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"""Misc subprocess tests"""
import unittest
import os
import sys
import signal
import time
import errno
from test import test_support
from subprocess import PIPE, Popen, _cmdline2list
class TerminationAndSignalTest(unittest.TestCase):
def setUp(self):
program = '''
import signal, sys
def print_signal(signum, frame):
print signum
def exit_signal(signum, frame):
sys.exit(signum)
signal.signal(signal.SIGTERM, print_signal)
signal.signal(signal.SIGINT, exit_signal)
print 'Started'
sys.stdout.flush()
while True:
pass
'''
self.proc = Popen(['python', '-c', program], stdout=PIPE, stderr=PIPE)
assert self.proc.stdout.readline().strip() == 'Started'
def tearDown(self):
if self.proc.poll() is None:
self.proc.kill()
def test_kill(self):
self.proc.kill()
self.assertNotEqual(self.proc.wait(), 0)
if os._name != 'nt':
def test_terminate_can_be_ignored_on_posix(self):
self.proc.terminate()
self.assertIsNone(self.proc.poll())
def test_send_signals_on_posix(self):
self.proc.send_signal(signal.SIGTERM)
time.sleep(0.01) # Make sure SIGTERM is handled first
self.proc.send_signal(signal.SIGINT)
self.assertEqual(self.proc.wait(), 2)
self.assertEqual(self.proc.stdout.read(), '15\n')
else:
def test_terminate_cannot_be_ignored_on_windows(self):
self.proc.terminate()
self.assertNotEqual(self.proc.wait(), 0)
def test_sending_sigterm_signal_terminates_on_windows(self):
self.proc.send_signal(signal.SIGTERM)
self.assertNotEqual(self.proc.wait(), 0)
class PidTest(unittest.TestCase):
def testPid(self):
# Cannot use sys.executable here because it's a script and has different
# pid than the actual started Java process.
p = Popen(['python', '-c', 'import os; print os.getpid()'],
stdout=PIPE)
p.wait()
self.assertEquals(int(p.stdout.read()), p.pid)
def testNonExistingField(self):
# Test we don't crash if Process class doesn't have field we need.
p = Popen(['echo foo'], shell=True, stdout=PIPE)
self.assertIsNone(p._get_pid('nonex'))
class EnvironmentInheritanceTest(unittest.TestCase):
def testDefaultEnvIsInherited(self):
# Test for issue #1104
os.environ['foo'] = 'something'
p1 = Popen([sys.executable, "-c",
'import os, sys; sys.stdout.write(os.environ["foo"])'],
stdout=PIPE)
self.assertEquals('something', p1.stdout.read())
class JythonOptsTest(unittest.TestCase):
""" Tests for (some parts of) issue #1187: JYTHON_OPTS should not be
enriched by arguments
"""
def testNoJythonOpts(self):
os.environ['JYTHON_OPTS'] = ''
p1 = Popen([sys.executable, "-c",
'import os, sys; sys.stdout.write(os.environ["JYTHON_OPTS"])'],
stdout=PIPE)
self.assertEquals('', p1.stdout.read())
def testExistingJythonOpts(self):
options = '-Qold -Qwarn'
os.environ['JYTHON_OPTS'] = options
p1 = Popen([sys.executable, "-c",
'import os, sys; sys.stdout.write(os.environ["JYTHON_OPTS"])'],
stdout=PIPE)
self.assertEquals(options, p1.stdout.read())
class Cmdline2ListTestCase(unittest.TestCase):
cmdlines = {
# From "Parsing C Command-Line Arguments"
# http://msdn.microsoft.com/en-us/library/a1y7w461(VS.80).aspx
'"a b c" d e': ['a b c', 'd', 'e'],
r'"ab\"c" "\\" d': ['ab"c', '\\', 'd'],
r'a\\\b d"e f"g h': [r'a\\\b', 'de fg', 'h'],
r'a\\\"b c d': [r'a\"b', 'c', 'd'],
r'a\\\\"b c" d e': [r'a\\b c', 'd', 'e'],
r'C:\\foo\bar\baz jy thon': [r'C:\\foo\bar\baz', 'jy', 'thon'],
r'C:\\Program Files\Foo\Bar qu \\ ux':
[r'C:\\Program', 'Files\Foo\Bar', 'qu', '\\\\', 'ux'],
r'"C:\\Program Files\Foo\Bar" qu \\ ux':
[r'C:\\Program Files\Foo\Bar', 'qu', '\\\\', 'ux'],
r'dir "C:\\Program Files\Foo\\" bar':
['dir', 'C:\\\\Program Files\\Foo\\', 'bar'],
r'echo "\"I hate Windows!\""': ['echo', '"I hate Windows!"'],
r'print "jython" "': ['print', 'jython', ''],
r'print \"jython\" \"': ['print', '"jython"', '"'],
r'print \"jython\" \\"': ['print', '"jython"', '\\']
}
def test_cmdline2list(self):
for cmdline, argv in self.cmdlines.iteritems():
self.assertEqual(_cmdline2list(cmdline), argv)
class ExceptionsTestCase(unittest.TestCase):
def test_oserror_raised_with_errno_no_such_file_or_directory(self):
try:
Popen('a-file-that-should-never-exist-subprocess-test')
except OSError as err:
self.assertEquals(err.errno, errno.ENOENT)
def test_main():
test_support.run_unittest(
TerminationAndSignalTest,
PidTest,
EnvironmentInheritanceTest,
JythonOptsTest,
Cmdline2ListTestCase,
ExceptionsTestCase,
)
if __name__ == '__main__':
test_main()
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