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      1 import unittest
      2 from test import support
      3 import base64
      4 import binascii
      5 import os
      6 from array import array
      7 from test.support import script_helper
      8 
      9 
     10 class LegacyBase64TestCase(unittest.TestCase):
     11 
     12     # Legacy API is not as permissive as the modern API
     13     def check_type_errors(self, f):
     14         self.assertRaises(TypeError, f, "")
     15         self.assertRaises(TypeError, f, [])
     16         multidimensional = memoryview(b"1234").cast('B', (2, 2))
     17         self.assertRaises(TypeError, f, multidimensional)
     18         int_data = memoryview(b"1234").cast('I')
     19         self.assertRaises(TypeError, f, int_data)
     20 
     21     def test_encodestring_warns(self):
     22         with self.assertWarns(DeprecationWarning):
     23             base64.encodestring(b"www.python.org")
     24 
     25     def test_decodestring_warns(self):
     26         with self.assertWarns(DeprecationWarning):
     27             base64.decodestring(b"d3d3LnB5dGhvbi5vcmc=\n")
     28 
     29     def test_encodebytes(self):
     30         eq = self.assertEqual
     31         eq(base64.encodebytes(b"www.python.org"), b"d3d3LnB5dGhvbi5vcmc=\n")
     32         eq(base64.encodebytes(b"a"), b"YQ==\n")
     33         eq(base64.encodebytes(b"ab"), b"YWI=\n")
     34         eq(base64.encodebytes(b"abc"), b"YWJj\n")
     35         eq(base64.encodebytes(b""), b"")
     36         eq(base64.encodebytes(b"abcdefghijklmnopqrstuvwxyz"
     37                                b"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
     38                                b"0123456789!@#0^&*();:<>,. []{}"),
     39            b"YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE"
     40            b"RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0\nNT"
     41            b"Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==\n")
     42         # Non-bytes
     43         eq(base64.encodebytes(bytearray(b'abc')), b'YWJj\n')
     44         eq(base64.encodebytes(memoryview(b'abc')), b'YWJj\n')
     45         eq(base64.encodebytes(array('B', b'abc')), b'YWJj\n')
     46         self.check_type_errors(base64.encodebytes)
     47 
     48     def test_decodebytes(self):
     49         eq = self.assertEqual
     50         eq(base64.decodebytes(b"d3d3LnB5dGhvbi5vcmc=\n"), b"www.python.org")
     51         eq(base64.decodebytes(b"YQ==\n"), b"a")
     52         eq(base64.decodebytes(b"YWI=\n"), b"ab")
     53         eq(base64.decodebytes(b"YWJj\n"), b"abc")
     54         eq(base64.decodebytes(b"YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE"
     55                                b"RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0\nNT"
     56                                b"Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==\n"),
     57            b"abcdefghijklmnopqrstuvwxyz"
     58            b"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
     59            b"0123456789!@#0^&*();:<>,. []{}")
     60         eq(base64.decodebytes(b''), b'')
     61         # Non-bytes
     62         eq(base64.decodebytes(bytearray(b'YWJj\n')), b'abc')
     63         eq(base64.decodebytes(memoryview(b'YWJj\n')), b'abc')
     64         eq(base64.decodebytes(array('B', b'YWJj\n')), b'abc')
     65         self.check_type_errors(base64.decodebytes)
     66 
     67     def test_encode(self):
     68         eq = self.assertEqual
     69         from io import BytesIO, StringIO
     70         infp = BytesIO(b'abcdefghijklmnopqrstuvwxyz'
     71                        b'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
     72                        b'0123456789!@#0^&*();:<>,. []{}')
     73         outfp = BytesIO()
     74         base64.encode(infp, outfp)
     75         eq(outfp.getvalue(),
     76            b'YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE'
     77            b'RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0\nNT'
     78            b'Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==\n')
     79         # Non-binary files
     80         self.assertRaises(TypeError, base64.encode, StringIO('abc'), BytesIO())
     81         self.assertRaises(TypeError, base64.encode, BytesIO(b'abc'), StringIO())
     82         self.assertRaises(TypeError, base64.encode, StringIO('abc'), StringIO())
     83 
     84     def test_decode(self):
     85         from io import BytesIO, StringIO
     86         infp = BytesIO(b'd3d3LnB5dGhvbi5vcmc=')
     87         outfp = BytesIO()
     88         base64.decode(infp, outfp)
     89         self.assertEqual(outfp.getvalue(), b'www.python.org')
     90         # Non-binary files
     91         self.assertRaises(TypeError, base64.encode, StringIO('YWJj\n'), BytesIO())
     92         self.assertRaises(TypeError, base64.encode, BytesIO(b'YWJj\n'), StringIO())
     93         self.assertRaises(TypeError, base64.encode, StringIO('YWJj\n'), StringIO())
     94 
     95 
     96 class BaseXYTestCase(unittest.TestCase):
     97 
     98     # Modern API completely ignores exported dimension and format data and
     99     # treats any buffer as a stream of bytes
    100     def check_encode_type_errors(self, f):
    101         self.assertRaises(TypeError, f, "")
    102         self.assertRaises(TypeError, f, [])
    103 
    104     def check_decode_type_errors(self, f):
    105         self.assertRaises(TypeError, f, [])
    106 
    107     def check_other_types(self, f, bytes_data, expected):
    108         eq = self.assertEqual
    109         b = bytearray(bytes_data)
    110         eq(f(b), expected)
    111         # The bytearray wasn't mutated
    112         eq(b, bytes_data)
    113         eq(f(memoryview(bytes_data)), expected)
    114         eq(f(array('B', bytes_data)), expected)
    115         # XXX why is b64encode hardcoded here?
