Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_memoryio.py @ 54294:dba767bc3155 legacy-trunk

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remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents 4c5ee1b38045
children 6c13bf35d166 760a710eb6c1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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(), 12)
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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 self.assertEqual(memio.tell(), 4)
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84 memio.write(buf)
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85 self.assertEqual(memio.getvalue(), buf[:4] + buf)
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86 pos = memio.tell()
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87 self.assertEqual(memio.truncate(None), pos)
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88 self.assertEqual(memio.tell(), pos)
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89 self.assertRaises(TypeError, memio.truncate, '0')
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90 memio.close()
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91 self.assertRaises(ValueError, memio.truncate, 0)
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92
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93 def test_init(self):
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94 buf = self.buftype("1234567890")
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95 memio = self.ioclass(buf)
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96 self.assertEqual(memio.getvalue(), buf)
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97 memio = self.ioclass(None)
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98 self.assertEqual(memio.getvalue(), self.EOF)
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99 memio.__init__(buf * 2)
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100 self.assertEqual(memio.getvalue(), buf * 2)
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101 memio.__init__(buf)
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102 self.assertEqual(memio.getvalue(), buf)
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103
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104 def test_read(self):
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105 buf = self.buftype("1234567890")
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106 memio = self.ioclass(buf)
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107
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108 self.assertEqual(memio.read(0), self.EOF)
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109 self.assertEqual(memio.read(1), buf[:1])
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110 self.assertEqual(memio.read(4), buf[1:5])
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111 self.assertEqual(memio.read(900), buf[5:])
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112 self.assertEqual(memio.read(), self.EOF)
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113 memio.seek(0)
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114 self.assertEqual(memio.read(), buf)
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115 self.assertEqual(memio.read(), self.EOF)
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116 self.assertEqual(memio.tell(), 10)
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117 memio.seek(0)
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118 self.assertEqual(memio.read(-1), buf)
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119 memio.seek(0)
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120 self.assertEqual(type(memio.read()), type(buf))
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121 memio.seek(100)
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122 self.assertEqual(type(memio.read()), type(buf))
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123 memio.seek(0)
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124 self.assertEqual(memio.read(None), buf)
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125 self.assertRaises(TypeError, memio.read, '')
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126 memio.close()
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127 self.assertRaises(ValueError, memio.read)
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128
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129 def test_readline(self):
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130 buf = self.buftype("1234567890\n")
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131 memio = self.ioclass(buf * 2)
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132
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diff changeset
133 self.assertEqual(memio.readline(0), self.EOF)
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parents:
diff changeset
134 self.assertEqual(memio.readline(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
135 self.assertEqual(memio.readline(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
136 self.assertEqual(memio.readline(), self.EOF)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
137 memio.seek(0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
138 self.assertEqual(memio.readline(5), buf[:5])
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
139 self.assertEqual(memio.readline(5), buf[5:10])
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
140 self.assertEqual(memio.readline(5), buf[10:15])
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
141 memio.seek(0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
142 self.assertEqual(memio.readline(-1), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
143 memio.seek(0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
144 self.assertEqual(memio.readline(0), self.EOF)
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diff changeset
145
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
146 buf = self.buftype("1234567890\n")
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Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
147 memio = self.ioclass((buf * 3)[:-1])
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diff changeset
148 self.assertEqual(memio.readline(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
149 self.assertEqual(memio.readline(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
150 self.assertEqual(memio.readline(), buf[:-1])
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
151 self.assertEqual(memio.readline(), self.EOF)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
152 memio.seek(0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
153 self.assertEqual(type(memio.readline()), type(buf))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
154 self.assertEqual(memio.readline(None), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
155 self.assertRaises(TypeError, memio.readline, '')
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
156 memio.close()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
157 self.assertRaises(ValueError, memio.readline)
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Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
158
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
159 def test_readlines(self):
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
160 buf = self.buftype("1234567890\n")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
