Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_coercion.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 7527da2b05e8
children 2dc0b7131c72 6768b2350c57
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 import copy
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2 import warnings
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3 import unittest
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4 from test.test_support import run_unittest, TestFailed
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5
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6 # Fake a number that implements numeric methods through __coerce__
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7 class CoerceNumber:
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8 def __init__(self, arg):
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9 self.arg = arg
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10
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11 def __repr__(self):
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12 return '<CoerceNumber %s>' % repr(self.arg)
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13
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14 def __coerce__(self, other):
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15 if isinstance(other, CoerceNumber):
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16 return self.arg, other.arg
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17 else:
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18 return (self.arg, other)
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19
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20 # New-style class version of CoerceNumber
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21 class CoerceTo(object):
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22 def __init__(self, arg):
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23 self.arg = arg
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24 def __coerce__(self, other):
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25 if isinstance(other, CoerceTo):
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26 return self.arg, other.arg
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27 else:
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28 return self.arg, other
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29
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30
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31 # Fake a number that implements numeric ops through methods.
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32 class MethodNumber:
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33 def __init__(self,arg):
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34 self.arg = arg
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35
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36 def __repr__(self):
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37 return '<MethodNumber %s>' % repr(self.arg)
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38
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39 def __add__(self,other):
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40 return self.arg + other
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41
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42 def __radd__(self,other):
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43 return other + self.arg
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44
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45 def __sub__(self,other):
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46 return self.arg - other
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47
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48 def __rsub__(self,other):
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49 return other - self.arg
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50
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51 def __mul__(self,other):
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52 return self.arg * other
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53
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54 def __rmul__(self,other):
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55 return other * self.arg
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56
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57 def __div__(self,other):
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58 return self.arg / other
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59
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60 def __rdiv__(self,other):
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61 return other / self.arg
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62
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63 def __truediv__(self,other):
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64 return self.arg / other
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65
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66 def __rtruediv__(self,other):
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67 return other / self.arg
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68
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69 def __floordiv__(self,other):
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70 return self.arg // other
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71
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72 def __rfloordiv__(self,other):
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73 return other // self.arg
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74
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75 def __pow__(self,other):
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76 return self.arg ** other
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77
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78 def __rpow__(self,other):
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79 return other ** self.arg
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80
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81 def __mod__(self,other):
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82 return self.arg % other
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83
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84 def __rmod__(self,other):
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85 return other % self.arg
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86
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87 def __cmp__(self, other):
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88 return cmp(self.arg, other)
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89
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90
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91 candidates = [2, 2L, 4.0, 2+0j, [1], (2,), None,
