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1 import unittest |
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2 from test import test_support |
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3 import operator |
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4 from sys import maxint |
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5 maxsize = test_support.MAX_Py_ssize_t |
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6 minsize = -maxsize-1 |
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7 |
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8 class oldstyle: |
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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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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 |
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53 def test_subclasses(self): |
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54 r = range(10) |
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55 self.assertEqual(r[TrapInt(5):TrapInt(10)], r[5:10]) |
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56 self.assertEqual(r[TrapLong(5):TrapLong(10)], r[5:10]) |
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57 self.assertEqual(slice(TrapInt()).indices(0), (0,0,1)) |
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58 self.assertEqual(slice(TrapLong(0)).indices(0), (0,0,1)) |
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59 |
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60 def test_error(self): |
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61 self.o.ind = 'dumb' |
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62 self.n.ind = 'bad' |
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63 self.failUnlessRaises(TypeError, operator.index, self.o) |
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64 self.failUnlessRaises(TypeError, operator.index, self.n) |
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65 self.failUnlessRaises(TypeError, slice(self.o).indices, 0) |
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66 self.failUnlessRaises(TypeError, slice(self.n).indices, 0) |
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67 |
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68 |
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69 class SeqTestCase(unittest.TestCase): |
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70 # This test case isn't run directly. It just defines common tests |
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71 # to the different sequence types below |
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72 def setUp(self): |
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73 self.o = oldstyle() |
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74 self.n = newstyle() |
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75 self.o2 = oldstyle() |
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76 self.n2 = newstyle() |
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77 |
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78 def test_index(self): |
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79 self.o.ind = -2 |
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80 self.n.ind = 2 |
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81 self.assertEqual(self.seq[self.n], self.seq[2]) |
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82 self.assertEqual(self.seq[self.o], self.seq[-2]) |
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83 |
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84 def test_slice(self): |
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85 self.o.ind = 1 |
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86 self.o2.ind = 3 |
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87 self.n.ind = 2 |
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88 self.n2.ind = 4 |
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89 self.assertEqual(self.seq[self.o:self.o2], self.seq[1:3]) |
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90 self.assertEqual(self.seq[self.n:self.n2], self.seq[2:4]) |
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91 |
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92 def test_repeat(self): |
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93 self.o.ind = 3 |
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94 self.n.ind = 2 |
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95 self.assertEqual(self.seq * self.o, self.seq * 3) |
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96 self.assertEqual(self.seq * self.n, self.seq * 2) |
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97 self.assertEqual(self.o * self.seq, self.seq * 3) |
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98 self.assertEqual(self.n * self.seq, self.seq * 2) |
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99 |
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100 def test_wrappers(self): |
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101 self.o.ind = 4 |
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102 self.n.ind = 5 |
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103 self.assertEqual(self.seq.__getitem__(self.o), self.seq[4]) |
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104 self.assertEqual(self.seq.__mul__(self.o), self.seq * 4) |
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105 self.assertEqual(self.seq.__rmul__(self.o), self.seq * 4) |
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106 self.assertEqual(self.seq.__getitem__(self.n), self.seq[5]) |
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107 self.assertEqual(self.seq.__mul__(self.n), self.seq * 5) |
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108 self.assertEqual(self.seq.__rmul__(self.n), self.seq * 5) |
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109 |
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110 def test_subclasses(self): |
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111 self.assertEqual(self.seq[TrapInt()], self.seq[0]) |
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112 self.assertEqual(self.seq[TrapLong()], self.seq[0]) |
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113 |
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114 def test_error(self): |
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115 self.o.ind = 'dumb' |
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116 self.n.ind = 'bad' |
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117 indexobj = lambda x, obj: obj.seq[x] |
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118 self.failUnlessRaises(TypeError, indexobj, self.o, self) |
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119 self.failUnlessRaises(TypeError, indexobj, self.n, self) |
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120 sliceobj = lambda x, obj: obj.seq[x:] |
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121 self.failUnlessRaises(TypeError, sliceobj, self.o, self) |
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122 self.failUnlessRaises(TypeError, sliceobj, self.n, self) |
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123 |
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124 |
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125 class ListTestCase(SeqTestCase): |
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126 seq = [0,10,20,30,40,50] |
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127 |
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128 def test_setdelitem(self): |
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129 self.o.ind = -2 |
