def test_give_bb_should_be_bb(self):
w = "bb"
res = big.solve(w)
self.assertEqual(res, "bb")
def test_give_xsezxuqpj_should_be_xsjepquxz(self):
w = "xsezxuqpj"
res = big.solve(w)
self.assertEqual(res, "xsjepquxz")
def test_give_hefg_should_be_hegf(self):
w = "hefg"
res = big.solve(w)
self.assertEqual(res, "hegf")
def test_give_zwrjvf_should_be_zwrvfj(self):
w = "zwrjvf"
res = big.solve(w)
self.assertEqual(res, "zwrvfj")
def test_give_ab_should_be_ba(self):
w = "ab"
res = big.solve(w)
self.assertEqual(res, "ba")