tree a2db7f78ed1af0dba47d098d67a515c88cdbc7ca
parent dbb137e0f3ccaef7db4982127da1c7bdfc581e98
author Dave Borowitz <dborowitz@google.com> 1500300070 -0400
committer Dave Borowitz <dborowitz@google.com> 1501083573 -0400

PackedBatchRefUpdate: Write reflogs

On-disk reflogs are not stored in the packed-refs file, so we cannot
ensure atomic updates. We choose the lesser evil of dropping failed
reflog updates on the floor, rather than throwing an exception even
though the underlying ref updates succeeded.

Add tests for reflogs to BatchRefUpdateTest.

Change-Id: Ia456ba9e36af8e01fde81b19af46a72378e614cd