package main

import (
	"fmt"
	"time"
)

func Example_parseCertDuration() {
	now := time.Date(2020, time.April, 28, 12, 30, 0, 0, time.UTC)

	fmt.Println(parseCertDuration("", now))
	fmt.Println(parseCertDuration("hi!", now))
	fmt.Println(parseCertDuration("-2d3h", now))
	fmt.Println(parseCertDuration("2d3h", now))
	fmt.Println(parseCertDuration("+1y-1s", now))

	// output:
	// 0001-01-01 00:00:00 +0000 UTC <nil>
	// 0001-01-01 00:00:00 +0000 UTC invalid duration: "hi!"
	// 2020-04-26 09:30:00 +0000 UTC <nil>
	// 2020-04-30 15:30:00 +0000 UTC <nil>
	// 2021-04-28 12:29:59 +0000 UTC <nil>
}