test: new test, notify.sh, systemd and s6 readiness notification

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

test/notify.sh

@@ -0,0 +1,79 @@
+#!/bin/sh
+# Verify service readiness notification
+
+set -eu
+#set -x
+
+TEST_DIR=$(dirname "$0")
+
+test_setup()
+{
+	say "Test start $(date)"
+	texec sh -c "mkdir -p /etc/default"
+}
+
+test_teardown()
+{
+	say "Test done $(date)"
+	say "Running test teardown."
+
+	texec rm -f "$FINIT_CONF"
+}
+
+test_one()
+{
+    type=$1
+    service=$2
+
+    num=$(texec sh -c "find /proc/1/fd |wc -l")
+    say "finit: number of open file descriptors before test: $num"
+
+    say "Add $type stanza to $FINIT_CONF"
+    texec sh -c "echo $service > $FINIT_CONF"
+
+    say 'Reload Finit'
+    texec sh -c "initctl reload"
+
+    sleep 1
+    texec sh -c "initctl status serv"
+    assert_status "serv" "running"
+
+    sleep 2
+    texec sh -c "initctl cond dump"
+    assert_cond "service/serv/ready"
+
+    say "Verify 'ready' is set after SIGHUP ..."
+    texec sh -c "initctl reload serv"
+    sleep 2
+    assert_status "serv" "running"
+    assert_cond "service/serv/ready"
+
+    texec sh -c "initctl stop serv"
+    sleep 1
+    assert_status "serv" "stopped"
+    assert_nocond "service/serv/ready"
+
+    # sleep 2
+    # num=$(texec sh -c "find /proc/1/fd |wc -l")
+    # say "finit: number of open file descriptors after test: $num"
+    
+}
+
+# shellcheck source=/dev/null
+. "$TEST_DIR/tenv/lib.sh"
+
+texec sh -c "initctl debug"
+
+test_one "s6"      "service log:stdout notify:s6      serv -np -N %n -- s6 readiness"
+test_one "systemd" "service log:stdout notify:systemd serv -np       -- systemd readiness"
+
+test_one "s6"      "service log:stdout notify:s6      serv -np -N %n -- s6 readiness"
+test_one "systemd" "service log:stdout notify:systemd serv -np       -- systemd readiness"
+
+test_one "s6"      "service log:stdout notify:s6      serv -np -N %n -- s6 readiness"
+test_one "systemd" "service log:stdout notify:systemd serv -np       -- systemd readiness"
+
+test_one "s6"      "service log:stdout notify:s6      serv -np -N %n -- s6 readiness"
+test_one "systemd" "service log:stdout notify:systemd serv -np       -- systemd readiness"
+
+return 0