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130 self.n.ind = 2 |
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131 lst = list('ab!cdefghi!j') |
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132 del lst[self.o] |
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133 del lst[self.n] |
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134 lst[self.o] = 'X' |
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135 lst[self.n] = 'Y' |
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136 self.assertEqual(lst, list('abYdefghXj')) |
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137 |
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138 lst = [5, 6, 7, 8, 9, 10, 11] |
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139 lst.__setitem__(self.n, "here") |
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140 self.assertEqual(lst, [5, 6, "here", 8, 9, 10, 11]) |
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141 lst.__delitem__(self.n) |
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142 self.assertEqual(lst, [5, 6, 8, 9, 10, 11]) |
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143 |
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144 def test_inplace_repeat(self): |
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145 self.o.ind = 2 |
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146 self.n.ind = 3 |
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147 lst = [6, 4] |
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148 lst *= self.o |
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149 self.assertEqual(lst, [6, 4, 6, 4]) |
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150 lst *= self.n |
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151 self.assertEqual(lst, [6, 4, 6, 4] * 3) |
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152 |
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153 lst = [5, 6, 7, 8, 9, 11] |
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154 l2 = lst.__imul__(self.n) |
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155 self.assert_(l2 is lst) |
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156 self.assertEqual(lst, [5, 6, 7, 8, 9, 11] * 3) |
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157 |
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158 |
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159 class TupleTestCase(SeqTestCase): |
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160 seq = (0,10,20,30,40,50) |
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161 |
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162 class StringTestCase(SeqTestCase): |
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163 seq = "this is a test" |
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164 |
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165 class UnicodeTestCase(SeqTestCase): |
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166 seq = u"this is a test" |
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167 |
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168 |
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169 class XRangeTestCase(unittest.TestCase): |
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170 |
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171 def test_xrange(self): |
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172 n = newstyle() |
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173 n.ind = 5 |
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174 self.assertEqual(xrange(1, 20)[n], 6) |
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175 self.assertEqual(xrange(1, 20).__getitem__(n), 6) |
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176 |
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177 class OverflowTestCase(unittest.TestCase): |
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178 |
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179 def setUp(self): |
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180 self.pos = 2**100 |
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181 self.neg = -self.pos |
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182 |
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183 def test_large_longs(self): |
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184 self.assertEqual(self.pos.__index__(), self.pos) |
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185 self.assertEqual(self.neg.__index__(), self.neg) |
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186 |
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187 def _getitem_helper(self, base): |
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188 class GetItem(base): |
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189 def __len__(self): |
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190 return maxint #cannot return long here |
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191 def __getitem__(self, key): |
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192 return key |
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193 def __getslice__(self, i, j): |
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194 return i, j |
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195 x = GetItem() |
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196 self.assertEqual(x[self.pos], self.pos) |
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197 self.assertEqual(x[self.neg], self.neg) |
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198 self.assertEqual(x[self.neg:self.pos], (maxint+minsize, maxsize)) |
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199 self.assertEqual(x[self.neg:self.pos:1].indices(maxsize), (0, maxsize, 1)) |
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200 |
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201 def test_getitem(self): |
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202 self._getitem_helper(object) |
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203 |
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204 def test_getitem_classic(self): |
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205 class Empty: pass |
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206 self._getitem_helper(Empty) |
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207 |
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208 def test_sequence_repeat(self): |
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209 self.failUnlessRaises(OverflowError, lambda: "a" * self.pos) |
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210 self.failUnlessRaises(OverflowError, lambda: "a" * self.neg) |
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211 |
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212 |
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213 def test_main(): |
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214 test_support.run_unittest( |
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215 BaseTestCase, |
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216 ListTestCase, |
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217 TupleTestCase, |
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218 StringTestCase, |
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219 UnicodeTestCase, |
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220 XRangeTestCase, |
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221 OverflowTestCase, |
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222 ) |
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223 |
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224 if __name__ == "__main__": |
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225 test_main() |