grep "gpg: Good signature" actual
'
+test_expect_success GPG 'check config gpg.format values' '
+ test_config gpg.format openpgp &&
+ git commit -S --amend -m "success" &&
+ test_config gpg.format OpEnPgP &&
+ test_must_fail git commit -S --amend -m "fail"
+'
+
test_done