1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235
|
import mmap
import struct
import sys
import unittest
from macholib import ptypes
if sys.version_info[:2] <= (2, 6):
import unittest2 as unittest
else:
import unittest
try:
from io import BytesIO
except ImportError:
from cStringIO import StringIO as BytesIO
try:
long
except NameError:
long = int
class TestPTypes(unittest.TestCase):
if not hasattr(unittest.TestCase, "assertIsSubclass"):
def assertIsSubclass(self, class1, class2, message=None):
self.assertTrue(
issubclass(class1, class2),
message or "%r is not a subclass of %r" % (class1, class2),
)
if not hasattr(unittest.TestCase, "assertIsInstance"):
def assertIsInstance(self, value, types, message=None):
self.assertTrue(
isinstance(value, types),
message or "%r is not an instance of %r" % (value, types),
)
def test_sizeof(self):
self.assertEqual(ptypes.sizeof(b"foobar"), 6)
self.assertRaises(ValueError, ptypes.sizeof, [])
self.assertRaises(ValueError, ptypes.sizeof, {})
self.assertRaises(ValueError, ptypes.sizeof, b"foo".decode("ascii"))
class M(object):
pass
m = M()
m._size_ = 42
self.assertEqual(ptypes.sizeof(m), 42)
def verifyType(self, ptype, size, pytype, values):
self.assertEqual(ptypes.sizeof(ptype), size)
self.assertIsSubclass(ptype, pytype)
for v in values:
pv = ptype(v)
packed = pv.to_str()
self.assertIsInstance(packed, bytes)
self.assertEqual(len(packed), size)
unp = ptype.from_str(packed)
self.assertIsInstance(unp, ptype)
self.assertEqual(unp, pv)
fp = BytesIO(packed)
unp = ptype.from_fileobj(fp)
fp.close()
self.assertIsInstance(unp, ptype)
self.assertEqual(unp, pv)
fp = BytesIO()
pv.to_fileobj(fp)
data = fp.getvalue()
fp.close()
self.assertEqual(data, packed)
mm = mmap.mmap(-1, size + 20)
mm[:] = b"\x00" * (size + 20)
pv.to_mmap(mm, 10)
self.assertEqual(ptype.from_mmap(mm, 10), pv)
self.assertEqual(mm[:], (b"\x00" * 10) + packed + (b"\x00" * 10))
self.assertEqual(ptype.from_tuple((v,)), pv)
def test_basic_types(self):
self.verifyType(ptypes.p_char, 1, bytes, [b"a", b"b"])
self.verifyType(ptypes.p_int8, 1, int, [1, 42, -4])
self.verifyType(ptypes.p_uint8, 1, int, [1, 42, 253])
self.verifyType(ptypes.p_int16, 2, int, [1, 400, -10, -5000])
self.verifyType(ptypes.p_uint16, 2, int, [1, 400, 65000])
self.verifyType(
ptypes.p_int32, 4, int, [1, 400, 2**24, -10, -5000, -(2**24)]
)
self.verifyType(ptypes.p_uint32, 4, long, [1, 400, 2 * 31 + 5, 65000])
self.verifyType(
ptypes.p_int64, 8, long, [1, 400, 2**43, -10, -5000, -(2**43)]
)
self.verifyType(ptypes.p_uint64, 8, long, [1, 400, 2 * 63 + 5, 65000])
self.verifyType(ptypes.p_float, 4, float, [1.0, 42.5])
self.verifyType(ptypes.p_double, 8, float, [1.0, 42.5])
def test_basic_types_deprecated(self):
self.verifyType(ptypes.p_byte, 1, int, [1, 42, -4])
self.verifyType(ptypes.p_ubyte, 1, int, [1, 42, 253])
self.verifyType(ptypes.p_short, 2, int, [1, 400, -10, -5000])
self.verifyType(ptypes.p_ushort, 2, int, [1, 400, 65000])
self.verifyType(ptypes.p_int, 4, int, [1, 400, 2**24, -10, -5000, -(2**24)])
self.verifyType(ptypes.p_uint, 4, long, [1, 400, 2 * 31 + 5, 65000])
self.verifyType(
ptypes.p_long, 4, int, [1, 400, 2**24, -10, -5000, -(2**24)]
)
self.verifyType(ptypes.p_ulong, 4, long, [1, 400, 2 * 31 + 5, 65000])
self.verifyType(
ptypes.p_longlong, 8, long, [1, 400, 2**43, -10, -5000, -(2**43)]
)
self.verifyType(ptypes.p_ulonglong, 8, long, [1, 400, 2 * 63 + 5, 65000])
class TestPTypesPrivate(unittest.TestCase):
