Unit tests for Active device manager

Bug: 77191556
Test: unit test
Change-Id: If3453e8db47cd630f1cb9444ee90e2f5aa5043eb
Merged-In: If4f66f3ace85244a9d6aab6e98a1bdc3c401e560
(cherry picked from commit f9007fd5ee2ea88c83fd8577797733435188550f)
2 files changed