annotate Lib/test/test_bytes.py @ 47949:6c1237cb5aaa legacy-trunk

Re-word
author Andrew M. Kuchling <amk@amk.ca>
date Sun, 13 Jul 2008 21:43:25 +0000
parents 5341b30b1812
children fbf165a78953
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1 """Unit tests for the bytes and bytearray types.
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2
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3 XXX This is a mess. Common tests should be moved to buffer_tests.py,
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4 which itself ought to be unified with string_tests.py (and the latter
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5 should be modernized).
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6 """
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7
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8 import os
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9 import re
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10 import sys
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11 import copy
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12 import pickle
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13 import tempfile
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14 import unittest
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15 import warnings
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16 import test.test_support
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17 import test.string_tests
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18 import test.buffer_tests
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21 class BaseBytesTest(unittest.TestCase):
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23 def setUp(self):
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24 self.warning_filters = warnings.filters[:]
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25
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26 def tearDown(self):
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27 warnings.filters = self.warning_filters
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28
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29 def test_basics(self):
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30 b = self.type2test()
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31 self.assertEqual(type(b), self.type2test)
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32 self.assertEqual(b.__class__, self.type2test)
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33
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34 def test_empty_sequence(self):
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35 b = self.type2test()
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36 self.assertEqual(len(b), 0)
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37 self.assertRaises(IndexError, lambda: b[0])
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38 self.assertRaises(IndexError, lambda: b[1])
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39 self.assertRaises(IndexError, lambda: b[sys.maxint])
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40 self.assertRaises(IndexError, lambda: b[sys.maxint+1])
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41 self.assertRaises(IndexError, lambda: b[10**100])
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42 self.assertRaises(IndexError, lambda: b[-1])
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43 self.assertRaises(IndexError, lambda: b[-2])
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44 self.assertRaises(IndexError, lambda: b[-sys.maxint])
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45 self.assertRaises(IndexError, lambda: b[-sys.maxint-1])
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46 self.assertRaises(IndexError, lambda: b[-sys.maxint-2])
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47 self.assertRaises(IndexError, lambda: b[-10**100])
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48
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49 def test_from_list(self):
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50 ints = list(range(256))
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51 b = self.type2test(i for i in ints)
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52 self.assertEqual(len(b), 256)
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53 self.assertEqual(list(b), ints)
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54
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55 def test_from_index(self):
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56 class C:
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57 def __init__(self, i=0):
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58 self.i = i
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59 def __index__(self):
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60 return self.i
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61 b = self.type2test([C(), C(1), C(254), C(255)])
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62 self.assertEqual(list(b), [0, 1, 254, 255])
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63 self.assertRaises(ValueError, bytearray, [C(-1)])
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64 self.assertRaises(ValueError, bytearray, [C(256)])
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65
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66 def test_from_ssize(self):
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67 self.assertEqual(bytearray(0), b'')
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68 self.assertEqual(bytearray(1), b'\x00')
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69 self.assertEqual(bytearray(5), b'\x00\x00\x00\x00\x00')
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70 self.assertRaises(ValueError, bytearray, -1)
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71
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72 self.assertEqual(bytearray('0', 'ascii'), b'0')
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73 self.assertEqual(bytearray(b'0'), b'0')
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74
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75 def test_constructor_type_errors(self):
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76 self.assertRaises(TypeError, self.type2test, 0.0)
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77 class C:
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78 pass
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79 self.assertRaises(TypeError, self.type2test, ["0"])
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80 self.assertRaises(TypeError, self.type2test, [0.0])
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81 self.assertRaises(TypeError, self.type2test, [None])
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82 self.assertRaises(TypeError, self.type2test, [C()])
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83
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84 def test_constructor_value_errors(self):
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85 self.assertRaises(ValueError, self.type2test, [-1])
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86 self.assertRaises(ValueError, self.type2test, [-sys.maxint])
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87 self.assertRaises(ValueError, self.type2test, [-sys.maxint-1])
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88 self.assertRaises(ValueError, self.type2test, [-sys.maxint-2])
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89 self.assertRaises(ValueError, self.type2test, [-10**100])
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90 self.assertRaises(ValueError, self.type2test, [256])
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91 self.assertRaises(ValueError, self.type2test, [257])
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92 self.assertRaises(ValueError, self.type2test, [sys.maxint])
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93 self.assertRaises(ValueError, self.type2test, [sys.maxint+1])
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94 self.assertRaises(ValueError, self.type2test, [10**100])
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95
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96 def test_compare(self):
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97 b1 = self.type2test([1, 2, 3])
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98 b2 = self.type2test([1, 2, 3])
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99 b3 = self.type2test([1, 3])
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100
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101 self.assertEqual(b1, b2)
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102 self.failUnless(b2 != b3)
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103 self.failUnless(b1 <= b2)
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104 self.failUnless(b1 <= b3)
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105 self.failUnless(b1 < b3)
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106 self.failUnless(b1 >= b2)
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107 self.failUnless(b3 >= b2)
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108 self.failUnless(b3 > b2)
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109
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110 self.failIf(b1 != b2)
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111 self.failIf(b2 == b3)
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112 self.failIf(b1 > b2)
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113 self.failIf(b1 > b3)
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114 self.failIf(b1 >= b3)
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115 self.failIf(b1 < b2)
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116 self.failIf(b3 < b2)
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117 self.failIf(b3 <= b2)
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118
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119 def test_compare_to_str(self):
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120 warnings.simplefilter('ignore', BytesWarning)
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121 # Byte comparisons with unicode should always fail!
