tests/test-issue433.t

opener: force copy on 'a'ppend if nlinks() returns 0 (issue1922)

If pywin32 is not installed, 'os.lstat(pathname).st_nlink' is used for
nlinks(), which is always zero for all files on Windows.

To make sure we break up hardlinks if pywin32 is missing, we force
nlink = 2 if nlinks() returns < 1.

(this completely fixes issue1922)

http://mercurial.selenic.com/bts/issue433

  $ hg init
  $ echo a > a
  $ hg commit -Ama
  adding a

  $ hg parents -r 0 doesnotexist
  abort: 'doesnotexist' not found in manifest!
  [255]