fix(parser): API Gateway V2 request context scope field should be optional (#2961)

Author: leandrodamascena

aws_lambda_powertools/utilities/parser/models/apigwv2.py

@@ -25,7 +25,7 @@ class RequestContextV2AuthorizerIam(BaseModel):
 
 class RequestContextV2AuthorizerJwt(BaseModel):
     claims: Dict[str, Any]
-    scopes: List[str]
+    scopes: Optional[List[str]] = None
 
 
 class RequestContextV2Authorizer(BaseModel):

tests/unit/parser/test_apigwv2.py

@@ -63,6 +63,13 @@ def test_apigw_v2_event_jwt_authorizer():
     assert parsed_event.stageVariables == raw_event["stageVariables"]
 
 
+def test_apigw_v2_event_empty_jwt_scopes():
+    raw_event = load_event("apiGatewayProxyV2Event.json")
+    raw_event["requestContext"]["authorizer"]["jwt"]["scopes"] = None
+
+    APIGatewayProxyEventV2Model(**raw_event)
+
+
 def test_api_gateway_proxy_v2_event_lambda_authorizer():
     raw_event = load_event("apiGatewayProxyV2LambdaAuthorizerEvent.json")
     parsed_event: APIGatewayProxyEventV2Model = APIGatewayProxyEventV2Model(**raw_event)