1 files changed, 51 insertions, 0 deletions
diff --git a/tests/shell/helpers/lib.sh b/tests/shell/helpers/lib.sh
new file mode 100755
index 00000000..ce27aac3
--- /dev/null
+++ b/tests/shell/helpers/lib.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# contains utility functions commonly used in tests.
+
+assert_pass()
+{
+	local ret=$?
+	if [ $ret != 0 ]; then
+		echo "FAIL: ${@}"
+		if type -t assert_failout; then
+			assert_failout
+		fi
+		exit 1
+	else
+		echo "PASS: ${@}"
+	fi
+}
+assert_fail()
+{
+	local ret=$?
+	if [ $ret == 0 ]; then
+		echo "FAIL: ${@}"
+		if type -t assert_failout; then
+			assert_failout
+		fi
+		exit 1
+	else
+		echo "PASS: ${@}"
+	fi
+}
+
+wait_local_port_listen()
+{
+	local listener_ns="${1}"
+	local port="${2}"
+	local protocol="${3}"
+	local pattern
+	local i
+
+	pattern=":$(printf "%04X" "${port}") "
+
+	# for tcp protocol additionally check the socket state
+	[ ${protocol} = "tcp" ] && pattern="${pattern}0A"
+	for i in $(seq 10); do
+		if ip netns exec "${listener_ns}" awk '{print $2" "$4}' \
+		   /proc/net/"${protocol}"* | grep -q "${pattern}"; then
+			break
+		fi
+		sleep 0.1
+	done
+}