tools/telemetry/third_party/gsutilz/third_party/crcmod/python3/crcmod/test.py - Issue 1493973002: Remove telemetry/third_party/gsutilz

Unified Diff: tools/telemetry/third_party/gsutilz/third_party/crcmod/python3/crcmod/test.py

Issue 1493973002: Remove telemetry/third_party/gsutilz (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@gsutil_changes

Patch Set: rebase Created 5 years ago

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Index: tools/telemetry/third_party/gsutilz/third_party/crcmod/python3/crcmod/test.py

diff --git a/tools/telemetry/third_party/gsutilz/third_party/crcmod/python3/crcmod/test.py b/tools/telemetry/third_party/gsutilz/third_party/crcmod/python3/crcmod/test.py

deleted file mode 100644

index 0190bb7e2e094363cb6d0122d8222a519b0dee0c..0000000000000000000000000000000000000000

--- a/tools/telemetry/third_party/gsutilz/third_party/crcmod/python3/crcmod/test.py

+++ /dev/null

@@ -1,540 +0,0 @@

-#-----------------------------------------------------------------------------

-# 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.

-#-----------------------------------------------------------------------------

-'''Unit tests for crcmod functionality'''

-import unittest

-from array import array

-import binascii

-from .crcmod import mkCrcFun, Crc

-from .crcmod import _usingExtension

-from .predefined import PredefinedCrc

-from .predefined import mkPredefinedCrcFun

-from .predefined import _crc_definitions as _predefined_crc_definitions

-#-----------------------------------------------------------------------------

-# This polynomial was chosen because it is the product of two irreducible

-# polynomials.

-# g8 = (x^7+x+1)*(x+1)

-g8 = 0x185

-#-----------------------------------------------------------------------------

-# The following reproduces all of the entries in the Numerical Recipes table.

-# This is the standard CCITT polynomial.

-g16 = 0x11021

-#-----------------------------------------------------------------------------

-g24 = 0x15D6DCB

-#-----------------------------------------------------------------------------

-# This is the standard AUTODIN-II polynomial which appears to be used in a

-# wide variety of standards and applications.

-g32 = 0x104C11DB7

-#-----------------------------------------------------------------------------

-# I was able to locate a couple of 64-bit polynomials on the web. To make it

-# easier to input the representation, define a function that builds a

-# polynomial from a list of the bits that need to be turned on.

-def polyFromBits(bits):

- p = 0

- for n in bits:

- p = p | (1 << n)

- return p

-# The following is from the paper "An Improved 64-bit Cyclic Redundancy Check

-# for Protein Sequences" by David T. Jones

-g64a = polyFromBits([64, 63, 61, 59, 58, 56, 55, 52, 49, 48, 47, 46, 44, 41,

- 37, 36, 34, 32, 31, 28, 26, 23, 22, 19, 16, 13, 12, 10, 9, 6, 4,

- 3, 0])

-# The following is from Standard ECMA-182 "Data Interchange on 12,7 mm 48-Track

-# Magnetic Tape Cartridges -DLT1 Format-", December 1992.

-g64b = polyFromBits([64, 62, 57, 55, 54, 53, 52, 47, 46, 45, 40, 39, 38, 37,

- 35, 33, 32, 31, 29, 27, 24, 23, 22, 21, 19, 17, 13, 12, 10, 9, 7,

- 4, 1, 0])

-#-----------------------------------------------------------------------------

-# This class is used to check the CRC calculations against a direct

-# implementation using polynomial division.

