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-rw-r--r--lib/python2.7/test/test_struct.py581
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diff --git a/lib/python2.7/test/test_struct.py b/lib/python2.7/test/test_struct.py
deleted file mode 100644
index 2e613f7..0000000
--- a/lib/python2.7/test/test_struct.py
+++ /dev/null
@@ -1,581 +0,0 @@
-import os
-import array
-import unittest
-import struct
-import inspect
-from test import test_support as support
-from test.test_support import (check_warnings, check_py3k_warnings)
-
-import sys
-ISBIGENDIAN = sys.byteorder == "big"
-IS32BIT = sys.maxsize == 0x7fffffff
-
-integer_codes = 'b', 'B', 'h', 'H', 'i', 'I', 'l', 'L', 'q', 'Q'
-
-testmod_filename = os.path.splitext(__file__)[0] + '.py'
-# Native 'q' packing isn't available on systems that don't have the C
-# long long type.
-try:
- struct.pack('q', 5)
-except struct.error:
- HAVE_LONG_LONG = False
-else:
- HAVE_LONG_LONG = True
-
-def string_reverse(s):
- return "".join(reversed(s))
-
-def bigendian_to_native(value):
- if ISBIGENDIAN:
- return value
- else:
- return string_reverse(value)
-
-class StructTest(unittest.TestCase):
-
- def check_float_coerce(self, format, number):
- # SF bug 1530559. struct.pack raises TypeError where it used
- # to convert.
- with check_warnings((".*integer argument expected, got float",
- DeprecationWarning)) as w:
- got = struct.pack(format, number)
- lineno = inspect.currentframe().f_lineno - 1
- self.assertEqual(w.filename, testmod_filename)
- self.assertEqual(w.lineno, lineno)
- self.assertEqual(len(w.warnings), 1)
- expected = struct.pack(format, int(number))
- self.assertEqual(got, expected)
-
- def test_isbigendian(self):
- self.assertEqual((struct.pack('=i', 1)[0] == chr(0)), ISBIGENDIAN)
-
- def test_consistence(self):
- self.assertRaises(struct.error, struct.calcsize, 'Z')
-
- sz = struct.calcsize('i')
- self.assertEqual(sz * 3, struct.calcsize('iii'))
-
- fmt = 'cbxxxxxxhhhhiillffd?'
- fmt3 = '3c3b18x12h6i6l6f3d3?'
- sz = struct.calcsize(fmt)
- sz3 = struct.calcsize(fmt3)
- self.assertEqual(sz * 3, sz3)
-
- self.assertRaises(struct.error, struct.pack, 'iii', 3)
- self.assertRaises(struct.error, struct.pack, 'i', 3, 3, 3)
- self.assertRaises((TypeError, struct.error), struct.pack, 'i', 'foo')
- self.assertRaises((TypeError, struct.error), struct.pack, 'P', 'foo')
- self.assertRaises(struct.error, struct.unpack, 'd', 'flap')
- s = struct.pack('ii', 1, 2)
- self.assertRaises(struct.error, struct.unpack, 'iii', s)
- self.assertRaises(struct.error, struct.unpack, 'i', s)
-
- def test_transitiveness(self):
- c = 'a'
- b = 1
- h = 255
- i = 65535
- l = 65536
- f = 3.1415
- d = 3.1415
- t = True
-
- for prefix in ('', '@', '<', '>', '=', '!'):
- for format in ('xcbhilfd?', 'xcBHILfd?'):
- format = prefix + format
- s = struct.pack(format, c, b, h, i, l, f, d, t)
- cp, bp, hp, ip, lp, fp, dp, tp = struct.unpack(format, s)
- self.assertEqual(cp, c)
- self.assertEqual(bp, b)
- self.assertEqual(hp, h)
- self.assertEqual(ip, i)
- self.assertEqual(lp, l)
- self.assertEqual(int(100 * fp), int(100 * f))
- self.assertEqual(int(100 * dp), int(100 * d))
- self.assertEqual(tp, t)
-
- def test_new_features(self):
- # Test some of the new features in detail
- # (format, argument, big-endian result, little-endian result, asymmetric)
