124 lines
4.3 KiB
Python
124 lines
4.3 KiB
Python
# Copyright 2014 Modelling, Simulation and Design Lab (MSDL) at
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# McGill University and the University of Antwerp (http://msdl.cs.mcgill.ca/)
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from testutils import *
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from pypdevs.basesimulator import BaseSimulator
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class TestWait(unittest.TestCase):
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def setUp(self):
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self.sim = basicSim()
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def tearDown(self):
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self.sim.run_gvt = False
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def checkWait(self, finish):
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self.checkWaitStart()
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self.checkWaitStop(finish)
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def checkWaitStart(self):
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# A thread, otherwise the state of the lock cannot be checked
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# Though this is somewhat more difficult to terminate...
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self.proc = threading.Thread(target=BaseSimulator.waitUntilOK,
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args=[self.sim, 0])
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self.proc.start()
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def checkWaitStop(self, finish=True):
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# Give it not too much time to finish
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self.proc.join(0.1)
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# Still running, but shouldn't finish --> OK
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if self.proc.is_alive() and not finish:
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return
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# Still running, but should finish --> NOK
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elif self.proc.is_alive() and finish: #pragma: nocover
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# Force thread shutdown
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self.sim.V[0] = float('inf')
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self.sim.Vchange.set()
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self.fail("Thread should finish, but was not finished")
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# No longer running, and should finish --> OK
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elif not self.proc.is_alive() and finish:
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return
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# No longer running, but should not finish --> NOK
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elif not self.proc.is_alive() and not finish: #pragma: nocover
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self.fail("Thread should keep running, but has finished")
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def test_GVT_wait(self):
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# Run a seperate thread for the waiting,
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# after each modification, we just check wheter it is still live
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self.sim.Vlock.acquire()
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self.sim.V = [{0: 0}, {}]
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self.sim.control_msg = [0, 0, {0: 0}]
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self.checkWait(finish=True)
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self.sim.V = [{0: -3}, {}]
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self.sim.control_msg = [0, 0, {0: 0}]
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self.checkWait(finish=True)
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self.sim.V = [{0: -3}, {}]
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self.sim.control_msg = [0, 0, {0: -4}]
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self.checkWait(finish=True)
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self.sim.V = [{0: 0}, {}]
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self.sim.control_msg = [0, 0, {0: -5}]
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self.checkWait(finish=True)
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self.sim.V = [{0: 3}, {}]
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self.sim.control_msg = [0, 0, {0: -3}]
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self.checkWait(finish=True)
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self.sim.V = [{0: -3}, {}]
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self.sim.control_msg = [0, 0, {0: 3}]
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self.checkWait(finish=True)
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self.sim.V = [{0: 1}, {}]
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self.sim.control_msg = [0, 0, {0: 0}]
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self.checkWait(finish=False)
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self.sim.notifyReceive(False)
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self.checkWaitStop(finish=True)
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self.sim.V = [{0: 0}, {}]
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self.sim.control_msg = [0, 0, {0: 1}]
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self.checkWait(finish=False)
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self.sim.notifyReceive(False)
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self.checkWaitStop(finish=True)
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self.sim.V = [{0: 3}, {}]
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self.sim.control_msg = [0, 0, {0: -2}]
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self.checkWait(finish=False)
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self.sim.notifyReceive(False)
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self.checkWaitStop(finish=True)
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# Should stop at exactly the correct time
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self.sim.V = [{0: -3}, {}]
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self.sim.control_msg = [0, 0, {0: 6}]
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self.checkWait(finish=False)
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self.sim.notifyReceive(False)
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self.checkWaitStop(finish=False)
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self.sim.notifyReceive(False)
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self.checkWaitStop(finish=False)
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self.sim.notifyReceive(False)
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self.checkWaitStop(finish=True)
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# Do multiple receives at once
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self.sim.V = [{0: -3}, {}]
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self.sim.control_msg = [0, 0, {0: 6}]
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self.checkWait(finish=False)
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self.sim.notifyReceive(False)
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self.sim.notifyReceive(False)
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self.sim.notifyReceive(False)
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self.checkWaitStop(finish=True)
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