unittest derived interfaces

test/Microsoft.AspNetCore.OData.E2E.Tests/DerivedInterfaces/DerivedInterfacesControllers.cs

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+//-----------------------------------------------------------------------------
+// <copyright file="DerivedInterfacesControllers.cs" company=".NET Foundation">
+//      Copyright (c) .NET Foundation and Contributors. All rights reserved.
+//      See License.txt in the project root for license information.
+// </copyright>
+//------------------------------------------------------------------------------
+
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.OData.Formatter;
+using Microsoft.AspNetCore.OData.Query;
+using Microsoft.AspNetCore.OData.Routing.Controllers;
+
+namespace Microsoft.AspNetCore.OData.E2E.Tests.DerivedInterfaces
+{
+    public class CustomersController : ODataController
+    {
+        static List<Customer> Customers { get; set; }
+
+        static CustomersController()
+        {
+            Customers = new List<Customer>
+            {
+                new Customer {
+                    Id = 1,
+                    Name = "Customer 1",
+                    Order = new VipOrder()
+                    {
+                        Id = 10,
+                        Product = "Test Product 1",
+                        LoyaltyCardNo = "42"
+                    }
+                },
+                new Customer {
+                    Id = 2,
+                    Name = "Customer 1",
+                    Order = new VipOrder()
+                    {
+                        Id = 11,
+                        Product = "Test Product 2",
+                        LoyaltyCardNo = "43"
+                    }
+                },
+            };
+        }
+
+        [EnableQuery(AllowedQueryOptions = AllowedQueryOptions.All)]
+        [HttpGet("odata/Customers/Microsoft.AspNetCore.OData.E2E.Tests.DerivedInterfaces.Customers")]
+        public IActionResult Get()
+        {
+            return Ok(Customers);
+        }
+    }
+}

test/Microsoft.AspNetCore.OData.E2E.Tests/DerivedInterfaces/DerivedInterfacesDataModel.cs

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+//-----------------------------------------------------------------------------
+// <copyright file="DerivedInterfacesDataModel.cs" company=".NET Foundation">
+//      Copyright (c) .NET Foundation and Contributors. All rights reserved.
+//      See License.txt in the project root for license information.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace Microsoft.AspNetCore.OData.E2E.Tests.DerivedInterfaces
+{
+    public class Customer : IIdentifiable
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+
+        public IOrder Order { get; set; }
+    }
+
+    public class VipOrder : IOrder
+    {
+        public int Id { get; set; }
+        public string Product { get; set; }
+        public string LoyaltyCardNo { get; set; }
+    }
+
+    public interface IOrder : IIdentifiable
+    {
+        public string Product { get; set; }
+    }
+
+    public interface IIdentifiable
+    {
+        public int Id { get; set; }
+    }
+}

test/Microsoft.AspNetCore.OData.E2E.Tests/DerivedInterfaces/DerivedInterfacesTests.cs

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+//-----------------------------------------------------------------------------
+// <copyright file="DerivedInterfacesTests.cs" company=".NET Foundation">
+//      Copyright (c) .NET Foundation and Contributors. All rights reserved.
+//      See License.txt in the project root for license information.
+// </copyright>
+//------------------------------------------------------------------------------
+
+using System.Net.Http;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.OData.TestCommon;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.OData.Edm;
+using Microsoft.OData.ModelBuilder;
+using Xunit;
+
+namespace Microsoft.AspNetCore.OData.E2E.Tests.DerivedInterfaces
+{
+    public class DerivedTypeTests : WebApiTestBase<DerivedTypeTests>
+    {
+        public DerivedTypeTests(WebApiTestFixture<DerivedTypeTests> fixture)
+            : base(fixture)
+        {
+        }
+
+        protected static void UpdateConfigureServices(IServiceCollection services)
+        {
+            services.ConfigureControllers(typeof(CustomersController));
+            services.AddControllers().AddOData(opt => opt.AddRouteComponents("odata", GetEdmModel()).Count().Filter().OrderBy().Expand().SetMaxTop(null).Select());
+        }
+
+        private static IEdmModel GetEdmModel()
+        {
+            ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
+            builder.EntitySet<Customer>("Customers");
+            return builder.GetEdmModel();
+        }
+
+        [Fact]
+        public async Task QueryCustomersFiltered()
+        {
+            // Arrange
+            string requestUri = "/odata/Customers?$filter=Order/Id eq 11";
+
+            HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, requestUri);
+            HttpClient client = CreateClient();
+
+            // Act
+            HttpResponseMessage response = await client.SendAsync(request);
+            string py = await response.Content.ReadAsStringAsync();
+
+            // Assert
+            Assert.DoesNotContain("error", py);
+            Assert.True(response.IsSuccessStatusCode);
+
+            string expectedContent = "\"Id\":2,\"Name\":\"Customer 1\"";
+            Assert.Contains(expectedContent, expectedContent);
+        } 
+    }
+}