mirror of https://github.com/python/cpython
243 lines
8.1 KiB
Python
243 lines
8.1 KiB
Python
#!/usr/bin/env python3
|
|
|
|
from test import support
|
|
import marshal
|
|
import sys
|
|
import unittest
|
|
import os
|
|
import types
|
|
|
|
class HelperMixin:
|
|
def helper(self, sample, *extra):
|
|
new = marshal.loads(marshal.dumps(sample, *extra))
|
|
self.assertEqual(sample, new)
|
|
try:
|
|
with open(support.TESTFN, "wb") as f:
|
|
marshal.dump(sample, f, *extra)
|
|
with open(support.TESTFN, "rb") as f:
|
|
new = marshal.load(f)
|
|
self.assertEqual(sample, new)
|
|
finally:
|
|
support.unlink(support.TESTFN)
|
|
|
|
class IntTestCase(unittest.TestCase, HelperMixin):
|
|
def test_ints(self):
|
|
# Test the full range of Python ints.
|
|
n = sys.maxsize
|
|
while n:
|
|
for expected in (-n, n):
|
|
self.helper(expected)
|
|
n = n >> 1
|
|
|
|
def test_int64(self):
|
|
# Simulate int marshaling on a 64-bit box. This is most interesting if
|
|
# we're running the test on a 32-bit box, of course.
|
|
|
|
def to_little_endian_string(value, nbytes):
|
|
b = bytearray()
|
|
for i in range(nbytes):
|
|
b.append(value & 0xff)
|
|
value >>= 8
|
|
return b
|
|
|
|
maxint64 = (1 << 63) - 1
|
|
minint64 = -maxint64-1
|
|
|
|
for base in maxint64, minint64, -maxint64, -(minint64 >> 1):
|
|
while base:
|
|
s = b'I' + to_little_endian_string(base, 8)
|
|
got = marshal.loads(s)
|
|
self.assertEqual(base, got)
|
|
if base == -1: # a fixed-point for shifting right 1
|
|
base = 0
|
|
else:
|
|
base >>= 1
|
|
|
|
def test_bool(self):
|
|
for b in (True, False):
|
|
self.helper(b)
|
|
|
|
class FloatTestCase(unittest.TestCase, HelperMixin):
|
|
def test_floats(self):
|
|
# Test a few floats
|
|
small = 1e-25
|
|
n = sys.maxsize * 3.7e250
|
|
while n > small:
|
|
for expected in (-n, n):
|
|
self.helper(float(expected))
|
|
n /= 123.4567
|
|
|
|
f = 0.0
|
|
s = marshal.dumps(f, 2)
|
|
got = marshal.loads(s)
|
|
self.assertEqual(f, got)
|
|
# and with version <= 1 (floats marshalled differently then)
|
|
s = marshal.dumps(f, 1)
|
|
got = marshal.loads(s)
|
|
self.assertEqual(f, got)
|
|
|
|
n = sys.maxsize * 3.7e-250
|
|
while n < small:
|
|
for expected in (-n, n):
|
|
f = float(expected)
|
|
self.helper(f)
|
|
self.helper(f, 1)
|
|
n *= 123.4567
|
|
|
|
class StringTestCase(unittest.TestCase, HelperMixin):
|
|
def test_unicode(self):
|
|
for s in ["", "Andr\xe8 Previn", "abc", " "*10000]:
|
|
self.helper(marshal.loads(marshal.dumps(s)))
|
|
|
|
def test_string(self):
|
|
for s in ["", "Andr\xe8 Previn", "abc", " "*10000]:
|
|
self.helper(s)
|
|
|
|
def test_bytes(self):
|
|
for s in [b"", b"Andr\xe8 Previn", b"abc", b" "*10000]:
|
|
self.helper(s)
|
|
|
|
class ExceptionTestCase(unittest.TestCase):
|
|
def test_exceptions(self):
|
|
new = marshal.loads(marshal.dumps(StopIteration))
|
|
self.assertEqual(StopIteration, new)
|
|
|
|
class CodeTestCase(unittest.TestCase):
|
|
def test_code(self):
|
|
co = ExceptionTestCase.test_exceptions.__code__
|
|
new = marshal.loads(marshal.dumps(co))
|
|
self.assertEqual(co, new)
|
|
|
|
def test_many_codeobjects(self):
|
|
# Issue2957: bad recursion count on code objects
|
|
count = 5000 # more than MAX_MARSHAL_STACK_DEPTH
|
|
codes = (ExceptionTestCase.test_exceptions.__code__,) * count
|
|
marshal.loads(marshal.dumps(codes))
|
|
|
|
def test_different_filenames(self):
|
|
co1 = compile("x", "f1", "exec")
|
|
co2 = compile("y", "f2", "exec")
|
|
co1, co2 = marshal.loads(marshal.dumps((co1, co2)))
|
|
self.assertEqual(co1.co_filename, "f1")
|
|
self.assertEqual(co2.co_filename, "f2")
|
|
|
|
@support.cpython_only
|
|
def test_same_filename_used(self):
|
|
s = """def f(): pass\ndef g(): pass"""
|
|
co = compile(s, "myfile", "exec")
|
|