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92 MethodNumber(2), CoerceNumber(2)]
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93
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94 infix_binops = [ '+', '-', '*', '**', '%', '//', '/' ]
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95
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96 TE = TypeError
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97 # b = both normal and augmented give same result list
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98 # s = single result lists for normal and augmented
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99 # e = equals other results
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100 # result lists: ['+', '-', '*', '**', '%', '//', ('classic /', 'new /')]
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101 # ^^^^^^^^^^^^^^^^^^^^^^
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102 # 2-tuple if results differ
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103 # else only one value
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104 infix_results = {
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105 # 2
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106 (0,0): ('b', [4, 0, 4, 4, 0, 1, (1, 1.0)]),
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107 (0,1): ('e', (0,0)),
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108 (0,2): ('b', [6.0, -2.0, 8.0, 16.0, 2.0, 0.0, 0.5]),
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109 (0,3): ('b', [4+0j, 0+0j, 4+0j, 4+0j, 0+0j, 1+0j, 1+0j]),
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110 (0,4): ('b', [TE, TE, [1, 1], TE, TE, TE, TE]),
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111 (0,5): ('b', [TE, TE, (2, 2), TE, TE, TE, TE]),
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112 (0,6): ('b', [TE, TE, TE, TE, TE, TE, TE]),
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113 (0,7): ('e', (0,0)),
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114 (0,8): ('e', (0,0)),
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115
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116 # 2L
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117 (1,0): ('e', (0,0)),
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118 (1,1): ('e', (0,1)),
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119 (1,2): ('e', (0,2)),
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120 (1,3): ('e', (0,3)),
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121 (1,4): ('e', (0,4)),
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122 (1,5): ('e', (0,5)),
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123 (1,6): ('e', (0,6)),
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parents: 36751
diff changeset
124 (1,7): ('e', (0,7)),
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parents: 36751
diff changeset
125 (1,8): ('e', (0,8)),
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parents: 36751
diff changeset
126
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parents: 36751
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127 # 4.0
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128 (2,0): ('b', [6.0, 2.0, 8.0, 16.0, 0.0, 2.0, 2.0]),
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parents: 36751
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129 (2,1): ('e', (2,0)),
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parents: 36751
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130 (2,2): ('b', [8.0, 0.0, 16.0, 256.0, 0.0, 1.0, 1.0]),
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parents: 36751
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131 (2,3): ('b', [6+0j, 2+0j, 8+0j, 16+0j, 0+0j, 2+0j, 2+0j]),
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diff changeset
132 (2,4): ('b', [TE, TE, TE, TE, TE, TE, TE]),
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parents: 36751
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133 (2,5): ('e', (2,4)),
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parents: 36751
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134 (2,6): ('e', (2,4)),
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parents: 36751
diff changeset
135 (2,7): ('e', (2,0)),
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parents: 36751
diff changeset
136 (2,8): ('e', (2,0)),
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137
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138 # (2+0j)
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139 (3,0): ('b', [4+0j, 0+0j, 4+0j, 4+0j, 0+0j, 1+0j, 1+0j]),
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parents: 36751
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140 (3,1): ('e', (3,0)),
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Georg Brandl <georg@python.org>
parents: 36751
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141 (3,2): ('b', [6+0j, -2+0j, 8+0j, 16+0j, 2+0j, 0+0j, 0.5+0j]),
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parents: 36751
diff changeset
142 (3,3): ('b', [4+0j, 0+0j, 4+0j, 4+0j, 0+0j, 1+0j, 1+0j]),
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parents: 36751
diff changeset
143 (3,4): ('b', [TE, TE, TE, TE, TE, TE, TE]),
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parents: 36751
diff changeset
144 (3,5): ('e', (3,4)),
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parents: 36751
diff changeset
145 (3,6): ('e', (3,4)),
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parents: 36751
diff changeset
146 (3,7): ('e', (3,0)),
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parents: 36751
diff changeset
147 (3,8): ('e', (3,0)),
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148
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149 # [1]
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150 (4,0): ('b', [TE, TE, [1, 1], TE, TE, TE, TE]),
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151 (4,1): ('e', (4,0)),
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parents: 36751
diff changeset
152 (4,2): ('b', [TE, TE, TE, TE, TE, TE, TE]),
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diff changeset
153 (4,3): ('b', [TE, TE, TE, TE, TE, TE, TE]),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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diff changeset
154 (4,4): ('b', [[1, 1], TE, TE, TE, TE, TE, TE]),
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parents: 36751
diff changeset
155 (4,5): ('s', [TE, TE, TE, TE, TE, TE, TE], [[1, 2], TE, TE, TE, TE, TE, TE]),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
156 (4,6): ('b', [TE, TE, TE, TE, TE, TE, TE]),
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parents: 36751
diff changeset
157 (4,7): ('e', (4,0)),
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parents: 36751
diff changeset
158 (4,8): ('e', (4,0)),
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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159
