cpython/Lib/test/test_marshal.py
Alex Martelli 01c77c6628 Anna Ravenscroft identified many occurrences of "file" used to open a file
in the stdlib and changed each of them to use "open" instead.  At this
time there are no other known occurrences that can be safely changed (in
Lib and all subdirectories thereof).
2006-08-24 02:58:11 +00:00

233 lines
8.2 KiB
Python
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#!/usr/bin/env python
# -*- coding: iso-8859-1 -*-
from test import test_support
import marshal
import sys
import unittest
import os
class IntTestCase(unittest.TestCase):
def test_ints(self):
# Test the full range of Python ints.
n = sys.maxint
while n:
for expected in (-n, n):
s = marshal.dumps(expected)
got = marshal.loads(s)
self.assertEqual(expected, got)
marshal.dump(expected, open(test_support.TESTFN, "wb"))
got = marshal.load( open(test_support.TESTFN, "rb"))
self.assertEqual(expected, got)
n = n >> 1
os.unlink(test_support.TESTFN)
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):
bytes = []
for i in range(nbytes):
bytes.append(chr(value & 0xff))
value >>= 8
return ''.join(bytes)
maxint64 = (1L << 63) - 1
minint64 = -maxint64-1
for base in maxint64, minint64, -maxint64, -(minint64 >> 1):
while base:
s = '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):
new = marshal.loads(marshal.dumps(b))
self.assertEqual(b, new)
self.assertEqual(type(b), type(new))
marshal.dump(b, open(test_support.TESTFN, "wb"))
new = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(b, new)
self.assertEqual(type(b), type(new))
class FloatTestCase(unittest.TestCase):
def test_floats(self):
# Test a few floats
small = 1e-25
n = sys.maxint * 3.7e250
while n > small:
for expected in (-n, n):
f = float(expected)
s = marshal.dumps(f)
got = marshal.loads(s)
self.assertEqual(f, got)
marshal.dump(f, open(test_support.TESTFN, "wb"))
got = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(f, got)
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.maxint * 3.7e-250
while n < small:
for expected in (-n, n):
f = float(expected)
s = marshal.dumps(f)
got = marshal.loads(s)
self.assertEqual(f, got)
s = marshal.dumps(f, 1)
got = marshal.loads(s)
self.assertEqual(f, got)
marshal.dump(f, open(test_support.TESTFN, "wb"))
got = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(f, got)
marshal.dump(f, open(test_support.TESTFN, "wb"), 1)
got = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(f, got)
n *= 123.4567
os.unlink(test_support.TESTFN)
class StringTestCase(unittest.TestCase):
def test_unicode(self):
for s in [u"", u"Andr<EFBFBD> Previn", u"abc", u" "*10000]:
new = marshal.loads(marshal.dumps(s))
self.assertEqual(s, new)
self.assertEqual(type(s), type(new))
marshal.dump(s, open(test_support.TESTFN, "wb"))
new = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(s, new)
self.assertEqual(type(s), type(new))
os.unlink(test_support.TESTFN)
def test_string(self):
for s in ["", "Andr<EFBFBD> Previn", "abc", " "*10000]:
new = marshal.loads(marshal.dumps(s))
self.assertEqual(s, new)
self.assertEqual(type(s), type(new))
marshal.dump(s, open(test_support.TESTFN, "wb"))
new = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(s, new)
self.assertEqual(type(s), type(new))
os.unlink(test_support.TESTFN)
def test_buffer(self):
for s in ["", "Andr<EFBFBD> Previn", "abc", " "*10000]:
b = buffer(s)
new = marshal.loads(marshal.dumps(b))
self.assertEqual(s, new)
marshal.dump(b, open(test_support.TESTFN, "wb"))
new = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(s, new)
os.unlink(test_support.TESTFN)
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.func_code
new = marshal.loads(marshal.dumps(co))
self.assertEqual(co, new)
class ContainerTestCase(unittest.TestCase):
d = {'astring': 'foo@bar.baz.spam',
'afloat': 7283.43,
'anint': 2**20,
'ashortlong': 2L,
'alist': ['.zyx.41'],
'atuple': ('.zyx.41',)*10,
'aboolean': False,
'aunicode': u"Andr<EFBFBD> Previn"
}
def test_dict(self):
new = marshal.loads(marshal.dumps(self.d))
self.assertEqual(self.d, new)
marshal.dump(self.d, open(test_support.TESTFN, "wb"))
new = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(self.d, new)
os.unlink(test_support.TESTFN)
def test_list(self):
lst = self.d.items()
new = marshal.loads(marshal.dumps(lst))
self.assertEqual(lst, new)
marshal.dump(lst, open(test_support.TESTFN, "wb"))
new = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(lst, new)
os.unlink(test_support.TESTFN)
def test_tuple(self):
t = tuple(self.d.keys())
new = marshal.loads(marshal.dumps(t))
self.assertEqual(t, new)
marshal.dump(t, open(test_support.TESTFN, "wb"))
new = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(t, new)
os.unlink(test_support.TESTFN)
def test_sets(self):
for constructor in (set, frozenset):
t = constructor(self.d.keys())
new = marshal.loads(marshal.dumps(t))
self.assertEqual(t, new)
self.assert_(isinstance(new, constructor))
self.assertNotEqual(id(t), id(new))
marshal.dump(t, open(test_support.TESTFN, "wb"))
new = marshal.load(open(test_support.TESTFN, "rb"))
self.assertEqual(t, new)
os.unlink(test_support.TESTFN)
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(5L)[:-1])
def test_version_argument(self):
# Python 2.4.0 crashes for any call to marshal.dumps(x, y)
self.assertEquals(marshal.loads(marshal.dumps(5, 0)), 5)
self.assertEquals(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_main():
test_support.run_unittest(IntTestCase,
FloatTestCase,
StringTestCase,
CodeTestCase,
ContainerTestCase,
ExceptionTestCase,
BugsTestCase)
if __name__ == "__main__":
test_main()