def test_base20(self):
base20 = BaseConverter("0123456789abcdefghij")
self.assertEqual(base20.encode(1234), "31e")
self.assertEqual(base20.decode("31e"), 1234)
self.assertEqual(base20.encode(-1234), "-31e")
self.assertEqual(base20.decode("-31e"), -1234)
def test_base7(self):
base7 = BaseConverter("cjdhel3", sign="g")
self.assertEqual(base7.encode(1234), "hejd")
self.assertEqual(base7.decode("hejd"), 1234)
self.assertEqual(base7.encode(-1234), "ghejd")
self.assertEqual(base7.decode("ghejd"), -1234)
def test_base11(self):
base11 = BaseConverter("0123456789-", sign="$")
self.assertEqual(base11.encode(1234), "-22")
self.assertEqual(base11.decode("-22"), 1234)
self.assertEqual(base11.encode(-1234), "$-22")
self.assertEqual(base11.decode("$-22"), -1234)
