Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_userstring.py @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents b36cb4602e21
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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a216fe79ae00 UserString class from Peter Funk <pf@artcom-gmbh.de>.
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1 #!/usr/bin/env python
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2 # UserString is a wrapper around the native builtin string type.
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3 # UserString instances should behave similar to builtin string objects.
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4
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5 import string
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6 from test import test_support, string_tests
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7 from UserString import UserString, MutableString
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8 import warnings
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9
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10 class UserStringTest(
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11 string_tests.CommonTest,
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12 string_tests.MixinStrUnicodeUserStringTest,
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13 string_tests.MixinStrStringUserStringTest,
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14 string_tests.MixinStrUserStringTest
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15 ):
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16
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17 type2test = UserString
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18
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19 # Overwrite the three testing methods, because UserString
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20 # can't cope with arguments propagated to UserString
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21 # (and we don't test with subclasses)
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22 def checkequal(self, result, object, methodname, *args):
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23 result = self.fixtype(result)
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24 object = self.fixtype(object)
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25 # we don't fix the arguments, because UserString can't cope with it
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26 realresult = getattr(object, methodname)(*args)
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27 self.assertEqual(
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28 result,
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29 realresult
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30 )
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31
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32 def checkraises(self, exc, object, methodname, *args):
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33 object = self.fixtype(object)
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34 # we don't fix the arguments, because UserString can't cope with it
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35 self.assertRaises(
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36 exc,
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37 getattr(object, methodname),
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38 *args
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39 )
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40
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41 def checkcall(self, object, methodname, *args):
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42 object = self.fixtype(object)
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43 # we don't fix the arguments, because UserString can't cope with it
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44 getattr(object, methodname)(*args)
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45
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46 class MutableStringTest(UserStringTest):
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47 type2test = MutableString
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48
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49 # MutableStrings can be hashed => deactivate test
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50 def test_hash(self):
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51 pass
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52
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53 def test_setitem(self):
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54 s = self.type2test("foo")
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55 self.assertRaises(IndexError, s.__setitem__, -4, "bar")
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56 self.assertRaises(IndexError, s.__setitem__, 3, "bar")
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57 s[-1] = "bar"
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58 self.assertEqual(s, "fobar")
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59 s[0] = "bar"
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60 self.assertEqual(s, "barobar")
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61
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62 def test_delitem(self):
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63 s = self.type2test("foo")
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64 self.assertRaises(IndexError, s.__delitem__, -4)
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65 self.assertRaises(IndexError, s.__delitem__, 3)
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66 del s[-1]
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67 self.assertEqual(s, "fo")
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68 del s[0]
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69 self.assertEqual(s, "o")
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70 del s[0]
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71 self.assertEqual(s, "")
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72
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73 def test_setslice(self):
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74 s = self.type2test("foo")
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75 s[:] = "bar"
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76 self.assertEqual(s, "bar")
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77 s[1:2] = "foo"
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78 self.assertEqual(s, "bfoor")
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79 s[1:-1] = UserString("a")
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80 self.assertEqual(s, "bar")
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81 s[0:10] = 42
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82 self.assertEqual(s, "42")
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83
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84 def test_delslice(self):
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85 s = self.type2test("foobar")
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86 del s[3:10]
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87 self.assertEqual(s, "foo")
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88 del s[-1:10]
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89 self.assertEqual(s, "fo")
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90
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91 def test_extended_set_del_slice(self):
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92 indices = (0, None, 1, 3, 19, 100, -1, -2, -31, -100)
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93 orig = string.ascii_letters + string.digits
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94 for start in indices:
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95 for stop in indices:
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96 # Use indices[1:] when MutableString can handle real
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97 # extended slices
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98 for step in (None, 1, -1):
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99 s = self.type2test(orig)
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100 L = list(orig)
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101 # Make sure we have a slice of exactly the right length,
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102 # but with (hopefully) different data.
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103 data = L[start:stop:step]
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104 data.reverse()
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105 L[start:stop:step] = data
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106 s[start:stop:step] = "".join(data)
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107 self.assertEqual(s, "".join(L))
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108
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109 del L[start:stop:step]
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110 del s[start:stop:step]
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111 self.assertEqual(s, "".join(L))
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112
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113 def test_immutable(self):
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114 s = self.type2test("foobar")
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115 s2 = s.immutable()
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116 self.assertEqual(s, s2)
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117 self.assertIsInstance(s2, UserString)
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118
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119 def test_iadd(self):
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120 s = self.type2test("foo")
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121 s += "bar"
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122 self.assertEqual(s, "foobar")
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123 s += UserString("baz")
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124 self.assertEqual(s, "foobarbaz")
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125 s += 42
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126 self.assertEqual(s, "foobarbaz42")
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127
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128 def test_imul(self):
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129 s = self.type2test("foo")
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130 s *= 1
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131 self.assertEqual(s, "foo")
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132 s *= 2
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133 self.assertEqual(s, "foofoo")
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134 s *= -1
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135 self.assertEqual(s, "")
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136
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137 def test_main():
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138 with warnings.catch_warnings():
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139 warnings.filterwarnings("ignore", ".*MutableString has been removed",
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140 DeprecationWarning)
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141 warnings.filterwarnings("ignore",
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142 ".*__(get|set|del)slice__ has been removed",
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143 DeprecationWarning)
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144 test_support.run_unittest(UserStringTest, MutableStringTest)
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145
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146 if __name__ == "__main__":
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147 test_main()