test: add crashing.sh, verify oncrash:script support

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

test/crashing.sh

@@ -0,0 +1,69 @@
+#!/bin/sh
+# Verifies that Finit calls post:script for crashing services
+
+set -eu
+
+TEST_DIR=$(dirname "$0")
+
+test_setup()
+{
+	say "Test start $(date)"
+}
+
+test_teardown()
+{
+	say "Test done $(date)"
+	say "Running test teardown."
+
+	texec rm -f "$FINIT_CONF" "/tmp/post"
+}
+
+crashit()
+{
+	nm=$1
+
+	say 'Simulate service crash (kill -9 ..)'
+	i=0
+	laps=100
+	while [ $i -lt $laps ]; do
+		i=$((i + 1))
+		say "Lap $i/$laps, killing service $nm ..." # we have this, no sleep needed
+		if ! texec sh -c "slay $nm"; then
+			break;
+		fi
+	done
+}
+
+test_one()
+{
+	type=$1
+	shift
+	nm=$1
+	shift
+	args=$*
+
+	say "Add service stanza in $FINIT_CONF"
+	texec sh -c "echo service log:stderr oncrash:script post:/bin/post.sh $nm $args > $FINIT_CONF"
+
+	say 'Reload Finit'
+	texec sh -c "initctl reload"
+
+	if [ "$type" = "sig" ]; then
+		retry "assert_num_children 1 $nm"
+		texec sh -c "initctl status $nm"
+		crashit "$nm"
+	fi
+
+	retry "assert_status $nm crashed" 500
+	texec cat /tmp/post
+	assert_file_contains "/tmp/post" "POST"
+	texec rm -f "/tmp/post"
+}
+
+# shellcheck source=/dev/null
+. "$TEST_DIR/tenv/lib.sh"
+
+#texec sh -c "initctl debug"
+
+test_one sig service.sh "       -- Test crashing service.sh"
+test_one app serv       "-np -c -- Test crashing serv"