javascript - Jest test case for custom component

Question

I have created a calendar component which has disabledDateCallback has its props passing back date and further it's formatted to MM/DD/YYYY format.

<CalendarPicker 
  disabledDateCallback={(date:Date)=>{   //date: Fri Feb 05 2021 17:49:34 GMT+0530(India Standard Time)
  const newDate = service.format(date)    //newDate: 02/05/2021
    return  service.holidays.some((d)=>{    // return boolean
     newDate === d   
  })
}}
/>

I'm stuck while writing test case for it as follows, not sure how to test service format and holidays so as to expect a boolean value

it("test for disabled dates", () => {
  const calendar = wrapper.find(CalendarPicker);
  calendar.props.disabledDateCallback({date: "Fri Feb 05 2021 17:49:34 GMT+0530(India Standard Time)"});
 expect....
});

question from:https://stackoverflow.com/questions/66063690/jest-test-case-for-custom-component

Answer 1

Waitting for answers