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annotate planemo/lib/python3.7/site-packages/psutil/tests/test_testutils.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1
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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 Tests for testing utils (psutil.tests namespace).
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10 """
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11
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12 import collections
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13 import contextlib
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14 import errno
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15 import os
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16 import socket
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17 import stat
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18 import subprocess
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19
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20 from psutil import FREEBSD
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21 from psutil import NETBSD
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22 from psutil import POSIX
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23 from psutil._common import open_binary
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24 from psutil._common import open_text
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25 from psutil._common import supports_ipv6
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26 from psutil.tests import bind_socket
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27 from psutil.tests import bind_unix_socket
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28 from psutil.tests import call_until
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29 from psutil.tests import chdir
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30 from psutil.tests import CI_TESTING
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31 from psutil.tests import create_sockets
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32 from psutil.tests import get_free_port
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33 from psutil.tests import HAS_CONNECTIONS_UNIX
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34 from psutil.tests import is_namedtuple
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35 from psutil.tests import mock
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36 from psutil.tests import process_namespace
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37 from psutil.tests import PsutilTestCase
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38 from psutil.tests import PYTHON_EXE
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39 from psutil.tests import reap_children
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40 from psutil.tests import retry
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41 from psutil.tests import retry_on_failure
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42 from psutil.tests import safe_mkdir
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43 from psutil.tests import safe_rmpath
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44 from psutil.tests import serialrun
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45 from psutil.tests import system_namespace
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46 from psutil.tests import tcp_socketpair
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47 from psutil.tests import terminate
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48 from psutil.tests import TestMemoryLeak
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49 from psutil.tests import unittest
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50 from psutil.tests import unix_socketpair
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51 from psutil.tests import wait_for_file
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52 from psutil.tests import wait_for_pid
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53 import psutil
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54 import psutil.tests
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55
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56 # ===================================================================
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57 # --- Unit tests for test utilities.
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58 # ===================================================================
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59
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60
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61 class TestRetryDecorator(PsutilTestCase):
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62
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63 @mock.patch('time.sleep')
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64 def test_retry_success(self, sleep):
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65 # Fail 3 times out of 5; make sure the decorated fun returns.
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66
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67 @retry(retries=5, interval=1, logfun=None)
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68 def foo():
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69 while queue:
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70 queue.pop()
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71 1 / 0
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72 return 1
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73
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74 queue = list(range(3))
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75 self.assertEqual(foo(), 1)
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76 self.assertEqual(sleep.call_count, 3)
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77
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78 @mock.patch('time.sleep')
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79 def test_retry_failure(self, sleep):
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80 # Fail 6 times out of 5; th function is supposed to raise exc.
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81 @retry(retries=5, interval=1, logfun=None)
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82 def foo():
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83 while queue:
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84 queue.pop()
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85 1 / 0
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86 return 1
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87
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88 queue = list(range(6))
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89 self.assertRaises(ZeroDivisionError, foo)
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90 self.assertEqual(sleep.call_count, 5)
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91
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92 @mock.patch('time.sleep')
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93 def test_exception_arg(self, sleep):
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94 @retry(exception=ValueError, interval=1)
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95 def foo():
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96 raise TypeError
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97
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98 self.assertRaises(TypeError, foo)
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99 self.assertEqual(sleep.call_count, 0)
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100
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101 @mock.patch('time.sleep')
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102 def test_no_interval_arg(self, sleep):
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103 # if interval is not specified sleep is not supposed to be called
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104
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105 @retry(retries=5, interval=None, logfun=None)
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106 def foo():