-class poly:

- '''Class implementing polynomials over the field of integers mod 2'''

- def __init__(self,p):

- p = int(p)

- if p < 0: raise ValueError('invalid polynomial')

- self.p = p

- def __int__(self):

- return self.p

- def __eq__(self,other):

- return self.p == other.p

- def __ne__(self,other):

- return self.p != other.p

- # To allow sorting of polynomials, use their long integer form for

- # comparison

- def __cmp__(self,other):

- return cmp(self.p, other.p)

- def __bool__(self):

- return self.p != 0

- def __neg__(self):

- return self # These polynomials are their own inverse under addition

- def __invert__(self):

- n = max(self.deg() + 1, 1)

- x = (1 << n) - 1

- return poly(self.p ^ x)

- def __add__(self,other):

- return poly(self.p ^ other.p)

- def __sub__(self,other):

- return poly(self.p ^ other.p)

- def __mul__(self,other):

- a = self.p

- b = other.p

- if a == 0 or b == 0: return poly(0)

- x = 0

- while b:

- if b&1:

- x = x ^ a

- a = a<<1

- b = b>>1

- return poly(x)

- def __divmod__(self,other):

- u = self.p

- m = self.deg()

- v = other.p

- n = other.deg()

- if v == 0: raise ZeroDivisionError('polynomial division by zero')

- if n == 0: return (self,poly(0))

- if m < n: return (poly(0),self)

- k = m-n

- a = 1 << m

- v = v << k

- q = 0

- while k > 0:

- if a & u:

- u = u ^ v

- q = q | 1

- q = q << 1

- a = a >> 1

- v = v >> 1

- k -= 1

- if a & u:

- u = u ^ v

- q = q | 1

- return (poly(q),poly(u))

- def __div__(self,other):

- return self.__divmod__(other)[0]

- def __mod__(self,other):

- return self.__divmod__(other)[1]

- def __repr__(self):

- return 'poly(0x%XL)' % self.p

- def __str__(self):

- p = self.p

- if p == 0: return '0'

- lst = { 0:[], 1:['1'], 2:['x'], 3:['1','x'] }[p&3]

- p = p>>2

- n = 2

- while p:

- if p&1: lst.append('x^%d' % n)

- p = p>>1

- n += 1

- lst.reverse()

- return '+'.join(lst)

- def deg(self):

- '''return the degree of the polynomial'''

- a = self.p

- if a == 0: return -1

- n = 0

- while a >= 0x10000:

- n += 16

- a = a >> 16

- a = int(a)

- while a > 1:

- n += 1

- a = a >> 1

- return n

-#-----------------------------------------------------------------------------

-# The following functions compute the CRC using direct polynomial division.

-# These functions are checked against the result of the table driven

-# algorithms.

-g8p = poly(g8)

-x8p = poly(1<<8)

-def crc8p(d):

- p = 0

- for i in d:

- p = p*256 + i

- p = poly(p)

- return int(p*x8p%g8p)

-g16p = poly(g16)

-x16p = poly(1<<16)

-def crc16p(d):

- p = 0

- for i in d:

- p = p*256 + i

- p = poly(p)

- return int(p*x16p%g16p)

-g24p = poly(g24)

-x24p = poly(1<<24)

-def crc24p(d):

- p = 0

- for i in d:

- p = p*256 + i

- p = poly(p)

- return int(p*x24p%g24p)

-g32p = poly(g32)

-x32p = poly(1<<32)

-def crc32p(d):

- p = 0

- for i in d:

- p = p*256 + i

- p = poly(p)

- return int(p*x32p%g32p)

-g64ap = poly(g64a)

-x64p = poly(1<<64)

-def crc64ap(d):

- p = 0

- for i in d:

- p = p*256 + i

- p = poly(p)

- return int(p*x64p%g64ap)

-g64bp = poly(g64b)

-def crc64bp(d):

- p = 0

- for i in d:

- p = p*256 + i

- p = poly(p)

- return int(p*x64p%g64bp)

-class KnownAnswerTests(unittest.TestCase):

- test_messages = [

- b'T',

- b'CatMouse987654321',

- ]

