tests: don't run test-gpg if not in a working directory
test-gpg has to be run in a mercurial working directory as it uses
that to verify that it hasn't modified the trustdb.gpg file. Skip the
test if it is running in an exploded tarball.
Test the GPG extension
$ "$TESTDIR/hghave" gpg || exit 80
$ if ! hg identify -q > /dev/null; then
> echo "skipped: not a Mercurial working dir" >&2
> exit 80
> fi
$ 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
$ hg sign 0
Signing 0:e63c23eaa88a
$ 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
$ hg --cwd $TESTDIR status gpg