def METHOD_NAME(self):
    arcsec = np.array([1, 2])  # pixel coordinate from center
    physcoord = self.lensCosmo.arcsec2phys_lens(arcsec)
    npt.assert_almost_equal(physcoord[0], 0.0075083362428338641, decimal=8)
    npt.assert_almost_equal(physcoord[1], 0.015016672485667728, decimal=8)
    physcoord = self.lensCosmo.arcsec2phys_source(arcsec)
    npt.assert_almost_equal(physcoord[0], 0.007703308130864105, decimal=8)
    npt.assert_almost_equal(physcoord[1], 0.01540661626172821, decimal=8)