Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_fcntl.py @ 54294:dba767bc3155 legacy-trunk

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remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents 7641a3f0b2ec
children 3428acd31e45
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4755
1de96c572b02 Added a test script for the fcntl C module.
Roger E. Masse <rmasse@newcnri.cnri.reston.va.us>
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1 """Test program for the fcntl C module.
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2
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3 OS/2+EMX doesn't support the file locking operations.
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4
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5 """
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6 import os
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7 import struct
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8 import sys
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9 import unittest
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10 from test.test_support import (verbose, TESTFN, unlink, run_unittest,
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11 import_module)
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12
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13 # Skip test if no fnctl module.
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14 fcntl = import_module('fcntl')
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15
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16
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17 # TODO - Write tests for flock() and lockf().
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18
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19 def get_lockdata():
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20 if sys.platform.startswith('atheos'):
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21 start_len = "qq"
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22 else:
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23 try:
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24 os.O_LARGEFILE
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25 except AttributeError:
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26 start_len = "ll"
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27 else:
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28 start_len = "qq"
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29
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30 if sys.platform in ('netbsd1', 'netbsd2', 'netbsd3',
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31 'Darwin1.2', 'darwin',
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32 'freebsd2', 'freebsd3', 'freebsd4', 'freebsd5',
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33 'freebsd6', 'freebsd7', 'freebsd8',
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34 'bsdos2', 'bsdos3', 'bsdos4',
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35 'openbsd', 'openbsd2', 'openbsd3', 'openbsd4'):
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36 if struct.calcsize('l') == 8:
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37 off_t = 'l'
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38 pid_t = 'i'
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39 else:
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40 off_t = 'lxxxx'
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41 pid_t = 'l'
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42 lockdata = struct.pack(off_t + off_t + pid_t + 'hh', 0, 0, 0,
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43 fcntl.F_WRLCK, 0)
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44 elif sys.platform in ['aix3', 'aix4', 'hp-uxB', 'unixware7']:
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45 lockdata = struct.pack('hhlllii', fcntl.F_WRLCK, 0, 0, 0, 0, 0, 0)
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46 elif sys.platform in ['os2emx']:
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47 lockdata = None
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48 else:
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49 lockdata = struct.pack('hh'+start_len+'hh', fcntl.F_WRLCK, 0, 0, 0, 0, 0)
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50 if lockdata:
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51 if verbose:
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52 print 'struct.pack: ', repr(lockdata)
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53 return lockdata
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54
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55 lockdata = get_lockdata()
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56
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57
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58 class TestFcntl(unittest.TestCase):
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59
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60 def setUp(self):
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61 self.f = None
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62
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63 def tearDown(self):
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64 if not self.f.closed:
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65 self.f.close()
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66 unlink(TESTFN)
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67
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68 def test_fcntl_fileno(self):
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69 # the example from the library docs
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70 self.f = open(TESTFN, 'w')
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71 rv = fcntl.fcntl(self.f.fileno(), fcntl.F_SETFL, os.O_NONBLOCK)
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72 if verbose:
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73 print 'Status from fcntl with O_NONBLOCK: ', rv
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74 if sys.platform not in ['os2emx']:
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75 rv = fcntl.fcntl(self.f.fileno(), fcntl.F_SETLKW, lockdata)
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76 if verbose:
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77 print 'String from fcntl with F_SETLKW: ', repr(rv)
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78 self.f.close()
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79
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80 def test_fcntl_file_descriptor(self):
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81 # again, but pass the file rather than numeric descriptor
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82 self.f = open(TESTFN, 'w')
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83 rv = fcntl.fcntl(self.f, fcntl.F_SETFL, os.O_NONBLOCK)
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84 if sys.platform not in ['os2emx']:
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85 rv = fcntl.fcntl(self.f, fcntl.F_SETLKW, lockdata)
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86 self.f.close()
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87
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88
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89 def test_main():
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90 run_unittest(TestFcntl)
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91
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92 if __name__ == '__main__':
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93 test_main()