- tests = [
- ('c', 'a', 'a', 'a', 0),
- ('xc', 'a', '\0a', '\0a', 0),
- ('cx', 'a', 'a\0', 'a\0', 0),
- ('s', 'a', 'a', 'a', 0),
- ('0s', 'helloworld', '', '', 1),
- ('1s', 'helloworld', 'h', 'h', 1),
- ('9s', 'helloworld', 'helloworl', 'helloworl', 1),
- ('10s', 'helloworld', 'helloworld', 'helloworld', 0),
- ('11s', 'helloworld', 'helloworld\0', 'helloworld\0', 1),
- ('20s', 'helloworld', 'helloworld'+10*'\0', 'helloworld'+10*'\0', 1),
- ('b', 7, '\7', '\7', 0),
- ('b', -7, '\371', '\371', 0),
- ('B', 7, '\7', '\7', 0),
- ('B', 249, '\371', '\371', 0),
- ('h', 700, '\002\274', '\274\002', 0),
- ('h', -700, '\375D', 'D\375', 0),
- ('H', 700, '\002\274', '\274\002', 0),
- ('H', 0x10000-700, '\375D', 'D\375', 0),
- ('i', 70000000, '\004,\035\200', '\200\035,\004', 0),
- ('i', -70000000, '\373\323\342\200', '\200\342\323\373', 0),
- ('I', 70000000L, '\004,\035\200', '\200\035,\004', 0),
- ('I', 0x100000000L-70000000, '\373\323\342\200', '\200\342\323\373', 0),
- ('l', 70000000, '\004,\035\200', '\200\035,\004', 0),
- ('l', -70000000, '\373\323\342\200', '\200\342\323\373', 0),
- ('L', 70000000L, '\004,\035\200', '\200\035,\004', 0),
- ('L', 0x100000000L-70000000, '\373\323\342\200', '\200\342\323\373', 0),
- ('f', 2.0, '@\000\000\000', '\000\000\000@', 0),
- ('d', 2.0, '@\000\000\000\000\000\000\000',
- '\000\000\000\000\000\000\000@', 0),
- ('f', -2.0, '\300\000\000\000', '\000\000\000\300', 0),
- ('d', -2.0, '\300\000\000\000\000\000\000\000',
- '\000\000\000\000\000\000\000\300', 0),
- ('?', 0, '\0', '\0', 0),
- ('?', 3, '\1', '\1', 1),
- ('?', True, '\1', '\1', 0),
- ('?', [], '\0', '\0', 1),
- ('?', (1,), '\1', '\1', 1),
- ]
-
- for fmt, arg, big, lil, asy in tests:
- for (xfmt, exp) in [('>'+fmt, big), ('!'+fmt, big), ('<'+fmt, lil),
- ('='+fmt, ISBIGENDIAN and big or lil)]:
- res = struct.pack(xfmt, arg)
- self.assertEqual(res, exp)
- self.assertEqual(struct.calcsize(xfmt), len(res))
- rev = struct.unpack(xfmt, res)[0]
- if rev != arg:
- self.assertTrue(asy)
-
- def test_calcsize(self):
- expected_size = {
- 'b': 1, 'B': 1,
- 'h': 2, 'H': 2,
- 'i': 4, 'I': 4,
- 'l': 4, 'L': 4,
- 'q': 8, 'Q': 8,
- }
-
- # standard integer sizes
- for code in integer_codes:
- for byteorder in ('=', '<', '>', '!'):
- format = byteorder+code
- size = struct.calcsize(format)
- self.assertEqual(size, expected_size[code])
-
- # native integer sizes, except 'q' and 'Q'
- for format_pair in ('bB', 'hH', 'iI', 'lL'):
- for byteorder in ['', '@']:
- signed_size = struct.calcsize(byteorder + format_pair[0])
- unsigned_size = struct.calcsize(byteorder + format_pair[1])
- self.assertEqual(signed_size, unsigned_size)
-
- # bounds for native integer sizes
- self.assertEqual(struct.calcsize('b'), 1)
- self.assertLessEqual(2, struct.calcsize('h'))
- self.assertLessEqual(4, struct.calcsize('l'))
- self.assertLessEqual(struct.calcsize('h'), struct.calcsize('i'))
- self.assertLessEqual(struct.calcsize('i'), struct.calcsize('l'))
-
- # tests for native 'q' and 'Q' when applicable
- if HAVE_LONG_LONG:
- self.assertEqual(struct.calcsize('q'), struct.calcsize('Q'))
- self.assertLessEqual(8, struct.calcsize('q'))
- self.assertLessEqual(struct.calcsize('l'), struct.calcsize('q'))
-
- def test_integers(self):
- # Integer tests (bBhHiIlLqQ).