- known_answers = [

- [ (g8,0,0), (0xFE, 0x9D) ],

- [ (g8,-1,1), (0x4F, 0x9B) ],

- [ (g8,0,1), (0xFE, 0x62) ],

- [ (g16,0,0), (0x1A71, 0xE556) ],

- [ (g16,-1,1), (0x1B26, 0xF56E) ],

- [ (g16,0,1), (0x14A1, 0xC28D) ],

- [ (g24,0,0), (0xBCC49D, 0xC4B507) ],

- [ (g24,-1,1), (0x59BD0E, 0x0AAA37) ],

- [ (g24,0,1), (0xD52B0F, 0x1523AB) ],

- [ (g32,0,0), (0x6B93DDDB, 0x12DCA0F4) ],

- [ (g32,0xFFFFFFFF,1), (0x41FB859F, 0xF7B400A7) ],

- [ (g32,0,1), (0x6C0695ED, 0xC1A40EE5) ],

- [ (g32,0,1,0xFFFFFFFF), (0xBE047A60, 0x084BFF58) ],

- ]

- def test_known_answers(self):

- for crcfun_params, v in self.known_answers:

- crcfun = mkCrcFun(*crcfun_params)

- self.assertEqual(crcfun(b'',0), 0, "Wrong answer for CRC parameters %s, input ''" % (crcfun_params,))

- for i, msg in enumerate(self.test_messages):

- self.assertEqual(crcfun(msg), v[i], "Wrong answer for CRC parameters %s, input '%s'" % (crcfun_params,msg))

- self.assertEqual(crcfun(msg[4:], crcfun(msg[:4])), v[i], "Wrong answer for CRC parameters %s, input '%s'" % (crcfun_params,msg))

- self.assertEqual(crcfun(msg[-1:], crcfun(msg[:-1])), v[i], "Wrong answer for CRC parameters %s, input '%s'" % (crcfun_params,msg))

-class CompareReferenceCrcTest(unittest.TestCase):

- test_messages = [

- b'',

- b'T',

- b'123456789',

- b'CatMouse987654321',

- ]

- test_poly_crcs = [

- [ (g8,0,0), crc8p ],

- [ (g16,0,0), crc16p ],

- [ (g24,0,0), crc24p ],

- [ (g32,0,0), crc32p ],

- [ (g64a,0,0), crc64ap ],

- [ (g64b,0,0), crc64bp ],

- ]

- @staticmethod

- def reference_crc32(d, crc=0):

- """This function modifies the return value of binascii.crc32

- to be an unsigned 32-bit value. I.e. in the range 0 to 2**32-1."""

- # Work around the future warning on constants.

- if crc > 0x7FFFFFFF:

- x = int(crc & 0x7FFFFFFF)

- crc = x | -2147483648

- x = binascii.crc32(d,crc)

- return int(x) & 0xFFFFFFFF

- def test_compare_crc32(self):

- """The binascii module has a 32-bit CRC function that is used in a wide range

- of applications including the checksum used in the ZIP file format.

- This test compares the CRC-32 implementation of this crcmod module to

- that of binascii.crc32."""

- # The following function should produce the same result as

- # self.reference_crc32 which is derived from binascii.crc32.

- crc32 = mkCrcFun(g32,0,1,0xFFFFFFFF)

- for msg in self.test_messages:

- self.assertEqual(crc32(msg), self.reference_crc32(msg))

- def test_compare_poly(self):

- """Compare various CRCs of this crcmod module to a pure

- polynomial-based implementation."""

- for crcfun_params, crc_poly_fun in self.test_poly_crcs:

- # The following function should produce the same result as

- # the associated polynomial CRC function.