    116         self.check_nonbyte_element_format(base64.b64encode, bytes_data)
    117         self.check_multidimensional(base64.b64encode, bytes_data)
    118 
    119     def check_multidimensional(self, f, data):
    120         padding = b"\x00" if len(data) % 2 else b""
    121         bytes_data = data + padding # Make sure cast works
    122         shape = (len(bytes_data) // 2, 2)
    123         multidimensional = memoryview(bytes_data).cast('B', shape)
    124         self.assertEqual(f(multidimensional), f(bytes_data))
    125 
    126     def check_nonbyte_element_format(self, f, data):
    127         padding = b"\x00" * ((4 - len(data)) % 4)
    128         bytes_data = data + padding # Make sure cast works
    129         int_data = memoryview(bytes_data).cast('I')
    130         self.assertEqual(f(int_data), f(bytes_data))
    131 
    132 
    133     def test_b64encode(self):
    134         eq = self.assertEqual
    135         # Test default alphabet
    136         eq(base64.b64encode(b"www.python.org"), b"d3d3LnB5dGhvbi5vcmc=")
    137         eq(base64.b64encode(b'\x00'), b'AA==')
    138         eq(base64.b64encode(b"a"), b"YQ==")
    139         eq(base64.b64encode(b"ab"), b"YWI=")
    140         eq(base64.b64encode(b"abc"), b"YWJj")
    141         eq(base64.b64encode(b""), b"")
    142         eq(base64.b64encode(b"abcdefghijklmnopqrstuvwxyz"
    143                             b"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    144                             b"0123456789!@#0^&*();:<>,. []{}"),
    145            b"YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE"
    146            b"RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0NT"
    147            b"Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==")
    148         # Test with arbitrary alternative characters
    149         eq(base64.b64encode(b'\xd3V\xbeo\xf7\x1d', altchars=b'*$'), b'01a*b$cd')
    150         eq(base64.b64encode(b'\xd3V\xbeo\xf7\x1d', altchars=bytearray(b'*$')),
    151            b'01a*b$cd')
    152         eq(base64.b64encode(b'\xd3V\xbeo\xf7\x1d', altchars=memoryview(b'*$')),
    153            b'01a*b$cd')
    154         eq(base64.b64encode(b'\xd3V\xbeo\xf7\x1d', altchars=array('B', b'*$')),
    155            b'01a*b$cd')
    156         # Non-bytes
    157         self.check_other_types(base64.b64encode, b'abcd', b'YWJjZA==')
    158         self.check_encode_type_errors(base64.b64encode)
    159         self.assertRaises(TypeError, base64.b64encode, b"", altchars="*$")
    160         # Test standard alphabet
    161         eq(base64.standard_b64encode(b"www.python.org"), b"d3d3LnB5dGhvbi5vcmc=")
    162         eq(base64.standard_b64encode(b"a"), b"YQ==")
    163         eq(base64.standard_b64encode(b"ab"), b"YWI=")
    164         eq(base64.standard_b64encode(b"abc"), b"YWJj")
    165         eq(base64.standard_b64encode(b""), b"")
    166         eq(base64.standard_b64encode(b"abcdefghijklmnopqrstuvwxyz"
    167                                      b"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    168                                      b"0123456789!@#0^&*();:<>,. []{}"),
    169            b"YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE"
    170            b"RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0NT"
    171            b"Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==")
    172         # Non-bytes
    173         self.check_other_types(base64.standard_b64encode,
    174                                b'abcd', b'YWJjZA==')
    175         self.check_encode_type_errors(base64.standard_b64encode)
    176         # Test with 'URL safe' alternative characters
    177         eq(base64.urlsafe_b64encode(b'\xd3V\xbeo\xf7\x1d'), b'01a-b_cd')
    178         # Non-bytes
    179         self.check_other_types(base64.urlsafe_b64encode,
    180                                b'\xd3V\xbeo\xf7\x1d', b'01a-b_cd')
    181         self.check_encode_type_errors(base64.urlsafe_b64encode)
    182 
    183     def test_b64decode(self):
    184         eq = self.assertEqual
    185 
    186         tests = {b"d3d3LnB5dGhvbi5vcmc=": b"www.python.org",
    187                  b'AA==': b'\x00',
    188                  b"YQ==": b"a",
    189                  b"YWI=": b"ab",
    190                  b"YWJj": b"abc",
    191                  b"YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE"
