[automerge] Add unit tests 2p: a3420707df
'Merged-In: <AOSP-18973920>
Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/18973920

Bug: 235406470
Change-Id: I4008bdf2b573df889addb315af7b0df8107c4b64