使用复选框 - 无法检查复选框是否被禁用

class eligibleAccountType {
  constructor (text) {
      this.label    = label.withText(text);
      this.checkbox = this.label.find('input[type=checkbox]');
  }
}

class ProgramOptionsSubscriptionRulesPage{
    constructor(){
        this.contractsatAccountLevel = Selector("#program_option_allow_participant_account_contracts")
        this.eligibleAccountTypesList = [
          new eligibleAccountType("Residential"),
          new eligibleAccountType("Commercial"),
          new eligibleAccountType("Industrial")
      ];

if (userdata.userrole == "Read Only") {
 
 for (const eligibleAccountType of programOptionsSubscriptionRulesPage.eligibleAccountTypeList) {
            await t.expect(eligibleAccountType.hasAttribute('disabled')).ok()
          }
        }