1 #!/usr/bin/env python

     2 # -*- coding: iso-8859-1 -*-

     3 

     4 from test import test_support

     5 import marshal

     6 import sys

     7 import unittest

     8 import os

     9 

    10 class IntTestCase(unittest.TestCase):

    11     def test_ints(self):

    12         # Test the full range of Python ints.

    13         n = sys.maxint

    14         while n:

    15             for expected in (-n, n):

    16                 s = marshal.dumps(expected)

    17                 got = marshal.loads(s)

    18                 self.assertEqual(expected, got)

    19                 marshal.dump(expected, file(test_support.TESTFN, "wb"))

    20                 got = marshal.load(file(test_support.TESTFN, "rb"))

    21                 self.assertEqual(expected, got)

    22             n = n >> 1

    23         os.unlink(test_support.TESTFN)

    24 

    25     def test_int64(self):

    26         # Simulate int marshaling on a 64-bit box.  This is most interesting if

    27         # we're running the test on a 32-bit box, of course.

    28 

    29         def to_little_endian_string(value, nbytes):

    30             bytes = []

    31             for i in range(nbytes):

    32                 bytes.append(chr(value & 0xff))

    33                 value >>= 8

    34             return ''.join(bytes)

    35 

    36         maxint64 = (1L << 63) - 1

    37         minint64 = -maxint64-1

    38 

    39         for base in maxint64, minint64, -maxint64, -(minint64 >> 1):

    40             while base:

    41                 s = 'I' + to_little_endian_string(base, 8)

    42                 got = marshal.loads(s)

    43                 self.assertEqual(base, got)

    44                 if base == -1:  # a fixed-point for shifting right 1

    45                     base = 0

    46                 else:

    47                     base >>= 1

    48 

    49     def test_bool(self):

    50         for b in (True, False):

    51             new = marshal.loads(marshal.dumps(b))

    52             self.assertEqual(b, new)

    53             self.assertEqual(type(b), type(new))

    54             marshal.dump(b, file(test_support.TESTFN, "wb"))

    55             new = marshal.load(file(test_support.TESTFN, "rb"))

    56             self.assertEqual(b, new)

    57             self.assertEqual(type(b), type(new))

    58 

    59 class FloatTestCase(unittest.TestCase):

    60     def test_floats(self):

    61         # Test a few floats

    62         small = 1e-25

    63         n = sys.maxint * 3.7e250

    64         while n > small:

    65             for expected in (-n, n):

    66                 f = float(expected)

    67                 s = marshal.dumps(f)

    68                 got = marshal.loads(s)

    69                 self.assertEqual(f, got)

    70                 marshal.dump(f, file(test_support.TESTFN, "wb"))

    71                 got = marshal.load(file(test_support.TESTFN, "rb"))

    72                 self.assertEqual(f, got)

    73             n /= 123.4567

    74 

    75         f = 0.0

    76         s = marshal.dumps(f, 2)

    77         got = marshal.loads(s)

    78         self.assertEqual(f, got)

    79         # and with version <= 1 (floats marshalled differently then)

    80         s = marshal.dumps(f, 1)

    81         got = marshal.loads(s)

    82         self.assertEqual(f, got)

    83 

    84         n = sys.maxint * 3.7e-250

    85         while n < small:

    86             for expected in (-n, n):

    87                 f = float(expected)

    88 

    89                 s = marshal.dumps(f)

    90                 got = marshal.loads(s)

    91                 self.assertEqual(f, got)

    92 

    93                 s = marshal.dumps(f, 1)

    94                 got = marshal.loads(s)

    95                 self.assertEqual(f, got)

    96 

    97                 marshal.dump(f, file(test_support.TESTFN, "wb"))

    98                 got = marshal.load(file(test_support.TESTFN, "rb"))

    99                 self.assertEqual(f, got)

   100 

   101                 marshal.dump(f, file(test_support.TESTFN, "wb"), 1)

   102                 got = marshal.load(file(test_support.TESTFN, "rb"))

   103                 self.assertEqual(f, got)

   104             n *= 123.4567

   105         os.unlink(test_support.TESTFN)

   106 

   107 class StringTestCase(unittest.TestCase):

   108     def test_unicode(self):

   109         for s in [u"", u"Andrč Previn", u"abc", u" "*10000]:

   110             new = marshal.loads(marshal.dumps(s))

   111             self.assertEqual(s, new)

   112             self.assertEqual(type(s), type(new))

   113             marshal.dump(s, file(test_support.TESTFN, "wb"))

   114             new = marshal.load(file(test_support.TESTFN, "rb"))

   115             self.assertEqual(s, new)

   116             self.assertEqual(type(s), type(new))

   117         os.unlink(test_support.TESTFN)

   118 

   119     def test_string(self):

   120         for s in ["", "Andrč Previn", "abc", " "*10000]:

   121             new = marshal.loads(marshal.dumps(s))

   122             self.assertEqual(s, new)

   123             self.assertEqual(type(s), type(new))

   124             marshal.dump(s, file(test_support.TESTFN, "wb"))

   125             new = marshal.load(file(test_support.TESTFN, "rb"))

   126             self.assertEqual(s, new)

   127             self.assertEqual(type(s), type(new))

   128         os.unlink(test_support.TESTFN)

   129 

   130     def test_buffer(self):

   131         for s in ["", "Andrč Previn", "abc", " "*10000]:

   132             b = buffer(s)

   133             new = marshal.loads(marshal.dumps(b))

   134             self.assertEqual(s, new)

