tests/test-gpg.t

tests: add test coverage for lfdirstate invalidation of linear update

f72d73937853 introduced a significant performance regression: All largefiles
are marked 'normallookup' in lfdirstate by linear (or noop) updates and has to
be rehashed by the next command.

To avoid such regressions, keep an eye on the dirstate content after a plain
'hg up'.

#require gpg

Test the GPG extension

  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > gpg=
  > 
  > [gpg]
  > cmd=gpg --no-permission-warning --no-secmem-warning --no-auto-check-trustdb --homedir "$TESTDIR/gpg"
  > EOF
  $ hg init r
  $ cd r
  $ echo foo > foo
  $ hg ci -Amfoo
  adding foo

  $ hg sigs

  $ HGEDITOR=cat hg sign -e 0
  signing 0:e63c23eaa88a
  Added signature for changeset e63c23eaa88a
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: test
  HG: branch 'default'
  HG: added .hgsigs

  $ hg sigs
  hgtest                             0:e63c23eaa88ae77967edcf4ea194d31167c478b0

  $ hg sigcheck 0
  e63c23eaa88a is signed by:
   hgtest

verify that this test has not modified the trustdb.gpg file back in
the main hg working dir
  $ "$TESTDIR/md5sum.py" "$TESTDIR/gpg/trustdb.gpg"
  f6b9c78c65fa9536e7512bb2ceb338ae  */gpg/trustdb.gpg (glob)

don't leak any state to next test run
  $ rm -f "$TESTDIR/gpg/random_seed"

  $ cd ..