Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_select.py @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents 02a5322b0cee
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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49dc9af90b3d Convert test_contains, test_crypt, and test_select to unittest.
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1 from test import test_support
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2 import unittest
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8015c5549309 A test of the select module that is actually reproduceable!
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3 import select
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4 import os
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5 import sys
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6
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7 @unittest.skipIf(sys.platform[:3] in ('win', 'os2', 'riscos'),
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8 "can't easily test on this system")
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9 class SelectTestCase(unittest.TestCase):
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10
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11 class Nope:
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12 pass
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13
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14 class Almost:
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15 def fileno(self):
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16 return 'fileno'
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17
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18 def test_error_conditions(self):
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19 self.assertRaises(TypeError, select.select, 1, 2, 3)
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20 self.assertRaises(TypeError, select.select, [self.Nope()], [], [])
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21 self.assertRaises(TypeError, select.select, [self.Almost()], [], [])
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22 self.assertRaises(TypeError, select.select, [], [], [], "not a number")
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23
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24 def test_returned_list_identity(self):
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25 # See issue #8329
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26 r, w, x = select.select([], [], [], 1)
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27 self.assertIsNot(r, w)
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28 self.assertIsNot(r, x)
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29 self.assertIsNot(w, x)
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30
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31 def test_select(self):
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32 cmd = 'for i in 0 1 2 3 4 5 6 7 8 9; do echo testing...; sleep 1; done'
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33 p = os.popen(cmd, 'r')
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34 for tout in (0, 1, 2, 4, 8, 16) + (None,)*10:
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35 if test_support.verbose:
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36 print 'timeout =', tout
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37 rfd, wfd, xfd = select.select([p], [], [], tout)
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38 if (rfd, wfd, xfd) == ([], [], []):
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39 continue
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40 if (rfd, wfd, xfd) == ([p], [], []):
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41 line = p.readline()
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42 if test_support.verbose:
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43 print repr(line)
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44 if not line:
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45 if test_support.verbose:
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46 print 'EOF'
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47 break
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48 continue
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49 self.fail('Unexpected return values from select():', rfd, wfd, xfd)
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50 p.close()
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51
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52 # Issue 16230: Crash on select resized list
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53 def test_select_mutated(self):
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54 a = []
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55 class F:
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56 def fileno(self):
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57 del a[-1]
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58 return sys.__stdout__.fileno()
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59 a[:] = [F()] * 10
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60 self.assertEqual(select.select([], a, []), ([], a[:5], []))
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61
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62 def test_main():
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63 test_support.run_unittest(SelectTestCase)
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64 test_support.reap_children()
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65
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66 if __name__ == "__main__":
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67 test_main()