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107 1 / 0
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108
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109 self.assertRaises(ZeroDivisionError, foo)
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110 self.assertEqual(sleep.call_count, 0)
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111
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112 @mock.patch('time.sleep')
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113 def test_retries_arg(self, sleep):
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114
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115 @retry(retries=5, interval=1, logfun=None)
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116 def foo():
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117 1 / 0
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118
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119 self.assertRaises(ZeroDivisionError, foo)
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120 self.assertEqual(sleep.call_count, 5)
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121
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122 @mock.patch('time.sleep')
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123 def test_retries_and_timeout_args(self, sleep):
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124 self.assertRaises(ValueError, retry, retries=5, timeout=1)
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125
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126
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127 class TestSyncTestUtils(PsutilTestCase):
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128
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129 def test_wait_for_pid(self):
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130 wait_for_pid(os.getpid())
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131 nopid = max(psutil.pids()) + 99999
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132 with mock.patch('psutil.tests.retry.__iter__', return_value=iter([0])):
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133 self.assertRaises(psutil.NoSuchProcess, wait_for_pid, nopid)
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134
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135 def test_wait_for_file(self):
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136 testfn = self.get_testfn()
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137 with open(testfn, 'w') as f:
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138 f.write('foo')
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139 wait_for_file(testfn)
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140 assert not os.path.exists(testfn)
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141
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142 def test_wait_for_file_empty(self):
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143 testfn = self.get_testfn()
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144 with open(testfn, 'w'):
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145 pass
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146 wait_for_file(testfn, empty=True)
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147 assert not os.path.exists(testfn)
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148
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149 def test_wait_for_file_no_file(self):
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150 testfn = self.get_testfn()
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151 with mock.patch('psutil.tests.retry.__iter__', return_value=iter([0])):
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152 self.assertRaises(IOError, wait_for_file, testfn)
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153
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154 def test_wait_for_file_no_delete(self):
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155 testfn = self.get_testfn()
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156 with open(testfn, 'w') as f:
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157 f.write('foo')
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158 wait_for_file(testfn, delete=False)
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159 assert os.path.exists(testfn)
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160
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161 def test_call_until(self):
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162 ret = call_until(lambda: 1, "ret == 1")
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163 self.assertEqual(ret, 1)
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164
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165
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166 class TestFSTestUtils(PsutilTestCase):
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167
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168 def test_open_text(self):
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169 with open_text(__file__) as f:
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170 self.assertEqual(f.mode, 'rt')
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171
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172 def test_open_binary(self):
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173 with open_binary(__file__) as f:
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174 self.assertEqual(f.mode, 'rb')
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175
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176 def test_safe_mkdir(self):
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177 testfn = self.get_testfn()
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178 safe_mkdir(testfn)
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179 assert os.path.isdir(testfn)
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180 safe_mkdir(testfn)
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181 assert os.path.isdir(testfn)
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182
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183 def test_safe_rmpath(self):
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184 # test file is removed
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185 testfn = self.get_testfn()
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186 open(testfn, 'w').close()
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187 safe_rmpath(testfn)
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188 assert not os.path.exists(testfn)
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189 # test no exception if path does not exist
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190 safe_rmpath(testfn)
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191 # test dir is removed
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192 os.mkdir(testfn)
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193 safe_rmpath(testfn)
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194 assert not os.path.exists(testfn)
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195 # test other exceptions are raised
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196 with mock.patch('psutil.tests.os.stat',
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197 side_effect=OSError(errno.EINVAL, "")) as m:
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198 with self.assertRaises(OSError):
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199 safe_rmpath(testfn)
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200 assert m.called
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201
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202 def test_chdir(self):
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203 testfn = self.get_testfn()
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204 base = os.getcwd()
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205 os.mkdir(testfn)
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206 with chdir(testfn):
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207 self.assertEqual(os.getcwd(), os.path.join(base, testfn))
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208 self.assertEqual(os.getcwd(), base)
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209
