Add another small test.

Makefile.am

@@ -91,3 +91,4 @@ test: rofi
 	./test/run_errormsg_test.sh
 	./test/run_switchdialog_test.sh
 	./test/run_dmenu_test.sh
+	./test/run_run_test.sh

test/run_run_test.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# Create fake X
+Xvfb :203 &
+XPID=$!
+
+# wait till it is up, run rofi with error message
+sleep 1;
+./rofi -rnow -display :203  & 
+RPID=$!
+
+# send enter.
+sleep 5;
+DISPLAY=:203 xdotool key 't' 
+sleep 0.4
+DISPLAY=:203 xdotool key 'r'
+sleep 0.4
+DISPLAY=:203 xdotool key 'u'
+sleep 0.4
+DISPLAY=:203 xdotool key 'e'
+sleep 0.4
+DISPLAY=:203 xdotool key Return
+
+#  Get result, kill xvfb
+wait ${RPID}
+RETV=$?
+kill ${XPID}
+
+sleep 1
+
+exit ${RETV}