view tests/test-dirstate-backup.t @ 42901:75bd5990d8fe

run-tests: add a dedicated 'isoptional' function

This is clearer than repeated manual call to to 'endswith'.

(This is a gratuitous cleanup that I made while investigating a bug).

Set up

  $ hg init repo
  $ cd repo

Try to import an empty patch

  $ hg import --no-commit - <<EOF
  > EOF
  applying patch from stdin
  abort: stdin: no diffs found
  [255]

No dirstate backups are left behind

  $ ls .hg/dirstate* | sort
  .hg/dirstate