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160 # (2,)
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
161 (5,0): ('b', [TE, TE, (2, 2), TE, TE, TE, TE]),
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parents: 36751
diff changeset
162 (5,1): ('e', (5,0)),
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parents: 36751
diff changeset
163 (5,2): ('b', [TE, TE, TE, TE, TE, TE, TE]),
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parents: 36751
diff changeset
164 (5,3): ('e', (5,2)),
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parents: 36751
diff changeset
165 (5,4): ('e', (5,2)),
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parents: 36751
diff changeset
166 (5,5): ('b', [(2, 2), TE, TE, TE, TE, TE, TE]),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
167 (5,6): ('b', [TE, TE, TE, TE, TE, TE, TE]),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
168 (5,7): ('e', (5,0)),
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parents: 36751
diff changeset
169 (5,8): ('e', (5,0)),
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170
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171 # None
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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diff changeset
172 (6,0): ('b', [TE, TE, TE, TE, TE, TE, TE]),
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parents: 36751
diff changeset
173 (6,1): ('e', (6,0)),
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parents: 36751
diff changeset
174 (6,2): ('e', (6,0)),
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parents: 36751
diff changeset
175 (6,3): ('e', (6,0)),
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parents: 36751
diff changeset
176 (6,4): ('e', (6,0)),
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parents: 36751
diff changeset
177 (6,5): ('e', (6,0)),
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parents: 36751
diff changeset
178 (6,6): ('e', (6,0)),
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parents: 36751
diff changeset
179 (6,7): ('e', (6,0)),
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parents: 36751
diff changeset
180 (6,8): ('e', (6,0)),
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181
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182 # MethodNumber(2)
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183 (7,0): ('e', (0,0)),
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parents: 36751
diff changeset
184 (7,1): ('e', (0,1)),
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parents: 36751
diff changeset
185 (7,2): ('e', (0,2)),
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
186 (7,3): ('e', (0,3)),
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parents: 36751
diff changeset
187 (7,4): ('e', (0,4)),
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
188 (7,5): ('e', (0,5)),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
189 (7,6): ('e', (0,6)),
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
190 (7,7): ('e', (0,7)),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
Georg Brandl <georg@python.org>
parents: 36751
diff changeset
191 (7,8): ('e', (0,8)),
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
192
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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193 # CoerceNumber(2)
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194 (8,0): ('e', (0,0)),
37277
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parents: 36751
diff changeset
195 (8,1): ('e', (0,1)),
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parents: 36751
diff changeset
196 (8,2): ('e', (0,2)),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
Georg Brandl <georg@python.org>
parents: 36751
diff changeset
197 (8,3): ('e', (0,3)),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
Georg Brandl <georg@python.org>
parents: 36751
diff changeset
198 (8,4): ('e', (0,4)),
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parents: 36751
diff changeset
199 (8,5): ('e', (0,5)),
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
200 (8,6): ('e', (0,6)),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
201 (8,7): ('e', (0,7)),
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
202 (8,8): ('e', (0,8)),
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
203 }
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204
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
Georg Brandl <georg@python.org>
parents: 36751
diff changeset
205 def process_infix_results():
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parents: 36751
diff changeset
206 for key in sorted(infix_results):
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parents: 36751
diff changeset
207 val = infix_results[key]
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diff changeset
208 if val[0] == 'e':
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diff changeset
209 infix_results[key] = infix_results[val[1]]
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diff changeset
210 else:
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parents: 36751
diff changeset
211 if val[0] == 's':
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diff changeset
212 res = (val[1], val[2])
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diff changeset
213 elif val[0] == 'b':
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parents: 36751
diff changeset
214 res = (val[1], val[1])
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diff changeset
215 for i in range(1):
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
216 if isinstance(res[i][6], tuple):
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
Georg Brandl <georg@python.org>
parents: 36751
diff changeset
217 if 1/2 == 0:
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Georg Brandl <georg@python.org>
parents: 36751
diff changeset
218 # testing with classic (floor) division
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parents: 36751
diff changeset
219 res[i][6] = res[i][6][0]
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diff changeset
220 else:
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diff changeset
221 # testing with -Qnew
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diff changeset
222 res[i][6] = res[i][6][1]
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parents: 36751
diff changeset
223 infix_results[key] = res
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parents: 36751
diff changeset
224
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diff changeset
225
e58a71a8550e whitespace normalisation
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37277
diff changeset
226
37277
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diff changeset
227 process_infix_results()
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diff changeset
228 # now infix_results has two lists of results for every pairing.
