def pytest_funcarg__sim(request):
if request.param == 'default':
return Simulation.Simulation()
elif request.param == 'step':
return SimulationStep.SimulationStep()
elif request.param == 'trace':
return SimulationTrace.SimulationTrace()
elif request.param == 'rt':
return SimulationRT.SimulationRT()
elif request.param.startswith('global'):
if request.param.endswith('default'):
Globals.sim = Simulation.Simulation()
elif request.param.endswith('step'):
Globals.sim = SimulationStep.SimulationStep()
elif request.param.endswith('trace'):
Globals.sim = SimulationTrace.SimulationTrace()
elif request.param.endswith('rt'):
Globals.sim = SimulationRT.SimulationRT()
return Globals.sim
def test_ticker():
"""Tests SimulationRT for degree to which simulation time and wallclock
time can be synchronized."""
rel_speed = 10
sim_slow = SimulationRT()
t = Ticker(sim=sim_slow)
sim_slow.activate(t, t.tick())
sim_slow.simulate(until=10, real_time=True, rel_speed=rel_speed)
for tSim, tRT in t.timing:
assert tSim / tRT > rel_speed - 1
rel_speed = 20
sim_fast = SimulationRT()
sim_fast.initialize()
t = Ticker(sim=sim_fast)
sim_fast.activate(t, t.tick())
sim_fast.simulate(until=10, real_time=True, rel_speed=rel_speed)
for tSim, tRT in t.timing:
assert tSim / tRT > rel_speed - 1