Merge "Add unit tests" into tm-mainline-prod am: cd99b59406

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/19001890

Change-Id: I2eccd98ac686abad90980d4a11db278a26d8eec9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>