161 memio = self.ioclass(buf * 10)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
162
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
163 self.assertEqual(memio.readlines(), [buf] * 10)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
164 memio.seek(5)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
165 self.assertEqual(memio.readlines(), [buf[5:]] + [buf] * 9)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
166 memio.seek(0)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
167 self.assertEqual(memio.readlines(15), [buf] * 2)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
168 memio.seek(0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
169 self.assertEqual(memio.readlines(-1), [buf] * 10)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
170 memio.seek(0)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
171 self.assertEqual(memio.readlines(0), [buf] * 10)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
172 memio.seek(0)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
173 self.assertEqual(type(memio.readlines()[0]), type(buf))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
174 memio.seek(0)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
175 self.assertEqual(memio.readlines(None), [buf] * 10)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
176 self.assertRaises(TypeError, memio.readlines, '')
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
177 memio.close()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
178 self.assertRaises(ValueError, memio.readlines)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
179
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
180 def test_iterator(self):
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diff changeset
181 buf = self.buftype("1234567890\n")
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Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
182 memio = self.ioclass(buf * 10)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
183
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
184 self.assertEqual(iter(memio), memio)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
185 self.failUnless(hasattr(memio, '__iter__'))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
186 self.failUnless(hasattr(memio, 'next'))
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
187 i = 0
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
188 for line in memio:
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
189 self.assertEqual(line, buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
190 i += 1
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
191 self.assertEqual(i, 10)
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Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
192 memio.seek(0)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
193 i = 0
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
194 for line in memio:
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
195 self.assertEqual(line, buf)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
196 i += 1
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
197 self.assertEqual(i, 10)
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diff changeset
198 memio = self.ioclass(buf * 2)
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
199 memio.close()
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Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
200 self.assertRaises(ValueError, memio.next)
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diff changeset
201
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
202 def test_getvalue(self):
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diff changeset
203 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
204 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
205
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diff changeset
206 self.assertEqual(memio.getvalue(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
207 memio.read()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
208 self.assertEqual(memio.getvalue(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
209 self.assertEqual(type(memio.getvalue()), type(buf))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
210 memio = self.ioclass(buf * 1000)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
211 self.assertEqual(memio.getvalue()[-3:], self.buftype("890"))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
212 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
213 memio.close()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
214 self.assertRaises(ValueError, memio.getvalue)
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Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
215
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
216 def test_seek(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
217 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
218 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
219
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
220 memio.read(5)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
221 self.assertRaises(ValueError, memio.seek, -1)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
222 self.assertRaises(ValueError, memio.seek, 1, -1)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
223 self.assertRaises(ValueError, memio.seek, 1, 3)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
224 self.assertEqual(memio.seek(0), 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
225 self.assertEqual(memio.seek(0, 0), 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
226 self.assertEqual(memio.read(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
227 self.assertEqual(memio.seek(3), 3)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
228 self.assertEqual(memio.seek(0, 1), 3)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
229 self.assertEqual(memio.read(), buf[3:])
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
230 self.assertEqual(memio.seek(len(buf)), len(buf))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
231 self.assertEqual(memio.read(), self.EOF)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
232 memio.seek(len(buf) + 1)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
233 self.assertEqual(memio.read(), self.EOF)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
234 self.assertEqual(memio.seek(0, 2), len(buf))
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
235 self.assertEqual(memio.read(), self.EOF)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
236 memio.close()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
237 self.assertRaises(ValueError, memio.seek, 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
238
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
239 def test_overseek(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
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diff changeset
240 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
241 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
242
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
243 self.assertEqual(memio.seek(len(buf) + 1), 11)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
244 self.assertEqual(memio.read(), self.EOF)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
245 self.assertEqual(memio.tell(), 11)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
246 self.assertEqual(memio.getvalue(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
