def test_harmonic_mean_for_float_array():
input = np.array([1.0, 2.0, 4.0])
obtained = filter.get_harmonic_mean(input)
assert obtained == 1.714
def test_harmonic_mean_for_int_list():
input = [1, 2, 4]
obtained = filter.get_harmonic_mean(input)
assert obtained == 1.714
def test_harmonic_mean_for_matrix():
input = np.array([[1, 2, 4], [7, 9, 6], [15, 10, 1]])
obtained = filter.get_harmonic_mean(input)
assert obtained == 0.899
def test_harmonic_mean_for_int_array():
input = np.array([1, 2, 4])
obtained = filter.get_harmonic_mean(input)
assert obtained == 1.714
