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mitogen/tests/responder_test.py

213 lines
7.3 KiB
Python

7 years ago
import mock
import textwrap
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import subprocess
import sys
import unittest
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import mitogen.master
import testlib
import plain_old_module
import simple_pkg.a
class NeutralizeMainTest(testlib.RouterMixin, testlib.TestCase):
klass = mitogen.master.ModuleResponder
def call(self, *args, **kwargs):
router = mock.Mock()
return self.klass(router).neutralize_main(*args, **kwargs)
def test_missing_exec_guard(self):
path = testlib.data_path('main_with_no_exec_guard.py')
args = [sys.executable, path]
proc = subprocess.Popen(args, stderr=subprocess.PIPE)
_, stderr = proc.communicate()
self.assertEqual(1, proc.returncode)
expect = self.klass.main_guard_msg % (path,)
self.assertTrue(expect in stderr.decode())
HAS_MITOGEN_MAIN = mitogen.core.b(
textwrap.dedent("""
herp derp
def myprog():
pass
@mitogen.main(maybe_some_option=True)
def main(router):
pass
""")
)
def test_mitogen_main(self):
untouched = self.call("derp.py", self.HAS_MITOGEN_MAIN)
self.assertEqual(untouched, self.HAS_MITOGEN_MAIN)
HAS_EXEC_GUARD = mitogen.core.b(
textwrap.dedent("""
herp derp
def myprog():
pass
def main():
pass
if __name__ == '__main__':
main()
""")
)
def test_exec_guard(self):
touched = self.call("derp.py", self.HAS_EXEC_GUARD)
bits = touched.decode().split()
self.assertEqual(bits[-3:], ['def', 'main():', 'pass'])
class GoodModulesTest(testlib.RouterMixin, testlib.TestCase):
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def test_plain_old_module(self):
# The simplest case: a top-level module with no interesting imports or
# package machinery damage.
context = self.router.local()
self.assertEqual(256, context.call(plain_old_module.pow, 2, 8))
os_fork = int(sys.version_info < (2, 6)) # mitogen.os_fork
self.assertEqual(1+os_fork, self.router.responder.get_module_count)
self.assertEqual(1+os_fork, self.router.responder.good_load_module_count)
self.assertLess(300, self.router.responder.good_load_module_size)
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def test_simple_pkg(self):
# Ensure success of a simple package containing two submodules, one of
# which imports the other.
context = self.router.local()
self.assertEqual(3,
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context.call(simple_pkg.a.subtract_one_add_two, 2))
os_fork = int(sys.version_info < (2, 6)) # mitogen.os_fork
self.assertEqual(2+os_fork, self.router.responder.get_module_count)
self.assertEqual(3+os_fork, self.router.responder.good_load_module_count)
self.assertEqual(0, self.router.responder.bad_load_module_count)
self.assertLess(450, self.router.responder.good_load_module_size)
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def test_self_contained_program(self):
# Ensure a program composed of a single script can be imported
# successfully.
args = [sys.executable, testlib.data_path('self_contained_program.py')]
output = testlib.subprocess__check_output(args).decode()
self.assertEqual(output, "['__main__', 50]\n")
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class BrokenModulesTest(testlib.TestCase):
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def test_obviously_missing(self):