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122 # Test this for all expected byte orders and Unicode character sizes
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123 self.assertEqual(self.type2test(b"\0a\0b\0c") == u"abc", False)
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124 self.assertEqual(self.type2test(b"\0\0\0a\0\0\0b\0\0\0c") == u"abc", False)
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125 self.assertEqual(self.type2test(b"a\0b\0c\0") == u"abc", False)
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126 self.assertEqual(self.type2test(b"a\0\0\0b\0\0\0c\0\0\0") == u"abc", False)
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127 self.assertEqual(self.type2test() == unicode(), False)
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128 self.assertEqual(self.type2test() != unicode(), True)
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129
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130 def test_reversed(self):
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131 input = list(map(ord, "Hello"))
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132 b = self.type2test(input)
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133 output = list(reversed(b))
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134 input.reverse()
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135 self.assertEqual(output, input)
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136
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137 def test_getslice(self):
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138 def by(s):
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139 return self.type2test(map(ord, s))
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140 b = by("Hello, world")
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141
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142 self.assertEqual(b[:5], by("Hello"))
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143 self.assertEqual(b[1:5], by("ello"))
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144 self.assertEqual(b[5:7], by(", "))
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145 self.assertEqual(b[7:], by("world"))
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146 self.assertEqual(b[7:12], by("world"))
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147 self.assertEqual(b[7:100], by("world"))
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148
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149 self.assertEqual(b[:-7], by("Hello"))
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150 self.assertEqual(b[-11:-7], by("ello"))
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151 self.assertEqual(b[-7:-5], by(", "))
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152 self.assertEqual(b[-5:], by("world"))
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153 self.assertEqual(b[-5:12], by("world"))
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154 self.assertEqual(b[-5:100], by("world"))
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155 self.assertEqual(b[-100:5], by("Hello"))
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156
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157 def test_extended_getslice(self):
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158 # Test extended slicing by comparing with list slicing.
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159 L = list(range(255))
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160 b = self.type2test(L)
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161 indices = (0, None, 1, 3, 19, 100, -1, -2, -31, -100)
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162 for start in indices:
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163 for stop in indices:
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164 # Skip step 0 (invalid)
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165 for step in indices[1:]:
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166 self.assertEqual(b[start:stop:step], self.type2test(L[start:stop:step]))
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167
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168 def test_encoding(self):
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169 sample = u"Hello world\n\u1234\u5678\u9abc\udef0"
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170 for enc in ("utf8", "utf16"):
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171 b = self.type2test(sample, enc)
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172 self.assertEqual(b, self.type2test(sample.encode(enc)))
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173 self.assertRaises(UnicodeEncodeError, self.type2test, sample, "latin1")
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174 b = self.type2test(sample, "latin1", "ignore")
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175 self.assertEqual(b, self.type2test(sample[:-4], "utf-8"))
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176
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177 def test_decode(self):
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178 sample = u"Hello world\n\u1234\u5678\u9abc\def0\def0"
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179 for enc in ("utf8", "utf16"):
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180 b = self.type2test(sample, enc)
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181 self.assertEqual(b.decode(enc), sample)
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182 sample = u"Hello world\n\x80\x81\xfe\xff"
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183 b = self.type2test(sample, "latin1")
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184 self.assertRaises(UnicodeDecodeError, b.decode, "utf8")
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185 self.assertEqual(b.decode("utf8", "ignore"), "Hello world\n")
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186
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187 def test_from_int(self):
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188 b = self.type2test(0)
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189 self.assertEqual(b, self.type2test())
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190 b = self.type2test(10)
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191 self.assertEqual(b, self.type2test([0]*10))
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192 b = self.type2test(10000)
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193 self.assertEqual(b, self.type2test([0]*10000))
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194
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195 def test_concat(self):
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196 b1 = self.type2test(b"abc")
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197 b2 = self.type2test(b"def")
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198 self.assertEqual(b1 + b2, b"abcdef")
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199 self.assertEqual(b1 + bytes(b"def"), b"abcdef")
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200 self.assertEqual(bytes(b"def") + b1, b"defabc")
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201 self.assertRaises(TypeError, lambda: b1 + u"def")
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202 self.assertRaises(TypeError, lambda: u"abc" + b2)
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203
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204 def test_repeat(self):
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205 for b in b"abc", self.type2test(b"abc"):
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206 self.assertEqual(b * 3, b"abcabcabc")
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207 self.assertEqual(b * 0, b"")
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208 self.assertEqual(b * -1, b"")
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209 self.assertRaises(TypeError, lambda: b * 3.14)
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210 self.assertRaises(TypeError, lambda: 3.14 * b)
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211 # XXX Shouldn't bytes and bytearray agree on what to raise?
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212 self.assertRaises((OverflowError, MemoryError),
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213 lambda: b * sys.maxint)
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214
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215 def test_repeat_1char(self):
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216 self.assertEqual(self.type2test(b'x')*100, self.type2test([ord('x')]*100))
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217
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218 def test_contains(self):
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219 b = self.type2test(b"abc")
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220 self.failUnless(ord('a') in b)
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221 self.failUnless(int(ord('a')) in b)
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222 self.failIf(200 in b)
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223 self.failIf(200 in b)
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224 self.assertRaises(ValueError, lambda: 300 in b)
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225 self.assertRaises(ValueError, lambda: -1 in b)
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226 self.assertRaises(TypeError, lambda: None in b)
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227 self.assertRaises(TypeError, lambda: float(ord('a')) in b)
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228 self.assertRaises(TypeError, lambda: u"a" in b)
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229 for f in bytes, bytearray:
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230 self.failUnless(f(b"") in b)
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231 self.failUnless(f(b"a") in b)
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232 self.failUnless(f(b"b") in b)
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233 self.failUnless(f(b"c") in b)
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234 self.failUnless(f(b"ab") in b)
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235 self.failUnless(f(b"bc") in b)
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236 self.failUnless(f(b"abc") in b)
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237 self.failIf(f(b"ac") in b)
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238 self.failIf(f(b"d") in b)
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239 self.failIf(f(b"dab") in b)
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240 self.failIf(f(b"abd") in b)
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241
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242 def test_fromhex(self):
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243 self.assertRaises(TypeError, self.type2test.fromhex)
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244 self.assertRaises(TypeError, self.type2test.fromhex, 1)
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245 self.assertEquals(self.type2test.fromhex(u''), self.type2test())
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246 b = bytearray([0x1a, 0x2b, 0x30])
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247 self.assertEquals(self.type2test.fromhex(u'1a2B30'), b)
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248 self.assertEquals(self.type2test.fromhex(u' 1A 2B 30 '), b)
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249 self.assertEquals(self.type2test.fromhex(u'0000'), b'\0\0')
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250 self.assertRaises(TypeError, self.type2test.fromhex, b'1B')
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251 self.assertRaises(ValueError, self.type2test.fromhex, u'a')
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252 self.assertRaises(ValueError, self.type2test.fromhex, u'rt')
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253 self.assertRaises(ValueError, self.type2test.fromhex, u'1a b cd')
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254 self.assertRaises(ValueError, self.type2test.fromhex, u'\x00')
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255 self.assertRaises(ValueError, self.type2test.fromhex, u'12 \x00 34')
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256
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257 def test_join(self):
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258 self.assertEqual(self.type2test(b"").join([]), b"")
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259 self.assertEqual(self.type2test(b"").join([b""]), b"")
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260 for lst in [[b"abc"], [b"a", b"bc"], [b"ab", b"c"], [b"a", b"b", b"c"]]:
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261 lst = list(map(self.type2test, lst))
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262 self.assertEqual(self.type2test(b"").join(lst), b"abc")
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263 self.assertEqual(self.type2test(b"").join(tuple(lst)), b"abc")
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264 self.assertEqual(self.type2test(b"").join(iter(lst)), b"abc")
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265 self.assertEqual(self.type2test(b".").join([b"ab", b"cd"]), b"ab.cd")
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266 # XXX more...
