UseStartup<Startup>();
+
+            var httpMethod = new HttpMethod("GET");
+            var route = $"/api/v1/todo-items/{todoItemId}";
+
+            var server = new TestServer(builder);
+            var client = server.CreateClient();
+            var request = new HttpRequestMessage(httpMethod, route);
+
+            // act
+            var response = await client.SendAsync(request);
+            var responseString = await response.Content.ReadAsStringAsync();
+            var data = JsonConvert.DeserializeObject<Document>(responseString).Data;
+            var expectedOwnerSelfLink = $"http://localhost/api/v1/todo-items/{todoItemId}/relationships/owner";
+            var expectedOwnerRelatedLink = $"http://localhost/api/v1/todo-items/{todoItemId}/owner";
+
+            // assert
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            Assert.Equal(expectedOwnerSelfLink, data.Relationships["owner"].Links?.Self);
+            Assert.Equal(expectedOwnerRelatedLink, data.Relationships["owner"].Links.Related);
+        }
+
         [Fact]
         public async Task Correct_RelationshipObjects_For_OneToMany_Relationships()
         {
@@ -76,5 +108,34 @@ public async Task Correct_RelationshipObjects_For_OneToMany_Relationships()
             Assert.Equal(expectedOwnerSelfLink, data.Relationships["todo-items"].Links.Self);
             Assert.Equal(expectedOwnerRelatedLink, data.Relationships["todo-items"].Links.Related);
         }
+
+        [Fact]
+        public async Task Correct_RelationshipObjects_For_OneToMany_Relationships_ById()
+        {
+            // arrange
+            var personId = _context.People.Last().Id;
+
+            var builder = new WebHostBuilder()
+                .UseStartup<Startup>();
+
+            var httpMethod = new HttpMethod("GET");
+            var route = $"/api/v1/people/{personId}";
+
+            var server = new TestServer(builder);
+            var client = server.CreateClient();
+            var request = new HttpRequestMessage(httpMethod, route);
+
+            // act
+            var response = await client.SendAsync(request);
+            var responseString = await response.Content.ReadAsStringAsync();
+            var data = JsonConvert.DeserializeObject<Document>(responseString).Data;
+            var expectedOwnerSelfLink = $"http://localhost/api/v1/people/{personId}/relationships/todo-items";
+            var expectedOwnerRelatedLink = $"http://localhost/api/v1/people/{personId}/todo-items";
+
+            // assert
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            Assert.Equal(expectedOwnerSelfLink, data.Relationships["todo-items"].Links?.Self);
+            Assert.Equal(expectedOwnerRelatedLink, data.Relationships["todo-items"].Links.Related);
+        }
     }
 }