AT_BANNER([lockfile unit tests])

m4_define([CHECK_LOCKFILE],
  [AT_SETUP([m4_translit([$1], [_], [ ])])
   AT_KEYWORDS([lockfile])
   AT_CHECK([test-lockfile $1], [0], [$1: success (m4_if(
     [$2], [1], [$2 child], [$2 children]))
], [$3])
   AT_CLEANUP])

CHECK_LOCKFILE([lock_and_unlock], [0])

CHECK_LOCKFILE([lock_and_unlock_twice], [0])

CHECK_LOCKFILE([lock_blocks_same_process], [0],
  [lockfile|WARN|.file.~lock~: failed to lock file: Resource deadlock avoided
])

CHECK_LOCKFILE([lock_blocks_same_process_twice], [0],
  [lockfile|WARN|.file.~lock~: failed to lock file: Resource deadlock avoided
lockfile|WARN|.file.~lock~: failed to lock file: Resource deadlock avoided
])

CHECK_LOCKFILE([lock_blocks_other_process], [1],
  [lockfile|WARN|.file.~lock~: child does not inherit lock
lockfile|WARN|.file.~lock~: failed to lock file: Resource temporarily unavailable
])

CHECK_LOCKFILE([lock_twice_blocks_other_process], [1],
  [lockfile|WARN|.file.~lock~: failed to lock file: Resource deadlock avoided
lockfile|WARN|.file.~lock~: child does not inherit lock
lockfile|WARN|.file.~lock~: failed to lock file: Resource temporarily unavailable
])

CHECK_LOCKFILE([lock_and_unlock_allows_other_process], [1])

CHECK_LOCKFILE([lock_multiple], [0],
  [lockfile|WARN|.a.~lock~: failed to lock file: Resource deadlock avoided
])

CHECK_LOCKFILE([lock_symlink], [0],
  [lockfile|WARN|.a.~lock~: failed to lock file: Resource deadlock avoided
lockfile|WARN|.b.~lock~: failed to lock file: Resource deadlock avoided
lockfile|WARN|.b.~lock~: failed to lock file: Resource deadlock avoided
lockfile|WARN|.a.~lock~: failed to lock file: Resource deadlock avoided
])

CHECK_LOCKFILE([lock_symlink_to_dir], [0],
  [lockfile|WARN|dir/.b.~lock~: failed to lock file: Resource deadlock avoided
])