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210
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211 class TestProcessUtils(PsutilTestCase):
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212
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213 def test_reap_children(self):
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214 subp = self.spawn_testproc()
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215 p = psutil.Process(subp.pid)
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216 assert p.is_running()
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217 reap_children()
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218 assert not p.is_running()
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219 assert not psutil.tests._pids_started
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220 assert not psutil.tests._subprocesses_started
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221
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222 def test_spawn_children_pair(self):
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223 child, grandchild = self.spawn_children_pair()
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224 self.assertNotEqual(child.pid, grandchild.pid)
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225 assert child.is_running()
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226 assert grandchild.is_running()
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227 children = psutil.Process().children()
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228 self.assertEqual(children, [child])
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229 children = psutil.Process().children(recursive=True)
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230 self.assertEqual(len(children), 2)
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231 self.assertIn(child, children)
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232 self.assertIn(grandchild, children)
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233 self.assertEqual(child.ppid(), os.getpid())
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234 self.assertEqual(grandchild.ppid(), child.pid)
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235
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236 terminate(child)
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237 assert not child.is_running()
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238 assert grandchild.is_running()
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239
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240 terminate(grandchild)
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241 assert not grandchild.is_running()
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242
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243 @unittest.skipIf(not POSIX, "POSIX only")
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244 def test_spawn_zombie(self):
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245 parent, zombie = self.spawn_zombie()
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246 self.assertEqual(zombie.status(), psutil.STATUS_ZOMBIE)
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247
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248 def test_terminate(self):
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249 # by subprocess.Popen
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250 p = self.spawn_testproc()
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251 terminate(p)
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252 self.assertProcessGone(p)
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253 terminate(p)
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254 # by psutil.Process
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255 p = psutil.Process(self.spawn_testproc().pid)
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256 terminate(p)
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257 self.assertProcessGone(p)
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258 terminate(p)
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259 # by psutil.Popen
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260 cmd = [PYTHON_EXE, "-c", "import time; time.sleep(60);"]
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261 p = psutil.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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262 terminate(p)
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263 self.assertProcessGone(p)
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264 terminate(p)
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265 # by PID
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266 pid = self.spawn_testproc().pid
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267 terminate(pid)
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268 self.assertProcessGone(p)
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269 terminate(pid)
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270 # zombie
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271 if POSIX:
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272 parent, zombie = self.spawn_zombie()
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273 terminate(parent)
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274 terminate(zombie)
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275 self.assertProcessGone(parent)
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276 self.assertProcessGone(zombie)
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277
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278
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279 class TestNetUtils(PsutilTestCase):
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280
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281 def bind_socket(self):
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282 port = get_free_port()
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283 with contextlib.closing(bind_socket(addr=('', port))) as s:
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284 self.assertEqual(s.getsockname()[1], port)
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285
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286 @unittest.skipIf(not POSIX, "POSIX only")
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287 def test_bind_unix_socket(self):
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288 name = self.get_testfn()
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289 sock = bind_unix_socket(name)
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290 with contextlib.closing(sock):
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291 self.assertEqual(sock.family, socket.AF_UNIX)
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292 self.assertEqual(sock.type, socket.SOCK_STREAM)
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293 self.assertEqual(sock.getsockname(), name)
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294 assert os.path.exists(name)
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295 assert stat.S_ISSOCK(os.stat(name).st_mode)
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296 # UDP
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297 name = self.get_testfn()
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298 sock = bind_unix_socket(name, type=socket.SOCK_DGRAM)
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299 with contextlib.closing(sock):
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300 self.assertEqual(sock.type, socket.SOCK_DGRAM)
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301
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302 def tcp_tcp_socketpair(self):
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303 addr = ("127.0.0.1", get_free_port())
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304 server, client = tcp_socketpair(socket.AF_INET, addr=addr)
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305 with contextlib.closing(server):
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306 with contextlib.closing(client):
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307 # Ensure they are connected and the positions are
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308 # correct.
