def test_list_unify1(self):
        """
        Exercise back-propagation of refined list type.
        """
        pyfunc = list_unify_usecase1
        cfunc = jit(nopython=True)(pyfunc)
        for n in [5, 100]:
            res = cfunc(n)
            self.assertPreciseEqual(res, pyfunc(n))

        Exercise back-propagation of refined list type.
        
numba/tests/test_typeinfer.py