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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2018 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ###########################################################################*/
"""Test of async module."""
__authors__ = ["T. Vincent"]
__license__ = "MIT"
__date__ = "09/03/2018"
import threading
import unittest
from silx.third_party.concurrent_futures import wait
from silx.gui import qt
from silx.gui.utils.testutils import TestCaseQt
from silx.gui.utils import concurrent
class TestSubmitToQtThread(TestCaseQt):
"""Test submission of tasks to Qt main thread"""
def setUp(self):
# Reset executor to test lazy-loading in different conditions
concurrent._executor = None
super(TestSubmitToQtThread, self).setUp()
def _task(self, value1, value2):
return value1, value2
def _taskWithException(self, *args, **kwargs):
raise RuntimeError('task exception')
def testFromMainThread(self):
"""Call submitToQtMainThread from the main thread"""
value1, value2 = 0, 1
future = concurrent.submitToQtMainThread(self._task, value1, value2=value2)
self.assertTrue(future.done())
self.assertEqual(future.result(1), (value1, value2))
self.assertIsNone(future.exception(1))
future = concurrent.submitToQtMainThread(self._taskWithException)
self.assertTrue(future.done())
with self.assertRaises(RuntimeError):
future.result(1)
self.assertIsInstance(future.exception(1), RuntimeError)
def _threadedTest(self):
"""Function run in a thread for the tests"""
value1, value2 = 0, 1
future = concurrent.submitToQtMainThread(self._task, value1, value2=value2)
wait([future], 3)
self.assertTrue(future.done())
self.assertEqual(future.result(1), (value1, value2))
self.assertIsNone(future.exception(1))
future = concurrent.submitToQtMainThread(self._taskWithException)
wait([future], 3)
self.assertTrue(future.done())
with self.assertRaises(RuntimeError):
future.result(1)
self.assertIsInstance(future.exception(1), RuntimeError)
def testFromPythonThread(self):
"""Call submitToQtMainThread from a Python thread"""
thread = threading.Thread(target=self._threadedTest)
thread.start()
for i in range(100): # Loop over for 10 seconds
self.qapp.processEvents()
thread.join(0.1)
if not thread.is_alive():
break
else:
self.fail(('Thread task still running'))
def testFromQtThread(self):
"""Call submitToQtMainThread from a Qt thread pool"""
class Runner(qt.QRunnable):
def __init__(self, fn):
super(Runner, self).__init__()
self._fn = fn
def run(self):
self._fn()
def autoDelete(self):
return True
threadPool = qt.silxGlobalThreadPool()
runner = Runner(self._threadedTest)
threadPool.start(runner)
for i in range(100): # Loop over for 10 seconds
self.qapp.processEvents()
done = threadPool.waitForDone(100)
if done:
break
else:
self.fail('Thread pool task still running')
def suite():
test_suite = unittest.TestSuite()
test_suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(
TestSubmitToQtThread))
return test_suite
if __name__ == '__main__':
unittest.main(defaultTest='suite')
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