Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_kqueue.py @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents ef889c3d5dc6
children
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rev   line source
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1 """
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2 Tests for kqueue wrapper.
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3 """
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4 import errno
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5 import os
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6 import select
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7 import socket
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8 import sys
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9 import time
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10 import unittest
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11
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12 from test import support
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13 if not hasattr(select, "kqueue"):
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14 raise unittest.SkipTest("test works only on BSD")
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16 class TestKQueue(unittest.TestCase):
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17 def test_create_queue(self):
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18 kq = select.kqueue()
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19 self.assertTrue(kq.fileno() > 0, kq.fileno())
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20 self.assertTrue(not kq.closed)
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21 kq.close()
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22 self.assertTrue(kq.closed)
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23 self.assertRaises(ValueError, kq.fileno)
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25 def test_create_event(self):
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26 from operator import lt, le, gt, ge
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28 fd = os.open(os.devnull, os.O_WRONLY)
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29 self.addCleanup(os.close, fd)
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31 ev = select.kevent(fd)
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32 other = select.kevent(1000)
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33 self.assertEqual(ev.ident, fd)
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34 self.assertEqual(ev.filter, select.KQ_FILTER_READ)
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35 self.assertEqual(ev.flags, select.KQ_EV_ADD)
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36 self.assertEqual(ev.fflags, 0)
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37 self.assertEqual(ev.data, 0)
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38 self.assertEqual(ev.udata, 0)
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39 self.assertEqual(ev, ev)
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40 self.assertNotEqual(ev, other)
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41 self.assertTrue(ev < other)
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42 self.assertTrue(other >= ev)
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43 for op in lt, le, gt, ge:
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44 self.assertRaises(TypeError, op, ev, None)
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45 self.assertRaises(TypeError, op, ev, 1)
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46 self.assertRaises(TypeError, op, ev, "ev")
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48 ev = select.kevent(fd, select.KQ_FILTER_WRITE)
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49 self.assertEqual(ev.ident, fd)
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50 self.assertEqual(ev.filter, select.KQ_FILTER_WRITE)
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51 self.assertEqual(ev.flags, select.KQ_EV_ADD)
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52 self.assertEqual(ev.fflags, 0)
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53 self.assertEqual(ev.data, 0)
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54 self.assertEqual(ev.udata, 0)
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55 self.assertEqual(ev, ev)
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56 self.assertNotEqual(ev, other)
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57
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58 ev = select.kevent(fd, select.KQ_FILTER_WRITE, select.KQ_EV_ONESHOT)
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59 self.assertEqual(ev.ident, fd)
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60 self.assertEqual(ev.filter, select.KQ_FILTER_WRITE)
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61 self.assertEqual(ev.flags, select.KQ_EV_ONESHOT)
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62 self.assertEqual(ev.fflags, 0)
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63 self.assertEqual(ev.data, 0)
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64 self.assertEqual(ev.udata, 0)
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65 self.assertEqual(ev, ev)
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66 self.assertNotEqual(ev, other)
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67
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68 ev = select.kevent(1, 2, 3, 4, 5, 6)
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69 self.assertEqual(ev.ident, 1)
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70 self.assertEqual(ev.filter, 2)
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71 self.assertEqual(ev.flags, 3)
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72 self.assertEqual(ev.fflags, 4)
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73 self.assertEqual(ev.data, 5)
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74 self.assertEqual(ev.udata, 6)
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75 self.assertEqual(ev, ev)
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76 self.assertNotEqual(ev, other)
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77
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78 bignum = 0x7fff
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79 ev = select.kevent(bignum, 1, 2, 3, bignum - 1, bignum)
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80 self.assertEqual(ev.ident, bignum)
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81 self.assertEqual(ev.filter, 1)
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82 self.assertEqual(ev.flags, 2)
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83 self.assertEqual(ev.fflags, 3)
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84 self.assertEqual(ev.data, bignum - 1)
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85 self.assertEqual(ev.udata, bignum)
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86 self.assertEqual(ev, ev)
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87 self.assertNotEqual(ev, other)
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88
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89 def test_queue_event(self):
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90 serverSocket = socket.socket()
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91 serverSocket.bind(('127.0.0.1', 0))
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92 serverSocket.listen(1)
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93 client = socket.socket()
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94 client.setblocking(False)
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95 try:
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96 client.connect(('127.0.0.1', serverSocket.getsockname()[1]))
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97 except OSError as e:
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98 self.assertEqual(e.args[0], errno.EINPROGRESS)
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99 else:
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100 #raise AssertionError("Connect should have raised EINPROGRESS")
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101 pass # FreeBSD doesn't raise an exception here
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102 server, addr = serverSocket.accept()
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103
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104 kq = select.kqueue()
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105 kq2 = select.kqueue.fromfd(kq.fileno())
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106
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107 ev = select.kevent(server.fileno(),
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108 select.KQ_FILTER_WRITE,
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109 select.KQ_EV_ADD | select.KQ_EV_ENABLE)
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110 kq.control([ev], 0)
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111 ev = select.kevent(server.fileno(),
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112 select.KQ_FILTER_READ,
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113 select.KQ_EV_ADD | select.KQ_EV_ENABLE)
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114 kq.control([ev], 0)
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115 ev = select.kevent(client.fileno(),
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116 select.KQ_FILTER_WRITE,
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117 select.KQ_EV_ADD | select.KQ_EV_ENABLE)
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118 kq2.control([ev], 0)
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119 ev = select.kevent(client.fileno(),
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120 select.KQ_FILTER_READ,
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121 select.KQ_EV_ADD | select.KQ_EV_ENABLE)
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122 kq2.control([ev], 0)
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123
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124 events = kq.control(None, 4, 1)
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125 events = set((e.ident, e.filter) for e in events)
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126 self.assertEqual(events, set([
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127 (client.fileno(), select.KQ_FILTER_WRITE),
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128 (server.fileno(), select.KQ_FILTER_WRITE)]))
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129
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130 client.send(b"Hello!")
