Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_index.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents b36cb4602e21
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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fb7b52c4116c Checking in the test for PEP 357.
Armin Rigo <arigo@tunes.org>
parents: 36882
diff changeset
1 import unittest
fb7b52c4116c Checking in the test for PEP 357.
Armin Rigo <arigo@tunes.org>
parents: 36882
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2 from test import test_support
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3 import operator
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Neal Norwitz <nnorwitz@gmail.com>
parents: 37308
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4 from sys import maxint
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37d82bee7a16 Fix those parts in the testsuite that assumed that sys.maxint would cause overflow on x64. Now the testsuite is well behaved on that platform.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 39507
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5 maxsize = test_support.MAX_Py_ssize_t
37d82bee7a16 Fix those parts in the testsuite that assumed that sys.maxint would cause overflow on x64. Now the testsuite is well behaved on that platform.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 39507
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6 minsize = -maxsize-1
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7
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Armin Rigo <arigo@tunes.org>
parents: 36882
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8 class oldstyle:
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Armin Rigo <arigo@tunes.org>
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9 def __index__(self):
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10 return self.ind
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11
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12 class newstyle(object):
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13 def __index__(self):
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14 return self.ind
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15
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16 class TrapInt(int):
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17 def __index__(self):
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18 return self
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19
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20 class TrapLong(long):
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21 def __index__(self):
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22 return self
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23
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aaa04bfafc58 Minor bugs in the __index__ code (PEP 357), with tests.
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24 class BaseTestCase(unittest.TestCase):
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25 def setUp(self):
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26 self.o = oldstyle()
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27 self.n = newstyle()
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28
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29 def test_basic(self):
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30 self.o.ind = -2
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31 self.n.ind = 2
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32 self.assertEqual(operator.index(self.o), -2)
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33 self.assertEqual(operator.index(self.n), 2)
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34
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35 def test_slice(self):
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36 self.o.ind = 1
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37 self.n.ind = 2
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38 slc = slice(self.o, self.o, self.o)
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39 check_slc = slice(1, 1, 1)
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40 self.assertEqual(slc.indices(self.o), check_slc.indices(1))
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41 slc = slice(self.n, self.n, self.n)
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42 check_slc = slice(2, 2, 2)
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43 self.assertEqual(slc.indices(self.n), check_slc.indices(2))
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44
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45 def test_wrappers(self):
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46 self.o.ind = 4
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47 self.n.ind = 5
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48 self.assertEqual(6 .__index__(), 6)
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49 self.assertEqual(-7L.__index__(), -7)
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50 self.assertEqual(self.o.__index__(), 4)
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51 self.assertEqual(self.n.__index__(), 5)
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52 self.assertEqual(True.__index__(), 1)
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53 self.assertEqual(False.__index__(), 0)
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54
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4f90c1d530d9 Subclasses of int/long are allowed to define an __index__.
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parents: 39503
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55 def test_subclasses(self):
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56 r = range(10)
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57 self.assertEqual(r[TrapInt(5):TrapInt(10)], r[5:10])
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58 self.assertEqual(r[TrapLong(5):TrapLong(10)], r[5:10])
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59 self.assertEqual(slice(TrapInt()).indices(0), (0,0,1))
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60 self.assertEqual(slice(TrapLong(0)).indices(0), (0,0,1))
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61
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62 def test_error(self):
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63 self.o.ind = 'dumb'
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64 self.n.ind = 'bad'
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Benjamin Peterson <benjamin@python.org>
parents: 45468
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65 self.assertRaises(TypeError, operator.index, self.o)
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66 self.assertRaises(TypeError, operator.index, self.n)
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67 self.assertRaises(TypeError, slice(self.o).indices, 0)
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68 self.assertRaises(TypeError, slice(self.n).indices, 0)
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69
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70
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71 class SeqTestCase(unittest.TestCase):
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72 # This test case isn't run directly. It just defines common tests
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73 # to the different sequence types below
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74 def setUp(self):
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75 self.o = oldstyle()
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76 self.n = newstyle()
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77 self.o2 = oldstyle()
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78 self.n2 = newstyle()
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79
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80 def test_index(self):
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81 self.o.ind = -2
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82 self.n.ind = 2
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83 self.assertEqual(self.seq[self.n], self.seq[2])
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84 self.assertEqual(self.seq[self.o], self.seq[-2])
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85
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86 def test_slice(self):
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87 self.o.ind = 1
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88 self.o2.ind = 3
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89 self.n.ind = 2
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90 self.n2.ind = 4
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91 self.assertEqual(self.seq[self.o:self.o2], self.seq[1:3])
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92 self.assertEqual(self.seq[self.n:self.n2], self.seq[2:4])
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93
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94 def test_slice_bug7532(self):
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95 seqlen = len(self.seq)
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96 self.o.ind = int(seqlen * 1.5)