   135             marshal.dump(b, file(test_support.TESTFN, "wb"))

   136             new = marshal.load(file(test_support.TESTFN, "rb"))

   137             self.assertEqual(s, new)

   138         os.unlink(test_support.TESTFN)

   139 

   140 class ExceptionTestCase(unittest.TestCase):

   141     def test_exceptions(self):

   142         new = marshal.loads(marshal.dumps(StopIteration))

   143         self.assertEqual(StopIteration, new)

   144 

   145 class CodeTestCase(unittest.TestCase):

   146     def test_code(self):

   147         co = ExceptionTestCase.test_exceptions.func_code

   148         new = marshal.loads(marshal.dumps(co))

   149         self.assertEqual(co, new)

   150 

   151 class ContainerTestCase(unittest.TestCase):

   152     d = {'astring': 'foo@bar.baz.spam',

   153          'afloat': 7283.43,

   154          'anint': 2**20,

   155          'ashortlong': 2L,

   156          'alist': ['.zyx.41'],

   157          'atuple': ('.zyx.41',)*10,

   158          'aboolean': False,

   159          'aunicode': u"Andrč Previn"

   160          }

   161     def test_dict(self):

   162         new = marshal.loads(marshal.dumps(self.d))

   163         self.assertEqual(self.d, new)

   164         marshal.dump(self.d, file(test_support.TESTFN, "wb"))

   165         new = marshal.load(file(test_support.TESTFN, "rb"))

   166         self.assertEqual(self.d, new)

   167         os.unlink(test_support.TESTFN)

   168 

   169     def test_list(self):

   170         lst = self.d.items()

   171         new = marshal.loads(marshal.dumps(lst))

   172         self.assertEqual(lst, new)

   173         marshal.dump(lst, file(test_support.TESTFN, "wb"))

   174         new = marshal.load(file(test_support.TESTFN, "rb"))

   175         self.assertEqual(lst, new)

   176         os.unlink(test_support.TESTFN)

   177 

   178     def test_tuple(self):

   179         t = tuple(self.d.keys())

   180         new = marshal.loads(marshal.dumps(t))

   181         self.assertEqual(t, new)

   182         marshal.dump(t, file(test_support.TESTFN, "wb"))

   183         new = marshal.load(file(test_support.TESTFN, "rb"))

   184         self.assertEqual(t, new)

   185         os.unlink(test_support.TESTFN)

   186 

   187     def test_sets(self):

   188         for constructor in (set, frozenset):

   189             t = constructor(self.d.keys())

   190             new = marshal.loads(marshal.dumps(t))

   191             self.assertEqual(t, new)

   192             self.assert_(isinstance(new, constructor))

   193             self.assertNotEqual(id(t), id(new))

   194             marshal.dump(t, file(test_support.TESTFN, "wb"))

   195             new = marshal.load(file(test_support.TESTFN, "rb"))

   196             self.assertEqual(t, new)

   197             os.unlink(test_support.TESTFN)

   198 

   199 class BugsTestCase(unittest.TestCase):

   200     def test_bug_5888452(self):

   201         # Simple-minded check for SF 588452: Debug build crashes

   202         marshal.dumps([128] * 1000)

   203 

   204     def test_patch_873224(self):

   205         self.assertRaises(Exception, marshal.loads, '0')

   206         self.assertRaises(Exception, marshal.loads, 'f')

   207         self.assertRaises(Exception, marshal.loads, marshal.dumps(5L)[:-1])

   208 

   209     def test_version_argument(self):

   210         # Python 2.4.0 crashes for any call to marshal.dumps(x, y)

   211         self.assertEquals(marshal.loads(marshal.dumps(5, 0)), 5)

   212         self.assertEquals(marshal.loads(marshal.dumps(5, 1)), 5)

   213 

   214     def test_fuzz(self):

   215         # simple test that it's at least not *totally* trivial to

   216         # crash from bad marshal data

   217         for c in [chr(i) for i in range(256)]:

   218             try:

   219                 marshal.loads(c)

   220             except Exception:

   221                 pass

   222 

   223     def test_loads_recursion(self):

   224         s = 'c' + ('X' * 4*4) + '{' * 2**20

   225         self.assertRaises(ValueError, marshal.loads, s)

   226 

   227     def test_recursion_limit(self):

   228         # Create a deeply nested structure.

   229         head = last = []

   230         # The max stack depth should match the value in Python/marshal.c.

   231         MAX_MARSHAL_STACK_DEPTH = 2000

   232         for i in range(MAX_MARSHAL_STACK_DEPTH - 2):

   233             last.append([0])

   234             last = last[-1]

   235 

   236         # Verify we don't blow out the stack with dumps/load.

   237         data = marshal.dumps(head)

   238         new_head = marshal.loads(data)

   239         # Don't use == to compare objects, it can exceed the recursion limit.

   240         self.assertEqual(len(new_head), len(head))

   241         self.assertEqual(len(new_head[0]), len(head[0]))

   242         self.assertEqual(len(new_head[-1]), len(head[-1]))

   243 

   244         last.append([0])

   245         self.assertRaises(ValueError, marshal.dumps, head)

   246 

   247 def test_main():

   248     test_support.run_unittest(IntTestCase,

   249                               FloatTestCase,

   250                               StringTestCase,

   251                               CodeTestCase,

   252                               ContainerTestCase,

   253                               ExceptionTestCase,

   254                               BugsTestCase)

   255 

   256 if __name__ == "__main__":

   257     test_main()