test/compare/compare_test.go

package compare_test

import (
	"sort"
	"testing"
	"time"
)

func BenchmarkTimeCompare(t *testing.B) {
	for i := 0; i < 1000000; i++ {
		b := time.Now().After(time.Now())
		if b {
			print("!")
		}
	}
}

func BenchmarkTimeNSCompare(t *testing.B) {
	for i := 0; i < 1000000; i++ {
		b := time.Now().UnixNano() > time.Now().UnixNano()
		if b {
			print("!")
		}
	}
}

func TestSortSearch(t *testing.T) {
	ta := []int{}
	for i := 0; i < 100; i++ {
		ta = append(ta, i*2)
	}
	from := sort.Search(len(ta)-1, func(i int) bool {
		return ta[i] >= -23
	})
	to := sort.Search(len(ta)-1, func(i int) bool {
		return ta[i] >= 200
	})
	println("[23,36]=", "index[", from, ",", to, "]")
	println(ta[from], ",", ta[to])
}