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annotate Lib/test/test_memoryio.py @ 58925:eecf1bef052d 2.6

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Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........
author Ezio Melotti <ezio.melotti@gmail.com>
date Tue, 16 Feb 2010 23:29:44 +0000
parents 0bd616dfc977
children b36cb4602e21
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1 """Unit tests for memory-based file-like objects.
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2 StringIO -- for unicode strings
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3 BytesIO -- for bytes
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4 """
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5
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6 from __future__ import unicode_literals
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7
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8 import unittest
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9 from test import test_support
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10
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11 import io
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12 import sys
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13 import array
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14
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15 try:
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16 import _bytesio
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17 has_c_implementation = True
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18 except ImportError:
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19 has_c_implementation = False
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20
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21
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22 class MemoryTestMixin:
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23
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24 def write_ops(self, f, t):
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25 self.assertEqual(f.write(t("blah.")), 5)
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26 self.assertEqual(f.seek(0), 0)
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27 self.assertEqual(f.write(t("Hello.")), 6)
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28 self.assertEqual(f.tell(), 6)
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29 self.assertEqual(f.seek(5), 5)
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30 self.assertEqual(f.tell(), 5)
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31 self.assertEqual(f.write(t(" world\n\n\n")), 9)
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32 self.assertEqual(f.seek(0), 0)
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33 self.assertEqual(f.write(t("h")), 1)
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34 self.assertEqual(f.truncate(12), 12)
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35 self.assertEqual(f.tell(), 1)
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36
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37 def test_write(self):
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38 buf = self.buftype("hello world\n")
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39 memio = self.ioclass(buf)
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40
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41 self.write_ops(memio, self.buftype)
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42 self.assertEqual(memio.getvalue(), buf)
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43 memio = self.ioclass()
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44 self.write_ops(memio, self.buftype)
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45 self.assertEqual(memio.getvalue(), buf)
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46 self.assertRaises(TypeError, memio.write, None)
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47 memio.close()
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48 self.assertRaises(ValueError, memio.write, self.buftype(""))
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49
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50 def test_writelines(self):
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51 buf = self.buftype("1234567890")
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52 memio = self.ioclass()
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53
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54 self.assertEqual(memio.writelines([buf] * 100), None)
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55 self.assertEqual(memio.getvalue(), buf * 100)
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56 memio.writelines([])
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57 self.assertEqual(memio.getvalue(), buf * 100)
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58 memio = self.ioclass()
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59 self.assertRaises(TypeError, memio.writelines, [buf] + [1])
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60 self.assertEqual(memio.getvalue(), buf)
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61 self.assertRaises(TypeError, memio.writelines, None)
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62 memio.close()
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63 self.assertRaises(ValueError, memio.writelines, [])
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64
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65 def test_writelines_error(self):
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66 memio = self.ioclass()
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67 def error_gen():
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68 yield self.buftype('spam')
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69 raise KeyboardInterrupt
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70
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71 self.assertRaises(KeyboardInterrupt, memio.writelines, error_gen())
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72
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73 def test_truncate(self):
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74 buf = self.buftype("1234567890")
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75 memio = self.ioclass(buf)
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76
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77 self.assertRaises(ValueError, memio.truncate, -1)
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78 memio.seek(6)
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79 self.assertEqual(memio.truncate(), 6)
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80 self.assertEqual(memio.getvalue(), buf[:6])
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81 self.assertEqual(memio.truncate(4), 4)
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82 self.assertEqual(memio.getvalue(), buf[:4])
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83 # truncate() accepts long objects
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84 self.assertEqual(memio.truncate(4L), 4)
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85 self.assertEqual(memio.getvalue(), buf[:4])
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86 self.assertEqual(memio.tell(), 6)
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87 memio.seek(0, 2)
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88 memio.write(buf)
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89 self.assertEqual(memio.getvalue(), buf[:4] + buf)
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90 pos = memio.tell()
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91 self.assertEqual(memio.truncate(None), pos)
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92 self.assertEqual(memio.tell(), pos)
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93 self.assertRaises(TypeError, memio.truncate, '0')
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94 memio.close()
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95 self.assertRaises(ValueError, memio.truncate, 0)
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96
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97 def test_init(self):
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98 buf = self.buftype("1234567890")
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99 memio = self.ioclass(buf)
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100 self.assertEqual(memio.getvalue(), buf)
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101 memio = self.ioclass(None)
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102 self.assertEqual(memio.getvalue(), self.EOF)
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103 memio.__init__(buf * 2)
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104 self.assertEqual(memio.getvalue(), buf * 2)
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105 memio.__init__(buf)
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106 self.assertEqual(memio.getvalue(), buf)
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107
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108 def test_read(self):
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109 buf = self.buftype("1234567890")
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110 memio = self.ioclass(buf)
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111
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112 self.assertEqual(memio.read(0), self.EOF)
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113 self.assertEqual(memio.read(1), buf[:1])
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114 # read() accepts long objects
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115 self.assertEqual(memio.read(4L), buf[1:5])
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116 self.assertEqual(memio.read(900), buf[5:])
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117 self.assertEqual(memio.read(), self.EOF)
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118 memio.seek(0)
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119 self.assertEqual(memio.read(), buf)
