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import time
import math
import unittest
import os
import sys
import gobject
from kiwi import tasklet
class C(gobject.GObject):
__gsignals__ = { 'my-signal': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
(gobject.TYPE_INT,)) }
def do_my_signal(self, arg):
self.arg = arg
class TestWaitForSignal(unittest.TestCase):
def testBadArguments(self):
self.assertRaises(TypeError, tasklet.WaitForSignal, '', '')
self.assertRaises(ValueError, tasklet.WaitForSignal, gobject.GObject(), 'foo')
def testGoodArguments(self):
tasklet.WaitForSignal(gobject.GObject(), 'notify')
def testSignal(self):
obj = C()
def some_task(obj):
yield tasklet.WaitForSignal(obj, 'my-signal')
tasklet.get_event()
raise StopIteration("return-val")
task = tasklet.run(some_task(obj))
obj.emit("my-signal", 1)
self.assertEqual(task.state, tasklet.Tasklet.STATE_ZOMBIE)
self.assertEqual(task.return_value, "return-val")
if hasattr(gobject, 'add_emission_hook'):
def testEmissionHook(self):
obj = C()
def some_task():
yield tasklet.WaitForSignal(C, 'my-signal')
tasklet.get_event()
raise StopIteration("return-val")
task = tasklet.run(some_task())
obj.emit("my-signal", 1)
self.assertEqual(task.state, tasklet.Tasklet.STATE_ZOMBIE)
self.assertEqual(task.return_value, "return-val")
class TestWaitForTimeout(unittest.TestCase):
def time(self):
if sys.platform == 'win32':
return time.clock()
else:
return time.time()
def testTimeout(self):
def some_task():
yield tasklet.WaitForTimeout(100)
tasklet.get_event()
raise StopIteration("return-val")
mainloop = gobject.MainLoop()
t1 = self.time()
task = tasklet.run(some_task())
task.add_join_callback(lambda task, retval: mainloop.quit())
mainloop.run()
t2 = self.time()
self.assertEqual(task.state, tasklet.Tasklet.STATE_ZOMBIE)
self.assertEqual(task.return_value, "return-val")
## check that elapsed time aproximately 100 ms second, give or take 50 ms
## (glib doesn't guarantee precise timing)
self.assert_(math.fabs((t2 - t1) - 0.1) < 0.05, "elapsed time was %f, expected 0.1" % ((t2 - t1),))
class TestMessages(unittest.TestCase):
def testPing(self):
def pinger(remote, value):
yield tasklet.Message('echo-request', dest=remote, value=value)
yield tasklet.WaitForMessages(accept='echo-reply')
msg = tasklet.get_event()
raise StopIteration(msg.value)
def echoer():
yield tasklet.WaitForMessages(accept='echo-request')
msg = tasklet.get_event()
assert isinstance(msg, tasklet.Message)
assert msg.sender is not None
yield tasklet.Message('echo-reply', dest=msg.sender, value=msg.value)
task = tasklet.run(pinger(tasklet.run(echoer()), 123))
self.assertEqual(task.state, tasklet.Tasklet.STATE_ZOMBIE)
self.assertEqual(task.return_value, 123)
class TestIO(unittest.TestCase):
def testPipe(self):
#
# Disable this test for win32, because it fails and warns:
#
# File "tests\test_tasklet.py", line 81, in pipe_reader
# assert chan.get_flags() & gobject.IO_FLAG_IS_READABLE
#
# ???:81: g_io_channel_get_flags: assertion `channel != NULL' failed
# ???:95: giowin32.c:1669: 4 is neither a file descriptor or a socket
# ???:96: g_io_channel_set_flags: assertion `channel != NULL' failed
#
if sys.platform == 'win32':
return
def pipe_reader(chan):
assert chan.get_flags() & gobject.IO_FLAG_IS_READABLE
yield tasklet.WaitForIO(chan, gobject.IO_IN)
tasklet.get_event()
c = chan.read(1)
raise StopIteration(c)
def pipe_writer(chan, c):
assert chan.get_flags() & gobject.IO_FLAG_IS_WRITEABLE
yield tasklet.WaitForIO(chan, gobject.IO_OUT)
tasklet.get_event()
chan.write(c)
read_fd, write_fd = os.pipe()
read_chan = gobject.IOChannel(read_fd)
read_chan.set_flags(gobject.IO_FLAG_NONBLOCK)
reader = tasklet.run(pipe_reader(read_chan))
write_chan = gobject.IOChannel(write_fd)
write_chan.set_flags(gobject.IO_FLAG_NONBLOCK)
write_chan.set_encoding(None)
write_chan.set_buffered(False)
writer = tasklet.run(pipe_writer(write_chan, chr(123)))
mainloop = gobject.MainLoop()
reader.add_join_callback(lambda task, retval: mainloop.quit())
mainloop.run()
self.assertEqual(reader.state, tasklet.Tasklet.STATE_ZOMBIE)
self.assertEqual(reader.return_value, chr(123))
class TestCallback(unittest.TestCase):
def testCallback(self):
def dispatch_callback(callback):
callback(123, 456, foo="bar")
return False
def register_callback(callback):
gobject.timeout_add(100, dispatch_callback, callback)
def task_func():
callback = tasklet.WaitForCall()
register_callback(callback)
yield callback
tasklet.get_event()
callback.return_value = False
mainloop.quit()
raise StopIteration((callback.args, callback.kwargs))
task = tasklet.run(task_func())
mainloop = gobject.MainLoop()
mainloop.run()
self.assertEqual(task.state, tasklet.Tasklet.STATE_ZOMBIE)
args, kwargs = task.return_value
self.assertEqual(args, (123, 456))
self.assertEqual(kwargs, dict(foo="bar"))
class TestWaitForTasklet(unittest.TestCase):
def testWaitForInstantaneousTask(self):
"""Test waiting for a tasklet that is already finished."""
def quick_task():
if 1:
raise StopIteration(123)
yield None
def task_waiter():
yield quick_task()
taskwait = tasklet.get_event()
raise StopIteration(taskwait.retval)
mainloop = gobject.MainLoop()
task = tasklet.run(task_waiter())
task.add_join_callback(lambda task, retval: mainloop.quit())
mainloop.run()
self.assertEqual(task.return_value, 123)
if __name__ == '__main__':
unittest.main()
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