247 memio.write(self.EOF)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
248 self.assertEqual(memio.getvalue(), buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
249 memio.write(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
250 self.assertEqual(memio.getvalue(), buf + self.buftype('\0') + buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
251
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
252 def test_tell(self):
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
253 buf = self.buftype("1234567890")
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
254 memio = self.ioclass(buf)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
255
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
256 self.assertEqual(memio.tell(), 0)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
257 memio.seek(5)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
258 self.assertEqual(memio.tell(), 5)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
259 memio.seek(10000)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
260 self.assertEqual(memio.tell(), 10000)
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
261 memio.close()
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
Alexandre Vassalotti <alexandre@peadrop.com>
parents:
diff changeset
262 self.assertRaises(ValueError, memio.tell)
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263
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264 def test_flush(self):
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265 buf = self.buftype("1234567890")
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266 memio = self.ioclass(buf)
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267
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268 self.assertEqual(memio.flush(), None)
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269
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270 def test_flags(self):
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271 memio = self.ioclass()
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272
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273 self.assertEqual(memio.writable(), True)
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274 self.assertEqual(memio.readable(), True)
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275 self.assertEqual(memio.seekable(), True)
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276 self.assertEqual(memio.isatty(), False)
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277 self.assertEqual(memio.closed, False)
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278 memio.close()
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279 self.assertEqual(memio.writable(), True)
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280 self.assertEqual(memio.readable(), True)
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281 self.assertEqual(memio.seekable(), True)
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282 self.assertRaises(ValueError, memio.isatty)
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283 self.assertEqual(memio.closed, True)
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284
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285 def test_subclassing(self):
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286 buf = self.buftype("1234567890")
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287 def test1():
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288 class MemIO(self.ioclass):
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289 pass
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290 m = MemIO(buf)
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291 return m.getvalue()
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292 def test2():
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293 class MemIO(self.ioclass):
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294 def __init__(me, a, b):
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295 self.ioclass.__init__(me, a)
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296 m = MemIO(buf, None)
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297 return m.getvalue()
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298 self.assertEqual(test1(), buf)
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299 self.assertEqual(test2(), buf)
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300
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301
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302 class PyBytesIOTest(MemoryTestMixin, unittest.TestCase):
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303 @staticmethod
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304 def buftype(s):
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305 return s.encode("ascii")
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306 ioclass = io._BytesIO
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307 EOF = b""
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308
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309 def test_read1(self):
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310 buf = self.buftype("1234567890")
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311 memio = self.ioclass(buf)
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312
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313 self.assertRaises(TypeError, memio.read1)
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314 self.assertEqual(memio.read(), buf)
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315
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316 def test_readinto(self):
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317 buf = self.buftype("1234567890")
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318 memio = self.ioclass(buf)
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319
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320 b = bytearray(b"hello")
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321 self.assertEqual(memio.readinto(b), 5)
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322 self.assertEqual(b, b"12345")
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323 self.assertEqual(memio.readinto(b), 5)
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324 self.assertEqual(b, b"67890")
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325 self.assertEqual(memio.readinto(b), 0)
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326 self.assertEqual(b, b"67890")
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327 b = bytearray(b"hello world")
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328 memio.seek(0)
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329 self.assertEqual(memio.readinto(b), 10)
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330 self.assertEqual(b, b"1234567890d")
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331 b = bytearray(b"")
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332 memio.seek(0)
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333 self.assertEqual(memio.readinto(b), 0)
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334 self.assertEqual(b, b"")
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335 self.assertRaises(TypeError, memio.readinto, '')
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336 a = array.array(b'b', map(ord, b"hello world"))
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337 memio = self.ioclass(buf)