co = marshal.loads(marshal.dumps(co))
|
|
for obj in co.co_consts:
|
|
if isinstance(obj, types.CodeType):
|
|
self.assertIs(co.co_filename, obj.co_filename)
|
|
|
|
class ContainerTestCase(unittest.TestCase, HelperMixin):
|
|
d = {'astring': 'foo@bar.baz.spam',
|
|
'afloat': 7283.43,
|
|
'anint': 2**20,
|
|
'ashortlong': 2,
|
|
'alist': ['.zyx.41'],
|
|
'atuple': ('.zyx.41',)*10,
|
|
'aboolean': False,
|
|
'aunicode': "Andr\xe8 Previn"
|
|
}
|
|
|
|
def test_dict(self):
|
|
self.helper(self.d)
|
|
|
|
def test_list(self):
|
|
self.helper(list(self.d.items()))
|
|
|
|
def test_tuple(self):
|
|
self.helper(tuple(self.d.keys()))
|
|
|
|
def test_sets(self):
|
|
for constructor in (set, frozenset):
|
|
self.helper(constructor(self.d.keys()))
|
|
|
|
class BugsTestCase(unittest.TestCase):
|
|
def test_bug_5888452(self):
|
|
# Simple-minded check for SF 588452: Debug build crashes
|
|
marshal.dumps([128] * 1000)
|
|
|
|
def test_patch_873224(self):
|
|
self.assertRaises(Exception, marshal.loads, '0')
|
|
self.assertRaises(Exception, marshal.loads, 'f')
|
|
self.assertRaises(Exception, marshal.loads, marshal.dumps(2**65)[:-1])
|
|
|
|
def test_version_argument(self):
|
|
# Python 2.4.0 crashes for any call to marshal.dumps(x, y)
|
|
self.assertEqual(marshal.loads(marshal.dumps(5, 0)), 5)
|
|
self.assertEqual(marshal.loads(marshal.dumps(5, 1)), 5)
|
|
|
|
def test_fuzz(self):
|
|
# simple test that it's at least not *totally* trivial to
|
|
# crash from bad marshal data
|
|
for c in [chr(i) for i in range(256)]:
|
|
try:
|
|
marshal.loads(c)
|
|
except Exception:
|
|
pass
|
|
|
|
def test_loads_recursion(self):
|
|
s = 'c' + ('X' * 4*4) + '{' * 2**20
|
|
self.assertRaises(ValueError, marshal.loads, s)
|
|
|
|
def test_recursion_limit(self):
|
|
# Create a deeply nested structure.
|
|
head = last = []
|
|
# The max stack depth should match the value in Python/marshal.c.
|
|
if os.name == 'nt' and hasattr(sys, 'gettotalrefcount'):
|
|
MAX_MARSHAL_STACK_DEPTH = 1500
|
|
else:
|
|
MAX_MARSHAL_STACK_DEPTH = 2000
|
|
for i in range(MAX_MARSHAL_STACK_DEPTH - 2):
|
|
last.append([0])
|
|
last = last[-1]
|
|
|
|
# Verify we don't blow out the stack with dumps/load.
|
|
data = marshal.dumps(head)
|
|
new_head = marshal.loads(data)
|
|
# Don't use == to compare objects, it can exceed the recursion limit.
|
|
self.assertEqual(len(new_head), len(head))
|
|
self.assertEqual(len(new_head[0]), len(head[0]))
|
|
self.assertEqual(len(new_head[-1]), len(head[-1]))
|
|
|
|
last.append([0])
|
|
self.assertRaises(ValueError, marshal.dumps, head)
|
|
|
|
def test_exact_type_match(self):
|
|
# Former bug:
|
|
# >>> class Int(int): pass
|
|
# >>> type(loads(dumps(Int())))
|
|
# <type 'int'>
|
|
for typ in (int, float, complex, tuple, list, dict, set, frozenset):
|
|
# Note: str subclasses are not tested because they get handled
|
|
# by marshal's routines for objects supporting the buffer API.
|
|
subtyp = type('subtyp', (typ,), {})
|
|
self.assertRaises(ValueError, marshal.dumps, subtyp())
|
|
|
|
# Issue #1792 introduced a change in how marshal increases the size of its
|
|
# internal buffer; this test ensures that the new code is exercised.
|
|
def test_large_marshal(self):
|
|
size = int(1e6)
|
|
testString = 'abc' * size
|
|
marshal.dumps(testString)
|
|
|
|
def test_invalid_longs(self):
|
|
# Issue #7019: marshal.loads shouldn't produce unnormalized PyLongs
|
|
invalid_string = b'l\x02\x00\x00\x00\x00\x00\x00\x00'
|
|
self.assertRaises(ValueError, marshal.loads, invalid_string)
|
|
|
|
|
|
def test_main():
|
|
support.run_unittest(IntTestCase,
|
|
FloatTestCase,
|
|
StringTestCase,
|
|
CodeTestCase,
|
|
ContainerTestCase,
|
|
ExceptionTestCase,
|
|
BugsTestCase)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|