'Check Model1DKernel against Gaussian1Dkernel'

def test_model_1D_kernel(self):

    stddev = 5.0
    gauss = Gaussian1D((1.0 / np.sqrt(((2 * np.pi) * (stddev ** 2)))), 0, stddev)
    model_gauss_kernel = Model1DKernel(gauss, x_size=21)
    gauss_kernel = Gaussian1DKernel(stddev, x_size=21)
    assert_almost_equal(model_gauss_kernel.array, gauss_kernel.array, decimal=12)
