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143 lines
4.0 KiB
Python
143 lines
4.0 KiB
Python
import os
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import random
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import sys
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import unittest
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try:
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import _ssl
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except ImportError:
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_ssl = None
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try:
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import ssl
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except ImportError:
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ssl = None
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try:
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import ctypes
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except ImportError:
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# Python 2.4
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ctypes = None
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import mitogen
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import testlib
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import plain_old_module
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def _find_ssl_linux():
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s = testlib.subprocess__check_output(['ldd', _ssl.__file__])
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for line in s.decode().splitlines():
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bits = line.split()
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if bits[0].startswith('libssl'):
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return bits[2]
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def _find_ssl_darwin():
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s = testlib.subprocess__check_output(['otool', '-l', _ssl.__file__])
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for line in s.decode().splitlines():
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bits = line.split()
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if bits[0] == 'name' and 'libssl' in bits[1]:
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return bits[1]
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if ctypes and sys.platform.startswith('linux'):
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LIBSSL_PATH = _find_ssl_linux()
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elif ctypes and sys.platform == 'darwin':
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LIBSSL_PATH = _find_ssl_darwin()
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else:
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LIBSSL_PATH = None
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if ctypes and LIBSSL_PATH:
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c_ssl = ctypes.CDLL(LIBSSL_PATH)
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c_ssl.RAND_pseudo_bytes.argtypes = [ctypes.c_char_p, ctypes.c_int]
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c_ssl.RAND_pseudo_bytes.restype = ctypes.c_int
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def ping():
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return 123
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def random_random():
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return random.random()
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def RAND_pseudo_bytes(n=32):
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buf = ctypes.create_string_buffer(n)
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assert 1 == c_ssl.RAND_pseudo_bytes(buf, n)
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return buf[:]
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def exercise_importer(n):
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"""
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Ensure the forked child has a sensible importer.
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"""
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sys.path.remove(testlib.DATA_DIR)
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import simple_pkg.a
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return simple_pkg.a.subtract_one_add_two(n)
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skipIfUnsupported = unittest.skipIf(
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condition=(not mitogen.fork.FORK_SUPPORTED),
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reason="mitogen.fork unsupported on this platform"
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)
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class ForkTest(testlib.RouterMixin, testlib.TestCase):
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def test_okay(self):
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context = self.router.fork()
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self.assertNotEqual(context.call(os.getpid), os.getpid())
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self.assertEqual(context.call(os.getppid), os.getpid())
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def test_random_module_diverges(self):
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context = self.router.fork()
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self.assertNotEqual(context.call(random_random), random_random())
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@unittest.skipIf(
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condition=LIBSSL_PATH is None or ctypes is None,
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reason='cant test libssl on this platform',
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)
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def test_ssl_module_diverges(self):
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# Ensure generator state is initialized.
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RAND_pseudo_bytes()
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context = self.router.fork()
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self.assertNotEqual(context.call(RAND_pseudo_bytes),
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RAND_pseudo_bytes())
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def test_importer(self):
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context = self.router.fork()
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self.assertEqual(2, context.call(exercise_importer, 1))
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def test_on_start(self):
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recv = mitogen.core.Receiver(self.router)
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def on_start(econtext):
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sender = mitogen.core.Sender(econtext.parent, recv.handle)
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sender.send(123)
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context = self.router.fork(on_start=on_start)
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self.assertEqual(123, recv.get().unpickle())
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ForkTest = skipIfUnsupported(ForkTest)
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class DoubleChildTest(testlib.RouterMixin, testlib.TestCase):
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def test_okay(self):
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# When forking from the master process, Mitogen had nothing to do with
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# setting up stdio -- that was inherited wherever the Master is running
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# (supervisor, iTerm, etc). When forking from a Mitogen child context
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# however, Mitogen owns all of fd 0, 1, and 2, and during the fork
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# procedure, it deletes all of these descriptors. That leaves the
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# process in a weird state that must be handled by some combination of
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# fork.py and ExternalContext.main().
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# Below we simply test whether ExternalContext.main() managed to boot
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# successfully. In future, we need lots more tests.
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c1 = self.router.fork()
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c2 = self.router.fork(via=c1)
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self.assertEqual(123, c2.call(ping))
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def test_importer(self):
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c1 = self.router.fork(name='c1')
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c2 = self.router.fork(name='c2', via=c1)
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self.assertEqual(2, c2.call(exercise_importer, 1))
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DoubleChildTest = skipIfUnsupported(DoubleChildTest)
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