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267
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268 def test_index(self):
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269 b = self.type2test(b'parrot')
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270 self.assertEqual(b.index('p'), 0)
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271 self.assertEqual(b.index('rr'), 2)
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272 self.assertEqual(b.index('t'), 5)
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273 self.assertRaises(ValueError, lambda: b.index('w'))
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274
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275 def test_count(self):
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276 b = self.type2test(b'mississippi')
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277 self.assertEqual(b.count(b'i'), 4)
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278 self.assertEqual(b.count(b'ss'), 2)
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279 self.assertEqual(b.count(b'w'), 0)
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280
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281 def test_startswith(self):
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282 b = self.type2test(b'hello')
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283 self.assertFalse(self.type2test().startswith(b"anything"))
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284 self.assertTrue(b.startswith(b"hello"))
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285 self.assertTrue(b.startswith(b"hel"))
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286 self.assertTrue(b.startswith(b"h"))
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287 self.assertFalse(b.startswith(b"hellow"))
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288 self.assertFalse(b.startswith(b"ha"))
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289
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290 def test_endswith(self):
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291 b = self.type2test(b'hello')
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292 self.assertFalse(bytearray().endswith(b"anything"))
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293 self.assertTrue(b.endswith(b"hello"))
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294 self.assertTrue(b.endswith(b"llo"))
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295 self.assertTrue(b.endswith(b"o"))
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296 self.assertFalse(b.endswith(b"whello"))
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297 self.assertFalse(b.endswith(b"no"))
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298
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299 def test_find(self):
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300 b = self.type2test(b'mississippi')
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301 self.assertEqual(b.find(b'ss'), 2)
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302 self.assertEqual(b.find(b'ss', 3), 5)
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303 self.assertEqual(b.find(b'ss', 1, 7), 2)
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304 self.assertEqual(b.find(b'ss', 1, 3), -1)
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305 self.assertEqual(b.find(b'w'), -1)
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306 self.assertEqual(b.find(b'mississippian'), -1)
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307
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308 def test_rfind(self):
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309 b = self.type2test(b'mississippi')
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310 self.assertEqual(b.rfind(b'ss'), 5)
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311 self.assertEqual(b.rfind(b'ss', 3), 5)
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312 self.assertEqual(b.rfind(b'ss', 0, 6), 2)
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313 self.assertEqual(b.rfind(b'w'), -1)
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314 self.assertEqual(b.rfind(b'mississippian'), -1)
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315
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316 def test_index(self):
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317 b = self.type2test(b'world')
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318 self.assertEqual(b.index(b'w'), 0)
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319 self.assertEqual(b.index(b'orl'), 1)
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320 self.assertRaises(ValueError, b.index, b'worm')
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321 self.assertRaises(ValueError, b.index, b'ldo')
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322
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323 def test_rindex(self):
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324 # XXX could be more rigorous
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325 b = self.type2test(b'world')
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326 self.assertEqual(b.rindex(b'w'), 0)
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327 self.assertEqual(b.rindex(b'orl'), 1)
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328 self.assertRaises(ValueError, b.rindex, b'worm')
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329 self.assertRaises(ValueError, b.rindex, b'ldo')
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330
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331 def test_replace(self):
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332 b = self.type2test(b'mississippi')
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333 self.assertEqual(b.replace(b'i', b'a'), b'massassappa')
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334 self.assertEqual(b.replace(b'ss', b'x'), b'mixixippi')
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335
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336 def test_split(self):
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337 b = self.type2test(b'mississippi')
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338 self.assertEqual(b.split(b'i'), [b'm', b'ss', b'ss', b'pp', b''])
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339 self.assertEqual(b.split(b'ss'), [b'mi', b'i', b'ippi'])
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340 self.assertEqual(b.split(b'w'), [b])
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341
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342 def test_split_whitespace(self):
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343 for b in (b' arf barf ', b'arf\tbarf', b'arf\nbarf', b'arf\rbarf',
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344 b'arf\fbarf', b'arf\vbarf'):
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345 b = self.type2test(b)
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346 self.assertEqual(b.split(), [b'arf', b'barf'])
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347 self.assertEqual(b.split(None), [b'arf', b'barf'])
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348 self.assertEqual(b.split(None, 2), [b'arf', b'barf'])
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349 for b in (b'a\x1Cb', b'a\x1Db', b'a\x1Eb', b'a\x1Fb'):
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350 b = self.type2test(b)
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351 self.assertEqual(b.split(), [b])
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352 self.assertEqual(self.type2test(b' a bb c ').split(None, 0), [b'a bb c '])
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353 self.assertEqual(self.type2test(b' a bb c ').split(None, 1), [b'a', b'bb c '])
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354 self.assertEqual(self.type2test(b' a bb c ').split(None, 2), [b'a', b'bb', b'c '])
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355 self.assertEqual(self.type2test(b' a bb c ').split(None, 3), [b'a', b'bb', b'c'])
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356
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357 def test_split_string_error(self):
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358 self.assertRaises(TypeError, self.type2test(b'a b').split, u' ')
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359
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360 def test_rsplit(self):
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361 b = self.type2test(b'mississippi')
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362 self.assertEqual(b.rsplit(b'i'), [b'm', b'ss', b'ss', b'pp', b''])
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363 self.assertEqual(b.rsplit(b'ss'), [b'mi', b'i', b'ippi'])
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364 self.assertEqual(b.rsplit(b'w'), [b])
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365
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366 def test_rsplit_whitespace(self):
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367 for b in (b' arf barf ', b'arf\tbarf', b'arf\nbarf', b'arf\rbarf',
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368 b'arf\fbarf', b'arf\vbarf'):
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369 b = self.type2test(b)
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370 self.assertEqual(b.rsplit(), [b'arf', b'barf'])
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371 self.assertEqual(b.rsplit(None), [b'arf', b'barf'])
