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# -*- coding: utf-8 -*-
# The MIT License (MIT)
#
# Copyright © 2014 Tim Bielawa <timbielawa@gmail.com>
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""
Test parsing strings into bitmath objects
"""
from . import TestCase
import bitmath
class TestParse(TestCase):
def test_parse_b(self):
"""parse_string works on bit strings"""
self.assertEqual(
bitmath.parse_string("123b"),
bitmath.Bit(123))
def test_parse_B(self):
"""parse_string works on byte strings"""
self.assertEqual(
bitmath.parse_string("321B"),
bitmath.Byte(321))
def test_parse_Gb(self):
"""parse_string works on gigabit strings"""
self.assertEqual(
bitmath.parse_string("456Gb"),
bitmath.Gb(456))
def test_parse_MiB(self):
"""parse_string works on mebibyte strings"""
self.assertEqual(
bitmath.parse_string("654 MiB"),
bitmath.MiB(654))
######################################################################
# NIST 'octet' based units
def test_parse_Mio(self):
"""parse_string works on mebioctet strings"""
self.assertEqual(
bitmath.parse_string("654 Mio"),
bitmath.MiB(654))
def test_parse_Eio(self):
"""parse_string works on exbioctet strings"""
self.assertEqual(
bitmath.parse_string("654 Eio"),
bitmath.EiB(654))
# SI 'octet' based units
def test_parse_Mo(self):
"""parse_string works on megaoctet strings"""
self.assertEqual(
bitmath.parse_string("654 Mo"),
bitmath.MB(654))
def test_parse_Eo(self):
"""parse_string works on exaoctet strings"""
self.assertEqual(
bitmath.parse_string("654 Eo"),
bitmath.EB(654))
######################################################################
def test_parse_bad_float(self):
"""parse_string can identify invalid float values"""
with self.assertRaises(ValueError):
bitmath.parse_string("1.23.45 kb")
def test_parse_bad_unit(self):
"""parse_string can identify invalid prefix units"""
with self.assertRaises(ValueError):
bitmath.parse_string("1.23 GIB")
def test_parse_bad_unit2(self):
"""parse_string can identify other prefix units"""
with self.assertRaises(ValueError):
bitmath.parse_string("1.23 QB")
def test_parse_no_unit(self):
"""parse_string can identify strings without units at all"""
with self.assertRaises(ValueError):
bitmath.parse_string("12345")
def test_parse_string_non_string_input(self):
"""parse_string can identify a non-string input"""
with self.assertRaises(ValueError):
bitmath.parse_string(12345)
def test_parse_string_unicode(self):
"""parse_string can handle a unicode string"""
self.assertEqual(
bitmath.parse_string(u"750 GiB"),
bitmath.GiB(750))
######################################################################
def test_parse_unsafe_bad_input_type(self):
"""parse_string_unsafe can identify invalid input types"""
with self.assertRaises(ValueError):
invalid_input = {'keyvalue': 'store'}
bitmath.parse_string_unsafe(invalid_input)
def test_parse_unsafe_invalid_input(self):
"""parse_string_unsafe explodes when given invalid units"""
invalid_input_str = "kitties!"
with self.assertRaises(ValueError):
bitmath.parse_string_unsafe(invalid_input_str)
with self.assertRaises(ValueError):
bitmath.parse_string_unsafe('100 CiB')
with self.assertRaises(ValueError):
bitmath.parse_string_unsafe('100 J')
def test_parse_unsafe_good_number_input(self):
"""parse_string_unsafe can parse unitless number inputs"""
number_input = 100
string_input = "100"
expected_result = bitmath.Byte(100)
self.assertEqual(
bitmath.parse_string_unsafe(number_input),
expected_result)
self.assertEqual(
bitmath.parse_string_unsafe(string_input),
expected_result)
def test_parse_unsafe_handles_SI_K_unit(self):
"""parse_string_unsafe can parse the upper/lowercase SI 'thousand' (k)"""
thousand_lower = "100k"
thousand_upper = "100K"
expected_result = bitmath.kB(100)
self.assertEqual(
bitmath.parse_string_unsafe(thousand_lower),
expected_result)
self.assertEqual(
bitmath.parse_string_unsafe(thousand_upper),
expected_result)
def test_parse_unsafe_NIST_units(self):
"""parse_string_unsafe can parse abbreviated NIST units (Gi, Ki, ...)"""
