diff --git a/test/JsonApiDotNetCoreExampleTests/Acceptance/Spec/DeeplyNestedInclusionTests.cs b/test/JsonApiDotNetCoreExampleTests/Acceptance/Spec/DeeplyNestedInclusionTests.cs
index 7af5c3b594..5e4754c7c5 100644
--- a/test/JsonApiDotNetCoreExampleTests/Acceptance/Spec/DeeplyNestedInclusionTests.cs
+++ b/test/JsonApiDotNetCoreExampleTests/Acceptance/Spec/DeeplyNestedInclusionTests.cs
@@ -1,10 +1,13 @@
+using System.Collections.Generic;
 using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
 using Bogus;
+using JsonApiDotNetCore.Models;
 using JsonApiDotNetCoreExample;
 using JsonApiDotNetCoreExample.Data;
 using JsonApiDotNetCoreExample.Models;
+using JsonApiDotNetCoreExampleTests.Helpers.Extensions;
 using Microsoft.AspNetCore.Hosting;
 using Newtonsoft.Json;
 using Xunit;
@@ -22,6 +25,14 @@ public DeeplyNestedInclusionTests(TestFixture<TestStartup> fixture)
             _fixture = fixture;
         }
 
+        private void ResetContext(AppDbContext context) 
+        {
+            context.TodoItems.RemoveRange(context.TodoItems);
+            context.TodoItemCollections.RemoveRange(context.TodoItemCollections);
+            context.People.RemoveRange(context.People);
+            context.PersonRoles.RemoveRange(context.PersonRoles);
+        }
+
         [Fact]
         public async Task Can_Include_Nested_Relationships()
         {
@@ -53,5 +64,253 @@ public async Task Can_Include_Nested_Relationships()
             Assert.NotNull(responseTodoItem.Collection);
             Assert.NotNull(responseTodoItem.Collection.Owner);
         }
+
+        [Fact]
+        public async Task Can_Include_Nested_HasMany_Relationships()
+        {
+            // arrange
+            const string route = "/api/v1/todo-items?include=collection.todo-items";
+
+            var todoItem = new TodoItem {
+                Collection = new TodoItemCollection {
+                    Owner = new Person(),
+                    TodoItems = new List<TodoItem> {
+                        new TodoItem(),
+                        new TodoItem()
+                    }
+                }
+            };
+        
+            
+            var context = _fixture.GetService<AppDbContext>();
+            ResetContext(context);
+
+            context.TodoItems.Add(todoItem);
+            await context.SaveChangesAsync();
+
+            // act
+            var response = await _fixture.Client.GetAsync(route);
+
+            // assert
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+            var body = await response.Content.ReadAsStringAsync();
+            var documents = JsonConvert.DeserializeObject<Documents>(body);
+            var included = documents.Included;
+            
+            Assert.Equal(4, included.Count);
+
+            Assert.Equal(3, included.CountOfType("todo-items"));
+            Assert.Equal(1, included.CountOfType("todo-collections"));
+        }
+
+        [Fact]
+        public async Task Can_Include_Nested_HasMany_Relationships_BelongsTo()
+        {
+            // arrange
+            const string route = "/api/v1/todo-items?include=collection.todo-items.owner";
+
+            var todoItem = new TodoItem {
+                Collection = new TodoItemCollection {
+                    Owner = new Person(),
+                    TodoItems = new List<TodoItem> {
+                        new TodoItem {
+                            Owner = new Person()
+                        },
+                        new TodoItem()
+                    }
+                }
+            };
+        
+            var context = _fixture.GetService<AppDbContext>();
+            ResetContext(context);
+
+            context.TodoItems.Add(todoItem);
+            await context.SaveChangesAsync();
+
+            // act
+            var response = await _fixture.Client.GetAsync(route);
+
+            // assert
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+            var body = await response.Content.ReadAsStringAsync();
+            var documents = JsonConvert.DeserializeObject<Documents>(body);
+            var included = documents.Included;
+            
+            Assert.Equal(5, included.Count);
+
+            Assert.Equal(3, included.CountOfType("todo-items"));
+            Assert.Equal(1, included.CountOfType("people"));
+            Assert.Equal(1, included.CountOfType("todo-collections"));
+        }
+
+        [Fact]
+        public async Task Can_Include_Nested_Relationships_With_Multiple_Paths()
+        {
+            // arrange
+            const string route = "/api/v1/todo-items?include=collection.owner.role,collection.todo-items.owner";
+
+            var todoItem = new TodoItem {
+                Collection = new TodoItemCollection {
+                    Owner = new Person {
+                        Role = new PersonRole()
+                    },
+                    TodoItems = new List<TodoItem> {
+                        new TodoItem {
+                            Owner = new Person()
+                        },
+                        new TodoItem()
+                    }
+                }
+            };
+        
+            var context = _fixture.GetService<AppDbContext>();
+            ResetContext(context);
+
+            context.TodoItems.Add(todoItem);
+            await context.SaveChangesAsync();
+
+            // act
+            var response = await _fixture.Client.GetAsync(route);
+
+            // assert
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+            var body = await response.Content.ReadAsStringAsync();
+            var documents = JsonConvert.DeserializeObject<Documents>(body);
+            var included = documents.Included;
+            
+            Assert.Equal(7, included.Count);
+            
+            Assert.Equal(3, included.CountOfType("todo-items"));
+            Assert.Equal(2, included.CountOfType("people"));
+            Assert.Equal(1, included.CountOfType("person-roles"));
+            Assert.Equal(1, included.CountOfType("todo-collections"));
+        }
+
+        [Fact]
+        public async Task Included_Resources_Are_Correct()
+        {
+            // arrange
+            var role = new PersonRole();
+            var assignee = new Person { Role = role };