- import binascii
-
- class IntTester(unittest.TestCase):
- def __init__(self, format):
- super(IntTester, self).__init__(methodName='test_one')
- self.format = format
- self.code = format[-1]
- self.direction = format[:-1]
- if not self.direction in ('', '@', '=', '<', '>', '!'):
- raise ValueError("unrecognized packing direction: %s" %
- self.direction)
- self.bytesize = struct.calcsize(format)
- self.bitsize = self.bytesize * 8
- if self.code in tuple('bhilq'):
- self.signed = True
- self.min_value = -(2L**(self.bitsize-1))
- self.max_value = 2L**(self.bitsize-1) - 1
- elif self.code in tuple('BHILQ'):
- self.signed = False
- self.min_value = 0
- self.max_value = 2L**self.bitsize - 1
- else:
- raise ValueError("unrecognized format code: %s" %
- self.code)
-
- def test_one(self, x, pack=struct.pack,
- unpack=struct.unpack,
- unhexlify=binascii.unhexlify):
-
- format = self.format
- if self.min_value <= x <= self.max_value:
- expected = long(x)
- if self.signed and x < 0:
- expected += 1L << self.bitsize
- self.assertGreaterEqual(expected, 0)
- expected = '%x' % expected
- if len(expected) & 1:
- expected = "0" + expected
- expected = unhexlify(expected)
- expected = ("\x00" * (self.bytesize - len(expected)) +
- expected)
- if (self.direction == '<' or
- self.direction in ('', '@', '=') and not ISBIGENDIAN):
- expected = string_reverse(expected)
- self.assertEqual(len(expected), self.bytesize)
-
- # Pack work?
- got = pack(format, x)
- self.assertEqual(got, expected)
-
- # Unpack work?
- retrieved = unpack(format, got)[0]
- self.assertEqual(x, retrieved)
-
- # Adding any byte should cause a "too big" error.
- self.assertRaises((struct.error, TypeError), unpack, format,
- '\x01' + got)
- else:
- # x is out of range -- verify pack realizes that.
- self.assertRaises((OverflowError, ValueError, struct.error),
- pack, format, x)
-
- def run(self):
- from random import randrange
-
- # Create all interesting powers of 2.
- values = []
- for exp in range(self.bitsize + 3):
- values.append(1L << exp)
-
- # Add some random values.
- for i in range(self.bitsize):
- val = 0L
- for j in range(self.bytesize):
- val = (val << 8) | randrange(256)
- values.append(val)
-
- # Values absorbed from other tests
- values.extend([300, 700000, sys.maxint*4])
-
- # Try all those, and their negations, and +-1 from
- # them. Note that this tests all power-of-2
- # boundaries in range, and a few out of range, plus
- # +-(2**n +- 1).
- for base in values:
- for val in -base, base:
- for incr in -1, 0, 1:
- x = val + incr
- self.test_one(int(x))
- self.test_one(long(x))
-
- # Some error cases.
