def METHOD_NAME():
    e1, e2 = -0.04, -0.01
    phi, gamma = param_util.shear_cartesian2polar(e1, e2)
    e1_out, e2_out = param_util.shear_polar2cartesian(phi, gamma)
    npt.assert_almost_equal(e1, e1_out, decimal=10)
    npt.assert_almost_equal(e2, e2_out, decimal=10)