    192                  b"RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0\nNT"
    193                  b"Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==":
    194 
    195                  b"abcdefghijklmnopqrstuvwxyz"
    196                  b"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    197                  b"0123456789!@#0^&*();:<>,. []{}",
    198                  b'': b'',
    199                  }
    200         for data, res in tests.items():
    201             eq(base64.b64decode(data), res)
    202             eq(base64.b64decode(data.decode('ascii')), res)
    203         # Non-bytes
    204         self.check_other_types(base64.b64decode, b"YWJj", b"abc")
    205         self.check_decode_type_errors(base64.b64decode)
    206 
    207         # Test with arbitrary alternative characters
    208         tests_altchars = {(b'01a*b$cd', b'*$'): b'\xd3V\xbeo\xf7\x1d',
    209                           }
    210         for (data, altchars), res in tests_altchars.items():
    211             data_str = data.decode('ascii')
    212             altchars_str = altchars.decode('ascii')
    213 
    214             eq(base64.b64decode(data, altchars=altchars), res)
    215             eq(base64.b64decode(data_str, altchars=altchars), res)
    216             eq(base64.b64decode(data, altchars=altchars_str), res)
    217             eq(base64.b64decode(data_str, altchars=altchars_str), res)
    218 
    219         # Test standard alphabet
    220         for data, res in tests.items():
    221             eq(base64.standard_b64decode(data), res)
    222             eq(base64.standard_b64decode(data.decode('ascii')), res)
    223         # Non-bytes
    224         self.check_other_types(base64.standard_b64decode, b"YWJj", b"abc")
    225         self.check_decode_type_errors(base64.standard_b64decode)
    226 
    227         # Test with 'URL safe' alternative characters
    228         tests_urlsafe = {b'01a-b_cd': b'\xd3V\xbeo\xf7\x1d',
    229                          b'': b'',
    230                          }
    231         for data, res in tests_urlsafe.items():
    232             eq(base64.urlsafe_b64decode(data), res)
    233             eq(base64.urlsafe_b64decode(data.decode('ascii')), res)
    234         # Non-bytes
    235         self.check_other_types(base64.urlsafe_b64decode, b'01a-b_cd',
    236                                b'\xd3V\xbeo\xf7\x1d')
    237         self.check_decode_type_errors(base64.urlsafe_b64decode)
    238 
    239     def test_b64decode_padding_error(self):
    240         self.assertRaises(binascii.Error, base64.b64decode, b'abc')
    241         self.assertRaises(binascii.Error, base64.b64decode, 'abc')
    242 
    243     def test_b64decode_invalid_chars(self):
    244         # issue 1466065: Test some invalid characters.
    245         tests = ((b'%3d==', b'\xdd'),
    246                  (b'$3d==', b'\xdd'),
    247                  (b'[==', b''),
    248                  (b'YW]3=', b'am'),
    249                  (b'3{d==', b'\xdd'),
    250                  (b'3d}==', b'\xdd'),
    251                  (b'@@', b''),
    252                  (b'!', b''),
    253                  (b'YWJj\nYWI=', b'abcab'))
    254         funcs = (
    255             base64.b64decode,
    256             base64.standard_b64decode,
    257             base64.urlsafe_b64decode,
    258         )
    259         for bstr, res in tests:
    260             for func in funcs:
    261                 with self.subTest(bstr=bstr, func=func):
    262                     self.assertEqual(func(bstr), res)
    263                     self.assertEqual(func(bstr.decode('ascii')), res)
    264             with self.assertRaises(binascii.Error):
    265                 base64.b64decode(bstr, validate=True)
    266             with self.assertRaises(binascii.Error):
    267                 base64.b64decode(bstr.decode('ascii'), validate=True)
    268 
    269         # Normal alphabet characters not discarded when alternative given
    270         res = b'\xFB\xEF\xBE\xFF\xFF\xFF'
    271         self.assertEqual(base64.b64decode(b'++[[//]]', b'[]'), res)
    272         self.assertEqual(base64.urlsafe_b64decode(b'++--//__'), res)
    273 
    274     def test_b32encode(self):
    275         eq = self.assertEqual
    276         eq(base64.b32encode(b''), b'')
