Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/psutil/tests/test_unicode.py @ 4:79f47841a781 draft

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"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:47:39 -0400
parents 26e78fe6e8c4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python3
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2 # -*- coding: utf-8 -*-
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3
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4 # Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
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5 # Use of this source code is governed by a BSD-style license that can be
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6 # found in the LICENSE file.
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7
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8 """
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9 Notes about unicode handling in psutil
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10 ======================================
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11
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12 Starting from version 5.3.0 psutil adds unicode support, see:
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13 https://github.com/giampaolo/psutil/issues/1040
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14 The notes below apply to *any* API returning a string such as
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15 process exe(), cwd() or username():
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16
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17 * all strings are encoded by using the OS filesystem encoding
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18 (sys.getfilesystemencoding()) which varies depending on the platform
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19 (e.g. "UTF-8" on macOS, "mbcs" on Win)
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20 * no API call is supposed to crash with UnicodeDecodeError
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21 * instead, in case of badly encoded data returned by the OS, the
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22 following error handlers are used to replace the corrupted characters in
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23 the string:
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24 * Python 3: sys.getfilesystemencodeerrors() (PY 3.6+) or
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25 "surrogatescape" on POSIX and "replace" on Windows
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26 * Python 2: "replace"
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27 * on Python 2 all APIs return bytes (str type), never unicode
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28 * on Python 2, you can go back to unicode by doing:
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29
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30 >>> unicode(p.exe(), sys.getdefaultencoding(), errors="replace")
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31
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32 For a detailed explanation of how psutil handles unicode see #1040.
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33
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34 Tests
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35 =====
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36
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37 List of APIs returning or dealing with a string:
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38 ('not tested' means they are not tested to deal with non-ASCII strings):
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39
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40 * Process.cmdline()
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41 * Process.connections('unix')
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42 * Process.cwd()
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43 * Process.environ()
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44 * Process.exe()
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45 * Process.memory_maps()
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46 * Process.name()
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47 * Process.open_files()
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48 * Process.username() (not tested)
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49
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50 * disk_io_counters() (not tested)
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51 * disk_partitions() (not tested)
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52 * disk_usage(str)
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53 * net_connections('unix')
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54 * net_if_addrs() (not tested)
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55 * net_if_stats() (not tested)
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56 * net_io_counters() (not tested)
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57 * sensors_fans() (not tested)
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58 * sensors_temperatures() (not tested)
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59 * users() (not tested)
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60
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61 * WindowsService.binpath() (not tested)
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62 * WindowsService.description() (not tested)
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63 * WindowsService.display_name() (not tested)
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64 * WindowsService.name() (not tested)
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65 * WindowsService.status() (not tested)
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66 * WindowsService.username() (not tested)
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67
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68 In here we create a unicode path with a funky non-ASCII name and (where
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69 possible) make psutil return it back (e.g. on name(), exe(), open_files(),
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70 etc.) and make sure that:
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71
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72 * psutil never crashes with UnicodeDecodeError
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73 * the returned path matches
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74 """
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75
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76 import os
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77 import traceback
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78 import warnings
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79 from contextlib import closing
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80
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81 from psutil import BSD
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82 from psutil import MACOS
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83 from psutil import OPENBSD
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84 from psutil import POSIX
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85 from psutil import WINDOWS
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86 from psutil._compat import PY3
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87 from psutil._compat import u
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88 from psutil.tests import APPVEYOR
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89 from psutil.tests import CIRRUS
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90 from psutil.tests import ASCII_FS
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91 from psutil.tests import bind_unix_socket
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92 from psutil.tests import chdir
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93 from psutil.tests import copyload_shared_lib
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94 from psutil.tests import create_exe
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95 from psutil.tests import get_test_subprocess
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96 from psutil.tests import HAS_CONNECTIONS_UNIX
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97 from psutil.tests import HAS_ENVIRON
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98 from psutil.tests import HAS_MEMORY_MAPS
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99 from psutil.tests import PYPY
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100 from psutil.tests import reap_children
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101 from psutil.tests import safe_mkdir
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102 from psutil.tests import safe_rmpath as _safe_rmpath
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103 from psutil.tests import skip_on_access_denied
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104 from psutil.tests import TESTFILE_PREFIX
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105 from psutil.tests import TESTFN
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106 from psutil.tests import TESTFN_UNICODE
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107 from psutil.tests import TRAVIS
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108 from psutil.tests import unittest
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109 from psutil.tests import unix_socket_path
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110 import psutil
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111
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112
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113 def safe_rmpath(path):
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114 if APPVEYOR:
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115 # TODO - this is quite random and I'm not sure why it happens,
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116 # nor I can reproduce it locally:
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117 # https://ci.appveyor.com/project/giampaolo/psutil/build/job/
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118 # jiq2cgd6stsbtn60
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119 # safe_rmpath() happens after reap_children() so this is weird
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120 # Perhaps wait_procs() on Windows is broken? Maybe because
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121 # of STILL_ACTIVE?
