mirror of https://github.com/python/cpython
70 lines
1.6 KiB
Python
70 lines
1.6 KiB
Python
# Testing select module
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from test_support import verbose
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import select
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import os
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# test some known error conditions
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try:
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rfd, wfd, xfd = select.select(1, 2, 3)
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except TypeError:
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pass
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else:
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print 'expected TypeError exception not raised'
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class Nope:
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pass
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class Almost:
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def fileno(self):
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return 'fileno'
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try:
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rfd, wfd, xfd = select.select([Nope()], [], [])
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except TypeError:
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pass
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else:
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print 'expected TypeError exception not raised'
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try:
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rfd, wfd, xfd = select.select([Almost()], [], [])
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except TypeError:
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pass
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else:
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print 'expected TypeError exception not raised'
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try:
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rfd, wfd, xfd = select.select([], [], [], 'not a number')
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except TypeError:
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pass
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else:
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print 'expected TypeError exception not raised'
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def test():
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import sys
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if sys.platform[:3] in ('win', 'mac', 'os2'):
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if verbose:
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print "Can't test select easily on", sys.platform
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return
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cmd = 'for i in 0 1 2 3 4 5 6 7 8 9; do echo testing...; sleep 1; done'
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p = os.popen(cmd, 'r')
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for tout in (0, 1, 2, 4, 8, 16) + (None,)*10:
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if verbose:
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print 'timeout =', tout
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rfd, wfd, xfd = select.select([p], [], [], tout)
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if (rfd, wfd, xfd) == ([], [], []):
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continue
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if (rfd, wfd, xfd) == ([p], [], []):
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line = p.readline()
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if verbose:
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print `line`
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if not line:
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if verbose:
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print 'EOF'
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break
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continue
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print 'Unexpected return values from select():', rfd, wfd, xfd
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p.close()
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test()
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