Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_marshal.py @ 54294:dba767bc3155 legacy-trunk

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remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents 4fb6c0c169ff
children 9130fe9c58bf 6768b2350c57
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python
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2 # -*- coding: iso-8859-1 -*-
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3
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4 from test import test_support
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5 import marshal
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6 import sys
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7 import unittest
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8 import os
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9
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10 class IntTestCase(unittest.TestCase):
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11 def test_ints(self):
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12 # Test the full range of Python ints.
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13 n = sys.maxint
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14 while n:
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15 for expected in (-n, n):
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16 s = marshal.dumps(expected)
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17 got = marshal.loads(s)
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18 self.assertEqual(expected, got)
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19 marshal.dump(expected, file(test_support.TESTFN, "wb"))
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20 got = marshal.load(file(test_support.TESTFN, "rb"))
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21 self.assertEqual(expected, got)
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22 n = n >> 1
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23 os.unlink(test_support.TESTFN)
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24
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25 def test_int64(self):
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26 # Simulate int marshaling on a 64-bit box. This is most interesting if
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27 # we're running the test on a 32-bit box, of course.
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28
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29 def to_little_endian_string(value, nbytes):
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30 bytes = []
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31 for i in range(nbytes):
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32 bytes.append(chr(value & 0xff))
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33 value >>= 8
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34 return ''.join(bytes)
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35
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36 maxint64 = (1L << 63) - 1
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37 minint64 = -maxint64-1
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38
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39 for base in maxint64, minint64, -maxint64, -(minint64 >> 1):
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40 while base:
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41 s = 'I' + to_little_endian_string(base, 8)
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42 got = marshal.loads(s)
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43 self.assertEqual(base, got)
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44 if base == -1: # a fixed-point for shifting right 1
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45 base = 0
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46 else:
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47 base >>= 1
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48
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49 def test_bool(self):
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50 for b in (True, False):
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51 new = marshal.loads(marshal.dumps(b))
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52 self.assertEqual(b, new)
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53 self.assertEqual(type(b), type(new))
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54 marshal.dump(b, file(test_support.TESTFN, "wb"))
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55 new = marshal.load(file(test_support.TESTFN, "rb"))
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56 self.assertEqual(b, new)
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57 self.assertEqual(type(b), type(new))
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58
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59 class FloatTestCase(unittest.TestCase):
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60 def test_floats(self):
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61 # Test a few floats
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62 small = 1e-25
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63 n = sys.maxint * 3.7e250
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64 while n > small:
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65 for expected in (-n, n):
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66 f = float(expected)
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67 s = marshal.dumps(f)
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68 got = marshal.loads(s)
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69 self.assertEqual(f, got)
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70 marshal.dump(f, file(test_support.TESTFN, "wb"))
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71 got = marshal.load(file(test_support.TESTFN, "rb"))
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72 self.assertEqual(f, got)
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73 n /= 123.4567
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74
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75 f = 0.0
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76 s = marshal.dumps(f, 2)
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77 got = marshal.loads(s)
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78 self.assertEqual(f, got)
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79 # and with version <= 1 (floats marshalled differently then)
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80 s = marshal.dumps(f, 1)
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81 got = marshal.loads(s)
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82 self.assertEqual(f, got)
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83
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84 n = sys.maxint * 3.7e-250
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85 while n < small:
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86 for expected in (-n, n):
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87 f = float(expected)
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88
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89 s = marshal.dumps(f)
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90 got = marshal.loads(s)
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91 self.assertEqual(f, got)
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92
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93 s = marshal.dumps(f, 1)
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94 got = marshal.loads(s)
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95 self.assertEqual(f, got)
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96
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97 marshal.dump(f, file(test_support.TESTFN, "wb"))
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98 got = marshal.load(file(test_support.TESTFN, "rb"))
