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# -*- coding: utf-8 -*-
# Copyright 2011 OpenStack Foundation.
# 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 math
import mock
from oslotest import base as test_base
import six
import testscenarios
from oslo.utils.openstack.common import units
from oslo.utils import strutils
load_tests = testscenarios.load_tests_apply_scenarios
class StrUtilsTest(test_base.BaseTestCase):
def test_bool_bool_from_string(self):
self.assertTrue(strutils.bool_from_string(True))
self.assertFalse(strutils.bool_from_string(False))
def test_bool_bool_from_string_default(self):
self.assertTrue(strutils.bool_from_string('', default=True))
self.assertFalse(strutils.bool_from_string('wibble', default=False))
def _test_bool_from_string(self, c):
self.assertTrue(strutils.bool_from_string(c('true')))
self.assertTrue(strutils.bool_from_string(c('TRUE')))
self.assertTrue(strutils.bool_from_string(c('on')))
self.assertTrue(strutils.bool_from_string(c('On')))
self.assertTrue(strutils.bool_from_string(c('yes')))
self.assertTrue(strutils.bool_from_string(c('YES')))
self.assertTrue(strutils.bool_from_string(c('yEs')))
self.assertTrue(strutils.bool_from_string(c('1')))
self.assertTrue(strutils.bool_from_string(c('T')))
self.assertTrue(strutils.bool_from_string(c('t')))
self.assertTrue(strutils.bool_from_string(c('Y')))
self.assertTrue(strutils.bool_from_string(c('y')))
self.assertFalse(strutils.bool_from_string(c('false')))
self.assertFalse(strutils.bool_from_string(c('FALSE')))
self.assertFalse(strutils.bool_from_string(c('off')))
self.assertFalse(strutils.bool_from_string(c('OFF')))
self.assertFalse(strutils.bool_from_string(c('no')))
self.assertFalse(strutils.bool_from_string(c('0')))
self.assertFalse(strutils.bool_from_string(c('42')))
self.assertFalse(strutils.bool_from_string(c(
'This should not be True')))
self.assertFalse(strutils.bool_from_string(c('F')))
self.assertFalse(strutils.bool_from_string(c('f')))
self.assertFalse(strutils.bool_from_string(c('N')))
self.assertFalse(strutils.bool_from_string(c('n')))
# Whitespace should be stripped
self.assertTrue(strutils.bool_from_string(c(' 1 ')))
self.assertTrue(strutils.bool_from_string(c(' true ')))
self.assertFalse(strutils.bool_from_string(c(' 0 ')))
self.assertFalse(strutils.bool_from_string(c(' false ')))
def test_bool_from_string(self):
self._test_bool_from_string(lambda s: s)
def test_unicode_bool_from_string(self):
self._test_bool_from_string(six.text_type)
self.assertFalse(strutils.bool_from_string(u'使用', strict=False))
exc = self.assertRaises(ValueError, strutils.bool_from_string,
u'使用', strict=True)
expected_msg = (u"Unrecognized value '使用', acceptable values are:"
u" '0', '1', 'f', 'false', 'n', 'no', 'off', 'on',"
u" 't', 'true', 'y', 'yes'")
self.assertEqual(expected_msg, six.text_type(exc))
def test_other_bool_from_string(self):
self.assertFalse(strutils.bool_from_string(None))
self.assertFalse(strutils.bool_from_string(mock.Mock()))
def test_int_bool_from_string(self):
self.assertTrue(strutils.bool_from_string(1))
self.assertFalse(strutils.bool_from_string(-1))
self.assertFalse(strutils.bool_from_string(0))
self.assertFalse(strutils.bool_from_string(2))
def test_strict_bool_from_string(self):
# None isn't allowed in strict mode
exc = self.assertRaises(ValueError, strutils.bool_from_string, None,
strict=True)
expected_msg = ("Unrecognized value 'None', acceptable values are:"
