[Testing] [Bug]: Return updated operations on empty checkpoint #438

 CheckpointDurableExecutionRequest(DurableExecutionArn=<<my-arn>>, CheckpointToken=<<my-token>>, Updates=[])

        if updates:
            checkpoint_output = self._checkpoint_processor.process_checkpoint(
                checkpoint_token=checkpoint_token,
                updates=updates,
                client_token=client_token,
            )

            new_execution_state = None
            if checkpoint_output.new_execution_state:
                new_execution_state = CheckpointUpdatedExecutionState(
                    operations=checkpoint_output.new_execution_state.operations,
                    next_marker=checkpoint_output.new_execution_state.next_marker,
                )

            return CheckpointDurableExecutionResponse(
                checkpoint_token=checkpoint_output.checkpoint_token,
                new_execution_state=new_execution_state,
            )

        # Save execution state after generating new token
        new_checkpoint_token = execution.get_new_checkpoint_token()
        self._store.update(execution)

        return CheckpointDurableExecutionResponse(
            checkpoint_token=new_checkpoint_token,
            new_execution_state=None,
        )