    277         eq(base64.b32encode(b'\x00'), b'AA======')
    278         eq(base64.b32encode(b'a'), b'ME======')
    279         eq(base64.b32encode(b'ab'), b'MFRA====')
    280         eq(base64.b32encode(b'abc'), b'MFRGG===')
    281         eq(base64.b32encode(b'abcd'), b'MFRGGZA=')
    282         eq(base64.b32encode(b'abcde'), b'MFRGGZDF')
    283         # Non-bytes
    284         self.check_other_types(base64.b32encode, b'abcd', b'MFRGGZA=')
    285         self.check_encode_type_errors(base64.b32encode)
    286 
    287     def test_b32decode(self):
    288         eq = self.assertEqual
    289         tests = {b'': b'',
    290                  b'AA======': b'\x00',
    291                  b'ME======': b'a',
    292                  b'MFRA====': b'ab',
    293                  b'MFRGG===': b'abc',
    294                  b'MFRGGZA=': b'abcd',
    295                  b'MFRGGZDF': b'abcde',
    296                  }
    297         for data, res in tests.items():
    298             eq(base64.b32decode(data), res)
    299             eq(base64.b32decode(data.decode('ascii')), res)
    300         # Non-bytes
    301         self.check_other_types(base64.b32decode, b'MFRGG===', b"abc")
    302         self.check_decode_type_errors(base64.b32decode)
    303 
    304     def test_b32decode_casefold(self):
    305         eq = self.assertEqual
    306         tests = {b'': b'',
    307                  b'ME======': b'a',
    308                  b'MFRA====': b'ab',
    309                  b'MFRGG===': b'abc',
    310                  b'MFRGGZA=': b'abcd',
    311                  b'MFRGGZDF': b'abcde',
    312                  # Lower cases
    313                  b'me======': b'a',
    314                  b'mfra====': b'ab',
    315                  b'mfrgg===': b'abc',
    316                  b'mfrggza=': b'abcd',
    317                  b'mfrggzdf': b'abcde',
    318                  }
    319 
    320         for data, res in tests.items():
    321             eq(base64.b32decode(data, True), res)
    322             eq(base64.b32decode(data.decode('ascii'), True), res)
    323 
    324         self.assertRaises(binascii.Error, base64.b32decode, b'me======')
    325         self.assertRaises(binascii.Error, base64.b32decode, 'me======')
    326 
    327         # Mapping zero and one
    328         eq(base64.b32decode(b'MLO23456'), b'b\xdd\xad\xf3\xbe')
    329         eq(base64.b32decode('MLO23456'), b'b\xdd\xad\xf3\xbe')
    330 
    331         map_tests = {(b'M1023456', b'L'): b'b\xdd\xad\xf3\xbe',
    332                      (b'M1023456', b'I'): b'b\x1d\xad\xf3\xbe',
    333                      }
    334         for (data, map01), res in map_tests.items():
    335             data_str = data.decode('ascii')
    336             map01_str = map01.decode('ascii')
    337 
    338             eq(base64.b32decode(data, map01=map01), res)
    339             eq(base64.b32decode(data_str, map01=map01), res)
    340             eq(base64.b32decode(data, map01=map01_str), res)
    341             eq(base64.b32decode(data_str, map01=map01_str), res)
    342             self.assertRaises(binascii.Error, base64.b32decode, data)
    343             self.assertRaises(binascii.Error, base64.b32decode, data_str)
    344 
    345     def test_b32decode_error(self):
    346         tests = [b'abc', b'ABCDEF==', b'==ABCDEF']
    347         prefixes = [b'M', b'ME', b'MFRA', b'MFRGG', b'MFRGGZA', b'MFRGGZDF']
    348         for i in range(0, 17):
    349             if i:
    350                 tests.append(b'='*i)
    351             for prefix in prefixes:
    352                 if len(prefix) + i != 8:
    353                     tests.append(prefix + b'='*i)
    354         for data in tests:
    355             with self.subTest(data=data):
    356                 with self.assertRaises(binascii.Error):
    357                     base64.b32decode(data)
    358                 with self.assertRaises(binascii.Error):
    359                     base64.b32decode(data.decode('ascii'))
    360 
    361     def test_b16encode(self):
    362         eq = self.assertEqual
    363         eq(base64.b16encode(b'\x01\x02\xab\xcd\xef'), b'0102ABCDEF')
    364         eq(base64.b16encode(b'\x00'), b'00')
    365         # Non-bytes
    366         self.check_other_types(base64.b16encode, b'\x01\x02\xab\xcd\xef',
