--- /dev/null
+#!/bin/bash
+set -ex
+set -o pipefail
+
+mkdir -p /run/udev/rules.d/
+
+cat > /run/udev/rules.d/50-testsuite.rules <<EOF
+SUBSYSTEM=="mem", KERNEL=="null", OPTIONS="log_level=debug"
+ACTION=="add", SUBSYSTEM=="mem", KERNEL=="null", IMPORT{program}="/bin/echo -e HOGE=aa\\\\x20\\\\x20\\\\x20bb\nFOO=\\\\x20aaa\\\\x20\n\n\n"
+EOF
+
+udevadm control --reload
+udevadm trigger -c add /dev/null
+
+while : ; do
+ test -f /run/udev/data/c1:3 &&
+ udevadm info /dev/null | grep -q 'E: HOGE=aa\\x20\\x20\\x20bb' &&
+ udevadm info /dev/null | grep -q 'E: FOO=\\x20aaa\\x20' &&
+ break
+
+ sleep .5
+done
+
+exit 0