nist_input = "100 Gi"
expected_result = bitmath.GiB(100)
self.assertEqual(
bitmath.parse_string_unsafe(nist_input),
expected_result)
def test_parse_unsafe_SI(self):
"""parse_string_unsafe can parse all accepted SI inputs"""
# Begin with the kilo unit because it's the most tricky (SI
# defines the unit as a lower-case 'k')
kilo_inputs = [
'100k',
'100K',
'100kb',
'100KB',
'100kB'
]
expected_kilo_result = bitmath.kB(100)
for ki in kilo_inputs:
_parsed = bitmath.parse_string_unsafe(ki)
self.assertEqual(_parsed, expected_kilo_result)
self.assertIs(type(_parsed), type(expected_kilo_result))
# Now check for other easier to parse prefixes
other_inputs = [
'100g',
'100G',
'100gb',
'100gB',
'100GB'
]
expected_gig_result = bitmath.GB(100)
for gi in other_inputs:
_parsed = bitmath.parse_string_unsafe(gi)
self.assertEqual(_parsed, expected_gig_result)
self.assertIs(type(_parsed), type(expected_gig_result))
def test_parse_unsafe_NIST(self):
"""parse_string_unsafe can parse all accepted NIST inputs"""
# Begin with the kilo unit because it's the most tricky (SI
# defines the unit as a lower-case 'k')
kilo_inputs = [
'100ki',
'100Ki',
'100kib',
'100KiB',
'100kiB'
]
expected_kilo_result = bitmath.KiB(100)
for ki in kilo_inputs:
_parsed = bitmath.parse_string_unsafe(ki)
self.assertEqual(_parsed, expected_kilo_result)
self.assertIs(type(_parsed), type(expected_kilo_result))
# Now check for other easier to parse prefixes
other_inputs = [
'100gi',
'100Gi',
'100gib',
'100giB',
'100GiB'
]
expected_gig_result = bitmath.GiB(100)
for gi in other_inputs:
_parsed = bitmath.parse_string_unsafe(gi)
self.assertEqual(_parsed, expected_gig_result)
self.assertIs(type(_parsed), type(expected_gig_result))
def test_parse_string_unsafe_request_NIST(self):
"""parse_string_unsafe can convert to NIST on request"""
unsafe_input = "100M"
_parsed = bitmath.parse_string_unsafe(unsafe_input, system=bitmath.NIST)
expected = bitmath.MiB(100)
self.assertEqual(_parsed, expected)
self.assertIs(type(_parsed), type(expected))
unsafe_input2 = "100k"
_parsed2 = bitmath.parse_string_unsafe(unsafe_input2, system=bitmath.NIST)
expected2 = bitmath.KiB(100)
self.assertEqual(_parsed2, expected2)
self.assertIs(type(_parsed2), type(expected2))
unsafe_input3 = "100"
_parsed3 = bitmath.parse_string_unsafe(unsafe_input3, system=bitmath.NIST)
expected3 = bitmath.Byte(100)
self.assertEqual(_parsed3, expected3)
self.assertIs(type(_parsed3), type(expected3))
unsafe_input4 = "100kb"
_parsed4 = bitmath.parse_string_unsafe(unsafe_input4, system=bitmath.NIST)
expected4 = bitmath.KiB(100)
self.assertEqual(_parsed4, expected4)
self.assertIs(type(_parsed4), type(expected4))
######################################################################
def test_parse_string_unsafe_github_issue_60(self):
"""parse_string_unsafe can parse the examples reported in issue #60
https://github.com/tbielawa/bitmath/issues/60
"""
issue_input1 = '7.5KB'
_parsed1 = bitmath.parse_string_unsafe(issue_input1)
expected_result1 = bitmath.kB(7.5)
self.assertEqual(
_parsed1,
expected_result1)
issue_input2 = '4.7MB'
_parsed2 = bitmath.parse_string_unsafe(issue_input2)
expected_result2 = bitmath.MB(4.7)
self.assertEqual(
_parsed2,
expected_result2)
issue_input3 = '4.7M'
_parsed3 = bitmath.parse_string_unsafe(issue_input3)
expected_result3 = bitmath.MB(4.7)
self.assertEqual(
_parsed3,
expected_result3)
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