test: new, verify that a run task can call initctl

Follow-up to #362

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

test/run-task-tricks.sh

@@ -0,0 +1,59 @@
+#!/bin/sh
+#
+# Verifies that a run task can call initctl at bootstrap and runlevel 2,
+# without blocking, performing serveral tasks:
+#
+#  1. Query running services
+#  2. Stop/Start a running service
+#  3. Restart a service
+#
+
+TEST_DIR=$(dirname "$0")
+#DEBUG=1
+
+# shellcheck disable=SC2034
+BOOTSTRAP="run [S] /bin/ready.sh                         -- Ready steady go\n\
+run [S] name:one   initctl                    -- Query status\n\
+service [S234] /sbin/service.sh               -- Background service\n\
+run [2] name:two   initctl stop    service.sh -- Stopping service\n\
+run [3] name:three initctl start   service.sh -- Starting service again\n\
+run [4] name:four  initctl restart service.sh -- Restart service"
+# shellcheck disable=SC2034
+RCLOCAL="echo \"$0 ==============\" &1>2"
+
+# shellcheck source=/dev/null
+. "$TEST_DIR/lib/setup.sh"
+
+test_setup()
+{
+    say "Test start $(date)"
+ }
+
+test_teardown()
+{
+    say "Test done $(date)"
+}
+
+say "$FINIT_CONF:"
+run "cat $FINIT_CONF"
+say "/etc/rc.local:"
+run "cat /etc/rc.local"
+
+say "Waiting for runlevel 2"
+sleep 2
+assert_status "service.sh" "stopped"
+
+say "Changing to runlevel 3"
+run "initctl runlevel 3"
+sleep 2
+assert_status "service.sh" "running"
+run "initctl"
+oldpid=$(texec initctl |awk '/service.sh/{print $1}')
+
+say "Changing to runlevel 4"
+run "initctl runlevel 4"
+sleep 2
+assert_status "service.sh" "running"
+assert_pidiff "service.sh" "$oldpid"
+
+run "initctl"