pre-upload: add unittests for commit message checks

The Change-Id checker was a little too forgiving, so tighten that up.

BUG=None
TEST=`./pre-upload_unittest.py` passes

Change-Id: I338ac029d51584dea87816aeb8f12647f7720589
Reviewed-on: https://chromium-review.googlesource.com/226681
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Steve Fung <stevefung@chromium.org>
2 files changed