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372 self.assertEqual(b.rsplit(None, 2), [b'arf', b'barf'])
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373 self.assertEqual(self.type2test(b' a bb c ').rsplit(None, 0), [b' a bb c'])
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374 self.assertEqual(self.type2test(b' a bb c ').rsplit(None, 1), [b' a bb', b'c'])
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375 self.assertEqual(self.type2test(b' a bb c ').rsplit(None, 2), [b' a', b'bb', b'c'])
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376 self.assertEqual(self.type2test(b' a bb c ').rsplit(None, 3), [b'a', b'bb', b'c'])
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377
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378 def test_rsplit_string_error(self):
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379 self.assertRaises(TypeError, self.type2test(b'a b').rsplit, u' ')
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380
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381 def test_rsplit_unicodewhitespace(self):
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382 b = self.type2test(b"\x09\x0A\x0B\x0C\x0D\x1C\x1D\x1E\x1F")
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383 self.assertEqual(b.split(), [b'\x1c\x1d\x1e\x1f'])
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384 self.assertEqual(b.rsplit(), [b'\x1c\x1d\x1e\x1f'])
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385
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386 def test_partition(self):
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387 b = self.type2test(b'mississippi')
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388 self.assertEqual(b.partition(b'ss'), (b'mi', b'ss', b'issippi'))
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389 self.assertEqual(b.rpartition(b'w'), (b'', b'', b'mississippi'))
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390
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391 def test_rpartition(self):
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392 b = self.type2test(b'mississippi')
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393 self.assertEqual(b.rpartition(b'ss'), (b'missi', b'ss', b'ippi'))
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394 self.assertEqual(b.rpartition(b'i'), (b'mississipp', b'i', b''))
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395
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396 def test_pickling(self):
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397 for proto in range(pickle.HIGHEST_PROTOCOL):
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398 for b in b"", b"a", b"abc", b"\xffab\x80", b"\0\0\377\0\0":
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399 b = self.type2test(b)
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400 ps = pickle.dumps(b, proto)
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401 q = pickle.loads(ps)
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402 self.assertEqual(b, q)
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403
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404 def test_strip(self):
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405 b = self.type2test(b'mississippi')
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406 self.assertEqual(b.strip(b'i'), b'mississipp')
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407 self.assertEqual(b.strip(b'm'), b'ississippi')
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408 self.assertEqual(b.strip(b'pi'), b'mississ')
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409 self.assertEqual(b.strip(b'im'), b'ssissipp')
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410 self.assertEqual(b.strip(b'pim'), b'ssiss')
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411 self.assertEqual(b.strip(b), b'')
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412
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413 def test_lstrip(self):
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414 b = self.type2test(b'mississippi')
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415 self.assertEqual(b.lstrip(b'i'), b'mississippi')
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416 self.assertEqual(b.lstrip(b'm'), b'ississippi')
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417 self.assertEqual(b.lstrip(b'pi'), b'mississippi')
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418 self.assertEqual(b.lstrip(b'im'), b'ssissippi')
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419 self.assertEqual(b.lstrip(b'pim'), b'ssissippi')
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420
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421 def test_rstrip(self):
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422 b = self.type2test(b'mississippi')
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423 self.assertEqual(b.rstrip(b'i'), b'mississipp')
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424 self.assertEqual(b.rstrip(b'm'), b'mississippi')
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425 self.assertEqual(b.rstrip(b'pi'), b'mississ')
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426 self.assertEqual(b.rstrip(b'im'), b'mississipp')
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427 self.assertEqual(b.rstrip(b'pim'), b'mississ')
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428
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diff changeset
429 def test_strip_whitespace(self):
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430 b = self.type2test(b' \t\n\r\f\vabc \t\n\r\f\v')
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431 self.assertEqual(b.strip(), b'abc')
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432 self.assertEqual(b.lstrip(), b'abc \t\n\r\f\v')
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433 self.assertEqual(b.rstrip(), b' \t\n\r\f\vabc')
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434
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diff changeset
435 def XXXtest_strip_bytearray(self):
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436 # XXX memoryview not available
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437 self.assertEqual(self.type2test(b'abc').strip(memoryview(b'ac')), b'b')
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diff changeset
438 self.assertEqual(self.type2test(b'abc').lstrip(memoryview(b'ac')), b'bc')
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439 self.assertEqual(self.type2test(b'abc').rstrip(memoryview(b'ac')), b'ab')
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440
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441 def test_strip_string_error(self):
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442 self.assertRaises(TypeError, self.type2test(b'abc').strip, u'b')
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443 self.assertRaises(TypeError, self.type2test(b'abc').lstrip, u'b')
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444 self.assertRaises(TypeError, self.type2test(b'abc').rstrip, u'b')
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445
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446 def test_ord(self):
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447 b = self.type2test(b'\0A\x7f\x80\xff')
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448 self.assertEqual([ord(b[i:i+1]) for i in range(len(b))],
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449 [0, 65, 127, 128, 255])
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450
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451
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452 class ByteArrayTest(BaseBytesTest):
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453 type2test = bytearray
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454
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455 def test_nohash(self):
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456 self.assertRaises(TypeError, hash, bytearray())
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457
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458 def test_bytearray_api(self):
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459 short_sample = b"Hello world\n"
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460 sample = short_sample + b"\0"*(20 - len(short_sample))
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461 tfn = tempfile.mktemp()
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462 try:
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463 # Prepare
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464 with open(tfn, "wb") as f:
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465 f.write(short_sample)
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466 # Test readinto
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467 with open(tfn, "rb") as f:
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468 b = bytearray(20)
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469 n = f.readinto(b)
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470 self.assertEqual(n, len(short_sample))
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471 # Python 2.x
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472 b_sample = (ord(s) for s in sample)
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473 self.assertEqual(list(b), list(b_sample))
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474 # Test writing in binary mode
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475 with open(tfn, "wb") as f:
