Make CreatedODataResult inherit from ObjectResult

src/Microsoft.AspNetCore.OData/Results/CreatedODataResult.cs

@@ -22,13 +22,14 @@ namespace Microsoft.AspNetCore.OData.Results
     /// <remarks>This action result handles content negotiation and the HTTP prefer header. It generates a location
     /// header containing the edit link of the created entity and, if response has status code: NoContent, also
     /// generates an OData-EntityId header.</remarks>
-    public class CreatedODataResult<T> : ActionResult
+    public class CreatedODataResult<T> : ObjectResult
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="CreatedODataResult{T}"/> class.
         /// </summary>
         /// <param name="entity">The created entity.</param>
         public CreatedODataResult(T entity)
+            : base(entity)
         {
             Entity = entity ?? throw Error.ArgumentNull(nameof(entity));
         }

test/Microsoft.AspNetCore.OData.E2E.Tests/AutoExpand/AutoExpandController.cs

@@ -45,6 +45,12 @@ public IActionResult GetHomeAddress(int key)
 
             return Ok(c.HomeAddress);
         }
+
+        [EnableQuery]
+        public IActionResult Post([FromBody] Customer customer)
+        {
+            return Created(customer);
+        }
     }
 
     public class PeopleController : ODataController

test/Microsoft.AspNetCore.OData.E2E.Tests/AutoExpand/AutoExpandTests.cs

@@ -9,6 +9,7 @@
 using System.Net;
 using System.Net.Http;
 using System.Net.Http.Headers;
+using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.OData.E2E.Tests.Extensions;
 using Microsoft.AspNetCore.OData.TestCommon;
@@ -422,5 +423,34 @@ public async Task NonDefaultMaxExpansionDepthAppliesToAutoExpand(string entitySe
                 "}",
                 content);
         }
+
+        [Fact]
+        public async Task PostCustomer_AutoExpandNavigationProperties()
+        {
+            //Arrange
+            string requestUri = "autoexpand/Customers";
+
+            var content = @"{
+                    'Id':88,
+                    'Order':{ 'Id':1, 'Choice' : {'Id': 101, 'Amount': 10}},
+                    'Friend':{'Id': 99, 'HomeAddress': {'Street': 'Street 1', 'City': 'City 1'}}
+                     }";
+
+            StringContent stringContent = new StringContent(content: content, encoding: Encoding.UTF8, mediaType: "application/json");
+
+            var expectedOrder = "Order\":{\"Id\":1,\"Choice\":{\"Id\":101,\"Amount\":10.0}}";
+            var expectedFriend = "Friend\":{\"Id\":99,\"HomeAddress\":{\"Street\":\"Street 1\",\"City\":\"City 1\",\"CountryOrRegion\":null},\"Order\":null,\"Friend\":null}";
+
+            //Act & Assert
+            using (HttpClient client = CreateClient())
+            using (HttpRequestMessage requestForPost = new HttpRequestMessage(HttpMethod.Post, requestUri) { Content = stringContent })
+            using (HttpResponseMessage response = await client.SendAsync(requestForPost))
+            {
+                Assert.Equal(HttpStatusCode.Created, response.StatusCode);
+                var json = response.Content.ReadAsStringAsync().Result;
+                Assert.Contains(expectedFriend, json);
+                Assert.Contains(expectedOrder, json);
+            }
+        }
     }
 }

test/Microsoft.AspNetCore.OData.Tests/PublicApi/Microsoft.AspNetCore.OData.PublicApi.Net6.bsl

@@ -1648,7 +1648,7 @@ public class Microsoft.AspNetCore.OData.Results.ConflictODataResult : Microsoft.
 	public virtual System.Threading.Tasks.Task ExecuteResultAsync (Microsoft.AspNetCore.Mvc.ActionContext context)
 }
 
-public class Microsoft.AspNetCore.OData.Results.CreatedODataResult`1 : Microsoft.AspNetCore.Mvc.ActionResult, IActionResult {
+public class Microsoft.AspNetCore.OData.Results.CreatedODataResult`1 : Microsoft.AspNetCore.Mvc.ObjectResult, IActionResult, IStatusCodeActionResult {
 	public CreatedODataResult`1 (T entity)
 
 	T Entity  { public virtual get; }

test/Microsoft.AspNetCore.OData.Tests/PublicApi/Microsoft.AspNetCore.OData.PublicApi.NetCore31.bsl

@@ -1648,7 +1648,7 @@ public class Microsoft.AspNetCore.OData.Results.ConflictODataResult : Microsoft.
 	public virtual System.Threading.Tasks.Task ExecuteResultAsync (Microsoft.AspNetCore.Mvc.ActionContext context)
 }
 
-public class Microsoft.AspNetCore.OData.Results.CreatedODataResult`1 : Microsoft.AspNetCore.Mvc.ActionResult, IActionResult {
+public class Microsoft.AspNetCore.OData.Results.CreatedODataResult`1 : Microsoft.AspNetCore.Mvc.ObjectResult, IActionResult, IStatusCodeActionResult {
 	public CreatedODataResult`1 (T entity)
 
 	T Entity  { public virtual get; }