tests: Skip seccomp tests when seccomp is unavailable

Fixes the testsuite with `-Dseccomp=disabled`.

tests/libtest.sh

@@ -631,6 +631,12 @@ skip_without_libsystemd () {
   fi
 }
 
+skip_without_seccomp () {
+    if [ "${HAVE_SECCOMP:-0}" != "1" ]; then
+        skip "seccomp support disabled"
+    fi
+}
+
 FLATPAK_SYSTEM_CERTS_D=$(pwd)/certs.d
 export FLATPAK_SYSTEM_CERTS_D
 

tests/meson.build

@@ -30,6 +30,7 @@ tests_environment = {
   'G_TEST_SRCDIR' : meson.current_source_dir(),
   'FLATPAK_BWRAP' : env_flatpak_bwrap,
   'FLATPAK_DBUSPROXY' : env_flatpak_dbusproxy,
+  'HAVE_SECCOMP' : libseccomp_dep.found() ? '1' : '0',
 }
 
 tests_environment_prepend = {

tests/test-seccomp.sh

@@ -6,6 +6,7 @@ set -euo pipefail
 
 . $(dirname $0)/libtest.sh
 
+skip_without_seccomp
 skip_without_bwrap
 
 echo "1..18"