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# Copyright (c) 2015 The Johns Hopkins University/Applied Physics Laboratory
# 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.
import testtools
from kmip.core import errors
from kmip.core import primitives
from kmip.core import utils
class TestByteString(testtools.TestCase):
def setUp(self):
super(TestByteString, self).setUp()
self.stream = utils.BytearrayStream()
self.bad_type = errors.ErrorStrings.BAD_EXP_RECV.format(
'primitives.ByteString.{0}', 'type', '{1}', '{2}')
self.bad_value = errors.ErrorStrings.BAD_EXP_RECV.format(
'primitives.ByteString.{0}', 'value', '{1}', '{2}')
self.bad_read = errors.ErrorStrings.BAD_EXP_RECV.format(
'primitives.ByteString.{0}', '', '{1}', '{2}')
self.bad_write = errors.ErrorStrings.BAD_EXP_RECV.format(
'primitives.ByteString.{0}', 'write', '{1}', '{2}')
self.bad_encoding = errors.ErrorStrings.BAD_ENCODING.format(
'primitives.ByteString', '')
self.bad_length = errors.ErrorStrings.BAD_EXP_RECV.format(
'primitives.ByteString', 'length', '{0} bytes', '{1} bytes')
def tearDown(self):
super(TestByteString, self).tearDown()
def test_init(self):
value = b'\x01\x02\x03'
bs = primitives.ByteString(value)
self.assertIsInstance(bs.value, bytes,
self.bad_type.format('value', bytes,
type(bs.value)))
self.assertEqual(value, bs.value,
self.bad_value.format('value', value, bs.value))
def test_init_unset(self):
bs = primitives.ByteString()
self.assertIsInstance(bs.value, bytes,
self.bad_type.format('value', type(None),
type(bs.value)))
self.assertEqual(bytes(), bs.value,
self.bad_value.format('value', None, bs.value))
def test_validate_on_valid(self):
bs = primitives.ByteString()
bs.value = b'\x00'
# Check no exception thrown.
bs.validate()
def test_validate_on_valid_unset(self):
bs = primitives.ByteString()
# Check no exception thrown.
bs.validate()
def test_validate_on_invalid_type(self):
bs = primitives.ByteString()
bs.value = 0
self.assertRaises(TypeError, bs.validate)
def test_read_value(self):
encoding = b'\x01\x02\x03\x00\x00\x00\x00\x00'
self.stream = utils.BytearrayStream(encoding)
bs = primitives.ByteString()
bs.length = 0x03
bs.read_value(self.stream)
expected = b'\x01\x02\x03'
self.assertEqual(expected, bs.value,
self.bad_read.format('value', expected, bs.value))
def test_read_value_no_padding(self):
encoding = b'\x01\x02\x03\x04\x05\x06\x07\x08'
self.stream = utils.BytearrayStream(encoding)
bs = primitives.ByteString()
bs.length = 0x08
bs.read_value(self.stream)
expected = b'\x01\x02\x03\x04\x05\x06\x07\x08'
self.assertEqual(expected, bs.value,
self.bad_read.format('value', expected, bs.value))
def test_read_value_max_padding(self):
encoding = b'\x01\x00\x00\x00\x00\x00\x00\x00'
self.stream = utils.BytearrayStream(encoding)
bs = primitives.ByteString()
bs.length = 0x01
bs.read_value(self.stream)
expected = b'\x01'
self.assertEqual(expected, bs.value,
self.bad_read.format('value', expected, bs.value))
def test_read_value_zero(self):
encoding = b'\x00\x00\x00\x00\x00\x00\x00\x00'
self.stream = utils.BytearrayStream(encoding)
bs = primitives.ByteString()
bs.length = 0x01
bs.read_value(self.stream)
expected = b'\x00'
self.assertEqual(expected, bs.value,
self.bad_read.format('value', expected, bs.value))
def test_read(self):
encoding = (
b'\x42\x00\x00\x08\x00\x00\x00\x03\x01\x02\x03\x00\x00\x00\x00'
b'\x00')
self.stream = utils.BytearrayStream(encoding)
bs = primitives.ByteString()
bs.read(self.stream)
expected = b'\x01\x02\x03'
self.assertEqual(expected, bs.value,
self.bad_read.format('value', expected, bs.value))
def test_read_on_invalid_padding(self):
encoding = (
b'\x42\x00\x00\x08\x00\x00\x00\x03\x01\x02\x03\xff\xff\xff\xff'
b'\xff')
self.stream = utils.BytearrayStream(encoding)
bs = primitives.ByteString()
self.assertRaises(errors.ReadValueError, bs.read, self.stream)
def test_write_value(self):
encoding = b'\x01\x02\x03\x00\x00\x00\x00\x00'
self.stream = utils.BytearrayStream()
value = b'\x01\x02\x03'
bs = primitives.ByteString(value)
bs.write_value(self.stream)
result = self.stream.read()
len_exp = len(encoding)
len_rcv = len(result)
self.assertEqual(len_exp, len_rcv,
self.bad_length.format(len_exp, len_rcv))
self.assertEqual(encoding, result, self.bad_encoding)
def test_write_value_no_padding(self):
encoding = b'\x01\x02\x03\x04\x05\x06\x07\x08'
self.stream = utils.BytearrayStream()
value = b'\x01\x02\x03\x04\x05\x06\x07\x08'
bs = primitives.ByteString(value)
bs.write_value(self.stream)
result = self.stream.read()
len_exp = len(encoding)
len_rcv = len(result)
self.assertEqual(len_exp, len_rcv,
self.bad_length.format(len_exp, len_rcv))
self.assertEqual(encoding, result, self.bad_encoding)
def test_write_value_max_padding(self):
encoding = b'\x01\x00\x00\x00\x00\x00\x00\x00'
self.stream = utils.BytearrayStream()
value = b'\x01'
bs = primitives.ByteString(value)
bs.write_value(self.stream)
result = self.stream.read()
len_exp = len(encoding)
len_rcv = len(result)
self.assertEqual(len_exp, len_rcv,
self.bad_length.format(len_exp, len_rcv))
self.assertEqual(encoding, result, self.bad_encoding)
def test_write_value_zero(self):
encoding = b'\x00\x00\x00\x00\x00\x00\x00\x00'
self.stream = utils.BytearrayStream()
value = b'\x00'
bs = primitives.ByteString(value)
bs.write_value(self.stream)
result = self.stream.read()
len_exp = len(encoding)
len_rcv = len(result)
self.assertEqual(len_exp, len_rcv,
self.bad_length.format(len_exp, len_rcv))
self.assertEqual(encoding, result, self.bad_encoding)
def test_write(self):
encoding = (
b'\x42\x00\x00\x08\x00\x00\x00\x03\x01\x02\x03\x00\x00\x00\x00'
b'\x00')
self.stream = utils.BytearrayStream()
value = b'\x01\x02\x03'
bs = primitives.ByteString(value)
bs.write(self.stream)
result = self.stream.read()
len_exp = len(encoding)
len_rcv = len(result)
self.assertEqual(len_exp, len_rcv,
self.bad_length.format(len_exp, len_rcv))
self.assertEqual(encoding, result, self.bad_encoding)
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