def METHOD_NAME(self):
    """
    Uses a Molpro log file for ethylene_dz (C2H4) to test that F12a
    energy can be properly read.
    """
    log = MolproLog(os.path.join(self.data_path, "ethylene_f12_dz.out"))
    e0 = log.load_energy()
    assert round(abs(e0 / constants.Na / constants.E_h - -78.474353559604), 5) == 0