tree a8a4078e066a84ec5c609767fa21a864e4a42f12
parent 86ec41e2471359a7dbe5b3bc791145cc54c6c3f8
author Bernardo Rufino <brufino@google.com> 1531478305 +0100
committer Bernardo Rufino <brufino@google.com> 1532605343 +0000

Increase PerformBackupTask unit coverage 3

With KV Refactor in mind:
* Tests around calling agent.
* Tests around agent writing data.
* Tests around transport handling agent data.
* Small modification on ShadowBackupData{Input,Output} to allow empty data.
* Small refactor.

Test: atest PerformBackupTaskTest
Change-Id: Ia9296859926d09d5bbcb0532fb869ace110240e4