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120 self.assertEqual(memio.read(), self.EOF)
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121 self.assertEqual(memio.tell(), 10)
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122 memio.seek(0)
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123 self.assertEqual(memio.read(-1), buf)
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124 memio.seek(0)
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125 self.assertEqual(type(memio.read()), type(buf))
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126 memio.seek(100)
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127 self.assertEqual(type(memio.read()), type(buf))
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128 memio.seek(0)
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129 self.assertEqual(memio.read(None), buf)
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130 self.assertRaises(TypeError, memio.read, '')
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131 memio.close()
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132 self.assertRaises(ValueError, memio.read)
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133
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134 def test_readline(self):
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135 buf = self.buftype("1234567890\n")
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136 memio = self.ioclass(buf * 2)
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137
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138 self.assertEqual(memio.readline(0), self.EOF)
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139 self.assertEqual(memio.readline(), buf)
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140 self.assertEqual(memio.readline(), buf)
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141 self.assertEqual(memio.readline(), self.EOF)
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142 memio.seek(0)
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143 self.assertEqual(memio.readline(5), buf[:5])
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144 # readline() accepts long objects
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145 self.assertEqual(memio.readline(5L), buf[5:10])
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146 self.assertEqual(memio.readline(5), buf[10:15])
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147 memio.seek(0)
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148 self.assertEqual(memio.readline(-1), buf)
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149 memio.seek(0)
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150 self.assertEqual(memio.readline(0), self.EOF)
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151
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152 buf = self.buftype("1234567890\n")
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153 memio = self.ioclass((buf * 3)[:-1])
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154 self.assertEqual(memio.readline(), buf)
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155 self.assertEqual(memio.readline(), buf)
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156 self.assertEqual(memio.readline(), buf[:-1])
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157 self.assertEqual(memio.readline(), self.EOF)
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158 memio.seek(0)
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159 self.assertEqual(type(memio.readline()), type(buf))
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160 self.assertEqual(memio.readline(None), buf)
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161 self.assertRaises(TypeError, memio.readline, '')
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162 memio.close()
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163 self.assertRaises(ValueError, memio.readline)
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164
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165 def test_readlines(self):
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166 buf = self.buftype("1234567890\n")
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167 memio = self.ioclass(buf * 10)
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168
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169 self.assertEqual(memio.readlines(), [buf] * 10)
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170 memio.seek(5)
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171 self.assertEqual(memio.readlines(), [buf[5:]] + [buf] * 9)
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172 memio.seek(0)
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173 # readlines() accepts long objects
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174 self.assertEqual(memio.readlines(15L), [buf] * 2)
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175 memio.seek(0)
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176 self.assertEqual(memio.readlines(-1), [buf] * 10)
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177 memio.seek(0)
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178 self.assertEqual(memio.readlines(0), [buf] * 10)
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179 memio.seek(0)
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180 self.assertEqual(type(memio.readlines()[0]), type(buf))
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181 memio.seek(0)
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182 self.assertEqual(memio.readlines(None), [buf] * 10)
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183 self.assertRaises(TypeError, memio.readlines, '')
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184 memio.close()
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185 self.assertRaises(ValueError, memio.readlines)
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186
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187 def test_iterator(self):
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188 buf = self.buftype("1234567890\n")
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189 memio = self.ioclass(buf * 10)
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190
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191 self.assertEqual(iter(memio), memio)
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192 self.failUnless(hasattr(memio, '__iter__'))
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193 self.failUnless(hasattr(memio, 'next'))
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194 i = 0
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195 for line in memio:
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196 self.assertEqual(line, buf)
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197 i += 1
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198 self.assertEqual(i, 10)
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199 memio.seek(0)
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200 i = 0
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201 for line in memio:
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202 self.assertEqual(line, buf)
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203 i += 1
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204 self.assertEqual(i, 10)
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205 memio = self.ioclass(buf * 2)
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206 memio.close()
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207 self.assertRaises(ValueError, memio.next)
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208
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209 def test_getvalue(self):
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210 buf = self.buftype("1234567890")
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211 memio = self.ioclass(buf)
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212
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213 self.assertEqual(memio.getvalue(), buf)
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214 memio.read()
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215 self.assertEqual(memio.getvalue(), buf)
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diff changeset
216 self.assertEqual(type(memio.getvalue()), type(buf))
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217 memio = self.ioclass(buf * 1000)
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218 self.assertEqual(memio.getvalue()[-3:], self.buftype("890"))
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219 memio = self.ioclass(buf)
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220 memio.close()
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diff changeset
221 self.assertRaises(ValueError, memio.getvalue)
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222
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
223 def test_seek(self):
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224 buf = self.buftype("1234567890")
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diff changeset
225 memio = self.ioclass(buf)
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diff changeset
226
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diff changeset
227 memio.read(5)
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diff changeset
228 self.assertRaises(ValueError, memio.seek, -1)
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diff changeset
229 self.assertRaises(ValueError, memio.seek, 1, -1)
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diff changeset
230 self.assertRaises(ValueError, memio.seek, 1, 3)
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diff changeset
231 self.assertEqual(memio.seek(0), 0)
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diff changeset
232 self.assertEqual(memio.seek(0, 0), 0)
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233 self.assertEqual(memio.read(), buf)
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diff changeset
234 self.assertEqual(memio.seek(3), 3)
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235 # seek() accepts long objects
6c13bf35d166 Issue #7249: Methods of io.BytesIO now allow `long` as well as `int` arguments.
