Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_bool.py @ 79691:05c8928362ee

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Merge __next__ method link fixes with 3.3.
author Ezio Melotti <ezio.melotti@gmail.com>
date Fri, 12 Oct 2012 13:46:37 +0300
parents 622cf101eccf
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # Test properties of bool promised by PEP 285
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2
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3 import unittest
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4 from test import support
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5
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6 import os
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7
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8 class BoolTest(unittest.TestCase):
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9
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10 def test_subclass(self):
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11 try:
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12 class C(bool):
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13 pass
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14 except TypeError:
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15 pass
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16 else:
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17 self.fail("bool should not be subclassable")
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18
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19 self.assertRaises(TypeError, int.__new__, bool, 0)
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20
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21 def test_print(self):
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22 try:
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23 fo = open(support.TESTFN, "w")
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24 print(False, True, file=fo)
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25 fo.close()
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26 fo = open(support.TESTFN, "r")
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27 self.assertEqual(fo.read(), 'False True\n')
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28 finally:
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29 fo.close()
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30 os.remove(support.TESTFN)
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31
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32 def test_repr(self):
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33 self.assertEqual(repr(False), 'False')
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34 self.assertEqual(repr(True), 'True')
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35 self.assertEqual(eval(repr(False)), False)
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36 self.assertEqual(eval(repr(True)), True)
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37
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38 def test_str(self):
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39 self.assertEqual(str(False), 'False')
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40 self.assertEqual(str(True), 'True')
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41
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42 def test_int(self):
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43 self.assertEqual(int(False), 0)
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44 self.assertIsNot(int(False), False)
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45 self.assertEqual(int(True), 1)
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46 self.assertIsNot(int(True), True)
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47
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48 def test_float(self):
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49 self.assertEqual(float(False), 0.0)
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50 self.assertIsNot(float(False), False)
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51 self.assertEqual(float(True), 1.0)
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52 self.assertIsNot(float(True), True)
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53
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54 def test_math(self):
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55 self.assertEqual(+False, 0)
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56 self.assertIsNot(+False, False)
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57 self.assertEqual(-False, 0)
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58 self.assertIsNot(-False, False)
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59 self.assertEqual(abs(False), 0)
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60 self.assertIsNot(abs(False), False)
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61 self.assertEqual(+True, 1)
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62 self.assertIsNot(+True, True)
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63 self.assertEqual(-True, -1)
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64 self.assertEqual(abs(True), 1)
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65 self.assertIsNot(abs(True), True)
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66 self.assertEqual(~False, -1)
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67 self.assertEqual(~True, -2)
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69 self.assertEqual(False+2, 2)
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70 self.assertEqual(True+2, 3)
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71 self.assertEqual(2+False, 2)
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72 self.assertEqual(2+True, 3)
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73
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74 self.assertEqual(False+False, 0)
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75 self.assertIsNot(False+False, False)
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76 self.assertEqual(False+True, 1)
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77 self.assertIsNot(False+True, True)
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78 self.assertEqual(True+False, 1)
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79 self.assertIsNot(True+False, True)
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80 self.assertEqual(True+True, 2)
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81
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82 self.assertEqual(True-True, 0)
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83 self.assertIsNot(True-True, False)
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84 self.assertEqual(False-False, 0)
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85 self.assertIsNot(False-False, False)
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86 self.assertEqual(True-False, 1)
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87 self.assertIsNot(True-False, True)
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88 self.assertEqual(False-True, -1)
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89
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90 self.assertEqual(True*1, 1)
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91 self.assertEqual(False*1, 0)
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92 self.assertIsNot(False*1, False)
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93
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94 self.assertEqual(True/1, 1)
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95 self.assertIsNot(True/1, True)
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96 self.assertEqual(False/1, 0)
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97 self.assertIsNot(False/1, False)
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98
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99 for b in False, True:
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100 for i in 0, 1, 2:
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101 self.assertEqual(b**i, int(b)**i)
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102 self.assertIsNot(b**i, bool(int(b)**i))
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104 for a in False, True:
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105 for b in False, True:
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106 self.assertIs(a&b, bool(int(a)&int(b)))
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107 self.assertIs(a|b, bool(int(a)|int(b)))
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108 self.assertIs(a^b, bool(int(a)^int(b)))
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109 self.assertEqual(a&int(b), int(a)&int(b))
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110 self.assertIsNot(a&int(b), bool(int(a)&int(b)))
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111 self.assertEqual(a|int(b), int(a)|int(b))
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112 self.assertIsNot(a|int(b), bool(int(a)|int(b)))
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113 self.assertEqual(a^int(b), int(a)^int(b))
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114 self.assertIsNot(a^int(b), bool(int(a)^int(b)))
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115 self.assertEqual(int(a)&b, int(a)&int(b))
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116 self.assertIsNot(int(a)&b, bool(int(a)&int(b)))
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117 self.assertEqual(int(a)|b, int(a)|int(b))
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118 self.assertIsNot(int(a)|b, bool(int(a)|int(b)))
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119 self.assertEqual(int(a)^b, int(a)^int(b))
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120 self.assertIsNot(int(a)^b, bool(int(a)^int(b)))
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121
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122 self.assertIs(1==1, True)
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123 self.assertIs(1==0, False)