+            var collectionOwner = new Person();
+            var someOtherOwner = new Person();
+            var collection = new TodoItemCollection { Owner = collectionOwner };
+            var todoItem1 = new TodoItem { Collection = collection, Assignee = assignee };
+            var todoItem2 = new TodoItem { Collection = collection, Assignee = assignee };
+            var todoItem3 = new TodoItem { Collection = collection, Owner = someOtherOwner };
+            var todoItem4 = new TodoItem { Collection = collection, Owner = assignee };
+        
+            var context = _fixture.GetService<AppDbContext>();
+            ResetContext(context);
+
+            context.TodoItems.Add(todoItem1);
+            context.TodoItems.Add(todoItem2);
+            context.TodoItems.Add(todoItem3);
+            context.TodoItems.Add(todoItem4);
+            context.PersonRoles.Add(role);
+            context.People.Add(assignee);
+            context.People.Add(collectionOwner);
+            context.People.Add(someOtherOwner);
+            context.TodoItemCollections.Add(collection);
+
+
+            await context.SaveChangesAsync();
+
+            string route = 
+                "/api/v1/todo-items/" + todoItem1.Id + "?include=" +
+                    "collection.owner," + 
+                    "assignee.role," + 
+                    "assignee.assigned-todo-items";
+
+            // act
+            var response = await _fixture.Client.GetAsync(route);
+
+            // assert
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+            var body = await response.Content.ReadAsStringAsync();
+            var documents = JsonConvert.DeserializeObject<Document>(body);
+            var included = documents.Included;
+            
+            // 1 collection, 1 owner, 
+            // 1 assignee, 1 assignee role,
+            // 2 assigned todo items (including the primary resource)
+            Assert.Equal(6, included.Count); 
+
+            var collectionDocument = included.FindResource("todo-collections", collection.Id);
+            var ownerDocument = included.FindResource("people", collectionOwner.Id);
+            var assigneeDocument = included.FindResource("people", assignee.Id);
+            var roleDocument = included.FindResource("person-roles", role.Id);
+            var assignedTodo1 = included.FindResource("todo-items", todoItem1.Id);
+            var assignedTodo2 = included.FindResource("todo-items", todoItem2.Id);
+
+            Assert.NotNull(assignedTodo1);
+            Assert.Equal(todoItem1.Id.ToString(), assignedTodo1.Id);
+
+            Assert.NotNull(assignedTodo2);
+            Assert.Equal(todoItem2.Id.ToString(), assignedTodo2.Id);
+
+            Assert.NotNull(collectionDocument);
+            Assert.Equal(collection.Id.ToString(), collectionDocument.Id);
+
+            Assert.NotNull(ownerDocument);
+            Assert.Equal(collectionOwner.Id.ToString(), ownerDocument.Id);
+
+            Assert.NotNull(assigneeDocument);
+            Assert.Equal(assignee.Id.ToString(), assigneeDocument.Id);
+
+            Assert.NotNull(roleDocument);
+            Assert.Equal(role.Id.ToString(), roleDocument.Id);
+        }        
+
+        [Fact]
+        public async Task Can_Include_Doubly_HasMany_Relationships()
+        {
+            // arrange
+            var person = new Person {
+                TodoItemCollections = new List<TodoItemCollection> {
+                    new TodoItemCollection {
+                        TodoItems = new List<TodoItem> {
+                            new TodoItem(),
+                            new TodoItem()
+                        }
+                    },
+                    new TodoItemCollection {
+                        TodoItems = new List<TodoItem> {
+                            new TodoItem(),
+                            new TodoItem(),
+                            new TodoItem()
+                        }
+                    }
+                }
+            };
+        
+            var context = _fixture.GetService<AppDbContext>();
+            ResetContext(context);
+
+            context.People.Add(person);
+
+            await context.SaveChangesAsync();
+
+            string route = "/api/v1/people/" + person.Id + "?include=todo-collections.todo-items";
+
+            // act
+            var response = await _fixture.Client.GetAsync(route);
+
+            // assert
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+            var body = await response.Content.ReadAsStringAsync();
+            var documents = JsonConvert.DeserializeObject<Document>(body);
+            var included = documents.Included;
+            
+            Assert.Equal(7, included.Count); 
+
+            Assert.Equal(5, included.CountOfType("todo-items"));
+            Assert.Equal(2, included.CountOfType("todo-collections"));
+        }        
     }
 }
\ No newline at end of file
diff --git a/test/JsonApiDotNetCoreExampleTests/Helpers/Extensions/DocumentExtensions.cs b/test/JsonApiDotNetCoreExampleTests/Helpers/Extensions/DocumentExtensions.cs
new file mode 100644
index 0000000000..f467e17f5b
--- /dev/null
+++ b/test/JsonApiDotNetCoreExampleTests/Helpers/Extensions/DocumentExtensions.cs
@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using JsonApiDotNetCore.Models;
+using Microsoft.EntityFrameworkCore.Internal;
+using Microsoft.EntityFrameworkCore.Query;
+using Microsoft.EntityFrameworkCore.Query.Internal;
+using Microsoft.EntityFrameworkCore.Storage;
+using Database = Microsoft.EntityFrameworkCore.Storage.Database;
+
+namespace JsonApiDotNetCoreExampleTests.Helpers.Extensions
+{
+    public static class DocumentExtensions
+    {
+        public static DocumentData FindResource<TId>(this List<DocumentData> included, string type, TId id)
+        {
+            var document = included.Where(documentData => (
+                documentData.Type == type 
+                && documentData.Id == id.ToString()
+            )).FirstOrDefault();
+
+            return document;
+        }
+
+        public static int CountOfType(this List<DocumentData> included, string type) {
+            return included.Where(documentData => documentData.Type == type).Count();
+        }
+    }
+}
\ No newline at end of file