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99 self.assertEqual(f, got)
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100
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101 marshal.dump(f, file(test_support.TESTFN, "wb"), 1)
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102 got = marshal.load(file(test_support.TESTFN, "rb"))
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103 self.assertEqual(f, got)
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104 n *= 123.4567
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105 os.unlink(test_support.TESTFN)
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106
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107 class StringTestCase(unittest.TestCase):
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108 def test_unicode(self):
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109 for s in [u"", u"Andrè Previn", u"abc", u" "*10000]:
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110 new = marshal.loads(marshal.dumps(s))
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111 self.assertEqual(s, new)
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112 self.assertEqual(type(s), type(new))
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113 marshal.dump(s, file(test_support.TESTFN, "wb"))
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114 new = marshal.load(file(test_support.TESTFN, "rb"))
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115 self.assertEqual(s, new)
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116 self.assertEqual(type(s), type(new))
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117 os.unlink(test_support.TESTFN)
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118
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119 def test_string(self):
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120 for s in ["", "Andrè Previn", "abc", " "*10000]:
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121 new = marshal.loads(marshal.dumps(s))
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122 self.assertEqual(s, new)
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123 self.assertEqual(type(s), type(new))
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124 marshal.dump(s, file(test_support.TESTFN, "wb"))
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125 new = marshal.load(file(test_support.TESTFN, "rb"))
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126 self.assertEqual(s, new)
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127 self.assertEqual(type(s), type(new))
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128 os.unlink(test_support.TESTFN)
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129
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130 def test_buffer(self):
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131 for s in ["", "Andrè Previn", "abc", " "*10000]:
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132 b = buffer(s)
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133 new = marshal.loads(marshal.dumps(b))
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134 self.assertEqual(s, new)
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135 marshal.dump(b, file(test_support.TESTFN, "wb"))
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136 new = marshal.load(file(test_support.TESTFN, "rb"))
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137 self.assertEqual(s, new)
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138 os.unlink(test_support.TESTFN)
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139
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140 class ExceptionTestCase(unittest.TestCase):
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141 def test_exceptions(self):
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142 new = marshal.loads(marshal.dumps(StopIteration))
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143 self.assertEqual(StopIteration, new)
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144
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145 class CodeTestCase(unittest.TestCase):
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146 def test_code(self):
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147 co = ExceptionTestCase.test_exceptions.func_code
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148 new = marshal.loads(marshal.dumps(co))
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149 self.assertEqual(co, new)
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parents:
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150
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151 class ContainerTestCase(unittest.TestCase):
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152 d = {'astring': 'foo@bar.baz.spam',
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153 'afloat': 7283.43,
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154 'anint': 2**20,
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155 'ashortlong': 2L,
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156 'alist': ['.zyx.41'],
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157 'atuple': ('.zyx.41',)*10,
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158 'aboolean': False,
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159 'aunicode': u"Andrè Previn"
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160 }
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161 def test_dict(self):
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162 new = marshal.loads(marshal.dumps(self.d))
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163 self.assertEqual(self.d, new)
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164 marshal.dump(self.d, file(test_support.TESTFN, "wb"))
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165 new = marshal.load(file(test_support.TESTFN, "rb"))
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166 self.assertEqual(self.d, new)
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167 os.unlink(test_support.TESTFN)
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168
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169 def test_list(self):
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170 lst = self.d.items()
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171 new = marshal.loads(marshal.dumps(lst))
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172 self.assertEqual(lst, new)
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173 marshal.dump(lst, file(test_support.TESTFN, "wb"))
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174 new = marshal.load(file(test_support.TESTFN, "rb"))
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175 self.assertEqual(lst, new)
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176 os.unlink(test_support.TESTFN)
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177
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178 def test_tuple(self):
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179 t = tuple(self.d.keys())
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180 new = marshal.loads(marshal.dumps(t))
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181 self.assertEqual(t, new)
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182 marshal.dump(t, file(test_support.TESTFN, "wb"))
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diff changeset
183 new = marshal.load(file(test_support.TESTFN, "rb"))
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184 self.assertEqual(t, new)
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185 os.unlink(test_support.TESTFN)
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186
34394
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187 def test_sets(self):
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188 for constructor in (set, frozenset):
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189 t = constructor(self.d.keys())
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190 new = marshal.loads(marshal.dumps(t))
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Raymond Hettinger <python@rcn.com>
