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mitogen/tests/call_function_test.py

123 lines
3.5 KiB
Python

import logging
import time
import unittest2
import mitogen.core
import mitogen.master
import testlib
import plain_old_module
class CrazyType(object):
pass
def function_that_adds_numbers(x, y):
return x + y
def function_that_fails():
raise plain_old_module.MyError('exception text')
def func_with_bad_return_value():
return CrazyType()
def func_accepts_returns_context(context):
return context
def func_accepts_returns_sender(sender):
sender.send(123)
sender.close()
return sender
class TargetClass:
offset = 100
@classmethod
def add_numbers_with_offset(cls, x, y):
return cls.offset + x + y
class CallFunctionTest(testlib.RouterMixin, testlib.TestCase):
def setUp(self):
super(CallFunctionTest, self).setUp()
self.local = self.router.fork()
def test_succeeds(self):
self.assertEqual(3, self.local.call(function_that_adds_numbers, 1, 2))
def test_succeeds_class_method(self):
self.assertEqual(
self.local.call(TargetClass.add_numbers_with_offset, 1, 2),
103,
)
def test_crashes(self):
exc = self.assertRaises(mitogen.core.CallError,
lambda: self.local.call(function_that_fails))
s = str(exc)
etype, _, s = s.partition(': ')
self.assertEqual(etype, 'plain_old_module.MyError')
msg, _, s = s.partition('\n')
self.assertEqual(msg, 'exception text')
# Traceback
self.assertGreater(len(s), 0)
def test_bad_return_value(self):
exc = self.assertRaises(mitogen.core.StreamError,
lambda: self.local.call(func_with_bad_return_value))
self.assertEquals(
exc.args[0],
"cannot unpickle '%s'/'CrazyType'" % (__name__,),
)
def test_aborted_on_local_context_disconnect(self):
stream = self.router._stream_by_id[self.local.context_id]
self.broker.stop_receive(stream)
recv = self.local.call_async(time.sleep, 120)
self.broker.defer(stream.on_disconnect, self.broker)
exc = self.assertRaises(mitogen.core.ChannelError,
lambda: recv.get())
self.assertEquals(exc.args[0], mitogen.core.ChannelError.local_msg)
def test_aborted_on_local_broker_shutdown(self):
stream = self.router._stream_by_id[self.local.context_id]
recv = self.local.call_async(time.sleep, 120)
time.sleep(0.05) # Ensure GIL is released
self.broker.shutdown()
exc = self.assertRaises(mitogen.core.ChannelError,
lambda: recv.get())
self.assertEquals(exc.args[0], mitogen.core.ChannelError.local_msg)
def test_accepts_returns_context(self):
context = self.local.call(func_accepts_returns_context, self.local)
self.assertIsNot(context, self.local)
self.assertEqual(context.context_id, self.local.context_id)
self.assertEqual(context.name, self.local.name)
def test_accepts_returns_sender(self):
recv = mitogen.core.Receiver(self.router)
sender = recv.to_sender()
sender2 = self.local.call(func_accepts_returns_sender, sender)
self.assertEquals(sender.context.context_id,
sender2.context.context_id)
self.assertEquals(sender.dst_handle, sender2.dst_handle)
self.assertEquals(123, recv.get().unpickle())
self.assertRaises(mitogen.core.ChannelError,
lambda: recv.get().unpickle())
if __name__ == '__main__':
unittest2.main()