    367                                b'0102ABCDEF')
    368         self.check_encode_type_errors(base64.b16encode)
    369 
    370     def test_b16decode(self):
    371         eq = self.assertEqual
    372         eq(base64.b16decode(b'0102ABCDEF'), b'\x01\x02\xab\xcd\xef')
    373         eq(base64.b16decode('0102ABCDEF'), b'\x01\x02\xab\xcd\xef')
    374         eq(base64.b16decode(b'00'), b'\x00')
    375         eq(base64.b16decode('00'), b'\x00')
    376         # Lower case is not allowed without a flag
    377         self.assertRaises(binascii.Error, base64.b16decode, b'0102abcdef')
    378         self.assertRaises(binascii.Error, base64.b16decode, '0102abcdef')
    379         # Case fold
    380         eq(base64.b16decode(b'0102abcdef', True), b'\x01\x02\xab\xcd\xef')
    381         eq(base64.b16decode('0102abcdef', True), b'\x01\x02\xab\xcd\xef')
    382         # Non-bytes
    383         self.check_other_types(base64.b16decode, b"0102ABCDEF",
    384                                b'\x01\x02\xab\xcd\xef')
    385         self.check_decode_type_errors(base64.b16decode)
    386         eq(base64.b16decode(bytearray(b"0102abcdef"), True),
    387            b'\x01\x02\xab\xcd\xef')
    388         eq(base64.b16decode(memoryview(b"0102abcdef"), True),
    389            b'\x01\x02\xab\xcd\xef')
    390         eq(base64.b16decode(array('B', b"0102abcdef"), True),
    391            b'\x01\x02\xab\xcd\xef')
    392         # Non-alphabet characters
    393         self.assertRaises(binascii.Error, base64.b16decode, '0102AG')
    394         # Incorrect "padding"
    395         self.assertRaises(binascii.Error, base64.b16decode, '010')
    396 
    397     def test_a85encode(self):
    398         eq = self.assertEqual
    399 
    400         tests = {
    401             b'': b'',
    402             b"www.python.org": b'GB\\6`E-ZP=Df.1GEb>',
    403             bytes(range(255)): b"""!!*-'"9eu7#RLhG$k3[W&.oNg'GVB"(`=52*$$"""
    404                b"""(B+<_pR,UFcb-n-Vr/1iJ-0JP==1c70M3&s#]4?Ykm5X@_(6q'R884cE"""
    405                b"""H9MJ8X:f1+h<)lt#=BSg3>[:ZC?t!MSA7]@cBPD3sCi+'.E,fo>FEMbN"""
    406                b"""G^4U^I!pHnJ:W<)KS>/9Ll%"IN/`jYOHG]iPa.Q$R$jD4S=Q7DTV8*TU"""
    407                b"""nsrdW2ZetXKAY/Yd(L?['d?O\\@K2_]Y2%o^qmn*`5Ta:aN;TJbg"GZd"""
    408                b"""*^:jeCE.%f\\,!5gtgiEi8N\\UjQ5OekiqBum-X60nF?)@o_%qPq"ad`"""
    409                b"""r;HT""",
    410             b"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    411                 b"0123456789!@#0^&*();:<>,. []{}":
    412                 b'@:E_WAS,RgBkhF"D/O92EH6,BF`qtRH$VbC6UX@47n?3D92&&T'
    413                 b":Jand;cHat='/U/0JP==1c70M3&r-I,;<FN.OZ`-3]oSW/g+A(H[P",
    414             b"no padding..": b'DJpY:@:Wn_DJ(RS',
    415             b"zero compression\0\0\0\0": b'H=_,8+Cf>,E,oN2F(oQ1z',
    416             b"zero compression\0\0\0": b'H=_,8+Cf>,E,oN2F(oQ1!!!!',
    417             b"Boundary:\0\0\0\0": b'6>q!aA79M(3WK-[!!',
    418             b"Space compr:    ": b';fH/TAKYK$D/aMV+<VdL',
    419             b'\xff': b'rr',
    420             b'\xff'*2: b's8N',
    421             b'\xff'*3: b's8W*',
    422             b'\xff'*4: b's8W-!',
    423             }
    424 
    425         for data, res in tests.items():
    426             eq(base64.a85encode(data), res, data)
    427             eq(base64.a85encode(data, adobe=False), res, data)
    428             eq(base64.a85encode(data, adobe=True), b'<~' + res + b'~>', data)
    429 
    430         self.check_other_types(base64.a85encode, b"www.python.org",
    431                                b'GB\\6`E-ZP=Df.1GEb>')
    432 
    433         self.assertRaises(TypeError, base64.a85encode, "")
    434 
    435         eq(base64.a85encode(b"www.python.org", wrapcol=7, adobe=False),
    436            b'GB\\6`E-\nZP=Df.1\nGEb>')
    437         eq(base64.a85encode(b"\0\0\0\0www.python.org", wrapcol=7, adobe=False),
    438            b'zGB\\6`E\n-ZP=Df.\n1GEb>')
    439         eq(base64.a85encode(b"www.python.org", wrapcol=7, adobe=True),
    440            b'<~GB\\6`\nE-ZP=Df\n.1GEb>\n~>')
    441 
    442         eq(base64.a85encode(b' '*8, foldspaces=True, adobe=False), b'yy')
    443         eq(base64.a85encode(b' '*7, foldspaces=True, adobe=False), b'y+<Vd')
    444         eq(base64.a85encode(b' '*6, foldspaces=True, adobe=False), b'y+<U')
