[C#] use nullable class in petstore openapi spec

modules/openapi-generator/src/main/resources/aspnetcore/3.0/model.mustache

@@ -79,7 +79,7 @@ namespace {{modelPackage}}
         public {{{datatypeWithEnum}}}{{#isNullable}}?{{/isNullable}} {{name}} { get; set; }{{#defaultValue}} = {{{.}}};{{/defaultValue}}
         {{/isEnum}}
         {{^isEnum}}
-        public {{{dataType}}}{{#nullableReferenceTypes}}{{^isContainer}}{{^required}}{{^isNullable}}?{{/isNullable}}{{/required}}{{/isContainer}}{{/nullableReferenceTypes}} {{name}} { get; set; }{{#defaultValue}} = {{{.}}};{{/defaultValue}}
+        public {{{dataType}}}{{#nullableReferenceTypes}}{{^isContainer}}{{^required}}{{^isNullable}}?{{/isNullable}}{{/required}}{{/isContainer}}{{#isContainer}}{{#isNullable}}{{^required}}?{{/required}}{{/isNullable}}{{/isContainer}}{{/nullableReferenceTypes}} {{name}} { get; set; }{{#defaultValue}} = {{{.}}};{{/defaultValue}}
         {{/isEnum}}
         {{^-last}}
 

modules/openapi-generator/src/test/resources/3_0/aspnetcore/petstore.yaml

@@ -607,7 +607,7 @@ paths:
           content:
             application/json:
               schema:
-                $ref: '#/components/schemas/TestNullable'
+                $ref: '#/components/schemas/NullableClass'
 externalDocs:
   description: Find out more about Swagger
   url: 'http://swagger.io'
@@ -651,14 +651,64 @@ components:
       enum:
         - A
         - B
-    TestNullable:
+    NullableClass:
       type: object
       properties:
-        name:
+        integer_prop:
+          type: integer
+          nullable: true
+        number_prop:
+          type: number
+          nullable: true
+        boolean_prop:
+          type: boolean
+          nullable: true
+        string_prop:
           type: string
-        nullableName:
+          nullable: true
+        date_prop:
           type: string
+          format: date
+          nullable: true
+        datetime_prop:
+          type: string
+          format: date-time
+          nullable: true
+        array_nullable_prop:
+          type: array
+          nullable: true
+          items:
+            type: object
+        array_and_items_nullable_prop:
+          type: array
+          nullable: true
+          items:
+            type: object
+            nullable: true
+        array_items_nullable:
+          type: array
+          items:
+            type: object
+            nullable: true
+        object_nullable_prop:
+          type: object
+          nullable: true
+          additionalProperties:
+            type: object
+        object_and_items_nullable_prop:
+          type: object
           nullable: true
+          additionalProperties:
+            type: object
+            nullable: true
+        object_items_nullable:
+          type: object
+          additionalProperties:
+            type: object
+            nullable: true
+      additionalProperties:
+        type: object
+        nullable: true
     Order:
       title: Pet Order
       description: An order for a pets from the pet store

samples/server/petstore/aspnetcore-3.0/.openapi-generator/FILES

@@ -20,11 +20,11 @@ src/Org.OpenAPITools/Models/ApiResponse.cs
 src/Org.OpenAPITools/Models/Cat.cs
 src/Org.OpenAPITools/Models/Category.cs
 src/Org.OpenAPITools/Models/Dog.cs
+src/Org.OpenAPITools/Models/NullableClass.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
 src/Org.OpenAPITools/Models/TestEnum.cs
-src/Org.OpenAPITools/Models/TestNullable.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Program.cs

samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/Controllers/FakeApi.cs

@@ -36,18 +36,18 @@ public class FakeApiController : ControllerBase
         [Route("/v2/fake/nullable_example_test")]
         [ValidateModelState]
         [SwaggerOperation("FakeNullableExampleTest")]
-        [SwaggerResponse(statusCode: 200, type: typeof(TestNullable), description: "Successful operation")]
+        [SwaggerResponse(statusCode: 200, type: typeof(NullableClass), description: "Successful operation")]
         public virtual IActionResult FakeNullableExampleTest()
         {
 
             //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
-            // return StatusCode(200, default(TestNullable));
+            // return StatusCode(200, default(NullableClass));
             string exampleJson = null;
-            exampleJson = "{\n  \"nullableName\" : \"nullableName\",\n  \"name\" : \"name\"\n}";
+            exampleJson = "{\n  \"number_prop\" : 6.027456183070403,\n  \"datetime_prop\" : \"2000-01-23T04:56:07.000+00:00\",\n  \"object_nullable_prop\" : {\n    \"key\" : \"{}\"\n  },\n  \"boolean_prop\" : true,\n  \"object_and_items_nullable_prop\" : {\n    \"key\" : \"{}\"\n  },\n  \"string_prop\" : \"string_prop\",\n  \"array_nullable_prop\" : [ \"{}\", \"{}\" ],\n  \"integer_prop\" : 0,\n  \"array_and_items_nullable_prop\" : [ \"{}\", \"{}\" ],\n  \"object_items_nullable\" : {\n    \"key\" : \"{}\"\n  },\n  \"date_prop\" : \"2000-01-23\",\n  \"array_items_nullable\" : [ \"{}\", \"{}\" ]\n}";
 
             var example = exampleJson != null
-            ? JsonConvert.DeserializeObject<TestNullable>(exampleJson)
-            : default(TestNullable);
+            ? JsonConvert.DeserializeObject<NullableClass>(exampleJson)
+            : default(NullableClass);
             //TODO: Change the data returned
             return new ObjectResult(example);
         }