def METHOD_NAME(self, kernel):
    """
    Test smoothing of an image with a single positive pixel
    """
    shape = kernel.array.shape
    x = np.zeros(shape)
    xslice = tuple(slice(sh // 2, sh // 2 + 1) for sh in shape)
    x[xslice] = 1.0
    c2 = convolve_fft(x, kernel, boundary="fill")
    c1 = convolve(x, kernel, boundary="fill")
    assert_almost_equal(c1, c2, decimal=12)