- class NotAnIntNS(object):
- def __int__(self):
- return 42
-
- def __long__(self):
- return 1729L
-
- class NotAnIntOS:
- def __int__(self):
- return 85
-
- def __long__(self):
- return -163L
-
- # Objects with an '__index__' method should be allowed
- # to pack as integers. That is assuming the implemented
- # '__index__' method returns and 'int' or 'long'.
- class Indexable(object):
- def __init__(self, value):
- self._value = value
-
- def __index__(self):
- return self._value
-
- # If the '__index__' method raises a type error, then
- # '__int__' should be used with a deprecation warning.
- class BadIndex(object):
- def __index__(self):
- raise TypeError
-
- def __int__(self):
- return 42
-
- self.assertRaises((TypeError, struct.error),
- struct.pack, self.format,
- "a string")
- self.assertRaises((TypeError, struct.error),
- struct.pack, self.format,
- randrange)
- with check_warnings(("integer argument expected, "
- "got non-integer", DeprecationWarning)):
- with self.assertRaises((TypeError, struct.error)):
- struct.pack(self.format, 3+42j)
-
- # an attempt to convert a non-integer (with an
- # implicit conversion via __int__) should succeed,
- # with a DeprecationWarning
- for nonint in NotAnIntNS(), NotAnIntOS(), BadIndex():
- with check_warnings((".*integer argument expected, got non"
- "-integer", DeprecationWarning)) as w:
- got = struct.pack(self.format, nonint)
- lineno = inspect.currentframe().f_lineno - 1
- self.assertEqual(w.filename, testmod_filename)
- self.assertEqual(w.lineno, lineno)
- self.assertEqual(len(w.warnings), 1)
- expected = struct.pack(self.format, int(nonint))
- self.assertEqual(got, expected)
-
- # Check for legitimate values from '__index__'.
- for obj in (Indexable(0), Indexable(10), Indexable(17),
- Indexable(42), Indexable(100), Indexable(127)):
- try:
- struct.pack(format, obj)
- except:
- self.fail("integer code pack failed on object "
- "with '__index__' method")
-
- # Check for bogus values from '__index__'.
- for obj in (Indexable('a'), Indexable(u'b'), Indexable(None),
- Indexable({'a': 1}), Indexable([1, 2, 3])):
- self.assertRaises((TypeError, struct.error),
- struct.pack, self.format,
- obj)
-
- byteorders = '', '@', '=', '<', '>', '!'
- for code in integer_codes:
- for byteorder in byteorders:
- if (byteorder in ('', '@') and code in ('q', 'Q') and
- not HAVE_LONG_LONG):
- continue
- format = byteorder+code
- t = IntTester(format)
- t.run()
-
- def test_p_code(self):
- # Test p ("Pascal string") code.
- for code, input, expected, expectedback in [
- ('p','abc', '\x00', ''),
- ('1p', 'abc', '\x00', ''),
- ('2p', 'abc', '\x01a', 'a'),
- ('3p', 'abc', '\x02ab', 'ab'),
- ('4p', 'abc', '\x03abc', 'abc'),
- ('5p', 'abc', '\x03abc\x00', 'abc'),
- ('6p', 'abc', '\x03abc\x00\x00', 'abc'),
- ('1000p', 'x'*1000, '\xff' + 'x'*999, 'x'*255)]:
- got = struct.pack(code, input)
- self.assertEqual(got, expected)
- (got,) = struct.unpack(code, got)
- self.assertEqual(got, expectedback)
-
- def test_705836(self):
- # SF bug 705836. "<f" and ">f" had a severe rounding bug, where a carry
- # from the low-order discarded bits could propagate into the exponent
- # field, causing the result to be wrong by a factor of 2.
- import math
-
- for base in range(1, 33):
- # smaller <- largest representable float less than base.
- delta = 0.5
- while base - delta / 2.0 != base:
- delta /= 2.0
- smaller = base - delta
- # Packing this rounds away a solid string of trailing 1 bits.
