source: trunk/essentials/dev-lang/python/Lib/test/test_marshal.py@ 3226

Last change on this file since 3226 was 3225, checked in by bird, 19 years ago

Python 2.5
File size: 8.2 KB
Line 
1#!/usr/bin/env python
2# -*- coding: iso-8859-1 -*-
3
4from test import test_support
5import marshal
6import sys
7import unittest
8import os
9
10class 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
59class 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
107class StringTestCase(unittest.TestCase):
108 def test_unicode(self):
109 for s in [u"", u"Andrè 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 ["", "Andrè 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 ["", "Andrè 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
140class ExceptionTestCase(unittest.TestCase):
141 def test_exceptions(self):
142 new = marshal.loads(marshal.dumps(StopIteration))
143 self.assertEqual(StopIteration, new)
144
145class 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
151class ContainerTestCase(unittest.TestCase):
152 d = {'astring': '[email protected]',
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"Andrè 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
199class 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
223def test_main():
224 test_support.run_unittest(IntTestCase,
225 FloatTestCase,
226 StringTestCase,
227 CodeTestCase,
228 ContainerTestCase,
229 ExceptionTestCase,
230 BugsTestCase)