[Fix] DELETE methods should always return response status code 204 (#367)

* Delete responses always return 204

* Update tests

* Update release note

Author: irvinesunday

src/Microsoft.OpenApi.OData.Reader/Microsoft.OpenAPI.OData.Reader.csproj

@@ -15,20 +15,13 @@
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <PackageId>Microsoft.OpenApi.OData</PackageId>
     <SignAssembly>true</SignAssembly>
-    <Version>1.3.0</Version>
+    <Version>1.4.0-preview1</Version>
     <Description>This package contains the codes you need to convert OData CSDL to Open API Document of Model.</Description>
     <Copyright>© Microsoft Corporation. All rights reserved.</Copyright>
     <PackageTags>Microsoft OpenApi OData EDM</PackageTags>
     <RepositoryUrl>https://github.com/Microsoft/OpenAPI.NET.OData</RepositoryUrl>
     <PackageReleaseNotes>
-- Update key path parameter descriptions #309
-- Skips adding a $count path if a similar count() function path exists #347
-- Checks whether path exists before adding it to the paths dictionary #343
-- Strips namespace prefix from operation segments and aliases type cast segments #348
-- Return response status code 2XX for PUT operations of stream properties when UseSuccessStatusCodeRange is enabled #310
-- Adds $value segment to paths with entity types with base types with HasStream=true #314
-- Uses SemVerVersion in place of Version to Get or Set the metadata version in the OpenAPI document #346
-- Resolves operationId and tag names for OData cast paths #324
+- DELETE methods should always return response status code 204
     </PackageReleaseNotes>
     <AssemblyName>Microsoft.OpenApi.OData.Reader</AssemblyName>
     <AssemblyOriginatorKeyFile>..\..\tool\Microsoft.OpenApi.OData.snk</AssemblyOriginatorKeyFile>

src/Microsoft.OpenApi.OData.Reader/Operation/EntityDeleteOperationHandler.cs

@@ -81,7 +81,11 @@ protected override void SetParameters(OpenApiOperation operation)
         /// <inheritdoc/>
         protected override void SetResponses(OpenApiOperation operation)
         {
-            operation.AddErrorResponses(Context.Settings, true);
+            // Response for Delete methods should be 204 No Content
+            OpenApiConvertSettings settings = Context.Settings.Clone();
+            settings.UseSuccessStatusCodeRange = false;
+            
+            operation.AddErrorResponses(settings, true);
             base.SetResponses(operation);
         }
 

src/Microsoft.OpenApi.OData.Reader/Operation/NavigationPropertyDeleteOperationHandler.cs

@@ -80,7 +80,11 @@ protected override void SetSecurity(OpenApiOperation operation)
         /// <inheritdoc/>
         protected override void SetResponses(OpenApiOperation operation)
         {
-            operation.AddErrorResponses(Context.Settings, true);
+            // Response for Delete methods should be 204 No Content
+            OpenApiConvertSettings settings = Context.Settings.Clone();
+            settings.UseSuccessStatusCodeRange = false;
+            
+            operation.AddErrorResponses(settings, true);
             base.SetResponses(operation);
         }
 

src/Microsoft.OpenApi.OData.Reader/Operation/RefDeleteOperationHandler.cs

@@ -91,7 +91,11 @@ protected override void SetSecurity(OpenApiOperation operation)
         /// <inheritdoc/>
         protected override void SetResponses(OpenApiOperation operation)
         {
-    		operation.AddErrorResponses(Context.Settings, true);
+            // Response for Delete methods should be 204 No Content
+            OpenApiConvertSettings settings = Context.Settings.Clone();
+            settings.UseSuccessStatusCodeRange = false;
+            
+            operation.AddErrorResponses(settings, true);
             base.SetResponses(operation);
         }
 

test/Microsoft.OpenAPI.OData.Reader.Tests/Operation/NavigationPropertyDeleteOperationHandlerTests.cs

@@ -16,15 +16,18 @@ public class NavigationPropertyDeleteOperationHandlerTests
         private NavigationPropertyDeleteOperationHandler _operationHandler = new NavigationPropertyDeleteOperationHandler();
 
         [Theory]
-        [InlineData(true)]
-        [InlineData(false)]
-        public void CreateNavigationDeleteOperationReturnsCorrectOperation(bool enableOperationId)
+        [InlineData(true, false)]
+        [InlineData(false, false)]
+        [InlineData(true, true)]
+        [InlineData(false, true)]
+        public void CreateNavigationDeleteOperationReturnsCorrectOperation(bool enableOperationId, bool useSuccessStatusCodeRange)
         {
             // Arrange
             IEdmModel model = EdmModelHelper.TripServiceModel;
             OpenApiConvertSettings settings = new OpenApiConvertSettings
             {
-                EnableOperationId = enableOperationId
+                EnableOperationId = enableOperationId,
+                UseSuccessStatusCodeRange = useSuccessStatusCodeRange
             };
             ODataContext context = new ODataContext(model, settings);
             IEdmEntitySet people = model.EntityContainer.FindEntitySet("People");