Add a test that Network#getNetworkHandle() behaves sanely.

Additionally:
    - make zero more obvious for debugging, rather than emitting
      some inscrutable magic value.

Bug: 19537384
Change-Id: Iac9a3297a0dda1ba3d69fd01cf6de81f01fd837e
2 files changed
tree: cb3340f1bcc0131ace0863e5f1bf57032670d6ec
  1. core/
  2. services/
  3. tests/