- crcfun = mkCrcFun(*crcfun_params)

- for msg in self.test_messages:

- self.assertEqual(crcfun(msg), crc_poly_fun(msg))

-class CrcClassTest(unittest.TestCase):

- """Verify the Crc class"""

- msg = b'CatMouse987654321'

- def test_simple_crc32_class(self):

- """Verify the CRC class when not using xorOut"""

- crc = Crc(g32)

- str_rep = \

-'''poly = 0x104C11DB7

-reverse = True

-initCrc = 0xFFFFFFFF

-xorOut = 0x00000000

-crcValue = 0xFFFFFFFF'''

- self.assertEqual(str(crc), str_rep)

- self.assertEqual(crc.digest(), b'\xff\xff\xff\xff')

- self.assertEqual(crc.hexdigest(), 'FFFFFFFF')

- crc.update(self.msg)

- self.assertEqual(crc.crcValue, 0xF7B400A7)

- self.assertEqual(crc.digest(), b'\xf7\xb4\x00\xa7')

- self.assertEqual(crc.hexdigest(), 'F7B400A7')

- # Verify the .copy() method

- x = crc.copy()

- self.assertTrue(x is not crc)

- str_rep = \

-'''poly = 0x104C11DB7

-reverse = True

-initCrc = 0xFFFFFFFF

-xorOut = 0x00000000

-crcValue = 0xF7B400A7'''

- self.assertEqual(str(crc), str_rep)

- self.assertEqual(str(x), str_rep)

- def test_full_crc32_class(self):

- """Verify the CRC class when using xorOut"""

- crc = Crc(g32, initCrc=0, xorOut= ~0)

- str_rep = \

-'''poly = 0x104C11DB7

-reverse = True

-initCrc = 0x00000000

-xorOut = 0xFFFFFFFF

-crcValue = 0x00000000'''

- self.assertEqual(str(crc), str_rep)

- self.assertEqual(crc.digest(), b'\x00\x00\x00\x00')

- self.assertEqual(crc.hexdigest(), '00000000')

- crc.update(self.msg)

- self.assertEqual(crc.crcValue, 0x84BFF58)

- self.assertEqual(crc.digest(), b'\x08\x4b\xff\x58')

- self.assertEqual(crc.hexdigest(), '084BFF58')

- # Verify the .copy() method

- x = crc.copy()

- self.assertTrue(x is not crc)

- str_rep = \

-'''poly = 0x104C11DB7

-reverse = True

-initCrc = 0x00000000

-xorOut = 0xFFFFFFFF

-crcValue = 0x084BFF58'''

- self.assertEqual(str(crc), str_rep)

- self.assertEqual(str(x), str_rep)

- # Verify the .new() method

- y = crc.new()

- self.assertTrue(y is not crc)

- self.assertTrue(y is not x)

- str_rep = \

-'''poly = 0x104C11DB7

-reverse = True

-initCrc = 0x00000000

-xorOut = 0xFFFFFFFF

-crcValue = 0x00000000'''

- self.assertEqual(str(y), str_rep)

-class PredefinedCrcTest(unittest.TestCase):

- """Verify the predefined CRCs"""

- test_messages_for_known_answers = [

- b'', # Test cases below depend on this first entry being the empty string.

- b'T',

- b'CatMouse987654321',

- ]

- known_answers = [

- [ 'crc-aug-ccitt', (0x1D0F, 0xD6ED, 0x5637) ],

- [ 'x-25', (0x0000, 0xE4D9, 0x0A91) ],

- [ 'crc-32', (0x00000000, 0xBE047A60, 0x084BFF58) ],

- ]

- def test_known_answers(self):

- for crcfun_name, v in self.known_answers:

- crcfun = mkPredefinedCrcFun(crcfun_name)

- self.assertEqual(crcfun(b'',0), 0, "Wrong answer for CRC '%s', input ''" % crcfun_name)

- for i, msg in enumerate(self.test_messages_for_known_answers):

- self.assertEqual(crcfun(msg), v[i], "Wrong answer for CRC %s, input '%s'" % (crcfun_name,msg))

- self.assertEqual(crcfun(msg[4:], crcfun(msg[:4])), v[i], "Wrong answer for CRC %s, input '%s'" % (crcfun_name,msg))

- self.assertEqual(crcfun(msg[-1:], crcfun(msg[:-1])), v[i], "Wrong answer for CRC %s, input '%s'" % (crcfun_name,msg))

- def test_class_with_known_answers(self):

- for crcfun_name, v in self.known_answers:

- for i, msg in enumerate(self.test_messages_for_known_answers):

- crc1 = PredefinedCrc(crcfun_name)

- crc1.update(msg)

- self.assertEqual(crc1.crcValue, v[i], "Wrong answer for crc1 %s, input '%s'" % (crcfun_name,msg))

- crc2 = crc1.new()

- # Check that crc1 maintains its same value, after .new() call.