- packed = struct.pack("<f", smaller)
- unpacked = struct.unpack("<f", packed)[0]
- # This failed at base = 2, 4, and 32, with unpacked = 1, 2, and
- # 16, respectively.
- self.assertEqual(base, unpacked)
- bigpacked = struct.pack(">f", smaller)
- self.assertEqual(bigpacked, string_reverse(packed))
- unpacked = struct.unpack(">f", bigpacked)[0]
- self.assertEqual(base, unpacked)
-
- # Largest finite IEEE single.
- big = (1 << 24) - 1
- big = math.ldexp(big, 127 - 23)
- packed = struct.pack(">f", big)
- unpacked = struct.unpack(">f", packed)[0]
- self.assertEqual(big, unpacked)
-
- # The same, but tack on a 1 bit so it rounds up to infinity.
- big = (1 << 25) - 1
- big = math.ldexp(big, 127 - 24)
- self.assertRaises(OverflowError, struct.pack, ">f", big)
-
- def test_1530559(self):
- # SF bug 1530559. struct.pack raises TypeError where it used to convert.
- for endian in ('', '>', '<'):
- for fmt in integer_codes:
- self.check_float_coerce(endian + fmt, 1.0)
- self.check_float_coerce(endian + fmt, 1.5)
-
- def test_unpack_from(self, cls=str):
- data = cls('abcd01234')
- fmt = '4s'
- s = struct.Struct(fmt)
-
- self.assertEqual(s.unpack_from(data), ('abcd',))
- self.assertEqual(struct.unpack_from(fmt, data), ('abcd',))
- for i in xrange(6):
- self.assertEqual(s.unpack_from(data, i), (data[i:i+4],))
- self.assertEqual(struct.unpack_from(fmt, data, i), (data[i:i+4],))
- for i in xrange(6, len(data) + 1):
- self.assertRaises(struct.error, s.unpack_from, data, i)
- self.assertRaises(struct.error, struct.unpack_from, fmt, data, i)
-
- def test_pack_into(self):
- test_string = 'Reykjavik rocks, eow!'
- writable_buf = array.array('c', ' '*100)
- fmt = '21s'
- s = struct.Struct(fmt)
-
- # Test without offset
- s.pack_into(writable_buf, 0, test_string)
- from_buf = writable_buf.tostring()[:len(test_string)]
- self.assertEqual(from_buf, test_string)
-
- # Test with offset.
- s.pack_into(writable_buf, 10, test_string)
- from_buf = writable_buf.tostring()[:len(test_string)+10]
- self.assertEqual(from_buf, test_string[:10] + test_string)
-
- # Go beyond boundaries.
- small_buf = array.array('c', ' '*10)
- self.assertRaises((ValueError, struct.error), s.pack_into, small_buf, 0,
- test_string)
- self.assertRaises((ValueError, struct.error), s.pack_into, small_buf, 2,
- test_string)
-
- # Test bogus offset (issue 3694)
- sb = small_buf
- self.assertRaises((TypeError, struct.error), struct.pack_into, b'', sb,
- None)
-
- def test_pack_into_fn(self):
- test_string = 'Reykjavik rocks, eow!'
- writable_buf = array.array('c', ' '*100)
- fmt = '21s'
- pack_into = lambda *args: struct.pack_into(fmt, *args)
-
- # Test without offset.
- pack_into(writable_buf, 0, test_string)
- from_buf = writable_buf.tostring()[:len(test_string)]
- self.assertEqual(from_buf, test_string)
-
- # Test with offset.
- pack_into(writable_buf, 10, test_string)
- from_buf = writable_buf.tostring()[:len(test_string)+10]
- self.assertEqual(from_buf, test_string[:10] + test_string)
-
- # Go beyond boundaries.
