#21582 [BUG][dart-dio] Bug generating inline enums with common names added petstore test

Author: tomcra

modules/openapi-generator/src/test/resources/3_0/dart/petstore-with-fake-endpoints-models-for-testing.yaml

@@ -1303,6 +1303,19 @@ paths:
       responses:
         200:
           description: The instance started successfully
+  /fake/duplicate-inline-enums:
+    get:
+      tags:
+        - fake
+      summary: test objects with duplicate inline enums see issue# 21582
+      operationId: fake-duplicate-inline-enum
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ObjectThatReferencesObjectsWithDuplicateInlineEnums'
 servers:
   - url: 'http://{server}.swagger.io:{port}/v2'
     description: petstore server
@@ -2081,3 +2094,36 @@ components:
           $ref: '#/components/schemas/TestEnum'
           default: ""
       title: TestItem
+    ObjectWithInlineEnum:
+      type: object
+      properties:
+        attribute:
+          description: 'Object one attribute enum'
+          type: 'array'
+          uniqueItems: true
+          items:
+            type: 'string'
+            enum: [
+              'value_one',
+              'value_two'
+            ]
+    ObjectWithDuplicateInlineEnum:
+      type: object
+      properties:
+        attribute:
+          description: 'Object two attribute enum'
+          type: 'array'
+          uniqueItems: true
+          items:
+            type: 'string'
+            enum: [
+              'value_one',
+              'value_two'
+            ]
+    ObjectThatReferencesObjectsWithDuplicateInlineEnums:
+      type: object
+      properties:
+        object_one:
+          $ref: '#/components/schemas/ObjectWithInlineEnum'
+        object_two:
+          $ref: '#/components/schemas/ObjectWithDuplicateInlineEnum'