test: add a couple of sanity tests for journalctl

(cherry picked from commit ca46781c5f)

test/units/testsuite-04.sh

@@ -119,6 +119,44 @@ systemctl start silent-success
 journalctl --sync
 [[ -z "$(journalctl -b -q -u silent-success.service)" ]]
 
+# Exercise the matching machinery
+SYSTEMD_LOG_LEVEL=debug journalctl -b -n 1 /dev/null /dev/zero /dev/null /dev/null /dev/null
+journalctl -b -n 1 /bin/true /bin/false
+journalctl -b -n 1 /bin/true + /bin/false
+journalctl -b -n 1 -r --unit "systemd*"
+
+systemd-run --user -M "testuser@.host" /bin/echo hello
+journalctl --sync
+journalctl -b -n 1 -r --user-unit "*"
+
+(! journalctl -b /dev/lets-hope-this-doesnt-exist)
+(! journalctl -b /dev/null /dev/zero /dev/this-also-shouldnt-exist)
+(! journalctl -b --unit "this-unit-should-not-exist*")
+
+# Facilities & priorities
+journalctl --facility help
+journalctl --facility kern -n 1
+journalctl --facility syslog --priority 0..3 -n 1
+journalctl --facility syslog --priority 3..0 -n 1
+journalctl --facility user --priority 0..0 -n 1
+journalctl --facility daemon --priority warning -n 1
+journalctl --facility daemon --priority warning..info -n 1
+journalctl --facility daemon --priority notice..crit -n 1
+journalctl --facility daemon --priority 5..crit -n 1
+
+(! journalctl --facility hopefully-an-unknown-facility)
+(! journalctl --priority hello-world)
+(! journalctl --priority 0..128)
+(! journalctl --priority 0..systemd)
+
+# Other options
+journalctl --disk-usage
+journalctl --dmesg -n 1
+journalctl --fields
+journalctl --list-boots
+journalctl --update-catalog
+journalctl --list-catalog
+
 # Add new tests before here, the journald restarts below
 # may make tests flappy.