chore(idempotency): address comments

Author: rubenfonseca

aws_lambda_powertools/utilities/idempotency/persistence/base.py

@@ -353,10 +353,14 @@ def save_inprogress(self, data: Dict[str, Any], remaining_time_in_millis: Option
         if remaining_time_in_millis:
             now = datetime.datetime.now()
             period = datetime.timedelta(milliseconds=remaining_time_in_millis)
+            timestamp = (now + period).timestamp()
 
-            data_record.in_progress_expiry_timestamp = int((now + period).timestamp() * 1000)
+            data_record.in_progress_expiry_timestamp = int(timestamp * 1000)
         else:
-            warnings.warn("Expires in progress is enabled but we couldn't determine the remaining time left")
+            warnings.warn(
+                "Couldn't determine the remaining time left. "
+                "Did you call register_lambda_context on IdempotencyConfig?"
+            )
 
         logger.debug(f"Saving in progress record for idempotency key: {data_record.idempotency_key}")
 

tests/functional/idempotency/test_idempotency.py

@@ -782,7 +782,10 @@ def function(record):
         warnings.simplefilter("default")
         function(record=mock_event)
         assert len(w) == 1
-        assert str(w[-1].message) == "Expires in progress is enabled but we couldn't determine the remaining time left"
+        assert (
+            str(w[-1].message)
+            == "Couldn't determine the remaining time left. Did you call register_lambda_context on IdempotencyConfig?"
+        )
 
 
 def test_data_record_invalid_status_value():