def METHOD_NAME():
    # Wrong type of b1 and bk2 power spectra
    with pytest.raises(ValueError):
        ccl.nl_pt.LagrangianPTCalculator(b1_pk_kind='non-linear')
    # Wrong type of b1 and bk2 power spectra
    with pytest.raises(ValueError):
        ccl.nl_pt.LagrangianPTCalculator(bk2_pk_kind='non-linear')
    # Uninitialized templates
    with pytest.raises(ccl.CCLError):
        ptc = ccl.nl_pt.LagrangianPTCalculator()
        ptc.get_biased_pk2d(TRS['TG'])
    # TODO: Discuss this test
    # Wrong pair combination
    with pytest.raises(ValueError):
        ptc = ccl.nl_pt.LagrangianPTCalculator(cosmo=COSMO)
        ptc.get_pk2d_template('b1:b3')