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diff changeset
338 memio.readinto(a)
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339 self.assertEqual(a.tostring(), b"1234567890d")
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340 memio.close()
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341 self.assertRaises(ValueError, memio.readinto, b)
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342
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343 def test_relative_seek(self):
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344 buf = self.buftype("1234567890")
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345 memio = self.ioclass(buf)
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diff changeset
346
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347 self.assertEqual(memio.seek(-1, 1), 0)
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diff changeset
348 self.assertEqual(memio.seek(3, 1), 3)
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diff changeset
349 self.assertEqual(memio.seek(-4, 1), 0)
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diff changeset
350 self.assertEqual(memio.seek(-1, 2), 9)
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diff changeset
351 self.assertEqual(memio.seek(1, 1), 10)
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diff changeset
352 self.assertEqual(memio.seek(1, 2), 11)
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diff changeset
353 memio.seek(-3, 2)
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diff changeset
354 self.assertEqual(memio.read(), buf[-3:])
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diff changeset
355 memio.seek(0)
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diff changeset
356 memio.seek(1, 1)
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diff changeset
357 self.assertEqual(memio.read(), buf[1:])
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diff changeset
358
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diff changeset
359 def test_unicode(self):
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diff changeset
360 memio = self.ioclass()
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diff changeset
361
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diff changeset
362 self.assertRaises(TypeError, self.ioclass, "1234567890")
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diff changeset
363 self.assertRaises(TypeError, memio.write, "1234567890")
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diff changeset
364 self.assertRaises(TypeError, memio.writelines, ["1234567890"])
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diff changeset
365
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diff changeset
366 def test_bytes_array(self):
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diff changeset
367 buf = b"1234567890"
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diff changeset
368
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diff changeset
369 a = array.array(b'b', map(ord, buf))
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diff changeset
370 memio = self.ioclass(a)
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diff changeset
371 self.assertEqual(memio.getvalue(), buf)
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diff changeset
372 self.assertEqual(memio.write(a), 10)
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diff changeset
373 self.assertEqual(memio.getvalue(), buf)
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diff changeset
374
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diff changeset
375
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diff changeset
376 class PyStringIOTest(MemoryTestMixin, unittest.TestCase):
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diff changeset
377 buftype = unicode
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diff changeset
378 ioclass = io.StringIO
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
379 EOF = ""
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diff changeset
380
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
381 def test_relative_seek(self):
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diff changeset
382 memio = self.ioclass()
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diff changeset
383
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diff changeset
384 self.assertRaises(IOError, memio.seek, -1, 1)
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diff changeset
385 self.assertRaises(IOError, memio.seek, 3, 1)
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diff changeset
386 self.assertRaises(IOError, memio.seek, -3, 1)
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diff changeset
387 self.assertRaises(IOError, memio.seek, -1, 2)
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diff changeset
388 self.assertRaises(IOError, memio.seek, 1, 1)
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diff changeset
389 self.assertRaises(IOError, memio.seek, 1, 2)
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diff changeset
390
4c5ee1b38045 Backport fast alternate io.BytesIO implementation.
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diff changeset
391 # XXX: For the Python version of io.StringIO, this is highly
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diff changeset
392 # dependent on the encoding used for the underlying buffer.
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diff changeset
393 # def test_widechar(self):
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diff changeset
394 # buf = self.buftype("\U0002030a\U00020347")
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395 # memio = self.ioclass(buf)
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396 #
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397 # self.assertEqual(memio.getvalue(), buf)
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398 # self.assertEqual(memio.write(buf), len(buf))
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399 # self.assertEqual(memio.tell(), len(buf))
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400 # self.assertEqual(memio.getvalue(), buf)
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401 # self.assertEqual(memio.write(buf), len(buf))
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402 # self.assertEqual(memio.tell(), len(buf) * 2)
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403 # self.assertEqual(memio.getvalue(), buf + buf)
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404
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405 if has_c_implementation:
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406 class CBytesIOTest(PyBytesIOTest):
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407 ioclass = io.BytesIO
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408
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409 def test_main():
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410 tests = [PyBytesIOTest, PyStringIOTest]
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411 if has_c_implementation:
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412 tests.extend([CBytesIOTest])
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413 test_support.run_unittest(*tests)
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414
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415 if __name__ == '__main__':
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416 test_main()