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124 self.assertIs(0<1, True)
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125 self.assertIs(1<0, False)
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126 self.assertIs(0<=0, True)
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127 self.assertIs(1<=0, False)
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128 self.assertIs(1>0, True)
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129 self.assertIs(1>1, False)
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130 self.assertIs(1>=1, True)
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131 self.assertIs(0>=1, False)
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132 self.assertIs(0!=1, True)
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133 self.assertIs(0!=0, False)
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134
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135 x = [1]
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136 self.assertIs(x is x, True)
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137 self.assertIs(x is not x, False)
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138
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139 self.assertIs(1 in x, True)
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140 self.assertIs(0 in x, False)
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141 self.assertIs(1 not in x, False)
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142 self.assertIs(0 not in x, True)
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143
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144 x = {1: 2}
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145 self.assertIs(x is x, True)
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146 self.assertIs(x is not x, False)
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147
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148 self.assertIs(1 in x, True)
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149 self.assertIs(0 in x, False)
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150 self.assertIs(1 not in x, False)
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151 self.assertIs(0 not in x, True)
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152
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153 self.assertIs(not True, False)
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154 self.assertIs(not False, True)
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155
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156 def test_convert(self):
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157 self.assertRaises(TypeError, bool, 42, 42)
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158 self.assertIs(bool(10), True)
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159 self.assertIs(bool(1), True)
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160 self.assertIs(bool(-1), True)
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161 self.assertIs(bool(0), False)
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162 self.assertIs(bool("hello"), True)
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163 self.assertIs(bool(""), False)
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164 self.assertIs(bool(), False)
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165
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166 def test_format(self):
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167 self.assertEqual("%d" % False, "0")
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168 self.assertEqual("%d" % True, "1")
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169 self.assertEqual("%x" % False, "0")
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170 self.assertEqual("%x" % True, "1")
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171
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172 def test_hasattr(self):
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173 self.assertIs(hasattr([], "append"), True)
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174 self.assertIs(hasattr([], "wobble"), False)
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175
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176 def test_callable(self):
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177 self.assertIs(callable(len), True)
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178 self.assertIs(callable(1), False)
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179
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180 def test_isinstance(self):
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181 self.assertIs(isinstance(True, bool), True)
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182 self.assertIs(isinstance(False, bool), True)
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183 self.assertIs(isinstance(True, int), True)
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184 self.assertIs(isinstance(False, int), True)
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185 self.assertIs(isinstance(1, bool), False)
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186 self.assertIs(isinstance(0, bool), False)
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187
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188 def test_issubclass(self):
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189 self.assertIs(issubclass(bool, int), True)
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190 self.assertIs(issubclass(int, bool), False)
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191
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192 def test_contains(self):
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193 self.assertIs(1 in {}, False)
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194 self.assertIs(1 in {1:1}, True)
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195
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196 def test_string(self):
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197 self.assertIs("xyz".endswith("z"), True)
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198 self.assertIs("xyz".endswith("x"), False)
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199 self.assertIs("xyz0123".isalnum(), True)
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200 self.assertIs("@#$%".isalnum(), False)
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201 self.assertIs("xyz".isalpha(), True)
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202 self.assertIs("@#$%".isalpha(), False)
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203 self.assertIs("0123".isdigit(), True)
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204 self.assertIs("xyz".isdigit(), False)
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205 self.assertIs("xyz".islower(), True)
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206 self.assertIs("XYZ".islower(), False)
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207 self.assertIs("0123".isdecimal(), True)
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208 self.assertIs("xyz".isdecimal(), False)
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209 self.assertIs("0123".isnumeric(), True)
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210 self.assertIs("xyz".isnumeric(), False)
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211 self.assertIs(" ".isspace(), True)
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212 self.assertIs("\xa0".isspace(), True)
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213 self.assertIs("\u3000".isspace(), True)
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214 self.assertIs("XYZ".isspace(), False)
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215 self.assertIs("X".istitle(), True)
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216 self.assertIs("x".istitle(), False)
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217 self.assertIs("XYZ".isupper(), True)
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218 self.assertIs("xyz".isupper(), False)
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219 self.assertIs("xyz".startswith("x"), True)
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220 self.assertIs("xyz".startswith("z"), False)
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221
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222 def test_boolean(self):
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223 self.assertEqual(True & 1, 1)
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224 self.assertNotIsInstance(True & 1, bool)
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225 self.assertIs(True & True, True)
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226
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227 self.assertEqual(True | 1, 1)
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228 self.assertNotIsInstance(True | 1, bool)
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229 self.assertIs(True | True, True)
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230
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231 self.assertEqual(True ^ 1, 0)
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232 self.assertNotIsInstance(True ^ 1, bool)
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233 self.assertIs(True ^ True, False)
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234
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235 def test_fileclosed(self):
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236 try:
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237 f = open(support.TESTFN, "w")
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238 self.assertIs(f.closed, False)
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239 f.close()
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240 self.assertIs(f.closed, True)
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241 finally:
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242 os.remove(support.TESTFN)
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243
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244 def test_types(self):
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245 # types are always true.
