--- /dev/null
+#include <syscall.h>
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void)
+{
+ int handle;
+ char buffer[16];
+
+ CHECK ((handle = open ("rox-simple")) > 1, "open \"rox-simple\"");
+ CHECK (read (handle, buffer, sizeof buffer) == (int) sizeof buffer,
+ "read \"rox-simple\"");
+ CHECK (write (handle, buffer, sizeof buffer) == 0,
+ "try to write \"rox-simple\"");
+}