libtest: add has_gpgme() helper function

Closes: #469
Approved by: cgwalters

tests/libtest.sh

@@ -420,6 +420,10 @@ skip_without_fuse () {
     [ -e /etc/mtab ] || skip "no /etc/mtab"
 }
 
+has_gpgme () {
+    ${CMD_PREFIX} ostree --version | grep -q -e '\+gpgme'
+}
+
 libtest_cleanup_gpg () {
     gpg-connect-agent --homedir ${test_tmpdir}/gpghome killagent /bye || true
 }

tests/test-commit-sign.sh

@@ -19,13 +19,13 @@
 
 set -euo pipefail
 
-if ! ostree --version | grep -q -e '\+gpgme'; then
+. $(dirname $0)/libtest.sh
+
+if ! has_gpgme; then
     echo "1..0 #SKIP no gpg support compiled in"
     exit 0
 fi
 
-. $(dirname $0)/libtest.sh
-
 echo "1..1"
 
 keyid="472CDAFA"

tests/test-gpg-signed-commit.sh

@@ -20,13 +20,13 @@
 
 set -euo pipefail
 
-if ! ostree --version | grep -q -e '\+gpgme'; then
+. $(dirname $0)/libtest.sh
+
+if ! has_gpgme; then
     echo "1..0 #SKIP no gpgme support compiled in"
     exit 0
 fi
 
-. $(dirname $0)/libtest.sh
-
 echo "1..1"
 
 setup_test_repository "archive-z2"

tests/test-pull-mirror-summary.sh

@@ -61,7 +61,7 @@ find repo/objects -name '*.filez' | while read name; do
 done
 echo "ok pull mirror summary"
 
-if ! ${CMD_PREFIX} ostree --version | grep -q -e '\+gpgme'; then
+if ! has_gpgme; then
     exit 0;
 fi
 

tests/test-pull-summary-sigs.sh

@@ -54,7 +54,7 @@ assert_file_has_content yet-another-copy/yet-another-hello-world "hello world ye
 ${CMD_PREFIX} ostree --repo=repo fsck
 echo "ok pull mirror summary"
 
-if ! ${CMD_PREFIX} ostree --version | grep -q -e '\+gpgme'; then
+if ! has_gpgme; then
     exit 0;
 fi