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diff changeset
229
15687
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
diff changeset
230 prefix_binops = [ 'divmod' ]
37277
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diff changeset
231 prefix_results = [
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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diff changeset
232 [(1,0), (1L,0L), (0.0,2.0), ((1+0j),0j), TE, TE, TE, TE, (1,0)],
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
233 [(1L,0L), (1L,0L), (0.0,2.0), ((1+0j),0j), TE, TE, TE, TE, (1L,0L)],
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
Georg Brandl <georg@python.org>
parents: 36751
diff changeset
234 [(2.0,0.0), (2.0,0.0), (1.0,0.0), ((2+0j),0j), TE, TE, TE, TE, (2.0,0.0)],
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diff changeset
235 [((1+0j),0j), ((1+0j),0j), (0j,(2+0j)), ((1+0j),0j), TE, TE, TE, TE, ((1+0j),0j)],
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
236 [TE, TE, TE, TE, TE, TE, TE, TE, TE],
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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parents: 36751
diff changeset
237 [TE, TE, TE, TE, TE, TE, TE, TE, TE],
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diff changeset
238 [TE, TE, TE, TE, TE, TE, TE, TE, TE],
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diff changeset
239 [TE, TE, TE, TE, TE, TE, TE, TE, TE],
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diff changeset
240 [(1,0), (1L,0L), (0.0,2.0), ((1+0j),0j), TE, TE, TE, TE, (1,0)]
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diff changeset
241 ]
15687
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diff changeset
242
31637
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diff changeset
243 def format_float(value):
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diff changeset
244 if abs(value) < 0.01:
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245 return '0.0'
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diff changeset
246 else:
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diff changeset
247 return '%.1f' % value
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diff changeset
248
1253f6e20cde Make test_coercion.py less sensitive to platform fp quirks. Closes
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diff changeset
249 # avoid testing platform fp quirks
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diff changeset
250 def format_result(value):
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251 if isinstance(value, complex):
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252 return '(%s + %sj)' % (format_float(value.real),
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diff changeset
253 format_float(value.imag))
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diff changeset
254 elif isinstance(value, float):
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diff changeset
255 return format_float(value)
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diff changeset
256 return str(value)
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diff changeset
257
37277
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258 class CoercionTest(unittest.TestCase):
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259 def test_infix_binops(self):
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diff changeset
260 for ia, a in enumerate(candidates):
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diff changeset
261 for ib, b in enumerate(candidates):
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diff changeset
262 results = infix_results[(ia, ib)]
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263 for op, res, ires in zip(infix_binops, results[0], results[1]):
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264 if res is TE:
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265 self.assertRaises(TypeError, eval,
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266 'a %s b' % op, {'a': a, 'b': b})
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diff changeset
267 else:
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268 self.assertEquals(format_result(res),
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269 format_result(eval('a %s b' % op)),
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270 '%s %s %s == %s failed' % (a, op, b, res))
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diff changeset
271 try:
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272 z = copy.copy(a)
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diff changeset
273 except copy.Error:
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274 z = a # assume it has no inplace ops
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275 if ires is TE:
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276 try:
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277 exec 'z %s= b' % op
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diff changeset
278 except TypeError:
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279 pass
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280 else:
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281 self.fail("TypeError not raised")
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282 else:
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diff changeset
283 exec('z %s= b' % op)
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diff changeset
284 self.assertEquals(ires, z)
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diff changeset
285
37277
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diff changeset
286 def test_prefix_binops(self):
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diff changeset
287 for ia, a in enumerate(candidates):
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diff changeset
288 for ib, b in enumerate(candidates):
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diff changeset
289 for op in prefix_binops:
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diff changeset
290 res = prefix_results[ia][ib]
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diff changeset
291 if res is TE:
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diff changeset
292 self.assertRaises(TypeError, eval,
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diff changeset
293 '%s(a, b)' % op, {'a': a, 'b': b})
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diff changeset
294 else:
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diff changeset
295 self.assertEquals(format_result(res),
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diff changeset
296 format_result(eval('%s(a, b)' % op)),
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diff changeset
297 '%s(%s, %s) == %s failed' % (op, a, b, res))
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86c3a7c6b00a Dima Dorfman's patch for coercion/comparison of C types (patch #995939), with
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diff changeset
298
37277
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diff changeset
299 def test_cmptypes(self):
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diff changeset
300 # Built-in tp_compare slots expect their arguments to have the
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diff changeset
301 # same type, but a user-defined __coerce__ doesn't have to obey.
