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bpo-39353: Deprecate the binhex module (GH-18025)

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Deprecate binhex4 and hexbin4 standards. Deprecate the binhex module
and the following binascii functions:

* b2a_hqx(), a2b_hqx()
* rlecode_hqx(), rledecode_hqx()
* crc_hqx()
This commit is contained in:
Victor Stinner 2020-01-22 20:44:22 +01:00 • committed by GitHub
parent 14d80d0b60
commit beea26b57e
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9 changed files with 120 additions and 25 deletions
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22
Lib/test/test_binascii.py
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@ -4,6 +4,7 @@ import unittest
import binascii
import array
import re
from test import support
# Note: "*_hex" functions are aliases for "(un)hexlify"
b2a_functions = ['b2a_base64', 'b2a_hex', 'b2a_hqx', 'b2a_qp', 'b2a_uu',
@ -36,6 +37,7 @@ class BinASCIITest(unittest.TestCase):
self.assertTrue(hasattr(getattr(binascii, name), '__call__'))
self.assertRaises(TypeError, getattr(binascii, name))
@support.ignore_warnings(category=DeprecationWarning)
def test_returned_value(self):
# Limit to the minimum of all limits (b2a_uu)
MAX_ALL = 45
@ -179,6 +181,7 @@ class BinASCIITest(unittest.TestCase):
with self.assertRaises(TypeError):
binascii.b2a_uu(b"", True)
@support.ignore_warnings(category=DeprecationWarning)
def test_crc_hqx(self):
crc = binascii.crc_hqx(self.type2test(b"Test the CRC-32 of"), 0)
crc = binascii.crc_hqx(self.type2test(b" this string."), crc)
@ -198,6 +201,7 @@ class BinASCIITest(unittest.TestCase):
self.assertRaises(TypeError, binascii.crc32)
@support.ignore_warnings(category=DeprecationWarning)
def test_hqx(self):
# Perform binhex4 style RLE-compression
# Then calculate the hexbin4 binary-to-ASCII translation
@ -208,6 +212,7 @@ class BinASCIITest(unittest.TestCase):
res = binascii.rledecode_hqx(b)
self.assertEqual(res, self.rawdata)
@support.ignore_warnings(category=DeprecationWarning)
def test_rle(self):
# test repetition with a repetition longer than the limit of 255
data = (b'a' * 100 + b'b' + b'c' * 300)
@ -354,6 +359,7 @@ class BinASCIITest(unittest.TestCase):
self.assertEqual(b2a_qp(type2test(b'a.\n')), b'a.\n')
self.assertEqual(b2a_qp(type2test(b'.a')[:-1]), b'=2E')
@support.ignore_warnings(category=DeprecationWarning)
def test_empty_string(self):
# A test for SF bug #1022953. Make sure SystemError is not raised.
empty = self.type2test(b'')
@ -378,6 +384,7 @@ class BinASCIITest(unittest.TestCase):
# crc_hqx needs 2 arguments
self.assertRaises(TypeError, binascii.crc_hqx, "test", 0)
@support.ignore_warnings(category=DeprecationWarning)
def test_unicode_a2b(self):
# Unicode strings are accepted by a2b_* functions.
MAX_ALL = 45
@ -416,6 +423,21 @@ class BinASCIITest(unittest.TestCase):
self.assertEqual(binascii.b2a_base64(b, newline=False),
b'aGVsbG8=')
def test_deprecated_warnings(self):
with self.assertWarns(DeprecationWarning):
self.assertEqual(binascii.b2a_hqx(b'abc'), b'B@*M')
with self.assertWarns(DeprecationWarning):
self.assertEqual(binascii.a2b_hqx(b'B@*M'), (b'abc', 0))
with self.assertWarns(DeprecationWarning):
self.assertEqual(binascii.rlecode_hqx(b'a' * 10), b'a\x90\n')
with self.assertWarns(DeprecationWarning):
self.assertEqual(binascii.rledecode_hqx(b'a\x90\n'), b'a' * 10)
with self.assertWarns(DeprecationWarning):
self.assertEqual(binascii.crc_hqx(b'abc', 0), 40406)
class ArrayBinASCIITest(BinASCIITest):
def type2test(self, s):