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131 server.send(b"world!!!")
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132
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133 # We may need to call it several times
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134 for i in range(10):
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135 events = kq.control(None, 4, 1)
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136 if len(events) == 4:
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137 break
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138 time.sleep(1.0)
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139 else:
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140 self.fail('timeout waiting for event notifications')
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141
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142 events = set((e.ident, e.filter) for e in events)
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143 self.assertEqual(events, set([
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144 (client.fileno(), select.KQ_FILTER_WRITE),
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145 (client.fileno(), select.KQ_FILTER_READ),
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146 (server.fileno(), select.KQ_FILTER_WRITE),
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147 (server.fileno(), select.KQ_FILTER_READ)]))
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148
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149 # Remove completely client, and server read part
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150 ev = select.kevent(client.fileno(),
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151 select.KQ_FILTER_WRITE,
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152 select.KQ_EV_DELETE)
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153 kq.control([ev], 0)
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154 ev = select.kevent(client.fileno(),
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155 select.KQ_FILTER_READ,
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156 select.KQ_EV_DELETE)
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157 kq.control([ev], 0)
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158 ev = select.kevent(server.fileno(),
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159 select.KQ_FILTER_READ,
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160 select.KQ_EV_DELETE)
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161 kq.control([ev], 0, 0)
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162
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163 events = kq.control([], 4, 0.99)
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164 events = set((e.ident, e.filter) for e in events)
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165 self.assertEqual(events, set([
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166 (server.fileno(), select.KQ_FILTER_WRITE)]))
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167
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168 client.close()
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169 server.close()
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170 serverSocket.close()
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171
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172 def testPair(self):
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173 kq = select.kqueue()
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174 a, b = socket.socketpair()
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175
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176 a.send(b'foo')
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177 event1 = select.kevent(a, select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE)
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178 event2 = select.kevent(b, select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE)
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179 r = kq.control([event1, event2], 1, 1)
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180 self.assertTrue(r)
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181 self.assertFalse(r[0].flags & select.KQ_EV_ERROR)
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182 self.assertEqual(b.recv(r[0].data), b'foo')
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183
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184 a.close()
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185 b.close()
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186 kq.close()
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187
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188 def test_close(self):
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189 open_file = open(__file__, "rb")
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190 self.addCleanup(open_file.close)
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191 fd = open_file.fileno()
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192 kqueue = select.kqueue()
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193
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194 # test fileno() method and closed attribute
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195 self.assertIsInstance(kqueue.fileno(), int)
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196 self.assertFalse(kqueue.closed)
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197
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198 # test close()
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199 kqueue.close()
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200 self.assertTrue(kqueue.closed)
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201 self.assertRaises(ValueError, kqueue.fileno)
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202
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203 # close() can be called more than once
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204 kqueue.close()
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205
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206 # operations must fail with ValueError("I/O operation on closed ...")
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207 self.assertRaises(ValueError, kqueue.control, None, 4)
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208
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209 def test_fd_non_inheritable(self):
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210 kqueue = select.kqueue()
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211 self.addCleanup(kqueue.close)
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212 self.assertEqual(os.get_inheritable(kqueue.fileno()), False)
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213
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214
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215 def test_main():
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216 support.run_unittest(TestKQueue)
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218 if __name__ == "__main__":
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219 test_main()