def METHOD_NAME(self):
    results = doit(self, 220, "-z")
    t = re.search(r"DPMI: launch succeeded, int 21h calls: (\d+)", results)
    self.assertIsNotNone(t, "Unable to parse number of int 21h calls")
    num = int(t.group(1))
    self.assertGreater(num, 800, results)