def METHOD_NAME(self):
    # check entries in charged/discharged state
    for formula in self.formulas:
        CE = self.conversion_electrodes[formula]["CE"]
        for step, vpair in enumerate(CE.voltage_pairs):
            # entries_charge/entries_discharge attributes should return entries equal with the expected
            composite_dict = self.expected_composite[formula]
            for attri in ["entries_charge", "entries_discharge"]:
                # composite at each discharge step, of which entry object is simplified to reduced formula
                entries_formula_list = [entry.composition.reduced_formula for entry in getattr(vpair, attri)]
                assert entries_formula_list == composite_dict[attri][step]