# Ensure we don't crash in the case of a module legitimately being
# unavailable. Should never happen in the real world.
stream = mock.Mock()
Refactor Stream, introduce quasi-asynchronous connect, much more Split Stream into many, many classes * mitogen.parent.Connection: Handles connection setup logic only. * Maintain references to stdout and stderr streams. * Manages TimerList timer to cancel connection attempt after deadline * Blocking setup code replaced by async equivalents running on the broker * mitogen.parent.Options: Tracks connection-specific options. This keeps the connection class small, but more importantly, it is generic to the future desire to build and execute command lines without starting a full connection. * mitogen.core.Protocol: Handles program behaviour relating to events on a stream. Protocol performs no IO of its own, instead deferring it to Stream and Side. This makes testing much easier, and means libssh can reimplement Stream and Side to reuse MitogenProtocol * mitogen.core.MitogenProtocol: Guts of the old Mitogen stream implementtion * mitogen.core.BufferedWriter: Guts of the old Mitogen buffered transmit implementation, made generic * mitogen.core.DelineatedProtocol: Guts of the old IoLogger, knows how to split up input and pass it on to a on_line_received()/on_partial_line_received() callback. * mitogen.parent.BootstrapProtocol: Asynchronous equivalent of the old blocking connect code. Waits for various prompts (MITO001 etc) and writes the bootstrap using a BufferedWriter. On success, switches the stream to MitogenProtocol. * mitogen.core.Message: move encoding parts of MitogenProtocol out to Message (where it belongs) and write a bunch of new tests for pickling. * The bizarre Stream.construct() is gone now, Option.__init__ is its own constructor. Should fix many LGTM errors. * Update all connection methods: Every connection method is updated to use async logic, defining protocols as required to handle interactive prompts like in SSH or su. Add new real integration tests for at least doas and su. * Eliminate manual fd management: File descriptors are trapped in file objects at their point of origin, and Side is updated to use file objects rather than raw descriptors. This eliminates a whole class of bugs where unrelated FDs could be closed by the wrong component. Now an FD's open/closed status is fused to it everywhere in the library. * Halve file descriptor usage: now FD open/close state is tracked by its file object, we don't need to duplicate FDs everywhere so that receive/transmit side can be closed independently. Instead both sides back on to the same file object. Closes #26, Closes #470. * Remove most uses of dup/dup2: Closes #256. File descriptors are trapped in a common file object and shared among classes. The remaining few uses for dup/dup2 are as close to minimal as possible. * Introduce mitogen.parent.Process: uniform interface for subprocesses created either via mitogen.fork or the subprocess module. Remove all the crap where we steal a pid from subprocess guts. Now we use subprocess to manage its processes as it should be. Closes #169 by using the new Timers facility to poll for a slow-to-exit subprocess. * Fix su password race: Closes #363. DelineatedProtocol naturally retries partially received lines, preventing the cause of the original race. * Delete old blocking IO utility functions iter_read()/write_all()/discard_until(). Closes #26 Closes #147 Closes #169 Closes #256 Closes #363 Closes #419 Closes #470
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stream.protocol.sent_modules = set()
router = mock.Mock()
router.stream_by_id = lambda n: stream
msg = mitogen.core.Message(
data=mitogen.core.b('non_existent_module'),
reply_to=50,
)
msg.router = router
responder = mitogen.master.ModuleResponder(router)
responder._on_get_module(msg)
self.assertEqual(1, len(router._async_route.mock_calls))
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self.assertEqual(1, responder.get_module_count)
self.assertEqual(0, responder.good_load_module_count)
self.assertEqual(0, responder.good_load_module_size)
self.assertEqual(1, responder.bad_load_module_count)
call = router._async_route.mock_calls[0]
msg, = call[1]
self.assertEqual(mitogen.core.LOAD_MODULE, msg.handle)
self.assertEqual(('non_existent_module', None, None, None, ()),
msg.unpickle())
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@unittest.skipIf(
condition=sys.version_info < (2, 6),
reason='Ancient Python lacked "from . import foo"',
)
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def test_ansible_six_messed_up_path(self):