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309 self.assertEqual(server.getsockname(), addr)
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310 self.assertEqual(client.getpeername(), addr)
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311 self.assertNotEqual(client.getsockname(), addr)
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312
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313 @unittest.skipIf(not POSIX, "POSIX only")
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314 @unittest.skipIf(NETBSD or FREEBSD,
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315 "/var/run/log UNIX socket opened by default")
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316 def test_unix_socketpair(self):
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317 p = psutil.Process()
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318 num_fds = p.num_fds()
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319 assert not p.connections(kind='unix')
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320 name = self.get_testfn()
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321 server, client = unix_socketpair(name)
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322 try:
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323 assert os.path.exists(name)
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324 assert stat.S_ISSOCK(os.stat(name).st_mode)
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325 self.assertEqual(p.num_fds() - num_fds, 2)
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326 self.assertEqual(len(p.connections(kind='unix')), 2)
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327 self.assertEqual(server.getsockname(), name)
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328 self.assertEqual(client.getpeername(), name)
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329 finally:
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330 client.close()
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331 server.close()
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332
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333 def test_create_sockets(self):
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334 with create_sockets() as socks:
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335 fams = collections.defaultdict(int)
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336 types = collections.defaultdict(int)
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337 for s in socks:
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338 fams[s.family] += 1
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339 # work around http://bugs.python.org/issue30204
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340 types[s.getsockopt(socket.SOL_SOCKET, socket.SO_TYPE)] += 1
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341 self.assertGreaterEqual(fams[socket.AF_INET], 2)
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342 if supports_ipv6():
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343 self.assertGreaterEqual(fams[socket.AF_INET6], 2)
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344 if POSIX and HAS_CONNECTIONS_UNIX:
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345 self.assertGreaterEqual(fams[socket.AF_UNIX], 2)
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346 self.assertGreaterEqual(types[socket.SOCK_STREAM], 2)
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347 self.assertGreaterEqual(types[socket.SOCK_DGRAM], 2)
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348
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349
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350 @serialrun
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351 class TestMemLeakClass(TestMemoryLeak):
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352
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353 def test_times(self):
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354 def fun():
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355 cnt['cnt'] += 1
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356 cnt = {'cnt': 0}
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357 self.execute(fun, times=10, warmup_times=15)
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358 self.assertEqual(cnt['cnt'], 26)
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359
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360 def test_param_err(self):
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361 self.assertRaises(ValueError, self.execute, lambda: 0, times=0)
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362 self.assertRaises(ValueError, self.execute, lambda: 0, times=-1)
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363 self.assertRaises(ValueError, self.execute, lambda: 0, warmup_times=-1)
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364 self.assertRaises(ValueError, self.execute, lambda: 0, tolerance=-1)
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365 self.assertRaises(ValueError, self.execute, lambda: 0, retries=-1)
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366
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367 @retry_on_failure()
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368 @unittest.skipIf(CI_TESTING, "skipped on CI")
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369 def test_leak_mem(self):
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370 ls = []
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371
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372 def fun(ls=ls):
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373 ls.append("x" * 24 * 1024)
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374
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375 try:
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376 # will consume around 3M in total
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377 self.assertRaisesRegex(AssertionError, "extra-mem",
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378 self.execute, fun, times=50)
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379 finally:
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380 del ls
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381
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382 def test_unclosed_files(self):
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383 def fun():
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384 f = open(__file__)
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385 self.addCleanup(f.close)
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386 box.append(f)
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387
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388 box = []
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389 kind = "fd" if POSIX else "handle"
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390 self.assertRaisesRegex(AssertionError, "unclosed " + kind,
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391 self.execute, fun)
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392
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393 def test_tolerance(self):
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394 def fun():
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395 ls.append("x" * 24 * 1024)
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396 ls = []
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397 times = 100
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398 self.execute(fun, times=times, warmup_times=0,
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399 tolerance=200 * 1024 * 1024)
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400 self.assertEqual(len(ls), times + 1)
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401
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402 def test_execute_w_exc(self):
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403 def fun():
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404 1 / 0
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405 self.execute_w_exc(ZeroDivisionError, fun)
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406 with self.assertRaises(ZeroDivisionError):
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407 self.execute_w_exc(OSError, fun)
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408
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409 def fun():
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410 pass
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411 with self.assertRaises(AssertionError):
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412 self.execute_w_exc(ZeroDivisionError, fun)
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413
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414
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415 class TestTestingUtils(PsutilTestCase):
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416
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417 def test_process_namespace(self):
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418 p = psutil.Process()
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419 ns = process_namespace(p)
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420 ns.test()
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421 fun = [x for x in ns.iter(ns.getters) if x[1] == 'ppid'][0][0]
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422 self.assertEqual(fun(), p.ppid())
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423
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424 def test_system_namespace(self):
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425 ns = system_namespace()
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426 fun = [x for x in ns.iter(ns.getters) if x[1] == 'net_if_addrs'][0][0]
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427 self.assertEqual(fun(), psutil.net_if_addrs())
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428
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429
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430 class TestOtherUtils(PsutilTestCase):
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431
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432 def test_is_namedtuple(self):
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433 assert is_namedtuple(collections.namedtuple('foo', 'a b c')(1, 2, 3))
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434 assert not is_namedtuple(tuple())
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435
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436
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437 if __name__ == '__main__':
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438 from psutil.tests.runner import run_from_name
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439 run_from_name(__file__)