def test_max_delay():
'''Test that changing delays after compression works. '''
reinit_default_clock()
inp = SpikeGeneratorGroup(1, [(0, 1*ms)])
G = NeuronGroup(1, model='v:1')
mon = StateMonitor(G, 'v', record=True)
# one synapse
syn = Synapses(inp, G, model='w:1', pre='v+=w', max_delay=5*ms)
syn[:, :] = 1
syn.w[:, :] = 1
syn.delay[:, :] = 0 * ms
net = Network(inp, G, syn, mon)
net.run(defaultclock.dt)
syn.delay[:, :] = 5 * ms
net.run(6.5*ms)
# spike should arrive at 5 + 1 ms
assert (mon[0][mon.times >= 6 * ms] == 1).all()
assert (mon[0][mon.times < 6 * ms] == 0).all()
# same as above but with two synapses
reinit_default_clock()
mon.reinit()
G.reinit()
syn = Synapses(inp, G, model='w:1', pre='v+=w', max_delay=5*ms)
syn[:, :] = 2
syn.w[:, :] = 1
syn.delay[:, :] = [0 * ms, 0 * ms]
net = Network(inp, G, syn, mon)
net.run(defaultclock.dt)
syn.delay[:, :] = [5 * ms, 5 * ms]
net.run(6.5*ms)
# spike should arrive at 5 + 1 ms
assert (mon[0][mon.times >= 6 * ms] == 2).all()
assert (mon[0][mon.times < 6 * ms] == 0).all()
def test_max_delay():
'''Test that changing delays after compression works. '''
reinit_default_clock()
inp = SpikeGeneratorGroup(1, [(0, 1 * ms)])
G = NeuronGroup(1, model='v:1')
mon = StateMonitor(G, 'v', record=True)
# one synapse
syn = Synapses(inp, G, model='w:1', pre='v+=w', max_delay=5 * ms)
syn[:, :] = 1
syn.w[:, :] = 1
syn.delay[:, :] = 0 * ms
net = Network(inp, G, syn, mon)
net.run(defaultclock.dt)
syn.delay[:, :] = 5 * ms
net.run(6.5 * ms)
# spike should arrive at 5 + 1 ms
assert (mon[0][mon.times >= 6 * ms] == 1).all()
assert (mon[0][mon.times < 6 * ms] == 0).all()
# same as above but with two synapses
reinit_default_clock()
mon.reinit()
G.reinit()
syn = Synapses(inp, G, model='w:1', pre='v+=w', max_delay=5 * ms)
syn[:, :] = 2
syn.w[:, :] = 1
syn.delay[:, :] = [0 * ms, 0 * ms]
net = Network(inp, G, syn, mon)
net.run(defaultclock.dt)
syn.delay[:, :] = [5 * ms, 5 * ms]
net.run(6.5 * ms)
# spike should arrive at 5 + 1 ms
assert (mon[0][mon.times >= 6 * ms] == 2).all()
assert (mon[0][mon.times < 6 * ms] == 0).all()
