test: explicitly use bash

To avoid unexpected surprised in CIs with different default shell.

diff --git a/test/units/testsuite-23.runtime-bind-paths.sh b/test/units/testsuite-23.runtime-bind-paths.sh
index c63586e1a2b27a6dda1f699045d5301d0b48af29..8dc4d9123c7eef29aa38271d4f388ca6e15e980b 100755 (executable)
--- a/test/units/testsuite-23.runtime-bind-paths.sh
+++ b/test/units/testsuite-23.runtime-bind-paths.sh
@@ -27,7 +27,7 @@ echo "MARKER_RUNTIME" >/run/testsuite-23-marker-runtime
 
 systemctl bind --mkdir testsuite-23-namespaced.service /run/testsuite-23-marker-runtime /tmp/testfile-marker-runtime
 
-timeout 10 sh -xec 'while [[ "$(systemctl show -P SubState testsuite-23-namespaced.service)" == running ]]; do sleep .5; done'
+timeout 10 bash -xec 'while [[ "$(systemctl show -P SubState testsuite-23-namespaced.service)" == running ]]; do sleep .5; done'
 systemctl is-active testsuite-23-namespaced.service
 
 # Now test that systemctl bind fails when attempted on a non-namespaced unit
@@ -35,5 +35,5 @@ systemctl start testsuite-23-non-namespaced.service
 
 (! systemctl bind --mkdir testsuite-49-non-namespaced.service /run/testsuite-23-marker-runtime /tmp/testfile-marker-runtime)
 
-timeout 10 sh -xec 'while [[ "$(systemctl show -P SubState testsuite-23-non-namespaced.service)" == running ]]; do sleep .5; done'
+timeout 10 bash -xec 'while [[ "$(systemctl show -P SubState testsuite-23-non-namespaced.service)" == running ]]; do sleep .5; done'
 (! systemctl is-active testsuite-23-non-namespaced.service)