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122 # https://github.com/giampaolo/psutil/blob/
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123 # 68c7a70728a31d8b8b58f4be6c4c0baa2f449eda/psutil/arch/
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124 # windows/process_info.c#L146
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125 try:
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126 return _safe_rmpath(path)
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127 except WindowsError:
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128 traceback.print_exc()
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129 else:
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130 return _safe_rmpath(path)
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131
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132
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133 def subprocess_supports_unicode(name):
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134 """Return True if both the fs and the subprocess module can
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135 deal with a unicode file name.
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136 """
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137 if PY3:
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138 return True
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139 try:
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140 safe_rmpath(name)
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141 create_exe(name)
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142 get_test_subprocess(cmd=[name])
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143 except UnicodeEncodeError:
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144 return False
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145 else:
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146 return True
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147 finally:
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148 reap_children()
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149
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150
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151 # An invalid unicode string.
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152 if PY3:
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153 INVALID_NAME = (TESTFN.encode('utf8') + b"f\xc0\x80").decode(
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154 'utf8', 'surrogateescape')
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155 else:
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156 INVALID_NAME = TESTFN + "f\xc0\x80"
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157
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158
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159 # ===================================================================
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160 # FS APIs
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161 # ===================================================================
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162
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163
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164 class _BaseFSAPIsTests(object):
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165 funky_name = None
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166
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167 @classmethod
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168 def setUpClass(cls):
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169 safe_rmpath(cls.funky_name)
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parents:
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170 create_exe(cls.funky_name)
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171
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172 @classmethod
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173 def tearDownClass(cls):
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174 reap_children()
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175 safe_rmpath(cls.funky_name)
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176
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177 def tearDown(self):
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178 reap_children()
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179
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180 def expect_exact_path_match(self):
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181 raise NotImplementedError("must be implemented in subclass")
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182
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183 def test_proc_exe(self):
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parents:
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184 subp = get_test_subprocess(cmd=[self.funky_name])
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185 p = psutil.Process(subp.pid)
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186 exe = p.exe()
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187 self.assertIsInstance(exe, str)
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188 if self.expect_exact_path_match():
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189 self.assertEqual(os.path.normcase(exe),
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parents:
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190 os.path.normcase(self.funky_name))
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191
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192 def test_proc_name(self):
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diff changeset
193 subp = get_test_subprocess(cmd=[self.funky_name])
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194 name = psutil.Process(subp.pid).name()
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parents:
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195 self.assertIsInstance(name, str)
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parents:
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196 if self.expect_exact_path_match():
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parents:
diff changeset
197 self.assertEqual(name, os.path.basename(self.funky_name))
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198
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199 def test_proc_cmdline(self):
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parents:
diff changeset
200 subp = get_test_subprocess(cmd=[self.funky_name])
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201 p = psutil.Process(subp.pid)
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parents:
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202 cmdline = p.cmdline()
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parents:
diff changeset
203 for part in cmdline:
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parents:
diff changeset
204 self.assertIsInstance(part, str)
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parents:
diff changeset
205 if self.expect_exact_path_match():
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parents:
diff changeset
206 self.assertEqual(cmdline, [self.funky_name])
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parents:
diff changeset
207
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diff changeset
208 def test_proc_cwd(self):
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shellac
parents:
diff changeset
209 dname = self.funky_name + "2"
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parents:
diff changeset
210 self.addCleanup(safe_rmpath, dname)
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parents:
diff changeset
211 safe_mkdir(dname)
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parents:
diff changeset
212 with chdir(dname):
