def test_spect_edge_freq():
"""Test for :func:`compute_spect_edge_freq`.
For `data_sin` (signal x(t) = 0.1 * sin(5t) + 0.05 * sin(33t), on
[0, 2 * pi], at sfreq = 512Hz), the minimum frequency at which more than
50% (resp. 80%) of the spectral power up to ref_freq = 15Hz
(resp. ref_freq = 50Hz) is contained in the signal is 5Hz (resp. 33HZ).
"""
expected = 5.
assert_almost_equal(compute_spect_edge_freq(sfreq, data_sin, ref_freq=15,
edge=[50]), expected)
expected = 33.
assert_almost_equal(compute_spect_edge_freq(sfreq, data_sin, ref_freq=50,
edge=[80]), expected)
def test_shape_output_spect_edge_freq():
edge = [50., 80., 85., 95.]
for j in range(n_epochs):
feat = compute_spect_edge_freq(sfreq, data[j, :, :], edge=edge)
assert_equal(feat.shape, (n_channels * 4, ))