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diff changeset
236 self.assertEqual(memio.seek(3L), 3)
46805
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diff changeset
237 self.assertEqual(memio.seek(0, 1), 3)
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diff changeset
238 self.assertEqual(memio.read(), buf[3:])
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diff changeset
239 self.assertEqual(memio.seek(len(buf)), len(buf))
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diff changeset
240 self.assertEqual(memio.read(), self.EOF)
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diff changeset
241 memio.seek(len(buf) + 1)
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diff changeset
242 self.assertEqual(memio.read(), self.EOF)
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diff changeset
243 self.assertEqual(memio.seek(0, 2), len(buf))
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diff changeset
244 self.assertEqual(memio.read(), self.EOF)
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diff changeset
245 memio.close()
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diff changeset
246 self.assertRaises(ValueError, memio.seek, 0)
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diff changeset
247
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diff changeset
248 def test_overseek(self):
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249 buf = self.buftype("1234567890")
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diff changeset
250 memio = self.ioclass(buf)
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diff changeset
251
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diff changeset
252 self.assertEqual(memio.seek(len(buf) + 1), 11)
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diff changeset
253 self.assertEqual(memio.read(), self.EOF)
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diff changeset
254 self.assertEqual(memio.tell(), 11)
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diff changeset
255 self.assertEqual(memio.getvalue(), buf)
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diff changeset
256 memio.write(self.EOF)
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diff changeset
257 self.assertEqual(memio.getvalue(), buf)
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258 memio.write(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
259 self.assertEqual(memio.getvalue(), buf + self.buftype('\0') + buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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parents:
diff changeset
260
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
261 def test_tell(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
262 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
263 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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parents:
diff changeset
264
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
265 self.assertEqual(memio.tell(), 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
266 memio.seek(5)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
267 self.assertEqual(memio.tell(), 5)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
268 memio.seek(10000)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
269 self.assertEqual(memio.tell(), 10000)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
270 memio.close()
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diff changeset
271 self.assertRaises(ValueError, memio.tell)
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parents:
diff changeset
272
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
273 def test_flush(self):
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diff changeset
274 buf = self.buftype("1234567890")
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diff changeset
275 memio = self.ioclass(buf)
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diff changeset
276
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diff changeset
277 self.assertEqual(memio.flush(), None)
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diff changeset
278
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
279 def test_flags(self):
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diff changeset
280 memio = self.ioclass()
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diff changeset
281
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
282 self.assertEqual(memio.writable(), True)
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diff changeset
283 self.assertEqual(memio.readable(), True)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
284 self.assertEqual(memio.seekable(), True)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
285 self.assertEqual(memio.isatty(), False)
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diff changeset
286 self.assertEqual(memio.closed, False)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
287 memio.close()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
288 self.assertEqual(memio.writable(), True)
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diff changeset
289 self.assertEqual(memio.readable(), True)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
290 self.assertEqual(memio.seekable(), True)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
291 self.assertRaises(ValueError, memio.isatty)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
292 self.assertEqual(memio.closed, True)
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diff changeset
293
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
294 def test_subclassing(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
295 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
296 def test1():
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
297 class MemIO(self.ioclass):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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298 pass
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
299 m = MemIO(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
300 return m.getvalue()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
301 def test2():
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
302 class MemIO(self.ioclass):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
303 def __init__(me, a, b):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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304 self.ioclass.__init__(me, a)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
305 m = MemIO(buf, None)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
306 return m.getvalue()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
307 self.assertEqual(test1(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
308 self.assertEqual(test2(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
309
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diff changeset
310
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
311 class PyBytesIOTest(MemoryTestMixin, unittest.TestCase):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
312 @staticmethod
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diff changeset
313 def buftype(s):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
314 return s.encode("ascii")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
315 ioclass = io._BytesIO
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
316 EOF = b""
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
317
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
318 def test_read1(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
319 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
320 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
321
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
322 self.assertRaises(TypeError, memio.read1)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
323 self.assertEqual(memio.read(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
324
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
325 def test_readinto(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
326 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
327 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
328
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