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parents:
diff changeset
213 p = psutil.Process()
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parents:
diff changeset
214 cwd = p.cwd()
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parents:
diff changeset
215 self.assertIsInstance(p.cwd(), str)
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shellac
parents:
diff changeset
216 if self.expect_exact_path_match():
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parents:
diff changeset
217 self.assertEqual(cwd, dname)
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parents:
diff changeset
218
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parents:
diff changeset
219 @unittest.skipIf(PYPY and WINDOWS, "fails on PYPY + WINDOWS")
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parents:
diff changeset
220 def test_proc_open_files(self):
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parents:
diff changeset
221 p = psutil.Process()
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parents:
diff changeset
222 start = set(p.open_files())
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shellac
parents:
diff changeset
223 with open(self.funky_name, 'rb'):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
224 new = set(p.open_files())
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shellac
parents:
diff changeset
225 path = (new - start).pop().path
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shellac
parents:
diff changeset
226 self.assertIsInstance(path, str)
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shellac
parents:
diff changeset
227 if BSD and not path:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
228 # XXX - see https://github.com/giampaolo/psutil/issues/595
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shellac
parents:
diff changeset
229 return self.skipTest("open_files on BSD is broken")
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parents:
diff changeset
230 if self.expect_exact_path_match():
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shellac
parents:
diff changeset
231 self.assertEqual(os.path.normcase(path),
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shellac
parents:
diff changeset
232 os.path.normcase(self.funky_name))
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parents:
diff changeset
233
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parents:
diff changeset
234 @unittest.skipIf(not POSIX, "POSIX only")
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parents:
diff changeset
235 def test_proc_connections(self):
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parents:
diff changeset
236 suffix = os.path.basename(self.funky_name)
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shellac
parents:
diff changeset
237 with unix_socket_path(suffix=suffix) as name:
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shellac
parents:
diff changeset
238 try:
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parents:
diff changeset
239 sock = bind_unix_socket(name)
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shellac
parents:
diff changeset
240 except UnicodeEncodeError:
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shellac
parents:
diff changeset
241 if PY3:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
242 raise
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shellac
parents:
diff changeset
243 else:
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parents:
diff changeset
244 raise unittest.SkipTest("not supported")
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parents:
diff changeset
245 with closing(sock):
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parents:
diff changeset
246 conn = psutil.Process().connections('unix')[0]
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parents:
diff changeset
247 self.assertIsInstance(conn.laddr, str)
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parents:
diff changeset
248 # AF_UNIX addr not set on OpenBSD
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shellac
parents:
diff changeset
249 if not OPENBSD and not CIRRUS: # XXX
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parents:
diff changeset
250 self.assertEqual(conn.laddr, name)
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parents:
diff changeset
251
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parents:
diff changeset
252 @unittest.skipIf(not POSIX, "POSIX only")
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parents:
diff changeset
253 @unittest.skipIf(not HAS_CONNECTIONS_UNIX, "can't list UNIX sockets")
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shellac
parents:
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254 @skip_on_access_denied()
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255 def test_net_connections(self):
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256 def find_sock(cons):
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257 for conn in cons:
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258 if os.path.basename(conn.laddr).startswith(TESTFILE_PREFIX):
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259 return conn
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260 raise ValueError("connection not found")
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261
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262 suffix = os.path.basename(self.funky_name)
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263 with unix_socket_path(suffix=suffix) as name:
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264 try:
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265 sock = bind_unix_socket(name)
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266 except UnicodeEncodeError:
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267 if PY3:
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268 raise
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269 else:
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270 raise unittest.SkipTest("not supported")
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271 with closing(sock):
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272 cons = psutil.net_connections(kind='unix')
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273 # AF_UNIX addr not set on OpenBSD
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274 if not OPENBSD:
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275 conn = find_sock(cons)
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276 self.assertIsInstance(conn.laddr, str)
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277 self.assertEqual(conn.laddr, name)
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278
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279 def test_disk_usage(self):
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280 dname = self.funky_name + "2"
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281 self.addCleanup(safe_rmpath, dname)
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282 safe_mkdir(dname)
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283 psutil.disk_usage(dname)
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284
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285 @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
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286 @unittest.skipIf(not PY3, "ctypes does not support unicode on PY2")
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287 @unittest.skipIf(PYPY and WINDOWS,
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288 "copyload_shared_lib() unsupported on PYPY + WINDOWS")
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289 def test_memory_maps(self):
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290 # XXX: on Python 2, using ctypes.CDLL with a unicode path
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291 # opens a message box which blocks the test run.