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97 self.n.ind = seqlen + 2
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98 self.assertEqual(self.seq[self.o:], self.seq[0:0])
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99 self.assertEqual(self.seq[:self.o], self.seq)
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100 self.assertEqual(self.seq[self.n:], self.seq[0:0])
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101 self.assertEqual(self.seq[:self.n], self.seq)
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102 if isinstance(self.seq, ClassicSeq):
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103 return
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104 # These tests fail for ClassicSeq (see bug #7532)
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105 self.o2.ind = -seqlen - 2
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106 self.n2.ind = -int(seqlen * 1.5)
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107 self.assertEqual(self.seq[self.o2:], self.seq)
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108 self.assertEqual(self.seq[:self.o2], self.seq[0:0])
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109 self.assertEqual(self.seq[self.n2:], self.seq)
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110 self.assertEqual(self.seq[:self.n2], self.seq[0:0])
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111
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112 def test_repeat(self):
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113 self.o.ind = 3
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114 self.n.ind = 2
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115 self.assertEqual(self.seq * self.o, self.seq * 3)
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116 self.assertEqual(self.seq * self.n, self.seq * 2)
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117 self.assertEqual(self.o * self.seq, self.seq * 3)
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118 self.assertEqual(self.n * self.seq, self.seq * 2)
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119
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120 def test_wrappers(self):
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121 self.o.ind = 4
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122 self.n.ind = 5
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123 self.assertEqual(self.seq.__getitem__(self.o), self.seq[4])
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124 self.assertEqual(self.seq.__mul__(self.o), self.seq * 4)
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125 self.assertEqual(self.seq.__rmul__(self.o), self.seq * 4)
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126 self.assertEqual(self.seq.__getitem__(self.n), self.seq[5])
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127 self.assertEqual(self.seq.__mul__(self.n), self.seq * 5)
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128 self.assertEqual(self.seq.__rmul__(self.n), self.seq * 5)
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129
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130 def test_subclasses(self):
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131 self.assertEqual(self.seq[TrapInt()], self.seq[0])
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132 self.assertEqual(self.seq[TrapLong()], self.seq[0])
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133
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134 def test_error(self):
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135 self.o.ind = 'dumb'
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136 self.n.ind = 'bad'
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137 indexobj = lambda x, obj: obj.seq[x]
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138 self.assertRaises(TypeError, indexobj, self.o, self)
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139 self.assertRaises(TypeError, indexobj, self.n, self)
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140 sliceobj = lambda x, obj: obj.seq[x:]
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141 self.assertRaises(TypeError, sliceobj, self.o, self)
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142 self.assertRaises(TypeError, sliceobj, self.n, self)
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143
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144
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145 class ListTestCase(SeqTestCase):
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146 seq = [0,10,20,30,40,50]
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147
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148 def test_setdelitem(self):
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149 self.o.ind = -2
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150 self.n.ind = 2
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151 lst = list('ab!cdefghi!j')
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152 del lst[self.o]
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153 del lst[self.n]
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154 lst[self.o] = 'X'
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155 lst[self.n] = 'Y'
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156 self.assertEqual(lst, list('abYdefghXj'))
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157
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158 lst = [5, 6, 7, 8, 9, 10, 11]
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159 lst.__setitem__(self.n, "here")
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160 self.assertEqual(lst, [5, 6, "here", 8, 9, 10, 11])
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161 lst.__delitem__(self.n)
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162 self.assertEqual(lst, [5, 6, 8, 9, 10, 11])
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163
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164 def test_inplace_repeat(self):
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165 self.o.ind = 2
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166 self.n.ind = 3
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167 lst = [6, 4]
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168 lst *= self.o
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169 self.assertEqual(lst, [6, 4, 6, 4])
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170 lst *= self.n
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171 self.assertEqual(lst, [6, 4, 6, 4] * 3)
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172
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173 lst = [5, 6, 7, 8, 9, 11]
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174 l2 = lst.__imul__(self.n)
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175 self.assertIs(l2, lst)
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176 self.assertEqual(lst, [5, 6, 7, 8, 9, 11] * 3)
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177
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178
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179 class _BaseSeq:
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180
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181 def __init__(self, iterable):
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182 self._list = list(iterable)
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183
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184 def __repr__(self):
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185 return repr(self._list)
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186
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187 def __eq__(self, other):
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188 return self._list == other
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189
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190 def __len__(self):
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191 return len(self._list)
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192
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193 def __mul__(self, n):
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194 return self.__class__(self._list*n)
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195 __rmul__ = __mul__
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196
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197 def __getitem__(self, index):
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198 return self._list[index]
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199
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200
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201 class _GetSliceMixin:
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202
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203 def __getslice__(self, i, j):
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204 return self._list.__getslice__(i, j)
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205
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206
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207 class ClassicSeq(_BaseSeq): pass
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208 class NewSeq(_BaseSeq, object): pass