" '0', '1', 'f', 'false', 'n', 'no', 'off', 'on',"
" 't', 'true', 'y', 'yes'")
self.assertEqual(expected_msg, str(exc))
# Unrecognized strings aren't allowed
self.assertFalse(strutils.bool_from_string('Other', strict=False))
exc = self.assertRaises(ValueError, strutils.bool_from_string, 'Other',
strict=True)
expected_msg = ("Unrecognized value 'Other', acceptable values are:"
" '0', '1', 'f', 'false', 'n', 'no', 'off', 'on',"
" 't', 'true', 'y', 'yes'")
self.assertEqual(expected_msg, str(exc))
# Unrecognized numbers aren't allowed
exc = self.assertRaises(ValueError, strutils.bool_from_string, 2,
strict=True)
expected_msg = ("Unrecognized value '2', acceptable values are:"
" '0', '1', 'f', 'false', 'n', 'no', 'off', 'on',"
" 't', 'true', 'y', 'yes'")
self.assertEqual(expected_msg, str(exc))
# False-like values are allowed
self.assertFalse(strutils.bool_from_string('f', strict=True))
self.assertFalse(strutils.bool_from_string('false', strict=True))
self.assertFalse(strutils.bool_from_string('off', strict=True))
self.assertFalse(strutils.bool_from_string('n', strict=True))
self.assertFalse(strutils.bool_from_string('no', strict=True))
self.assertFalse(strutils.bool_from_string('0', strict=True))
self.assertTrue(strutils.bool_from_string('1', strict=True))
# Avoid font-similarity issues (one looks like lowercase-el, zero like
# oh, etc...)
for char in ('O', 'o', 'L', 'l', 'I', 'i'):
self.assertRaises(ValueError, strutils.bool_from_string, char,
strict=True)
def test_int_from_bool_as_string(self):
self.assertEqual(1, strutils.int_from_bool_as_string(True))
self.assertEqual(0, strutils.int_from_bool_as_string(False))
def test_safe_decode(self):
safe_decode = strutils.safe_decode
self.assertRaises(TypeError, safe_decode, True)
self.assertEqual(six.u('ni\xf1o'), safe_decode(six.b("ni\xc3\xb1o"),
incoming="utf-8"))
if six.PY2:
# In Python 3, bytes.decode() doesn't support anymore
# bytes => bytes encodings like base64
self.assertEqual(six.u("test"), safe_decode("dGVzdA==",
incoming='base64'))
self.assertEqual(six.u("strange"), safe_decode(six.b('\x80strange'),
errors='ignore'))
self.assertEqual(six.u('\xc0'), safe_decode(six.b('\xc0'),
incoming='iso-8859-1'))
# Forcing incoming to ascii so it falls back to utf-8
self.assertEqual(six.u('ni\xf1o'), safe_decode(six.b('ni\xc3\xb1o'),
incoming='ascii'))
self.assertEqual(six.u('foo'), safe_decode(b'foo'))
def test_safe_encode(self):
safe_encode = strutils.safe_encode
self.assertRaises(TypeError, safe_encode, True)
self.assertEqual(six.b("ni\xc3\xb1o"), safe_encode(six.u('ni\xf1o'),
encoding="utf-8"))
if six.PY2:
# In Python 3, str.encode() doesn't support anymore
# text => text encodings like base64
self.assertEqual(six.b("dGVzdA==\n"),
safe_encode("test", encoding='base64'))
self.assertEqual(six.b('ni\xf1o'), safe_encode(six.b("ni\xc3\xb1o"),
encoding="iso-8859-1",
incoming="utf-8"))
# Forcing incoming to ascii so it falls back to utf-8
self.assertEqual(six.b('ni\xc3\xb1o'),
safe_encode(six.b('ni\xc3\xb1o'), incoming='ascii'))
self.assertEqual(six.b('foo'), safe_encode(six.u('foo')))
def test_slugify(self):
to_slug = strutils.to_slug
self.assertRaises(TypeError, to_slug, True)
self.assertEqual(six.u("hello"), to_slug("hello"))
self.assertEqual(six.u("two-words"), to_slug("Two Words"))
self.assertEqual(six.u("ma-any-spa-ce-es"),
to_slug("Ma-any\t spa--ce- es"))
self.assertEqual(six.u("excamation"), to_slug("exc!amation!"))
