import numpy as np
from numpy.testing import assert_raises

from cnmodel.util import stim
from neuron import h

h.dt = 0.025


def test_make_pulse():
    params = dict(delay=10, Sfreq=50, dur=1, amp=15, PT=0, NP=5)

    assert_raises(Exception, lambda: stim.make_pulse(params))
    params["dt"] = 0.025

    w, maxt, times = stim.make_pulse(params)

    assert w.min() == 0.0
    assert w.max() == 15
    assert w.dtype == np.float64

    triggers = np.argwhere(np.diff(w) > 0)[:, 0] + 1
    assert np.all(triggers == times)
    assert w.sum() == 15 * len(times) * int(1 / h.dt)

    params["PT"] = 100
    w, maxt, times = stim.make_pulse(params)
    triggers = np.argwhere(np.diff(w) > 0)[:, 0] + 1
    assert triggers[-1] - triggers[-2] == 100 / h.dt