    445         eq(base64.a85encode(b' '*5, foldspaces=True, adobe=False), b'y+9')
    446 
    447     def test_b85encode(self):
    448         eq = self.assertEqual
    449 
    450         tests = {
    451             b'': b'',
    452             b'www.python.org': b'cXxL#aCvlSZ*DGca%T',
    453             bytes(range(255)): b"""009C61O)~M2nh-c3=Iws5D^j+6crX17#SKH9337X"""
    454                 b"""AR!_nBqb&%C@Cr{EG;fCFflSSG&MFiI5|2yJUu=?KtV!7L`6nNNJ&ad"""
    455                 b"""OifNtP*GA-R8>}2SXo+ITwPvYU}0ioWMyV&XlZI|Y;A6DaB*^Tbai%j"""
    456                 b"""czJqze0_d@fPsR8goTEOh>41ejE#<ukdcy;l$Dm3n3<ZJoSmMZprN9p"""
    457                 b"""q@|{(sHv)}tgWuEu(7hUw6(UkxVgH!yuH4^z`?@9#Kp$P$jQpf%+1cv"""
    458                 b"""(9zP<)YaD4*xB0K+}+;a;Njxq<mKk)=;`X~?CtLF@bU8V^!4`l`1$(#"""
    459                 b"""{Qdp""",
    460             b"""abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"""
    461                 b"""0123456789!@#0^&*();:<>,. []{}""":
    462                 b"""VPa!sWoBn+X=-b1ZEkOHadLBXb#`}nd3r%YLqtVJM@UIZOH55pPf$@("""
    463                 b"""Q&d$}S6EqEFflSSG&MFiI5{CeBQRbjDkv#CIy^osE+AW7dwl""",
    464             b'no padding..': b'Zf_uPVPs@!Zf7no',
    465             b'zero compression\x00\x00\x00\x00': b'dS!BNAY*TBaB^jHb7^mG00000',
    466             b'zero compression\x00\x00\x00': b'dS!BNAY*TBaB^jHb7^mG0000',
    467             b"""Boundary:\x00\x00\x00\x00""": b"""LT`0$WMOi7IsgCw00""",
    468             b'Space compr:    ': b'Q*dEpWgug3ZE$irARr(h',
    469             b'\xff': b'{{',
    470             b'\xff'*2: b'|Nj',
    471             b'\xff'*3: b'|Ns9',
    472             b'\xff'*4: b'|NsC0',
    473         }
    474 
    475         for data, res in tests.items():
    476             eq(base64.b85encode(data), res)
    477 
    478         self.check_other_types(base64.b85encode, b"www.python.org",
    479                                b'cXxL#aCvlSZ*DGca%T')
    480 
    481     def test_a85decode(self):
    482         eq = self.assertEqual
    483 
    484         tests = {
    485             b'': b'',
    486             b'GB\\6`E-ZP=Df.1GEb>': b'www.python.org',
    487             b"""! ! * -'"\n\t\t9eu\r\n7#  RL\vhG$k3[W&.oNg'GVB"(`=52*$$"""
    488                b"""(B+<_pR,UFcb-n-Vr/1iJ-0JP==1c70M3&s#]4?Ykm5X@_(6q'R884cE"""
    489                b"""H9MJ8X:f1+h<)lt#=BSg3>[:ZC?t!MSA7]@cBPD3sCi+'.E,fo>FEMbN"""
    490                b"""G^4U^I!pHnJ:W<)KS>/9Ll%"IN/`jYOHG]iPa.Q$R$jD4S=Q7DTV8*TU"""
    491                b"""nsrdW2ZetXKAY/Yd(L?['d?O\\@K2_]Y2%o^qmn*`5Ta:aN;TJbg"GZd"""
    492                b"""*^:jeCE.%f\\,!5gtgiEi8N\\UjQ5OekiqBum-X60nF?)@o_%qPq"ad`"""
    493                b"""r;HT""": bytes(range(255)),
    494             b"""@:E_WAS,RgBkhF"D/O92EH6,BF`qtRH$VbC6UX@47n?3D92&&T:Jand;c"""
    495                 b"""Hat='/U/0JP==1c70M3&r-I,;<FN.OZ`-3]oSW/g+A(H[P""":
    496                 b'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234'
    497                 b'56789!@#0^&*();:<>,. []{}',
    498             b'DJpY:@:Wn_DJ(RS': b'no padding..',
    499             b'H=_,8+Cf>,E,oN2F(oQ1z': b'zero compression\x00\x00\x00\x00',
    500             b'H=_,8+Cf>,E,oN2F(oQ1!!!!': b'zero compression\x00\x00\x00',
    501             b'6>q!aA79M(3WK-[!!': b"Boundary:\x00\x00\x00\x00",
    502             b';fH/TAKYK$D/aMV+<VdL': b'Space compr:    ',
    503             b'rr': b'\xff',
    504             b's8N': b'\xff'*2,
    505             b's8W*': b'\xff'*3,
    506             b's8W-!': b'\xff'*4,
    507             }
    508 
    509         for data, res in tests.items():
    510             eq(base64.a85decode(data), res, data)
    511             eq(base64.a85decode(data, adobe=False), res, data)
    512             eq(base64.a85decode(data.decode("ascii"), adobe=False), res, data)
    513             eq(base64.a85decode(b'<~' + data + b'~>', adobe=True), res, data)
    514             eq(base64.a85decode(data + b'~>', adobe=True), res, data)
    515             eq(base64.a85decode('<~%s~>' % data.decode("ascii"), adobe=True),
    516                res, data)
    517 
    518         eq(base64.a85decode(b'yy', foldspaces=True, adobe=False), b' '*8)
    519         eq(base64.a85decode(b'y+<Vd', foldspaces=True, adobe=False), b' '*7)
    520         eq(base64.a85decode(b'y+<U', foldspaces=True, adobe=False), b' '*6)
