tuna-timer/tuna-timer-api

package utils

import (
    //. "gopkg.in/check.v1"
    "testing"
    "gopkg.in/tylerb/is.v1"
)

// Used this to verify results: http://everytimezone.com
func TestWhichTimezoneIsMidnightAt(t *testing.T) {

    s := is.New(t)
    // let it be midnight in Greenwich first
    utcHour := 0
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, 0), 0)

    // Rio (-3)
    utcHour = 3
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, 0), -3*60*60)

    // San Francisco (-7)
    utcHour = 7
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, 0), -7*60*60)

    // Honolulu (-10)
    utcHour = 10
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, 0), -10*60*60)

    // Oakland (+13)
    utcHour = 11
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, 0), 13*60*60)

    // Sydney (+10)
    utcHour = 14
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, 0), 10*60*60)

    // Vienna (+2)
    utcHour = 22
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, 0), 2*60*60)

    // Mumbai (+5:30)
    utcHour = 18
    utcMinute := 30
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, utcMinute), 19800)

    utcHour = 21
    utcMinute = 30
    s.Equal(WhichTimezoneIsMidnightAt(utcHour, utcMinute), 10800+30*60)

}