1 | import cPickle |
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2 | import cStringIO |
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3 | import io |
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4 | import functools |
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5 | import unittest |
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6 | from test.pickletester import (AbstractUnpickleTests, |
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7 | AbstractPickleTests, |
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8 | AbstractPickleModuleTests, |
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9 | AbstractPicklerUnpicklerObjectTests, |
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10 | BigmemPickleTests) |
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11 | from test import test_support |
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12 | |
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13 | class cStringIOMixin: |
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14 | output = input = cStringIO.StringIO |
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15 | |
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16 | def close(self, f): |
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17 | pass |
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18 | |
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19 | class BytesIOMixin: |
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20 | output = input = io.BytesIO |
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21 | |
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22 | def close(self, f): |
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23 | pass |
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24 | |
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25 | class FileIOMixin: |
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26 | |
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27 | def output(self): |
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28 | return open(test_support.TESTFN, 'wb+') |
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29 | |
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30 | def input(self, data): |
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31 | f = open(test_support.TESTFN, 'wb+') |
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32 | try: |
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33 | f.write(data) |
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34 | f.seek(0) |
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35 | return f |
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36 | except: |
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37 | f.close() |
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38 | raise |
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39 | |
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40 | def close(self, f): |
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41 | f.close() |
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42 | test_support.unlink(test_support.TESTFN) |
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43 | |
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44 | |
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45 | class cPickleTests(AbstractUnpickleTests, AbstractPickleTests, |
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46 | AbstractPickleModuleTests): |
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47 | |
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48 | def setUp(self): |
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49 | self.dumps = cPickle.dumps |
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50 | self.loads = cPickle.loads |
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51 | |
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52 | error = cPickle.BadPickleGet |
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53 | module = cPickle |
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54 | bad_stack_errors = (cPickle.UnpicklingError,) |
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55 | bad_mark_errors = (EOFError,) |
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56 | truncated_errors = (cPickle.UnpicklingError, EOFError, |
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57 | AttributeError, ValueError) |
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58 | |
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59 | class cPickleUnpicklerTests(AbstractUnpickleTests): |
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60 | |
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61 | def loads(self, buf): |
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62 | f = self.input(buf) |
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63 | try: |
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64 | p = cPickle.Unpickler(f) |
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65 | return p.load() |
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66 | finally: |
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67 | self.close(f) |
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68 | |
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69 | error = cPickle.BadPickleGet |
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70 | bad_stack_errors = (cPickle.UnpicklingError,) |
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71 | bad_mark_errors = (EOFError,) |
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72 | truncated_errors = (cPickle.UnpicklingError, EOFError, |
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73 | AttributeError, ValueError) |
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74 | |
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75 | class cStringIOCUnpicklerTests(cStringIOMixin, cPickleUnpicklerTests): |
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76 | pass |
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77 | |
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78 | class BytesIOCUnpicklerTests(BytesIOMixin, cPickleUnpicklerTests): |
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79 | pass |
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80 | |
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81 | class FileIOCUnpicklerTests(FileIOMixin, cPickleUnpicklerTests): |
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82 | pass |
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83 | |
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84 | |
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85 | class cPicklePicklerTests(AbstractPickleTests): |
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86 | |
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87 | def dumps(self, arg, proto=0): |
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88 | f = self.output() |
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89 | try: |
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90 | p = cPickle.Pickler(f, proto) |
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91 | p.dump(arg) |
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92 | f.seek(0) |
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93 | return f.read() |
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94 | finally: |
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95 | self.close(f) |
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96 | |
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97 | def loads(self, buf): |
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98 | f = self.input(buf) |
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99 | try: |
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100 | p = cPickle.Unpickler(f) |
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101 | return p.load() |
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102 | finally: |
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103 | self.close(f) |
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104 | |
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105 | class cStringIOCPicklerTests(cStringIOMixin, cPicklePicklerTests): |
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106 | pass |
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107 | |
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108 | class BytesIOCPicklerTests(BytesIOMixin, cPicklePicklerTests): |
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109 | pass |
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110 | |
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111 | class FileIOCPicklerTests(FileIOMixin, cPicklePicklerTests): |
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112 | pass |
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113 | |
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114 | |
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115 | class cPickleListPicklerTests(AbstractPickleTests): |
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116 | |
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117 | def dumps(self, arg, proto=0): |
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118 | p = cPickle.Pickler(proto) |
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119 | p.dump(arg) |
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120 | return p.getvalue() |
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121 | |
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122 | def loads(self, *args): |
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123 | f = self.input(args[0]) |
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124 | try: |
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125 | p = cPickle.Unpickler(f) |
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126 | return p.load() |
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127 | finally: |
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128 | self.close(f) |
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129 | |
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130 | error = cPickle.BadPickleGet |
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131 | |
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132 | class cStringIOCPicklerListTests(cStringIOMixin, cPickleListPicklerTests): |
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133 | pass |
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134 | |