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diff changeset
302 # SF #980352
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diff changeset
303 evil_coercer = CoerceTo(42)
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diff changeset
304 # Make sure these don't crash any more
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diff changeset
305 self.assertNotEquals(cmp(u'fish', evil_coercer), 0)
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diff changeset
306 self.assertNotEquals(cmp(slice(1), evil_coercer), 0)
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diff changeset
307 # ...but that this still works
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diff changeset
308 class WackyComparer(object):
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diff changeset
309 def __cmp__(slf, other):
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diff changeset
310 self.assert_(other == 42, 'expected evil_coercer, got %r' % other)
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diff changeset
311 return 0
48213
7527da2b05e8 Issue 2235: Py3k warnings are now emitted for classes that will no longer inherit a__hash__ implementation from a parent class in Python 3.x. The standard library and test suite have been updated to not emit these warnings.
Nick Coghlan <ncoghlan@gmail.com>
parents: 45468
diff changeset
312 __hash__ = None # Invalid cmp makes this unhashable
37277
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diff changeset
313 self.assertEquals(cmp(WackyComparer(), evil_coercer), 0)
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diff changeset
314 # ...and classic classes too, since that code path is a little different
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diff changeset
315 class ClassicWackyComparer:
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diff changeset
316 def __cmp__(slf, other):
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diff changeset
317 self.assert_(other == 42, 'expected evil_coercer, got %r' % other)
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diff changeset
318 return 0
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diff changeset
319 self.assertEquals(cmp(ClassicWackyComparer(), evil_coercer), 0)
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86c3a7c6b00a Dima Dorfman's patch for coercion/comparison of C types (patch #995939), with
Armin Rigo <arigo@tunes.org>
parents: 31637
diff changeset
320
38809
ece8a6751db7 Missed test for rev. 46933; infinite recursion from __coerce__() returning its arguments reversed.
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diff changeset
321 def test_infinite_rec_classic_classes(self):
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diff changeset
322 # if __coerce__() returns its arguments reversed it causes an infinite
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diff changeset
323 # recursion for classic classes.
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diff changeset
324 class Tester:
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diff changeset
325 def __coerce__(self, other):
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diff changeset
326 return other, self
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diff changeset
327
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diff changeset
328 exc = TestFailed("__coerce__() returning its arguments reverse "
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diff changeset
329 "should raise RuntimeError")
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diff changeset
330 try:
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diff changeset
331 Tester() + 1
ece8a6751db7 Missed test for rev. 46933; infinite recursion from __coerce__() returning its arguments reversed.
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diff changeset
332 except (RuntimeError, TypeError):
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diff changeset
333 return
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diff changeset
334 except:
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diff changeset
335 raise exc
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diff changeset
336 else:
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diff changeset
337 raise exc
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diff changeset
338
37277
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diff changeset
339 def test_main():
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diff changeset
340 warnings.filterwarnings("ignore",
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diff changeset
341 r'complex divmod\(\), // and % are deprecated',
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diff changeset
342 DeprecationWarning,
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diff changeset
343 r'test.test_coercion$')
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diff changeset
344 run_unittest(CoercionTest)
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diff changeset
345
efd141cbf6cb Make test_coercion pass with -Qnew. Converted to unittest on the occasion.
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diff changeset
346 if __name__ == "__main__":
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diff changeset
347 test_main()