- small_buf = array.array('c', ' '*10)
- self.assertRaises((ValueError, struct.error), pack_into, small_buf, 0,
- test_string)
- self.assertRaises((ValueError, struct.error), pack_into, small_buf, 2,
- test_string)
-
- def test_unpack_with_buffer(self):
- with check_py3k_warnings(("buffer.. not supported in 3.x",
- DeprecationWarning)):
- # SF bug 1563759: struct.unpack doesn't support buffer protocol objects
- data1 = array.array('B', '\x12\x34\x56\x78')
- data2 = buffer('......\x12\x34\x56\x78......', 6, 4)
- for data in [data1, data2]:
- value, = struct.unpack('>I', data)
- self.assertEqual(value, 0x12345678)
-
- self.test_unpack_from(cls=buffer)
-
- def test_unpack_with_memoryview(self):
- # Bug 10212: struct.unpack doesn't support new buffer protocol objects
- data1 = memoryview('\x12\x34\x56\x78')
- for data in [data1,]:
- value, = struct.unpack('>I', data)
- self.assertEqual(value, 0x12345678)
- self.test_unpack_from(cls=memoryview)
-
- def test_bool(self):
- class ExplodingBool(object):
- def __nonzero__(self):
- raise IOError
- for prefix in tuple("<>!=")+('',):
- false = (), [], [], '', 0
- true = [1], 'test', 5, -1, 0xffffffffL+1, 0xffffffff//2
-
- falseFormat = prefix + '?' * len(false)
- packedFalse = struct.pack(falseFormat, *false)
- unpackedFalse = struct.unpack(falseFormat, packedFalse)
-
- trueFormat = prefix + '?' * len(true)
- packedTrue = struct.pack(trueFormat, *true)
- unpackedTrue = struct.unpack(trueFormat, packedTrue)
-
- self.assertEqual(len(true), len(unpackedTrue))
- self.assertEqual(len(false), len(unpackedFalse))
-
- for t in unpackedFalse:
- self.assertFalse(t)
- for t in unpackedTrue:
- self.assertTrue(t)
-
- packed = struct.pack(prefix+'?', 1)
-
- self.assertEqual(len(packed), struct.calcsize(prefix+'?'))
-
- if len(packed) != 1:
- self.assertFalse(prefix, msg='encoded bool is not one byte: %r'
- %packed)
-
- self.assertRaises(IOError, struct.pack, prefix + '?',
- ExplodingBool())
-
- for c in [b'\x01', b'\x7f', b'\xff', b'\x0f', b'\xf0']:
- self.assertTrue(struct.unpack('>?', c)[0])
-
- @unittest.skipUnless(IS32BIT, "Specific to 32bit machines")
- def test_crasher(self):
- self.assertRaises(MemoryError, struct.pack, "357913941c", "a")
-
- def test_count_overflow(self):
- hugecount = '{}b'.format(sys.maxsize+1)
- self.assertRaises(struct.error, struct.calcsize, hugecount)
-
- hugecount2 = '{}b{}H'.format(sys.maxsize//2, sys.maxsize//2)
- self.assertRaises(struct.error, struct.calcsize, hugecount2)
-
- def check_sizeof(self, format_str, number_of_codes):
- # The size of 'PyStructObject'
- totalsize = support.calcobjsize('5P')
- # The size taken up by the 'formatcode' dynamic array
- totalsize += struct.calcsize('3P') * (number_of_codes + 1)
- support.check_sizeof(self, struct.Struct(format_str), totalsize)
-
- @support.cpython_only
- def test__sizeof__(self):
- for code in integer_codes:
- self.check_sizeof(code, 1)
- self.check_sizeof('BHILfdspP', 9)
- self.check_sizeof('B' * 1234, 1234)
- self.check_sizeof('fd', 2)
- self.check_sizeof('xxxxxxxxxxxxxx', 0)
- self.check_sizeof('100H', 100)
- self.check_sizeof('187s', 1)
- self.check_sizeof('20p', 1)
- self.check_sizeof('0s', 1)
- self.check_sizeof('0c', 0)
-
-def test_main():
- support.run_unittest(StructTest)
-
-if __name__ == '__main__':
- test_main()
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