tests: skip running flatpak at build time if bwrap doesn't work

Distribution autobuilders are often more locked-down than the
environment in which the distribution binaries actually run.

Signed-off-by: Simon McVittie <smcv@debian.org>

tests/libtest.sh

@@ -192,6 +192,17 @@ run_sh () {
     ${CMD_PREFIX} flatpak run --command=bash ${ARGS-} org.test.Hello -c "$*"
 }
 
+skip_without_bwrap () {
+    if [ -z "${FLATPAK_BWRAP:-}" ]; then
+        # running installed-tests: assume we know what we're doing
+        :
+    elif ! "$FLATPAK_BWRAP" --ro-bind / / /bin/true > bwrap-result 2>&1; then
+        sed -e 's/^/# /' < bwrap-result
+        echo "1..0 # SKIP Cannot run bwrap"
+        exit 0
+    fi
+}
+
 sed s#@testdir@#${test_builddir}# ${test_srcdir}/session.conf.in > session.conf
 eval `dbus-launch --config-file=session.conf --sh-syntax`
 

tests/test-builder.sh

@@ -21,6 +21,8 @@ set -euo pipefail
 
 . $(dirname $0)/libtest.sh
 
+skip_without_bwrap
+
 echo "1..3"
 
 setup_repo

tests/test-run.sh

@@ -21,6 +21,8 @@ set -euo pipefail
 
 . $(dirname $0)/libtest.sh
 
+skip_without_bwrap
+
 echo "1..7"
 
 setup_repo