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476 f.write(b)
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477 with open(tfn, "rb") as f:
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478 self.assertEqual(f.read(), sample)
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479 # Text mode is ambiguous; don't test
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480 finally:
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diff changeset
481 try:
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482 os.remove(tfn)
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483 except os.error:
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484 pass
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485
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diff changeset
486 def test_reverse(self):
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487 b = bytearray(b'hello')
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488 self.assertEqual(b.reverse(), None)
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489 self.assertEqual(b, b'olleh')
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490 b = bytearray(b'hello1') # test even number of items
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491 b.reverse()
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492 self.assertEqual(b, b'1olleh')
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493 b = bytearray()
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494 b.reverse()
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495 self.assertFalse(b)
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496
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diff changeset
497 def test_regexps(self):
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498 def by(s):
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499 return bytearray(map(ord, s))
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500 b = by("Hello, world")
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501 self.assertEqual(re.findall(r"\w+", b), [by("Hello"), by("world")])
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502
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503 def test_setitem(self):
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504 b = bytearray([1, 2, 3])
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505 b[1] = 100
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506 self.assertEqual(b, bytearray([1, 100, 3]))
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507 b[-1] = 200
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508 self.assertEqual(b, bytearray([1, 100, 200]))
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509 class C:
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510 def __init__(self, i=0):
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511 self.i = i
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512 def __index__(self):
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513 return self.i
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diff changeset
514 b[0] = C(10)
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diff changeset
515 self.assertEqual(b, bytearray([10, 100, 200]))
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diff changeset
516 try:
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diff changeset
517 b[3] = 0
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diff changeset
518 self.fail("Didn't raise IndexError")
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diff changeset
519 except IndexError:
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parents:
diff changeset
520 pass
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diff changeset
521 try:
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diff changeset
522 b[-10] = 0
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diff changeset
523 self.fail("Didn't raise IndexError")
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diff changeset
524 except IndexError:
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parents:
diff changeset
525 pass
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parents:
diff changeset
526 try:
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Christian Heimes <christian@cheimes.de>
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diff changeset
527 b[0] = 256
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diff changeset
528 self.fail("Didn't raise ValueError")
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diff changeset
529 except ValueError:
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parents:
diff changeset
530 pass
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diff changeset
531 try:
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diff changeset
532 b[0] = C(-1)
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diff changeset
533 self.fail("Didn't raise ValueError")
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diff changeset
534 except ValueError:
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parents:
diff changeset
535 pass
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diff changeset
536 try:
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diff changeset
537 b[0] = None
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diff changeset
538 self.fail("Didn't raise TypeError")
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diff changeset
539 except TypeError:
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parents:
diff changeset
540 pass
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diff changeset
541
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diff changeset
542 def test_delitem(self):
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diff changeset
543 b = bytearray(range(10))
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diff changeset
544 del b[0]
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diff changeset
545 self.assertEqual(b, bytearray(range(1, 10)))
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diff changeset
546 del b[-1]
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diff changeset
547 self.assertEqual(b, bytearray(range(1, 9)))
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diff changeset
548 del b[4]
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diff changeset
549 self.assertEqual(b, bytearray([1, 2, 3, 4, 6, 7, 8]))
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diff changeset
550
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diff changeset
551 def test_setslice(self):
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diff changeset
552 b = bytearray(range(10))
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diff changeset
553 self.assertEqual(list(b), list(range(10)))
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diff changeset
554
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diff changeset
555 b[0:5] = bytearray([1, 1, 1, 1, 1])
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diff changeset
556 self.assertEqual(b, bytearray([1, 1, 1, 1, 1, 5, 6, 7, 8, 9]))
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diff changeset
557
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diff changeset
558 del b[0:-5]
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diff changeset
559 self.assertEqual(b, bytearray([5, 6, 7, 8, 9]))
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diff changeset
560
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diff changeset
561 b[0:0] = bytearray([0, 1, 2, 3, 4])
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diff changeset
562 self.assertEqual(b, bytearray(range(10)))
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diff changeset
563
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diff changeset
564 b[-7:-3] = bytearray([100, 101])
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diff changeset
565 self.assertEqual(b, bytearray([0, 1, 2, 100, 101, 7, 8, 9]))
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diff changeset
566
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diff changeset
567 b[3:5] = [3, 4, 5, 6]
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diff changeset
568 self.assertEqual(b, bytearray(range(10)))
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diff changeset
569
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diff changeset
570 b[3:0] = [42, 42, 42]
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diff changeset
571 self.assertEqual(b, bytearray([0, 1, 2, 42, 42, 42, 3, 4, 5, 6, 7, 8, 9]))
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diff changeset
572
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diff changeset
573 def test_extended_set_del_slice(self):
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diff changeset
574 indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300)
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diff changeset
575 for start in indices:
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diff changeset
576 for stop in indices:
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diff changeset
577 # Skip invalid step 0
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diff changeset
578 for step in indices[1:]:
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diff changeset
579 L = list(range(255))
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diff changeset
580 b = bytearray(L)
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diff changeset
581 # Make sure we have a slice of exactly the right length,
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diff changeset
582 # but with different data.