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diff changeset
191 self.assertEqual(t, new)
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192 self.assert_(isinstance(new, constructor))
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193 self.assertNotEqual(id(t), id(new))
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194 marshal.dump(t, file(test_support.TESTFN, "wb"))
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195 new = marshal.load(file(test_support.TESTFN, "rb"))
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196 self.assertEqual(t, new)
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197 os.unlink(test_support.TESTFN)
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198
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199 class BugsTestCase(unittest.TestCase):
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200 def test_bug_5888452(self):
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201 # Simple-minded check for SF 588452: Debug build crashes
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202 marshal.dumps([128] * 1000)
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203
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204 def test_patch_873224(self):
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205 self.assertRaises(Exception, marshal.loads, '0')
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206 self.assertRaises(Exception, marshal.loads, 'f')
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207 self.assertRaises(Exception, marshal.loads, marshal.dumps(5L)[:-1])
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208
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209 def test_version_argument(self):
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210 # Python 2.4.0 crashes for any call to marshal.dumps(x, y)
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211 self.assertEquals(marshal.loads(marshal.dumps(5, 0)), 5)
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212 self.assertEquals(marshal.loads(marshal.dumps(5, 1)), 5)
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213
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214 def test_fuzz(self):
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215 # simple test that it's at least not *totally* trivial to
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216 # crash from bad marshal data
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217 for c in [chr(i) for i in range(256)]:
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218 try:
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219 marshal.loads(c)
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220 except Exception:
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221 pass
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222
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223 def test_loads_recursion(self):
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224 s = 'c' + ('X' * 4*4) + '{' * 2**20
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225 self.assertRaises(ValueError, marshal.loads, s)
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226
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227 def test_recursion_limit(self):
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228 # Create a deeply nested structure.
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229 head = last = []
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230 # The max stack depth should match the value in Python/marshal.c.
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231 MAX_MARSHAL_STACK_DEPTH = 2000
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232 for i in range(MAX_MARSHAL_STACK_DEPTH - 2):
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233 last.append([0])
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234 last = last[-1]
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235
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236 # Verify we don't blow out the stack with dumps/load.
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237 data = marshal.dumps(head)
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238 new_head = marshal.loads(data)
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239 # Don't use == to compare objects, it can exceed the recursion limit.
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240 self.assertEqual(len(new_head), len(head))
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241 self.assertEqual(len(new_head[0]), len(head[0]))
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242 self.assertEqual(len(new_head[-1]), len(head[-1]))
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243
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244 last.append([0])
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245 self.assertRaises(ValueError, marshal.dumps, head)
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246
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247 def test_exact_type_match(self):
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248 # Former bug:
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249 # >>> class Int(int): pass
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250 # >>> type(loads(dumps(Int())))
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251 # <type 'int'>
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252 for typ in (int, long, float, complex, tuple, list, dict, set, frozenset):
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253 # Note: str and unicode sublclasses are not tested because they get handled
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254 # by marshal's routines for objects supporting the buffer API.
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255 subtyp = type('subtyp', (typ,), {})
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256 self.assertRaises(ValueError, marshal.dumps, subtyp())
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257
46880
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258 # Issue #1792 introduced a change in how marshal increases the size of its
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259 # internal buffer; this test ensures that the new code is exercised.
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260 def test_large_marshal(self):
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diff changeset
261 size = int(1e6)
4fb6c0c169ff #1792: Improve performance of marshal.dumps() on large objects by increasing
Andrew M. Kuchling <amk@amk.ca>
parents: 43781
diff changeset
262 testString = 'abc' * size
4fb6c0c169ff #1792: Improve performance of marshal.dumps() on large objects by increasing
Andrew M. Kuchling <amk@amk.ca>
parents: 43781
diff changeset
263 marshal.dumps(testString)
4fb6c0c169ff #1792: Improve performance of marshal.dumps() on large objects by increasing
Andrew M. Kuchling <amk@amk.ca>
parents: 43781
diff changeset
264
4fb6c0c169ff #1792: Improve performance of marshal.dumps() on large objects by increasing
Andrew M. Kuchling <amk@amk.ca>
parents: 43781
diff changeset
265
30038
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
266 def test_main():
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
267 test_support.run_unittest(IntTestCase,
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
268 FloatTestCase,
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
269 StringTestCase,
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
270 CodeTestCase,
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
271 ContainerTestCase,
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
272 ExceptionTestCase,
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
273 BugsTestCase)
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
274
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
275 if __name__ == "__main__":
0c621801409a more extension marshal tests and conversion to unittest - was surprised to
Skip Montanaro <skip@pobox.com>
parents: 24434
diff changeset
276 test_main()