def test_constant():
# Should detect *no* zero crossings with a constant array
# Specify `AC_coupled` = False to prevent computation of DC offset,
# which is only a well-defined operation when there are two or more
# zero crossings of the same type.
zc = ZeroCrossing(np.array([1, 1]), 1, auto=False)
tools.assert_equal(len(zc._getRisingZeroCrossingIndices()), 0)
tools.assert_equal(len(zc._getRisingZeroCrossingTimesLerp()), 0)
def test_linear():
# Should detect *one* rising zero crossing
# Specify `AC_coupled` = False to prevent computation of DC offset,
# which is only a well-defined operation when there are two or more
# zero crossings of the same type.
zc = ZeroCrossing(np.array([-1, 0, 1]), 1, auto=False)
tools.assert_equal(zc._getRisingZeroCrossingIndices(), np.array([0]))
tools.assert_equal(zc._getRisingZeroCrossingTimesLerp(), np.array([1]))