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diff changeset
583 data = L[start:stop:step]
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diff changeset
584 data.reverse()
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diff changeset
585 L[start:stop:step] = data
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diff changeset
586 b[start:stop:step] = data
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diff changeset
587 self.assertEquals(b, bytearray(L))
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diff changeset
588
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diff changeset
589 del L[start:stop:step]
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diff changeset
590 del b[start:stop:step]
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591 self.assertEquals(b, bytearray(L))
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592
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593 def test_setslice_trap(self):
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594 # This test verifies that we correctly handle assigning self
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595 # to a slice of self (the old Lambert Meertens trap).
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596 b = bytearray(range(256))
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597 b[8:] = b
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598 self.assertEqual(b, bytearray(list(range(8)) + list(range(256))))
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599
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600 def test_iconcat(self):
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601 b = bytearray(b"abc")
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602 b1 = b
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603 b += b"def"
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604 self.assertEqual(b, b"abcdef")
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605 self.assertEqual(b, b1)
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606 self.failUnless(b is b1)
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607 b += b"xyz"
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608 self.assertEqual(b, b"abcdefxyz")
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609 try:
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610 b += u""
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611 except TypeError:
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612 pass
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613 else:
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614 self.fail("bytes += unicode didn't raise TypeError")
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615
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616 def test_irepeat(self):
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617 b = bytearray(b"abc")
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618 b1 = b
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619 b *= 3
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620 self.assertEqual(b, b"abcabcabc")
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621 self.assertEqual(b, b1)
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622 self.failUnless(b is b1)
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623
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624 def test_irepeat_1char(self):
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625 b = bytearray(b"x")
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626 b1 = b
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627 b *= 100
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628 self.assertEqual(b, b"x"*100)
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629 self.assertEqual(b, b1)
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630 self.failUnless(b is b1)
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631
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632 def test_alloc(self):
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633 b = bytearray()
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634 alloc = b.__alloc__()
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635 self.assert_(alloc >= 0)
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636 seq = [alloc]
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637 for i in range(100):
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638 b += b"x"
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639 alloc = b.__alloc__()
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640 self.assert_(alloc >= len(b))
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641 if alloc not in seq:
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642 seq.append(alloc)
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643
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644 def test_extend(self):
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645 orig = b'hello'
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646 a = bytearray(orig)
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647 a.extend(a)
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648 self.assertEqual(a, orig + orig)
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649 self.assertEqual(a[5:], orig)
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650 a = bytearray(b'')
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651 # Test iterators that don't have a __length_hint__
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652 a.extend(map(ord, orig * 25))
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653 a.extend(ord(x) for x in orig * 25)
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654 self.assertEqual(a, orig * 50)
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655 self.assertEqual(a[-5:], orig)
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656 a = bytearray(b'')
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657 a.extend(iter(map(ord, orig * 50)))
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658 self.assertEqual(a, orig * 50)
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659 self.assertEqual(a[-5:], orig)
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660 a = bytearray(b'')
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661 a.extend(list(map(ord, orig * 50)))
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662 self.assertEqual(a, orig * 50)
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663 self.assertEqual(a[-5:], orig)
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664 a = bytearray(b'')
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665 self.assertRaises(ValueError, a.extend, [0, 1, 2, 256])
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666 self.assertRaises(ValueError, a.extend, [0, 1, 2, -1])
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diff changeset
667 self.assertEqual(len(a), 0)
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668
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diff changeset
669 def test_remove(self):
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670 b = bytearray(b'hello')
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diff changeset
671 b.remove(ord('l'))
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672 self.assertEqual(b, b'helo')
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diff changeset
673 b.remove(ord('l'))
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674 self.assertEqual(b, b'heo')
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diff changeset
675 self.assertRaises(ValueError, lambda: b.remove(ord('l')))
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676 self.assertRaises(ValueError, lambda: b.remove(400))
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677 self.assertRaises(TypeError, lambda: b.remove(u'e'))
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diff changeset
678 # remove first and last
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diff changeset
679 b.remove(ord('o'))
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diff changeset
680 b.remove(ord('h'))
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681 self.assertEqual(b, b'e')
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682 self.assertRaises(TypeError, lambda: b.remove(u'e'))
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683
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diff changeset
684 def test_pop(self):
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685 b = bytearray(b'world')
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686 self.assertEqual(b.pop(), ord('d'))
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687 self.assertEqual(b.pop(0), ord('w'))
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688 self.assertEqual(b.pop(-2), ord('r'))
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689 self.assertRaises(IndexError, lambda: b.pop(10))
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690 self.assertRaises(OverflowError, lambda: bytearray().pop())
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691
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692 def test_nosort(self):
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693 self.assertRaises(AttributeError, lambda: bytearray().sort())
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694
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695 def test_append(self):
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696 b = bytearray(b'hell')
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697 b.append(ord('o'))
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698 self.assertEqual(b, b'hello')
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699 self.assertEqual(b.append(100), None)
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700 b = bytearray()
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701 b.append(ord('A'))
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702 self.assertEqual(len(b), 1)
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703 self.assertRaises(TypeError, lambda: b.append(u'o'))
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704
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705 def test_insert(self):
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706 b = bytearray(b'msssspp')
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707 b.insert(1, ord('i'))
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708 b.insert(4, ord('i'))
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709 b.insert(-2, ord('i'))
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710 b.insert(1000, ord('i'))
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711 self.assertEqual(b, b'mississippi')
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712 self.assertRaises(TypeError, lambda: b.insert(0, b'1'))
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713
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714 def test_partition_bytearray_doesnt_share_nullstring(self):
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715 a, b, c = bytearray(b"x").partition(b"y")
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716 self.assertEqual(b, b"")
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717 self.assertEqual(c, b"")
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718 self.assert_(b is not c)
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719 b += b"!"