self.assertEqual(six.u("ampserand"), to_slug("&ser$and"))
self.assertEqual(six.u("ju5tnum8er"), to_slug("ju5tnum8er"))
self.assertEqual(six.u("strip-"), to_slug(" strip - "))
self.assertEqual(six.u("perche"), to_slug(six.b("perch\xc3\xa9")))
self.assertEqual(six.u("strange"),
to_slug("\x80strange", errors="ignore"))
class StringToBytesTest(test_base.BaseTestCase):
_unit_system = [
('si', dict(unit_system='SI')),
('iec', dict(unit_system='IEC')),
('invalid_unit_system', dict(unit_system='KKK', assert_error=True)),
]
_sign = [
('no_sign', dict(sign='')),
('positive', dict(sign='+')),
('negative', dict(sign='-')),
('invalid_sign', dict(sign='~', assert_error=True)),
]
_magnitude = [
('integer', dict(magnitude='79')),
('decimal', dict(magnitude='7.9')),
('decimal_point_start', dict(magnitude='.9')),
('decimal_point_end', dict(magnitude='79.', assert_error=True)),
('invalid_literal', dict(magnitude='7.9.9', assert_error=True)),
('garbage_value', dict(magnitude='asdf', assert_error=True)),
]
_unit_prefix = [
('no_unit_prefix', dict(unit_prefix='')),
('k', dict(unit_prefix='k')),
('K', dict(unit_prefix='K')),
('M', dict(unit_prefix='M')),
('G', dict(unit_prefix='G')),
('T', dict(unit_prefix='T')),
('Ki', dict(unit_prefix='Ki')),
('Mi', dict(unit_prefix='Mi')),
('Gi', dict(unit_prefix='Gi')),
('Ti', dict(unit_prefix='Ti')),
('invalid_unit_prefix', dict(unit_prefix='B', assert_error=True)),
]
_unit_suffix = [
('b', dict(unit_suffix='b')),
('bit', dict(unit_suffix='bit')),
('B', dict(unit_suffix='B')),
('invalid_unit_suffix', dict(unit_suffix='Kg', assert_error=True)),
]
_return_int = [
('return_dec', dict(return_int=False)),
('return_int', dict(return_int=True)),
]
@classmethod
def generate_scenarios(cls):
cls.scenarios = testscenarios.multiply_scenarios(cls._unit_system,
cls._sign,
cls._magnitude,
cls._unit_prefix,
cls._unit_suffix,
cls._return_int)
def test_string_to_bytes(self):
def _get_quantity(sign, magnitude, unit_suffix):
res = float('%s%s' % (sign, magnitude))
if unit_suffix in ['b', 'bit']:
res /= 8
return res
def _get_constant(unit_prefix, unit_system):
if not unit_prefix:
return 1
elif unit_system == 'SI':
res = getattr(units, unit_prefix)
elif unit_system == 'IEC':
if unit_prefix.endswith('i'):
res = getattr(units, unit_prefix)
else:
res = getattr(units, '%si' % unit_prefix)
return res
text = ''.join([self.sign, self.magnitude, self.unit_prefix,
self.unit_suffix])
err_si = self.unit_system == 'SI' and (self.unit_prefix == 'K' or
self.unit_prefix.endswith('i'))
err_iec = self.unit_system == 'IEC' and self.unit_prefix == 'k'
if getattr(self, 'assert_error', False) or err_si or err_iec:
self.assertRaises(ValueError, strutils.string_to_bytes,
text, unit_system=self.unit_system,
return_int=self.return_int)
return
quantity = _get_quantity(self.sign, self.magnitude, self.unit_suffix)
constant = _get_constant(self.unit_prefix, self.unit_system)
expected = quantity * constant
actual = strutils.string_to_bytes(text, unit_system=self.unit_system,
return_int=self.return_int)
if self.return_int:
self.assertEqual(actual, int(math.ceil(expected)))
else:
self.assertAlmostEqual(actual, expected)
StringToBytesTest.generate_scenarios()
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