fix(event-handler): fix operation tags schema generation (#3528)

aws_lambda_powertools/event_handler/api_gateway.py

@@ -559,7 +559,7 @@ def _openapi_operation_metadata(self, operation_ids: Set[str]) -> Dict[str, Any]
 
         # Ensure tags is added to the operation
         if self.tags:
-            operation["tags"] = [{"name": tag for tag in self.tags}]
+            operation["tags"] = self.tags
 
         # Ensure summary is added to the operation
         operation["summary"] = self._openapi_operation_summary()

aws_lambda_powertools/event_handler/openapi/models.py

@@ -380,7 +380,7 @@ class Config:
 
 # https://swagger.io/specification/#operation-object
 class Operation(BaseModel):
-    tags: Optional[List[Tag]] = None
+    tags: Optional[List[str]] = None
     summary: Optional[str] = None
     description: Optional[str] = None
     externalDocs: Optional[ExternalDocumentation] = None

tests/functional/event_handler/test_openapi_params.py

@@ -10,7 +10,6 @@
     Parameter,
     ParameterInType,
     Schema,
-    Tag,
 )
 from aws_lambda_powertools.event_handler.openapi.params import (
     Body,
@@ -119,7 +118,7 @@ def handler(
     assert get.summary == "Get Users"
     assert get.operationId == "GetUsers"
     assert get.description == "Get paginated users"
-    assert get.tags == [Tag(name="Users")]
+    assert get.tags == ["Users"]
 
     parameter = get.parameters[0]
     assert parameter.required is False
@@ -378,7 +377,7 @@ def handler():
     assert len(get.tags) == 1
 
     tag = get.tags[0]
-    assert tag.name == "Users"
+    assert tag == "Users"
 
 
 def test_openapi_with_excluded_operations():
@@ -421,7 +420,7 @@ def handler():
     schema = app.get_openapi_schema()
     tags = schema.paths["/example-resource"].put.tags
     assert len(tags) == 1
-    assert tags[0].name == "Example"
+    assert tags[0] == "Example"
 
 
 def test_create_header():