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246 for t in [bool, complex, dict, float, int, list, object,
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247 set, str, tuple, type]:
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248 self.assertIs(bool(t), True)
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249
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250 def test_operator(self):
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251 import operator
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252 self.assertIs(operator.truth(0), False)
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253 self.assertIs(operator.truth(1), True)
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254 self.assertIs(operator.not_(1), False)
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255 self.assertIs(operator.not_(0), True)
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256 self.assertIs(operator.contains([], 1), False)
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257 self.assertIs(operator.contains([1], 1), True)
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258 self.assertIs(operator.lt(0, 0), False)
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259 self.assertIs(operator.lt(0, 1), True)
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260 self.assertIs(operator.is_(True, True), True)
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261 self.assertIs(operator.is_(True, False), False)
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262 self.assertIs(operator.is_not(True, True), False)
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263 self.assertIs(operator.is_not(True, False), True)
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264
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265 def test_marshal(self):
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266 import marshal
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267 self.assertIs(marshal.loads(marshal.dumps(True)), True)
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268 self.assertIs(marshal.loads(marshal.dumps(False)), False)
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269
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270 def test_pickle(self):
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271 import pickle
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272 self.assertIs(pickle.loads(pickle.dumps(True)), True)
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273 self.assertIs(pickle.loads(pickle.dumps(False)), False)
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274 self.assertIs(pickle.loads(pickle.dumps(True, True)), True)
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275 self.assertIs(pickle.loads(pickle.dumps(False, True)), False)
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276
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277 def test_picklevalues(self):
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278 # Test for specific backwards-compatible pickle values
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279 import pickle
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280 self.assertEqual(pickle.dumps(True, protocol=0), b"I01\n.")
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281 self.assertEqual(pickle.dumps(False, protocol=0), b"I00\n.")
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282 self.assertEqual(pickle.dumps(True, protocol=1), b"I01\n.")
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283 self.assertEqual(pickle.dumps(False, protocol=1), b"I00\n.")
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284 self.assertEqual(pickle.dumps(True, protocol=2), b'\x80\x02\x88.')
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285 self.assertEqual(pickle.dumps(False, protocol=2), b'\x80\x02\x89.')
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286
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287 def test_convert_to_bool(self):
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288 # Verify that TypeError occurs when bad things are returned
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289 # from __bool__(). This isn't really a bool test, but
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290 # it's related.
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291 check = lambda o: self.assertRaises(TypeError, bool, o)
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292 class Foo(object):
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293 def __bool__(self):
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294 return self
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295 check(Foo())
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296
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297 class Bar(object):
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298 def __bool__(self):
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299 return "Yes"
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300 check(Bar())
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301
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302 class Baz(int):
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303 def __bool__(self):
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304 return self
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305 check(Baz())
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306
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307 # __bool__() must return a bool not an int
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308 class Spam(int):
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309 def __bool__(self):
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310 return 1
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311 check(Spam())
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312
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313 class Eggs:
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314 def __len__(self):
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315 return -1
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316 self.assertRaises(ValueError, bool, Eggs())
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317
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318 def test_sane_len(self):
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319 # this test just tests our assumptions about __len__
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320 # this will start failing if __len__ changes assertions
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321 for badval in ['illegal', -1, 1 << 32]:
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322 class A:
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323 def __len__(self):
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324 return badval
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325 try:
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326 bool(A())
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327 except (Exception) as e_bool:
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328 try:
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329 len(A())
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330 except (Exception) as e_len:
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331 self.assertEqual(str(e_bool), str(e_len))
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332
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333 def test_real_and_imag(self):
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334 self.assertEqual(True.real, 1)
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335 self.assertEqual(True.imag, 0)
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336 self.assertIs(type(True.real), int)
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337 self.assertIs(type(True.imag), int)
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338 self.assertEqual(False.real, 0)
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339 self.assertEqual(False.imag, 0)
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340 self.assertIs(type(False.real), int)
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341 self.assertIs(type(False.imag), int)
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342
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343 def test_main():
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344 support.run_unittest(BoolTest)
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345
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346 if __name__ == "__main__":
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347 test_main()