view tests/test-dirstate-backup.t @ 51724:a3dc962cac62

typing: add type hints to `mercurial.policy`

Mostly trivial, but this seems like the logical module to use to inject the
hints from `cext`, `pure`, etc, given that this file has the fallback policy.
This is a first step.

There doesn't appear to be a predefined type for a module in py3.7, so those are
omitted for now.

Set up

  $ hg init repo
  $ cd repo
  $ echo a > a
  $ hg add a
  $ hg commit -m a

Try to import an empty patch

  $ hg import --no-commit - <<EOF
  > EOF
  applying patch from stdin
  abort: stdin: no diffs found
  [10]

No dirstate backups are left behind

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