- self.assertEqual(crc1.crcValue, v[i], "Wrong state for crc1 %s, input '%s'" % (crcfun_name,msg))

- # Check that the new class instance created by .new() contains the initialisation value.

- # This depends on the first string in self.test_messages_for_known_answers being

- # the empty string.

- self.assertEqual(crc2.crcValue, v[0], "Wrong state for crc2 %s, input '%s'" % (crcfun_name,msg))

- crc2.update(msg)

- # Check that crc1 maintains its same value, after crc2 has called .update()

- self.assertEqual(crc1.crcValue, v[i], "Wrong state for crc1 %s, input '%s'" % (crcfun_name,msg))

- # Check that crc2 contains the right value after calling .update()

- self.assertEqual(crc2.crcValue, v[i], "Wrong state for crc2 %s, input '%s'" % (crcfun_name,msg))

- def test_function_predefined_table(self):

- for table_entry in _predefined_crc_definitions:

- # Check predefined function

- crc_func = mkPredefinedCrcFun(table_entry['name'])

- calc_value = crc_func(b"123456789")

- self.assertEqual(calc_value, table_entry['check'], "Wrong answer for CRC '%s'" % table_entry['name'])

- def test_class_predefined_table(self):

- for table_entry in _predefined_crc_definitions:

- # Check predefined class

- crc1 = PredefinedCrc(table_entry['name'])

- crc1.update(b"123456789")

- self.assertEqual(crc1.crcValue, table_entry['check'], "Wrong answer for CRC '%s'" % table_entry['name'])

-class InputTypesTest(unittest.TestCase):

- """Check the various input types that CRC functions can accept."""

- msg = b'CatMouse987654321'

- check_crc_names = [

- 'crc-aug-ccitt',

- 'x-25',

- 'crc-32',

- ]

- array_check_types = [

- 'B',

- 'H',

- 'I',

- 'L',

- ]

- def test_bytearray_input(self):

- """Test that bytearray inputs are accepted, as an example

- of a type that implements the buffer protocol."""

- for crc_name in self.check_crc_names:

- crcfun = mkPredefinedCrcFun(crc_name)

- for i in range(len(self.msg) + 1):

- test_msg = self.msg[:i]

- bytes_answer = crcfun(test_msg)

- bytearray_answer = crcfun(bytearray(test_msg))

- self.assertEqual(bytes_answer, bytearray_answer)

- def test_array_input(self):

- """Test that array inputs are accepted, as an example

- of a type that implements the buffer protocol."""

- for crc_name in self.check_crc_names:

- crcfun = mkPredefinedCrcFun(crc_name)

- for i in range(len(self.msg) + 1):

- test_msg = self.msg[:i]

- bytes_answer = crcfun(test_msg)

- for array_type in self.array_check_types:

- if i % array(array_type).itemsize == 0:

- test_array = array(array_type, test_msg)

- array_answer = crcfun(test_array)

- self.assertEqual(bytes_answer, array_answer)

- def test_unicode_input(self):

- """Test that Unicode input raises TypeError"""

- for crc_name in self.check_crc_names:

- crcfun = mkPredefinedCrcFun(crc_name)

- with self.assertRaises(TypeError):

- crcfun("123456789")

-def runtests():

- print("Using extension:", _usingExtension)

- print()

- unittest.main()

-if __name__ == '__main__':

- runtests()