# The copy of six.py shipped with Ansible appears in a package whose
# __path__ subsequently ends up empty, which prevents pkgutil from
# finding its submodules. After ansible.compat.six is initialized in
# the parent, attempts to execute six/__init__.py on the slave will
# cause an attempt to request ansible.compat.six._six from the master.
import six_brokenpkg
stream = mock.Mock()
Refactor Stream, introduce quasi-asynchronous connect, much more Split Stream into many, many classes * mitogen.parent.Connection: Handles connection setup logic only. * Maintain references to stdout and stderr streams. * Manages TimerList timer to cancel connection attempt after deadline * Blocking setup code replaced by async equivalents running on the broker * mitogen.parent.Options: Tracks connection-specific options. This keeps the connection class small, but more importantly, it is generic to the future desire to build and execute command lines without starting a full connection. * mitogen.core.Protocol: Handles program behaviour relating to events on a stream. Protocol performs no IO of its own, instead deferring it to Stream and Side. This makes testing much easier, and means libssh can reimplement Stream and Side to reuse MitogenProtocol * mitogen.core.MitogenProtocol: Guts of the old Mitogen stream implementtion * mitogen.core.BufferedWriter: Guts of the old Mitogen buffered transmit implementation, made generic * mitogen.core.DelineatedProtocol: Guts of the old IoLogger, knows how to split up input and pass it on to a on_line_received()/on_partial_line_received() callback. * mitogen.parent.BootstrapProtocol: Asynchronous equivalent of the old blocking connect code. Waits for various prompts (MITO001 etc) and writes the bootstrap using a BufferedWriter. On success, switches the stream to MitogenProtocol. * mitogen.core.Message: move encoding parts of MitogenProtocol out to Message (where it belongs) and write a bunch of new tests for pickling. * The bizarre Stream.construct() is gone now, Option.__init__ is its own constructor. Should fix many LGTM errors. * Update all connection methods: Every connection method is updated to use async logic, defining protocols as required to handle interactive prompts like in SSH or su. Add new real integration tests for at least doas and su. * Eliminate manual fd management: File descriptors are trapped in file objects at their point of origin, and Side is updated to use file objects rather than raw descriptors. This eliminates a whole class of bugs where unrelated FDs could be closed by the wrong component. Now an FD's open/closed status is fused to it everywhere in the library. * Halve file descriptor usage: now FD open/close state is tracked by its file object, we don't need to duplicate FDs everywhere so that receive/transmit side can be closed independently. Instead both sides back on to the same file object. Closes #26, Closes #470. * Remove most uses of dup/dup2: Closes #256. File descriptors are trapped in a common file object and shared among classes. The remaining few uses for dup/dup2 are as close to minimal as possible. * Introduce mitogen.parent.Process: uniform interface for subprocesses created either via mitogen.fork or the subprocess module. Remove all the crap where we steal a pid from subprocess guts. Now we use subprocess to manage its processes as it should be. Closes #169 by using the new Timers facility to poll for a slow-to-exit subprocess. * Fix su password race: Closes #363. DelineatedProtocol naturally retries partially received lines, preventing the cause of the original race. * Delete old blocking IO utility functions iter_read()/write_all()/discard_until(). Closes #26 Closes #147 Closes #169 Closes #256 Closes #363 Closes #419 Closes #470
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stream.protocol.sent_modules = set()
router = mock.Mock()
router.stream_by_id = lambda n: stream
msg = mitogen.core.Message(
data=mitogen.core.b('six_brokenpkg._six'),
reply_to=50,
)
msg.router = router
responder = mitogen.master.ModuleResponder(router)
responder._on_get_module(msg)
self.assertEqual(1, len(router._async_route.mock_calls))
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self.assertEqual(1, responder.get_module_count)
self.assertEqual(1, responder.good_load_module_count)
self.assertEqual(0, responder.bad_load_module_count)
call = router._async_route.mock_calls[0]
msg, = call[1]
self.assertEqual(mitogen.core.LOAD_MODULE, msg.handle)
tup = msg.unpickle()
self.assertIsInstance(tup, tuple)
class ForwardTest(testlib.RouterMixin, testlib.TestCase):
def test_forward_to_nonexistent_context(self):
nonexistent = mitogen.core.Context(self.router, 123)
capture = testlib.LogCapturer()
capture.start()
self.broker.defer_sync(lambda:
self.router.responder.forward_modules(
nonexistent,
['mitogen.core']
)
)
s = capture.stop()
self.assertTrue('dropping forward of' in s)
def test_stats(self):
# Forwarding stats broken because forwarding is broken. See #469.
c1 = self.router.local()
c2 = self.router.local(via=c1)
os_fork = int(sys.version_info < (2, 6))
self.assertEqual(256, c2.call(plain_old_module.pow, 2, 8))
self.assertEqual(2+os_fork, self.router.responder.get_module_count)
self.assertEqual(2+os_fork, self.router.responder.good_load_module_count)
self.assertLess(10000, self.router.responder.good_load_module_size)
self.assertGreater(40000, self.router.responder.good_load_module_size)
class BlacklistTest(testlib.TestCase):
@unittest.skip('implement me')
def test_whitelist_no_blacklist(self):
assert 0
@unittest.skip('implement me')
def test_whitelist_has_blacklist(self):
assert 0
@unittest.skip('implement me')
def test_blacklist_no_whitelist(self):
assert 0
@unittest.skip('implement me')
def test_blacklist_has_whitelist(self):
assert 0