add additional assertions to test specific todoitem return

Author: NullVoxPopuli

test/JsonApiDotNetCoreExampleTests/Acceptance/TodoItemsControllerTests.cs

@@ -114,6 +114,9 @@ public async Task Can_Filter_TodoItems_Using_IsNotNull_Operator()
 
             // Assert
             Assert.NotEmpty(deserializedBody);
+
+            foreach (var todoItemResult in deserializedBody)
+                Assert.Equal(todoItem.Ordinal, todoItemResult.Ordinal);
         }
 
         [Fact]
@@ -139,6 +142,9 @@ public async Task Can_Filter_TodoItems_Using_IsNull_Operator()
 
             // Assert
             Assert.NotEmpty(deserializedBody);
+
+            foreach (var todoItemResult in deserializedBody)
+                Assert.Equal(todoItem.Ordinal, todoItemResult.Ordinal);
         }
 
         [Fact]