# These are tests for functions that aren't part of the public
# API.
def test_formatinfo(self):
self.assertEqual(ptypes._formatinfo(">b"), (1, 1))
self.assertEqual(ptypes._formatinfo(">h"), (2, 1))
self.assertEqual(ptypes._formatinfo(">HhL"), (8, 3))
self.assertEqual(ptypes._formatinfo("<b"), (1, 1))
self.assertEqual(ptypes._formatinfo("<h"), (2, 1))
self.assertEqual(ptypes._formatinfo("<HhL"), (8, 3))
class MyStructure(ptypes.Structure):
_fields_ = (("foo", ptypes.p_int32), ("bar", ptypes.p_uint8))
class MyFunStructure(ptypes.Structure):
_fields_ = (("fun", ptypes.p_char), ("mystruct", MyStructure))
class TestPTypesSimple(unittest.TestCase):
# Quick port of tests that used to be part of
# the macholib.ptypes source code
#
# Moving these in a structured manner to TestPTypes
# would be nice, but is not extremely important.
if not hasattr(unittest.TestCase, "subTest"):
def subTest(self, msg, **kw):
class STHelper(object):
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
return False
return STHelper()
def testBasic(self):
for endian in "><":
kw = dict(_endian_=endian)
MYSTRUCTURE = b"\x00\x01\x02\x03\xFF"
for fn, args in [
("from_str", (MYSTRUCTURE,)),
("from_mmap", (MYSTRUCTURE, 0)),
("from_fileobj", (BytesIO(MYSTRUCTURE),)),
]:
with self.subTest("MYSTRUCTURE", endian=endian, fn=fn):
myStructure = getattr(MyStructure, fn)(*args, **kw)
if endian == ">":
self.assertEqual(myStructure.foo, 0x00010203)
else:
self.assertEqual(myStructure.foo, 0x03020100)
self.assertEqual(myStructure.bar, 0xFF)
self.assertEqual(myStructure._endian_, endian)
self.assertEqual(myStructure.to_str(), MYSTRUCTURE)
MYFUNSTRUCTURE = b"!" + MYSTRUCTURE
for fn, args in [
("from_str", (MYFUNSTRUCTURE,)),
("from_mmap", (MYFUNSTRUCTURE, 0)),
("from_fileobj", (BytesIO(MYFUNSTRUCTURE),)),
]:
with self.subTest("MYFUNSTRUCTURE", fn=fn):
myFunStructure = getattr(MyFunStructure, fn)(*args, **kw)
self.assertEqual(myFunStructure.mystruct, myStructure)
self.assertEqual(
myFunStructure.fun, b"!", (myFunStructure.fun, b"!")
)
self.assertEqual(myFunStructure.to_str(), MYFUNSTRUCTURE)
sio = BytesIO()
myFunStructure.to_fileobj(sio)
self.assertEqual(sio.getvalue(), MYFUNSTRUCTURE)
mm = mmap.mmap(-1, ptypes.sizeof(MyFunStructure) * 2)
mm[:] = b"\x00" * (ptypes.sizeof(MyFunStructure) * 2)
myFunStructure.to_mmap(mm, 0)
self.assertEqual(MyFunStructure.from_mmap(mm, 0, **kw), myFunStructure)
self.assertEqual(mm[: ptypes.sizeof(MyFunStructure)], MYFUNSTRUCTURE)
self.assertEqual(
mm[ptypes.sizeof(MyFunStructure) :],
b"\x00" * ptypes.sizeof(MyFunStructure),
)
myFunStructure.to_mmap(mm, ptypes.sizeof(MyFunStructure))
self.assertEqual(mm[:], MYFUNSTRUCTURE + MYFUNSTRUCTURE)
self.assertEqual(
MyFunStructure.from_mmap(mm, ptypes.sizeof(MyFunStructure), **kw),
myFunStructure,
)
def test_issue14(self):
raw = b"\x01\x00\x00\x00\x00\x00\x00\x00"
v = ptypes.p_uint64.from_str(raw, _endian_="<")
self.assertEqual(v, struct.unpack("<q", raw)[0])
v = ptypes.p_uint64.from_str(raw, _endian_=">")
self.assertEqual(v, struct.unpack(">q", raw)[0])
if __name__ == "__main__":
unittest.main()
|