    521         eq(base64.a85decode(b'y+9', foldspaces=True, adobe=False), b' '*5)
    522 
    523         self.check_other_types(base64.a85decode, b'GB\\6`E-ZP=Df.1GEb>',
    524                                b"www.python.org")
    525 
    526     def test_b85decode(self):
    527         eq = self.assertEqual
    528 
    529         tests = {
    530             b'': b'',
    531             b'cXxL#aCvlSZ*DGca%T': b'www.python.org',
    532             b"""009C61O)~M2nh-c3=Iws5D^j+6crX17#SKH9337X"""
    533                 b"""AR!_nBqb&%C@Cr{EG;fCFflSSG&MFiI5|2yJUu=?KtV!7L`6nNNJ&ad"""
    534                 b"""OifNtP*GA-R8>}2SXo+ITwPvYU}0ioWMyV&XlZI|Y;A6DaB*^Tbai%j"""
    535                 b"""czJqze0_d@fPsR8goTEOh>41ejE#<ukdcy;l$Dm3n3<ZJoSmMZprN9p"""
    536                 b"""q@|{(sHv)}tgWuEu(7hUw6(UkxVgH!yuH4^z`?@9#Kp$P$jQpf%+1cv"""
    537                 b"""(9zP<)YaD4*xB0K+}+;a;Njxq<mKk)=;`X~?CtLF@bU8V^!4`l`1$(#"""
    538                 b"""{Qdp""": bytes(range(255)),
    539             b"""VPa!sWoBn+X=-b1ZEkOHadLBXb#`}nd3r%YLqtVJM@UIZOH55pPf$@("""
    540                 b"""Q&d$}S6EqEFflSSG&MFiI5{CeBQRbjDkv#CIy^osE+AW7dwl""":
    541                 b"""abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"""
    542                 b"""0123456789!@#0^&*();:<>,. []{}""",
    543             b'Zf_uPVPs@!Zf7no': b'no padding..',
    544             b'dS!BNAY*TBaB^jHb7^mG00000': b'zero compression\x00\x00\x00\x00',
    545             b'dS!BNAY*TBaB^jHb7^mG0000': b'zero compression\x00\x00\x00',
    546             b"""LT`0$WMOi7IsgCw00""": b"""Boundary:\x00\x00\x00\x00""",
    547             b'Q*dEpWgug3ZE$irARr(h': b'Space compr:    ',
    548             b'{{': b'\xff',
    549             b'|Nj': b'\xff'*2,
    550             b'|Ns9': b'\xff'*3,
    551             b'|NsC0': b'\xff'*4,
    552         }
    553 
    554         for data, res in tests.items():
    555             eq(base64.b85decode(data), res)
    556             eq(base64.b85decode(data.decode("ascii")), res)
    557 
    558         self.check_other_types(base64.b85decode, b'cXxL#aCvlSZ*DGca%T',
    559                                b"www.python.org")
    560 
    561     def test_a85_padding(self):
    562         eq = self.assertEqual
    563 
    564         eq(base64.a85encode(b"x", pad=True), b'GQ7^D')
    565         eq(base64.a85encode(b"xx", pad=True), b"G^'2g")
    566         eq(base64.a85encode(b"xxx", pad=True), b'G^+H5')
    567         eq(base64.a85encode(b"xxxx", pad=True), b'G^+IX')
    568         eq(base64.a85encode(b"xxxxx", pad=True), b'G^+IXGQ7^D')
    569 
    570         eq(base64.a85decode(b'GQ7^D'), b"x\x00\x00\x00")
    571         eq(base64.a85decode(b"G^'2g"), b"xx\x00\x00")
    572         eq(base64.a85decode(b'G^+H5'), b"xxx\x00")
    573         eq(base64.a85decode(b'G^+IX'), b"xxxx")
    574         eq(base64.a85decode(b'G^+IXGQ7^D'), b"xxxxx\x00\x00\x00")
    575 
    576     def test_b85_padding(self):
    577         eq = self.assertEqual
    578 
    579         eq(base64.b85encode(b"x", pad=True), b'cmMzZ')
    580         eq(base64.b85encode(b"xx", pad=True), b'cz6H+')
    581         eq(base64.b85encode(b"xxx", pad=True), b'czAdK')
    582         eq(base64.b85encode(b"xxxx", pad=True), b'czAet')
    583         eq(base64.b85encode(b"xxxxx", pad=True), b'czAetcmMzZ')
    584 
    585         eq(base64.b85decode(b'cmMzZ'), b"x\x00\x00\x00")
    586         eq(base64.b85decode(b'cz6H+'), b"xx\x00\x00")
    587         eq(base64.b85decode(b'czAdK'), b"xxx\x00")
    588         eq(base64.b85decode(b'czAet'), b"xxxx")
    589         eq(base64.b85decode(b'czAetcmMzZ'), b"xxxxx\x00\x00\x00")
    590 
    591     def test_a85decode_errors(self):
    592         illegal = (set(range(32)) | set(range(118, 256))) - set(b' \t\n\r\v')
    593         for c in illegal:
    594             with self.assertRaises(ValueError, msg=bytes([c])):
    595                 base64.a85decode(b'!!!!' + bytes([c]))
    596             with self.assertRaises(ValueError, msg=bytes([c])):
    597                 base64.a85decode(b'!!!!' + bytes([c]), adobe=False)
    598             with self.assertRaises(ValueError, msg=bytes([c])):
    599                 base64.a85decode(b'<~!!!!' + bytes([c]) + b'~>', adobe=True)
    600 
    601         self.assertRaises(ValueError, base64.a85decode,
    602                                       b"malformed", adobe=True)