329 b = bytearray(b"hello")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
330 self.assertEqual(memio.readinto(b), 5)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
331 self.assertEqual(b, b"12345")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
332 self.assertEqual(memio.readinto(b), 5)
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diff changeset
333 self.assertEqual(b, b"67890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
334 self.assertEqual(memio.readinto(b), 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
335 self.assertEqual(b, b"67890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
336 b = bytearray(b"hello world")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
337 memio.seek(0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
338 self.assertEqual(memio.readinto(b), 10)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
339 self.assertEqual(b, b"1234567890d")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
340 b = bytearray(b"")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
341 memio.seek(0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
342 self.assertEqual(memio.readinto(b), 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
343 self.assertEqual(b, b"")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
344 self.assertRaises(TypeError, memio.readinto, '')
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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parents:
diff changeset
345 a = array.array(b'b', map(ord, b"hello world"))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
346 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
347 memio.readinto(a)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
348 self.assertEqual(a.tostring(), b"1234567890d")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
349 memio.close()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
350 self.assertRaises(ValueError, memio.readinto, b)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
351
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
352 def test_relative_seek(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
353 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
354 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
355
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
356 self.assertEqual(memio.seek(-1, 1), 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
357 self.assertEqual(memio.seek(3, 1), 3)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
358 self.assertEqual(memio.seek(-4, 1), 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
359 self.assertEqual(memio.seek(-1, 2), 9)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
360 self.assertEqual(memio.seek(1, 1), 10)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
361 self.assertEqual(memio.seek(1, 2), 11)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
362 memio.seek(-3, 2)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
363 self.assertEqual(memio.read(), buf[-3:])
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
364 memio.seek(0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
365 memio.seek(1, 1)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
366 self.assertEqual(memio.read(), buf[1:])
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
367
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
368 def test_unicode(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
369 memio = self.ioclass()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
370
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
371 self.assertRaises(TypeError, self.ioclass, "1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
372 self.assertRaises(TypeError, memio.write, "1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
373 self.assertRaises(TypeError, memio.writelines, ["1234567890"])
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
374
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
375 def test_bytes_array(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
376 buf = b"1234567890"
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
377
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
378 a = array.array(b'b', map(ord, buf))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
379 memio = self.ioclass(a)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
380 self.assertEqual(memio.getvalue(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
381 self.assertEqual(memio.write(a), 10)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
382 self.assertEqual(memio.getvalue(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
383
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
384
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
385 class PyStringIOTest(MemoryTestMixin, unittest.TestCase):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
386 buftype = unicode
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
387 ioclass = io.StringIO
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
388 EOF = ""
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
389
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
390 def test_relative_seek(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
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391 memio = self.ioclass()
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392
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393 self.assertRaises(IOError, memio.seek, -1, 1)
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394 self.assertRaises(IOError, memio.seek, 3, 1)
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395 self.assertRaises(IOError, memio.seek, -3, 1)
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396 self.assertRaises(IOError, memio.seek, -1, 2)
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397 self.assertRaises(IOError, memio.seek, 1, 1)
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398 self.assertRaises(IOError, memio.seek, 1, 2)
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399
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400 # XXX: For the Python version of io.StringIO, this is highly
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401 # dependent on the encoding used for the underlying buffer.
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402 # def test_widechar(self):
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403 # buf = self.buftype("\U0002030a\U00020347")
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404 # memio = self.ioclass(buf)
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405 #
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406 # self.assertEqual(memio.getvalue(), buf)
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407 # self.assertEqual(memio.write(buf), len(buf))
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408 # self.assertEqual(memio.tell(), len(buf))
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409 # self.assertEqual(memio.getvalue(), buf)
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410 # self.assertEqual(memio.write(buf), len(buf))
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411 # self.assertEqual(memio.tell(), len(buf) * 2)
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412 # self.assertEqual(memio.getvalue(), buf + buf)
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413
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414 if has_c_implementation:
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415 class CBytesIOTest(PyBytesIOTest):
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416 ioclass = io.BytesIO
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417
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418 def test_main():
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419 tests = [PyBytesIOTest, PyStringIOTest]
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420 if has_c_implementation:
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421 tests.extend([CBytesIOTest])
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422 test_support.run_unittest(*tests)
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423
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424 if __name__ == '__main__':
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425 test_main()