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292 with copyload_shared_lib(dst_prefix=self.funky_name) as funky_path:
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293 def normpath(p):
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294 return os.path.realpath(os.path.normcase(p))
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295 libpaths = [normpath(x.path)
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296 for x in psutil.Process().memory_maps()]
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297 # ...just to have a clearer msg in case of failure
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298 libpaths = [x for x in libpaths if TESTFILE_PREFIX in x]
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299 self.assertIn(normpath(funky_path), libpaths)
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300 for path in libpaths:
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301 self.assertIsInstance(path, str)
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302
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303
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304 # https://travis-ci.org/giampaolo/psutil/jobs/440073249
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305 @unittest.skipIf(PYPY and TRAVIS, "unreliable on PYPY + TRAVIS")
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306 @unittest.skipIf(MACOS and TRAVIS, "unreliable on TRAVIS") # TODO
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307 @unittest.skipIf(ASCII_FS, "ASCII fs")
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308 @unittest.skipIf(not subprocess_supports_unicode(TESTFN_UNICODE),
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309 "subprocess can't deal with unicode")
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310 class TestFSAPIs(_BaseFSAPIsTests, unittest.TestCase):
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311 """Test FS APIs with a funky, valid, UTF8 path name."""
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312 funky_name = TESTFN_UNICODE
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313
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314 @classmethod
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315 def expect_exact_path_match(cls):
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316 # Do not expect psutil to correctly handle unicode paths on
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317 # Python 2 if os.listdir() is not able either.
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318 here = '.' if isinstance(cls.funky_name, str) else u('.')
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319 with warnings.catch_warnings():
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320 warnings.simplefilter("ignore")
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321 return cls.funky_name in os.listdir(here)
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322
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323
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324 @unittest.skipIf(PYPY and TRAVIS, "unreliable on PYPY + TRAVIS")
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325 @unittest.skipIf(MACOS and TRAVIS, "unreliable on TRAVIS") # TODO
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326 @unittest.skipIf(PYPY, "unreliable on PYPY")
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327 @unittest.skipIf(not subprocess_supports_unicode(INVALID_NAME),
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328 "subprocess can't deal with invalid unicode")
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329 class TestFSAPIsWithInvalidPath(_BaseFSAPIsTests, unittest.TestCase):
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330 """Test FS APIs with a funky, invalid path name."""
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331 funky_name = INVALID_NAME
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332
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333 @classmethod
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334 def expect_exact_path_match(cls):
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335 # Invalid unicode names are supposed to work on Python 2.
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336 return True
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337
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338
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339 # ===================================================================
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340 # Non fs APIs
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341 # ===================================================================
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342
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343
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344 class TestNonFSAPIS(unittest.TestCase):
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345 """Unicode tests for non fs-related APIs."""
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346
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347 def tearDown(self):
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348 reap_children()
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349
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350 @unittest.skipIf(not HAS_ENVIRON, "not supported")
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351 @unittest.skipIf(PYPY and WINDOWS, "segfaults on PYPY + WINDOWS")
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352 def test_proc_environ(self):
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353 # Note: differently from others, this test does not deal
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354 # with fs paths. On Python 2 subprocess module is broken as
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355 # it's not able to handle with non-ASCII env vars, so
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356 # we use "è", which is part of the extended ASCII table
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357 # (unicode point <= 255).
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358 env = os.environ.copy()
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359 funky_str = TESTFN_UNICODE if PY3 else 'è'
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360 env['FUNNY_ARG'] = funky_str
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361 sproc = get_test_subprocess(env=env)
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362 p = psutil.Process(sproc.pid)
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363 env = p.environ()
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364 for k, v in env.items():
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365 self.assertIsInstance(k, str)
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366 self.assertIsInstance(v, str)
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367 self.assertEqual(env['FUNNY_ARG'], funky_str)
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368
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369
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370 if __name__ == '__main__':
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371 from psutil.tests.runner import run
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372 run(__file__)