'Check if convolve_fft works when passing a normalize function.'

def test_normalize_function(self):

    array = [1, 2, 3]
    kernel = [3, 3, 3]
    result = convolve_fft(array, kernel, normalize_kernel=np.max)
    assert_allclose(result, [3, 6, 5], atol=1e-14)
