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b15ac3169d
be called at the end of each test that spawns children (perhaps it should be called from regrtest instead?). This will hopefully prevent some of the unexplained failures in the buildbots (hppa and alpha) during tests that spawn children. The problems were not reproducible. There were many zombies that remained at the end of several tests. In the worst case, this shouldn't cause any more problems, though it may not help either. Time will tell.
78 lines
2.3 KiB
Python
78 lines
2.3 KiB
Python
#! /usr/bin/env python
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"""Test script for popen2.py
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Christian Tismer
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"""
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import os
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import sys
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from test.test_support import TestSkipped, reap_children
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# popen2 contains its own testing routine
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# which is especially useful to see if open files
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# like stdin can be read successfully by a forked
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# subprocess.
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def main():
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print "Test popen2 module:"
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if (sys.platform[:4] == 'beos' or sys.platform[:6] == 'atheos') \
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and __name__ != '__main__':
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# Locks get messed up or something. Generally we're supposed
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# to avoid mixing "posix" fork & exec with native threads, and
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# they may be right about that after all.
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raise TestSkipped, "popen2() doesn't work during import on " + sys.platform
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try:
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from os import popen
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except ImportError:
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# if we don't have os.popen, check that
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# we have os.fork. if not, skip the test
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# (by raising an ImportError)
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from os import fork
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import popen2
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popen2._test()
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def _test():
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# same test as popen2._test(), but using the os.popen*() API
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print "Testing os module:"
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import popen2
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# When the test runs, there shouldn't be any open pipes
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popen2._cleanup()
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assert not popen2._active, "Active pipes when test starts " + repr([c.cmd for c in popen2._active])
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cmd = "cat"
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teststr = "ab cd\n"
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if os.name == "nt":
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cmd = "more"
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# "more" doesn't act the same way across Windows flavors,
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# sometimes adding an extra newline at the start or the
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# end. So we strip whitespace off both ends for comparison.
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expected = teststr.strip()
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print "testing popen2..."
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w, r = os.popen2(cmd)
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w.write(teststr)
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w.close()
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got = r.read()
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if got.strip() != expected:
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raise ValueError("wrote %r read %r" % (teststr, got))
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print "testing popen3..."
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try:
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w, r, e = os.popen3([cmd])
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except:
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w, r, e = os.popen3(cmd)
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w.write(teststr)
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w.close()
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got = r.read()
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if got.strip() != expected:
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raise ValueError("wrote %r read %r" % (teststr, got))
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got = e.read()
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if got:
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raise ValueError("unexpected %r on stderr" % (got,))
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for inst in popen2._active[:]:
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inst.wait()
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popen2._cleanup()
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if popen2._active:
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raise ValueError("_active not empty")
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print "All OK"
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main()
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_test()
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reap_children()
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