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209 class ClassicSeqDeprecated(_GetSliceMixin, ClassicSeq): pass
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210 class NewSeqDeprecated(_GetSliceMixin, NewSeq): pass
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211
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212
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213 class TupleTestCase(SeqTestCase):
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214 seq = (0,10,20,30,40,50)
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215
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216 class StringTestCase(SeqTestCase):
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217 seq = "this is a test"
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218
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219 class ByteArrayTestCase(SeqTestCase):
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220 seq = bytearray("this is a test")
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221
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222 class UnicodeTestCase(SeqTestCase):
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223 seq = u"this is a test"
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224
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225 class ClassicSeqTestCase(SeqTestCase):
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226 seq = ClassicSeq((0,10,20,30,40,50))
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227
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228 class NewSeqTestCase(SeqTestCase):
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229 seq = NewSeq((0,10,20,30,40,50))
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230
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231 class ClassicSeqDeprecatedTestCase(SeqTestCase):
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232 seq = ClassicSeqDeprecated((0,10,20,30,40,50))
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233
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234 class NewSeqDeprecatedTestCase(SeqTestCase):
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235 seq = NewSeqDeprecated((0,10,20,30,40,50))
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236
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237
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238 class XRangeTestCase(unittest.TestCase):
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239
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240 def test_xrange(self):
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241 n = newstyle()
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242 n.ind = 5
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243 self.assertEqual(xrange(1, 20)[n], 6)
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244 self.assertEqual(xrange(1, 20).__getitem__(n), 6)
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245
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246 class OverflowTestCase(unittest.TestCase):
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247
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248 def setUp(self):
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249 self.pos = 2**100
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250 self.neg = -self.pos
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251
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252 def test_large_longs(self):
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253 self.assertEqual(self.pos.__index__(), self.pos)
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254 self.assertEqual(self.neg.__index__(), self.neg)
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255
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256 def _getitem_helper(self, base):
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257 class GetItem(base):
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258 def __len__(self):
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259 return maxint # cannot return long here
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260 def __getitem__(self, key):
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261 return key
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262 x = GetItem()
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263 self.assertEqual(x[self.pos], self.pos)
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264 self.assertEqual(x[self.neg], self.neg)
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265 self.assertEqual(x[self.neg:self.pos].indices(maxsize),
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266 (0, maxsize, 1))
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267 self.assertEqual(x[self.neg:self.pos:1].indices(maxsize),
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268 (0, maxsize, 1))
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269
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270 def _getslice_helper_deprecated(self, base):
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271 class GetItem(base):
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272 def __len__(self):
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273 return maxint # cannot return long here
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274 def __getitem__(self, key):
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275 return key
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276 def __getslice__(self, i, j):
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277 return i, j
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278 x = GetItem()
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279 self.assertEqual(x[self.pos], self.pos)
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280 self.assertEqual(x[self.neg], self.neg)
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281 self.assertEqual(x[self.neg:self.pos], (maxint+minsize, maxsize))
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282 self.assertEqual(x[self.neg:self.pos:1].indices(maxsize),
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283 (0, maxsize, 1))
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284
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285 def test_getitem(self):
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286 self._getitem_helper(object)
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287 with test_support.check_py3k_warnings():
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288 self._getslice_helper_deprecated(object)
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289
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290 def test_getitem_classic(self):
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291 class Empty: pass
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292 # XXX This test fails (see bug #7532)
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293 #self._getitem_helper(Empty)
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294 with test_support.check_py3k_warnings():
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295 self._getslice_helper_deprecated(Empty)
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296
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297 def test_sequence_repeat(self):
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298 self.assertRaises(OverflowError, lambda: "a" * self.pos)
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299 self.assertRaises(OverflowError, lambda: "a" * self.neg)
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300
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301
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302 def test_main():
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303 test_support.run_unittest(
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304 BaseTestCase,
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305 ListTestCase,
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306 TupleTestCase,
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307 ByteArrayTestCase,
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308 StringTestCase,
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309 UnicodeTestCase,
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310 ClassicSeqTestCase,
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311 NewSeqTestCase,
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312 XRangeTestCase,
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313 OverflowTestCase,
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314 )
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315 with test_support.check_py3k_warnings():
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316 test_support.run_unittest(
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317 ClassicSeqDeprecatedTestCase,
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318 NewSeqDeprecatedTestCase,
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319 )
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320
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321
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322 if __name__ == "__main__":
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323 test_main()