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# -*- coding: utf-8 -*-
#
# Picard, the next-generation MusicBrainz tagger
#
# Copyright (C) 2013, 2019-2021 Laurent Monin
# Copyright (C) 2014, 2017 Sophist-UK
# Copyright (C) 2017 Sambhav Kothari
# Copyright (C) 2018 Wieland Hoffmann
# Copyright (C) 2018-2020 Philipp Wolfer
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
import os.path
from test.picardtestcase import PicardTestCase
from picard.util import bytes2human
class Testbytes2human(PicardTestCase):
def test_00(self):
self.run_test()
self.assertEqual(bytes2human.binary(45682), '44.6 KiB')
self.assertEqual(bytes2human.binary(-45682), '-44.6 KiB')
self.assertEqual(bytes2human.binary(-45682, 2), '-44.61 KiB')
self.assertEqual(bytes2human.decimal(45682), '45.7 kB')
self.assertEqual(bytes2human.decimal(45682, 2), '45.68 kB')
self.assertEqual(bytes2human.decimal(9223372036854775807), '9223.4 PB')
self.assertEqual(bytes2human.decimal(9223372036854775807, 3), '9223.372 PB')
self.assertEqual(bytes2human.decimal(123.6), '123 B')
self.assertRaises(ValueError, bytes2human.decimal, 'xxx')
self.assertRaises(ValueError, bytes2human.decimal, '123.6')
self.assertRaises(ValueError, bytes2human.binary, 'yyy')
self.assertRaises(ValueError, bytes2human.binary, '456yyy')
try:
bytes2human.decimal('123')
except Exception as e:
self.fail('Unexpected exception: %s' % e)
def test_calc_unit_raises_value_error(self):
self.assertRaises(ValueError, bytes2human.calc_unit, 1, None)
self.assertRaises(ValueError, bytes2human.calc_unit, 1, 100)
self.assertRaises(ValueError, bytes2human.calc_unit, 1, 999)
self.assertRaises(ValueError, bytes2human.calc_unit, 1, 1023)
self.assertRaises(ValueError, bytes2human.calc_unit, 1, 1025)
self.assertEqual((1.0, 'B'), bytes2human.calc_unit(1, 1024))
self.assertEqual((1.0, 'B'), bytes2human.calc_unit(1, 1000))
def run_test(self, lang='C', create_test_data=False):
"""
Compare data generated with sample files
Setting create_test_data to True will generated sample files
from code execution (developer-only, check carefully)
"""
filename = os.path.join('test', 'data', 'b2h_test_%s.dat' % lang)
testlist = self._create_testlist()
if create_test_data:
self._save_expected_to(filename, testlist)
expected = self._read_expected_from(filename)
self.assertEqual(testlist, expected)
if create_test_data:
# be sure it is disabled
self.fail('!!! UNSET create_test_data mode !!! (%s)' % filename)
@staticmethod
def _create_testlist():
values = [0, 1]
for n in (1000, 1024):
p = 1
for e in range(0, 6):
p *= n
for x in (0.1, 0.5, 0.99, 0.9999, 1, 1.5):
values.append(int(p * x))
list = []
for x in sorted(values):
list.append(";".join([str(x), bytes2human.decimal(x),
bytes2human.binary(x),
bytes2human.short_string(x, 1024, 2)]))
return list
@staticmethod
def _save_expected_to(path, a_list):
with open(path, 'wb') as f:
f.writelines([line + "\n" for line in a_list])
f.close()
@staticmethod
def _read_expected_from(path):
with open(path, 'r') as f:
lines = [line.rstrip("\n") for line in f.readlines()]
f.close()
return lines
def test_calc_unit(self):
self.assertEqual(bytes2human.calc_unit(12456, 1024), (12.1640625, 'KiB'))
self.assertEqual(bytes2human.calc_unit(-12456, 1000), (-12.456, 'kB'))
self.assertRaises(ValueError, bytes2human.calc_unit, 0, 1001)
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