systemtests: improve volume-prune test

Issue #1257: Prune volume command may crash the director

The test now also runs manual pruning and checks that the job-message
emitted contains the correct volume name.

systemtests/tests/volume-pruning/testrunner

@@ -58,6 +58,14 @@ restore client=bareos-fd fileset=SelfTest where=$tmp/bareos-restores select all
 yes
 wait
 messages
+
+@$out $tmp/log2.out
+@#
+@# now prune using the commandline
+@#
+@sleep 6
+prune volume=TestVolume001 yes
+messages
 quit
 END_OF_DATA
 
@@ -67,6 +75,15 @@ stop_bareos
 
 check_two_logs
 
-grep "Purging the following JobIds: 1,2,3,4,5,6" "$tmp"/log1.out || estat=1
+if ! grep "Purging the following JobIds: 1,2,3,4,5,6" "$tmp"/log1.out; then
+  echo "Pruned jobs don't match expectations." >&2
+  estat=1
+fi
+
+if ! grep -F 'Volume "TestVolume001" contains no jobs after pruning.' \
+    $tmp/log2.out; then
+  echo "Pruning message is wrong." >&2
+  estat=1
+fi
 
 end_test