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135 | class BytesIOCPicklerListTests(BytesIOMixin, cPickleListPicklerTests): |
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136 | pass |
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137 | |
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138 | class FileIOCPicklerListTests(FileIOMixin, cPickleListPicklerTests): |
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139 | pass |
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140 | |
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141 | |
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142 | class cPickleFastPicklerTests(AbstractPickleTests): |
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143 | |
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144 | def dumps(self, arg, proto=0): |
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145 | f = self.output() |
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146 | try: |
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147 | p = cPickle.Pickler(f, proto) |
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148 | p.fast = 1 |
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149 | p.dump(arg) |
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150 | f.seek(0) |
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151 | return f.read() |
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152 | finally: |
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153 | self.close(f) |
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154 | |
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155 | def loads(self, *args): |
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156 | f = self.input(args[0]) |
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157 | try: |
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158 | p = cPickle.Unpickler(f) |
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159 | return p.load() |
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160 | finally: |
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161 | self.close(f) |
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162 | |
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163 | def test_nonrecursive_deep(self): |
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164 | # If it's not cyclic, it should pickle OK even if the nesting |
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165 | # depth exceeds PY_CPICKLE_FAST_LIMIT. That happens to be |
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166 | # 50 today. Jack Jansen reported stack overflow on Mac OS 9 |
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167 | # at 64. |
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168 | a = [] |
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169 | for i in range(60): |
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170 | a = [a] |
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171 | b = self.loads(self.dumps(a)) |
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172 | self.assertEqual(a, b) |
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173 | |
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174 | for name in dir(AbstractPickleTests): |
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175 | if name.startswith('test_recursive_'): |
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176 | func = getattr(AbstractPickleTests, name) |
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177 | if '_subclass' in name and '_and_inst' not in name: |
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178 | assert_args = RuntimeError, 'maximum recursion depth exceeded' |
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179 | else: |
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180 | assert_args = ValueError, "can't pickle cyclic objects" |
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181 | def wrapper(self, func=func, assert_args=assert_args): |
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182 | with self.assertRaisesRegexp(*assert_args): |
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183 | func(self) |
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184 | functools.update_wrapper(wrapper, func) |
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185 | setattr(cPickleFastPicklerTests, name, wrapper) |
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186 | |
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187 | class cStringIOCPicklerFastTests(cStringIOMixin, cPickleFastPicklerTests): |
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188 | pass |
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189 | |
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190 | class BytesIOCPicklerFastTests(BytesIOMixin, cPickleFastPicklerTests): |
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191 | pass |
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192 | |
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193 | class FileIOCPicklerFastTests(FileIOMixin, cPickleFastPicklerTests): |
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194 | pass |
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195 | |
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196 | |
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197 | class cPicklePicklerUnpicklerObjectTests(AbstractPicklerUnpicklerObjectTests): |
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198 | |
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199 | pickler_class = cPickle.Pickler |
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200 | unpickler_class = cPickle.Unpickler |
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201 | |
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202 | class cPickleBigmemPickleTests(BigmemPickleTests): |
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203 | |
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204 | def dumps(self, arg, proto=0, fast=0): |
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205 | # Ignore fast |
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206 | return cPickle.dumps(arg, proto) |
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207 | |
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208 | def loads(self, buf): |
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209 | # Ignore fast |
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210 | return cPickle.loads(buf) |
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211 | |
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212 | |
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213 | class Node(object): |
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214 | pass |
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215 | |
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216 | class cPickleDeepRecursive(unittest.TestCase): |
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217 | def test_issue2702(self): |
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218 | # This should raise a RecursionLimit but in some |
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219 | # platforms (FreeBSD, win32) sometimes raises KeyError instead, |
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220 | # or just silently terminates the interpreter (=crashes). |
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221 | nodes = [Node() for i in range(500)] |
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222 | for n in nodes: |
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223 | n.connections = list(nodes) |
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224 | n.connections.remove(n) |
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225 | self.assertRaises((AttributeError, RuntimeError), cPickle.dumps, n) |
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226 | |
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227 | def test_issue3179(self): |
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228 | # Safe test, because I broke this case when fixing the |
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229 | # behaviour for the previous test. |
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230 | res=[] |
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231 | for x in range(1,2000): |
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232 | res.append(dict(doc=x, similar=[])) |
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233 | cPickle.dumps(res) |
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234 | |
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235 | |
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236 | def test_main(): |
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237 | test_support.run_unittest( |
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238 | cPickleTests, |
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239 | cStringIOCUnpicklerTests, |
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240 | BytesIOCUnpicklerTests, |
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241 | FileIOCUnpicklerTests, |
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242 | cStringIOCPicklerTests, |
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243 | BytesIOCPicklerTests, |
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244 | FileIOCPicklerTests, |
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245 | cStringIOCPicklerListTests, |
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246 | BytesIOCPicklerListTests, |
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247 | FileIOCPicklerListTests, |
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248 | cStringIOCPicklerFastTests, |
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249 | BytesIOCPicklerFastTests, |
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250 | FileIOCPicklerFastTests, |
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251 | cPickleDeepRecursive, |
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252 | cPicklePicklerUnpicklerObjectTests, |
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253 | cPickleBigmemPickleTests, |
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254 | ) |
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255 | |
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256 | if __name__ == "__main__": |
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257 | test_main() |
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