# Copyright 2015 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from unpaddedbase64 import encode_base64, decode_base64
import unittest


class TestUnpaddedBase64(unittest.TestCase):

    def test_encode(self):
        self.assertEqual(encode_base64(b''), u'')
        self.assertEqual(encode_base64(b'\x00'), u'AA')
        self.assertEqual(encode_base64(b'\x00\x00'), u'AAA')
        self.assertEqual(encode_base64(b'\x00\x00\x00'), u'AAAA')

    def test_decode(self):
        self.assertEqual(decode_base64(u''), b'')
        self.assertEqual(decode_base64(u'AA'), b'\x00')
        self.assertEqual(decode_base64(u'AAA'), b'\x00\x00')
        self.assertEqual(decode_base64(u'AAAA'), b'\x00\x00\x00')
        with self.assertRaises(Exception):
            decode_base64(u'A')

    def test_encode_urlunsafe_chars(self):
        self.assertEqual(encode_base64(b'\xff\xe6\x9a'), u'/+aa')
        self.assertEqual(encode_base64(b'\xff\xe6\x9a', True), u'_-aa')

    def test_decode_urlunsafe_chars(self):
        self.assertEqual(decode_base64(u'/+aa'), b'\xff\xe6\x9a')
        self.assertEqual(decode_base64(u'_-aa'), b'\xff\xe6\x9a')