Add a test for timestamp handling.
Add a test for timestamp handling.

Change-Id: I0a57b04b16a05a1787311505d562b7f0e6485e1b
GitOrigin-RevId: 113a298b39fa1d5903b7dbaa48451a1f88984285

googlecloudrobotics/core,googlecloudrobotics/core,googlecloudrobotics/core