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720 self.assertEqual(c, b"")
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721 a, b, c = bytearray(b"x").partition(b"y")
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722 self.assertEqual(b, b"")
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723 self.assertEqual(c, b"")
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724 # Same for rpartition
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725 b, c, a = bytearray(b"x").rpartition(b"y")
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726 self.assertEqual(b, b"")
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727 self.assertEqual(c, b"")
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728 self.assert_(b is not c)
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729 b += b"!"
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730 self.assertEqual(c, b"")
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731 c, b, a = bytearray(b"x").rpartition(b"y")
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732 self.assertEqual(b, b"")
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733 self.assertEqual(c, b"")
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734
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735
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736 class AssortedBytesTest(unittest.TestCase):
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737 #
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738 # Test various combinations of bytes and bytearray
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739 #
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740
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741 def setUp(self):
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742 self.warning_filters = warnings.filters[:]
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743
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diff changeset
744 def tearDown(self):
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745 warnings.filters = self.warning_filters
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746
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diff changeset
747 def test_repr_str(self):
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diff changeset
748 warnings.simplefilter('ignore', BytesWarning)
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diff changeset
749 for f in str, repr:
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750 self.assertEqual(f(bytearray()), "bytearray(b'')")
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diff changeset
751 self.assertEqual(f(bytearray([0])), "bytearray(b'\\x00')")
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diff changeset
752 self.assertEqual(f(bytearray([0, 1, 254, 255])),
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diff changeset
753 "bytearray(b'\\x00\\x01\\xfe\\xff')")
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754 self.assertEqual(f(b"abc"), "b'abc'")
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755 self.assertEqual(f(b"'"), '''b"'"''') # '''
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756 self.assertEqual(f(b"'\""), r"""b'\'"'""") # '
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757
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758 def test_compare_bytes_to_bytearray(self):
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759 self.assertEqual(b"abc" == bytes(b"abc"), True)
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760 self.assertEqual(b"ab" != bytes(b"abc"), True)
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761 self.assertEqual(b"ab" <= bytes(b"abc"), True)
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762 self.assertEqual(b"ab" < bytes(b"abc"), True)
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763 self.assertEqual(b"abc" >= bytes(b"ab"), True)
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764 self.assertEqual(b"abc" > bytes(b"ab"), True)
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765
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766 self.assertEqual(b"abc" != bytes(b"abc"), False)
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767 self.assertEqual(b"ab" == bytes(b"abc"), False)
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768 self.assertEqual(b"ab" > bytes(b"abc"), False)
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769 self.assertEqual(b"ab" >= bytes(b"abc"), False)
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770 self.assertEqual(b"abc" < bytes(b"ab"), False)
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771 self.assertEqual(b"abc" <= bytes(b"ab"), False)
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772
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773 self.assertEqual(bytes(b"abc") == b"abc", True)
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774 self.assertEqual(bytes(b"ab") != b"abc", True)
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775 self.assertEqual(bytes(b"ab") <= b"abc", True)
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776 self.assertEqual(bytes(b"ab") < b"abc", True)
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777 self.assertEqual(bytes(b"abc") >= b"ab", True)
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778 self.assertEqual(bytes(b"abc") > b"ab", True)
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779
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780 self.assertEqual(bytes(b"abc") != b"abc", False)
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781 self.assertEqual(bytes(b"ab") == b"abc", False)
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782 self.assertEqual(bytes(b"ab") > b"abc", False)
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783 self.assertEqual(bytes(b"ab") >= b"abc", False)
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diff changeset
784 self.assertEqual(bytes(b"abc") < b"ab", False)
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785 self.assertEqual(bytes(b"abc") <= b"ab", False)
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786
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diff changeset
787 def test_doc(self):
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diff changeset
788 self.failUnless(bytearray.__doc__ != None)
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789 self.failUnless(bytearray.__doc__.startswith("bytearray("), bytearray.__doc__)
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790 self.failUnless(bytes.__doc__ != None)
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791 self.failUnless(bytes.__doc__.startswith("bytes("), bytes.__doc__)
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792
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diff changeset
793 def test_from_bytearray(self):
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794 sample = bytes(b"Hello world\n\x80\x81\xfe\xff")
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diff changeset
795 buf = memoryview(sample)
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796 b = bytearray(buf)
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797 self.assertEqual(b, bytearray(sample))
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798
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diff changeset
799 def test_to_str(self):
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diff changeset
800 warnings.simplefilter('ignore', BytesWarning)
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diff changeset
801 self.assertEqual(str(b''), "b''")
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diff changeset
802 self.assertEqual(str(b'x'), "b'x'")
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803 self.assertEqual(str(b'\x80'), "b'\\x80'")
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804 self.assertEqual(str(bytearray(b'')), "bytearray(b'')")
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805 self.assertEqual(str(bytearray(b'x')), "bytearray(b'x')")
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806 self.assertEqual(str(bytearray(b'\x80')), "bytearray(b'\\x80')")
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807
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diff changeset
808 def test_literal(self):
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diff changeset
809 tests = [
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810 (b"Wonderful spam", "Wonderful spam"),
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811 (br"Wonderful spam too", "Wonderful spam too"),
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812 (b"\xaa\x00\000\200", "\xaa\x00\000\200"),
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813 (br"\xaa\x00\000\200", r"\xaa\x00\000\200"),
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814 ]
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diff changeset
815 for b, s in tests:
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816 self.assertEqual(b, bytearray(s, 'latin-1'))
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diff changeset
817 for c in range(128, 256):
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818 self.assertRaises(SyntaxError, eval,
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819 'b"%s"' % chr(c))
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820
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diff changeset
821 def test_translate(self):
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diff changeset
822 b = b'hello'
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diff changeset
823 rosetta = bytearray(range(0, 256))
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824 rosetta[ord('o')] = ord('e')
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diff changeset
825 c = b.translate(rosetta, b'l')
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diff changeset
826 self.assertEqual(b, b'hello')
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diff changeset
827 self.assertEqual(c, b'hee')
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828
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829 def test_split_bytearray(self):
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830 self.assertEqual(b'a b'.split(memoryview(b' ')), [b'a', b'b'])
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831
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832 def test_rsplit_bytearray(self):
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833 self.assertEqual(b'a b'.rsplit(memoryview(b' ')), [b'a', b'b'])
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834
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diff changeset
835 # Optimizations:
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836 # __iter__? (optimization)
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837 # __reversed__? (optimization)
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838
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839 # XXX More string methods? (Those that don't use character properties)
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840
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841 # There are tests in string_tests.py that are more
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842 # comprehensive for things like split, partition, etc.
