90 lines
2.6 KiB
Python
Executable File
90 lines
2.6 KiB
Python
Executable File
"""Test program for the fcntl C module.
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OS/2+EMX doesn't support the file locking operations.
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"""
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import fcntl
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import os
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import struct
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import sys
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import unittest
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from test.test_support import verbose, TESTFN, unlink, run_unittest
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# TODO - Write tests for flock() and lockf().
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def get_lockdata():
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if sys.platform.startswith('atheos'):
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start_len = "qq"
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else:
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try:
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os.O_LARGEFILE
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except AttributeError:
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start_len = "ll"
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else:
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start_len = "qq"
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if sys.platform in ('netbsd1', 'netbsd2', 'netbsd3',
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'Darwin1.2', 'darwin',
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'freebsd2', 'freebsd3', 'freebsd4', 'freebsd5',
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'freebsd6', 'freebsd7', 'freebsd8',
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'bsdos2', 'bsdos3', 'bsdos4',
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'openbsd', 'openbsd2', 'openbsd3', 'openbsd4'):
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if struct.calcsize('l') == 8:
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off_t = 'l'
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pid_t = 'i'
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else:
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off_t = 'lxxxx'
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pid_t = 'l'
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lockdata = struct.pack(off_t + off_t + pid_t + 'hh', 0, 0, 0,
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fcntl.F_WRLCK, 0)
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elif sys.platform in ['aix3', 'aix4', 'hp-uxB', 'unixware7']:
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lockdata = struct.pack('hhlllii', fcntl.F_WRLCK, 0, 0, 0, 0, 0, 0)
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elif sys.platform in ['os2emx']:
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lockdata = None
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else:
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lockdata = struct.pack('hh'+start_len+'hh', fcntl.F_WRLCK, 0, 0, 0, 0, 0)
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if lockdata:
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if verbose:
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print 'struct.pack: ', repr(lockdata)
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return lockdata
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lockdata = get_lockdata()
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class TestFcntl(unittest.TestCase):
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def setUp(self):
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self.f = None
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def tearDown(self):
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if not self.f.closed:
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self.f.close()
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unlink(TESTFN)
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def test_fcntl_fileno(self):
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# the example from the library docs
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self.f = open(TESTFN, 'w')
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rv = fcntl.fcntl(self.f.fileno(), fcntl.F_SETFL, os.O_NONBLOCK)
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if verbose:
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print 'Status from fcntl with O_NONBLOCK: ', rv
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if sys.platform not in ['os2emx']:
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rv = fcntl.fcntl(self.f.fileno(), fcntl.F_SETLKW, lockdata)
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if verbose:
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print 'String from fcntl with F_SETLKW: ', repr(rv)
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self.f.close()
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def test_fcntl_file_descriptor(self):
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# again, but pass the file rather than numeric descriptor
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self.f = open(TESTFN, 'w')
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rv = fcntl.fcntl(self.f, fcntl.F_SETFL, os.O_NONBLOCK)
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if sys.platform not in ['os2emx']:
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rv = fcntl.fcntl(self.f, fcntl.F_SETLKW, lockdata)
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self.f.close()
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def test_main():
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run_unittest(TestFcntl)
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if __name__ == '__main__':
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test_main()
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