def METHOD_NAME(self):
    pyfunc = usecases.while_count
    cr = compile_isolated(pyfunc, (types.int32, types.int32))
    cfunc = cr.entry_point
    ss = -1, 0, 1, 100, 200
    es = -1, 0, 1, 100, 200
    for args in itertools.product(ss, es):
        self.assertEqual(pyfunc(*args), cfunc(*args), args)