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843 # Unfortunately they are all bundled with tests that
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844 # are not appropriate for bytes
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845
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846 # I've started porting some of those into bytearray_tests.py, we should port
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847 # the rest that make sense (the code can be cleaned up to use modern
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848 # unittest methods at the same time).
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849
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850 class BytearrayPEP3137Test(unittest.TestCase,
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851 test.buffer_tests.MixinBytesBufferCommonTests):
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852 def marshal(self, x):
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853 return bytearray(x)
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854
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diff changeset
855 def test_returns_new_copy(self):
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856 val = self.marshal(b'1234')
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857 # On immutable types these MAY return a reference to themselves
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858 # but on mutable types like bytearray they MUST return a new copy.
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859 for methname in ('zfill', 'rjust', 'ljust', 'center'):
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diff changeset
860 method = getattr(val, methname)
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861 newval = method(3)
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862 self.assertEqual(val, newval)
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863 self.assertTrue(val is not newval,
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864 methname+' returned self on a mutable object')
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865
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866
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867 class FixedStringTest(test.string_tests.BaseTest):
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868
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869 def fixtype(self, obj):
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870 if isinstance(obj, str):
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871 return obj.encode("utf-8")
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872 return super(FixedStringTest, self).fixtype(obj)
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873
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874 # Currently the bytes containment testing uses a single integer
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875 # value. This may not be the final design, but until then the
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876 # bytes section with in a bytes containment not valid
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877 def test_contains(self):
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878 pass
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879 def test_expandtabs(self):
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880 pass
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881 def test_upper(self):
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882 pass
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883 def test_lower(self):
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884 pass
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885 def test_hash(self):
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diff changeset
886 # XXX check this out
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diff changeset
887 pass
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888
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889
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890 class ByteArrayAsStringTest(FixedStringTest):
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891 type2test = bytearray
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892
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893
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894 class ByteArraySubclass(bytearray):
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895 pass
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896
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897 class ByteArraySubclassTest(unittest.TestCase):
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898
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899 def test_basic(self):
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900 self.assert_(issubclass(ByteArraySubclass, bytearray))
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901 self.assert_(isinstance(ByteArraySubclass(), bytearray))
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902
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903 a, b = b"abcd", b"efgh"
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904 _a, _b = ByteArraySubclass(a), ByteArraySubclass(b)
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905
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906 # test comparison operators with subclass instances
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907 self.assert_(_a == _a)
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908 self.assert_(_a != _b)
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909 self.assert_(_a < _b)
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910 self.assert_(_a <= _b)
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911 self.assert_(_b >= _a)
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912 self.assert_(_b > _a)
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913 self.assert_(_a is not a)
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914
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915 # test concat of subclass instances
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916 self.assertEqual(a + b, _a + _b)
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917 self.assertEqual(a + b, a + _b)
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918 self.assertEqual(a + b, _a + b)
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919
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920 # test repeat
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921 self.assert_(a*5 == _a*5)
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922
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923 def test_join(self):
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924 # Make sure join returns a NEW object for single item sequences
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925 # involving a subclass.
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926 # Make sure that it is of the appropriate type.
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927 s1 = ByteArraySubclass(b"abcd")
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928 s2 = bytearray().join([s1])
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929 self.assert_(s1 is not s2)
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930 self.assert_(type(s2) is bytearray, type(s2))
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931
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932 # Test reverse, calling join on subclass
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933 s3 = s1.join([b"abcd"])
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934 self.assert_(type(s3) is bytearray)
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935
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936 def test_pickle(self):
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937 a = ByteArraySubclass(b"abcd")
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938 a.x = 10
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939 a.y = ByteArraySubclass(b"efgh")
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940 for proto in range(pickle.HIGHEST_PROTOCOL):
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941 b = pickle.loads(pickle.dumps(a, proto))
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942 self.assertNotEqual(id(a), id(b))
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943 self.assertEqual(a, b)
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944 self.assertEqual(a.x, b.x)
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945 self.assertEqual(a.y, b.y)
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946 self.assertEqual(type(a), type(b))
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947 self.assertEqual(type(a.y), type(b.y))
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948
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949 def test_copy(self):
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950 a = ByteArraySubclass(b"abcd")
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951 a.x = 10
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952 a.y = ByteArraySubclass(b"efgh")
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953 for copy_method in (copy.copy, copy.deepcopy):
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954 b = copy_method(a)
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955 self.assertNotEqual(id(a), id(b))
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956 self.assertEqual(a, b)
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957 self.assertEqual(a.x, b.x)
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958 self.assertEqual(a.y, b.y)
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959 self.assertEqual(type(a), type(b))
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960 self.assertEqual(type(a.y), type(b.y))
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961
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962 def test_init_override(self):
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963 class subclass(bytearray):
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964 def __init__(self, newarg=1, *args, **kwargs):
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965 bytearray.__init__(self, *args, **kwargs)
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966 x = subclass(4, source=b"abcd")
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967 self.assertEqual(x, b"abcd")
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968 x = subclass(newarg=4, source=b"abcd")
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969 self.assertEqual(x, b"abcd")
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970
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971 def test_main():
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972 #test.test_support.run_unittest(BytesTest)
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973 #test.test_support.run_unittest(AssortedBytesTest)
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974 #test.test_support.run_unittest(BytesAsStringTest)
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975 test.test_support.run_unittest(
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976 ByteArrayTest,
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977 ByteArrayAsStringTest,
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978 ByteArraySubclassTest,
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979 BytearrayPEP3137Test)
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980
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981 if __name__ == "__main__":
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982 test_main()