def test_cp_params():
    coeff = 'not_defined'
    cp = EuclideanCechPersistence(coeff=coeff)

    with pytest.raises(TypeError):
        cp.fit_transform(X)
def test_cp_transform():
    cp = EuclideanCechPersistence()

    assert_almost_equal(cp.fit_transform(X), X_cp_res)