Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_devpoll.py @ 86127:a3d09c19bb93

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merge with 3.3
author Georg Brandl <georg@python.org>
date Sun, 06 Oct 2013 19:24:00 +0200
parents ef889c3d5dc6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # Test case for the select.devpoll() function
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2
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3 # Initial tests are copied as is from "test_poll.py"
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4
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5 import os
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6 import random
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7 import select
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8 import sys
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9 import unittest
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10 from test.support import TESTFN, run_unittest
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11
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12 try:
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13 select.devpoll
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14 except AttributeError:
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15 raise unittest.SkipTest("select.devpoll not defined")
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16
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17
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18 def find_ready_matching(ready, flag):
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19 match = []
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20 for fd, mode in ready:
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21 if mode & flag:
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22 match.append(fd)
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23 return match
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24
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25 class DevPollTests(unittest.TestCase):
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27 def test_devpoll1(self):
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28 # Basic functional test of poll object
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29 # Create a bunch of pipe and test that poll works with them.
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30
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31 p = select.devpoll()
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32
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33 NUM_PIPES = 12
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34 MSG = b" This is a test."
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35 MSG_LEN = len(MSG)
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36 readers = []
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37 writers = []
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38 r2w = {}
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39 w2r = {}
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40
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41 for i in range(NUM_PIPES):
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42 rd, wr = os.pipe()
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43 p.register(rd)
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44 p.modify(rd, select.POLLIN)
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45 p.register(wr, select.POLLOUT)
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46 readers.append(rd)
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47 writers.append(wr)
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48 r2w[rd] = wr
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49 w2r[wr] = rd
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50
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51 bufs = []
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52
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53 while writers:
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54 ready = p.poll()
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55 ready_writers = find_ready_matching(ready, select.POLLOUT)
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56 if not ready_writers:
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57 self.fail("no pipes ready for writing")
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58 wr = random.choice(ready_writers)
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59 os.write(wr, MSG)
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60
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61 ready = p.poll()
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62 ready_readers = find_ready_matching(ready, select.POLLIN)
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63 if not ready_readers:
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64 self.fail("no pipes ready for reading")
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65 self.assertEqual([w2r[wr]], ready_readers)
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66 rd = ready_readers[0]
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67 buf = os.read(rd, MSG_LEN)
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68 self.assertEqual(len(buf), MSG_LEN)
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69 bufs.append(buf)
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70 os.close(r2w[rd]) ; os.close(rd)
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71 p.unregister(r2w[rd])
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72 p.unregister(rd)
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73 writers.remove(r2w[rd])
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74
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75 self.assertEqual(bufs, [MSG] * NUM_PIPES)
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76
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77 def test_timeout_overflow(self):
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78 pollster = select.devpoll()
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79 w, r = os.pipe()
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80 pollster.register(w)
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81
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82 pollster.poll(-1)
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83 self.assertRaises(OverflowError, pollster.poll, -2)
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84 self.assertRaises(OverflowError, pollster.poll, -1 << 31)
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85 self.assertRaises(OverflowError, pollster.poll, -1 << 64)
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86
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87 pollster.poll(0)
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88 pollster.poll(1)
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89 pollster.poll(1 << 30)
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90 self.assertRaises(OverflowError, pollster.poll, 1 << 31)
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91 self.assertRaises(OverflowError, pollster.poll, 1 << 63)
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92 self.assertRaises(OverflowError, pollster.poll, 1 << 64)
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93
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94 def test_close(self):
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95 open_file = open(__file__, "rb")
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96 self.addCleanup(open_file.close)
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97 fd = open_file.fileno()
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98 devpoll = select.devpoll()
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99
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100 # test fileno() method and closed attribute
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101 self.assertIsInstance(devpoll.fileno(), int)
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102 self.assertFalse(devpoll.closed)
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103
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104 # test close()
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105 devpoll.close()
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106 self.assertTrue(devpoll.closed)
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107 self.assertRaises(ValueError, devpoll.fileno)
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108
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109 # close() can be called more than once
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110 devpoll.close()
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111
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112 # operations must fail with ValueError("I/O operation on closed ...")
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113 self.assertRaises(ValueError, devpoll.modify, fd, select.POLLIN)
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114 self.assertRaises(ValueError, devpoll.poll)
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115 self.assertRaises(ValueError, devpoll.register, fd, fd, select.POLLIN)
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116 self.assertRaises(ValueError, devpoll.unregister, fd)
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117
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118 def test_fd_non_inheritable(self):
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119 devpoll = select.devpoll()
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120 self.addCleanup(devpoll.close)
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121 self.assertEqual(os.get_inheritable(devpoll.fileno()), False)
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122
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ccbe2132392b Close #18794: Add a fileno() method and a closed attribute to select.devpoll
Victor Stinner <victor.stinner@gmail.com>
parents: 81589
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123
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Thomas Wouters <thomas@python.org>
parents: 36121
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124 def test_main():
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8f7ab4bf7ad9 Issue #6397: Support '/dev/poll' polling objects in select module, under Solaris & derivatives.
Jesus Cea <jcea@jcea.es>
parents: 52389
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125 run_unittest(DevPollTests)
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686306a67e9b Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 35834
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126
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Thomas Wouters <thomas@python.org>
parents: 36121
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127 if __name__ == '__main__':
cc992d75d5b3 Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents: 36121
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128 test_main()