go实现程序运行时间

package main
import (
   "fmt"
   "time"
)
type FuncType func()
func main() {
   time := runFuncByConsumptionTime(test)
   fmt.Printf("The consumption time is:%d ms \\n", time)
}
func test() {
   time.Sleep(1*time.Second)
}
func runFuncByConsumptionTime(callback FuncType) int64 {
   start := time.Now().UnixNano() / 1e6
   callback()
   end := time.Now().UnixNano() / 1e6
   return end - start
}