# Copyright 2015 Google Inc. All rights reserved.
#
# 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.
"""Unit tests for oauth2client._helpers."""

import unittest

from oauth2client._helpers import _json_encode
from oauth2client._helpers import _parse_pem_key
from oauth2client._helpers import _urlsafe_b64decode
from oauth2client._helpers import _urlsafe_b64encode


class Test__parse_pem_key(unittest.TestCase):

  def test_valid_input(self):
    test_string = b'1234-----BEGIN FOO BAR BAZ'
    result = _parse_pem_key(test_string)
    self.assertEqual(result, test_string[4:])

  def test_bad_input(self):
    test_string = b'DOES NOT HAVE DASHES'
    result = _parse_pem_key(test_string)
    self.assertEqual(result, None)


class Test__json_encode(unittest.TestCase):

  def test_dictionary_input(self):
    # Use only a single key since dictionary hash order
    # is non-deterministic.
    data = {u'foo': 10}
    result = _json_encode(data)
    self.assertEqual(result, """{"foo":10}""")

  def test_list_input(self):
    data = [42, 1337]
    result = _json_encode(data)
    self.assertEqual(result, """[42,1337]""")


class Test__urlsafe_b64encode(unittest.TestCase):

  def test_valid_input_bytes(self):
    test_string = b'deadbeef'
    result = _urlsafe_b64encode(test_string)
    self.assertEqual(result, u'ZGVhZGJlZWY')

  def test_valid_input_unicode(self):
    test_string = u'deadbeef'
    result = _urlsafe_b64encode(test_string)
    self.assertEqual(result, u'ZGVhZGJlZWY')


class Test__urlsafe_b64decode(unittest.TestCase):

  def test_valid_input_bytes(self):
    test_string = b'ZGVhZGJlZWY'
    result = _urlsafe_b64decode(test_string)
    self.assertEqual(result, b'deadbeef')

  def test_valid_input_unicode(self):
    test_string = b'ZGVhZGJlZWY'
    result = _urlsafe_b64decode(test_string)
    self.assertEqual(result, b'deadbeef')

  def test_bad_input(self):
    import binascii
    bad_string = b'+'
    self.assertRaises((TypeError, binascii.Error),
                      _urlsafe_b64decode, bad_string)