import { formatDate , getDSTInfo } from "./date" ; describe ( "formatDate()" , ( ) => { it ( "should work correctly" , ( ) => { expect ( formatDate ( new Date ( 2021 , 5 , 15 ) , "YYYY-MM-DD" ) ) . toEqual ( "2021-06-15" ) ; } ) ; } ) ; describe ( "getDSTInfo()" , ( ) => { if ( Intl . DateTimeFormat ( ) . resolvedOptions ( ) . timeZone === "Europe/Berlin" ) { it ( "should work correctly" , ( ) => { let dstInfo = getDSTInfo ( new Date ( "2021-05-15T01:00:00.000Z" ) ) ; expect ( dstInfo ) . toEqual ( { dstOffset : 120 , endDate : new Date ( "2021-10-31T01:00:00.000Z" ) , standardOffset : 60 , startDate : new Date ( "2021-03-28T01:00:00.000Z" ) } ) ; dstInfo = getDSTInfo ( new Date ( "2020-11-12T01:00:00.000Z" ) ) ; expect ( dstInfo ) . toEqual ( { dstOffset : 120 , endDate : new Date ( "2020-10-25T01:00:00.000Z" ) , standardOffset : 60 , startDate : new Date ( "2021-03-28T01:00:00.000Z" ) } ) ; } ) ; } } ) ;