    603         self.assertRaises(ValueError, base64.a85decode,
    604                                       b"<~still malformed", adobe=True)
    605 
    606         # With adobe=False (the default), Adobe framing markers are disallowed
    607         self.assertRaises(ValueError, base64.a85decode,
    608                                       b"<~~>")
    609         self.assertRaises(ValueError, base64.a85decode,
    610                                       b"<~~>", adobe=False)
    611         base64.a85decode(b"<~~>", adobe=True)  # sanity check
    612 
    613         self.assertRaises(ValueError, base64.a85decode,
    614                                       b"abcx", adobe=False)
    615         self.assertRaises(ValueError, base64.a85decode,
    616                                       b"abcdey", adobe=False)
    617         self.assertRaises(ValueError, base64.a85decode,
    618                                       b"a b\nc", adobe=False, ignorechars=b"")
    619 
    620         self.assertRaises(ValueError, base64.a85decode, b's', adobe=False)
    621         self.assertRaises(ValueError, base64.a85decode, b's8', adobe=False)
    622         self.assertRaises(ValueError, base64.a85decode, b's8W', adobe=False)
    623         self.assertRaises(ValueError, base64.a85decode, b's8W-', adobe=False)
    624         self.assertRaises(ValueError, base64.a85decode, b's8W-"', adobe=False)
    625 
    626     def test_b85decode_errors(self):
    627         illegal = list(range(33)) + \
    628                   list(b'"\',./:[\\]') + \
    629                   list(range(128, 256))
    630         for c in illegal:
    631             with self.assertRaises(ValueError, msg=bytes([c])):
    632                 base64.b85decode(b'0000' + bytes([c]))
    633 
    634         self.assertRaises(ValueError, base64.b85decode, b'|')
    635         self.assertRaises(ValueError, base64.b85decode, b'|N')
    636         self.assertRaises(ValueError, base64.b85decode, b'|Ns')
    637         self.assertRaises(ValueError, base64.b85decode, b'|NsC')
    638         self.assertRaises(ValueError, base64.b85decode, b'|NsC1')
    639 
    640     def test_decode_nonascii_str(self):
    641         decode_funcs = (base64.b64decode,
    642                         base64.standard_b64decode,
    643                         base64.urlsafe_b64decode,
    644                         base64.b32decode,
    645                         base64.b16decode,
    646                         base64.b85decode,
    647                         base64.a85decode)
    648         for f in decode_funcs:
    649             self.assertRaises(ValueError, f, 'with non-ascii \xcb')
    650 
    651     def test_ErrorHeritage(self):
    652         self.assertTrue(issubclass(binascii.Error, ValueError))
    653 
    654 
    655 class TestMain(unittest.TestCase):
    656     def tearDown(self):
    657         if os.path.exists(support.TESTFN):
    658             os.unlink(support.TESTFN)
    659 
    660     def get_output(self, *args):
    661         return script_helper.assert_python_ok('-m', 'base64', *args).out
    662 
    663     def test_encode_decode(self):
    664         output = self.get_output('-t')
    665         self.assertSequenceEqual(output.splitlines(), (
    666             b"b'Aladdin:open sesame'",
    667             br"b'QWxhZGRpbjpvcGVuIHNlc2FtZQ==\n'",
    668             b"b'Aladdin:open sesame'",
    669         ))
    670 
    671     def test_encode_file(self):
    672         with open(support.TESTFN, 'wb') as fp:
    673             fp.write(b'a\xffb\n')
    674         output = self.get_output('-e', support.TESTFN)
    675         self.assertEqual(output.rstrip(), b'Yf9iCg==')
    676 
    677     def test_encode_from_stdin(self):
    678         with script_helper.spawn_python('-m', 'base64', '-e') as proc:
    679             out, err = proc.communicate(b'a\xffb\n')
    680         self.assertEqual(out.rstrip(), b'Yf9iCg==')
    681         self.assertIsNone(err)
    682 
    683     def test_decode(self):
    684         with open(support.TESTFN, 'wb') as fp:
    685             fp.write(b'Yf9iCg==')
    686         output = self.get_output('-d', support.TESTFN)
    687         self.assertEqual(output.rstrip(), b'a\xffb')
    688 
    689 if __name__ == '__main__':
    690     unittest.main()
    691