def METHOD_NAME():
    E = np.arange(100)
    C = np.ones_like(E)
    assert_array_almost_equal(integrate_ROI(E, C, 5.5, 6.5), 1)
    assert_array_almost_equal(integrate_ROI(E, C, 5.5, 11.5), 6)
    assert_array_almost_equal(integrate_ROI(E, C, [5.5, 17], [11.5, 23]), 12)