package test

import (
    "fmt"
    "github.com/shirou/gopsutil/v3/cpu"
    "github.com/shirou/gopsutil/v3/disk"
    "github.com/shirou/gopsutil/v3/load"
    "github.com/shirou/gopsutil/v3/mem"
    "runtime"
    "testing"
    "time"
)

func TestGoPsutil(t *testing.T) {
    fmt.Println("os:", runtime.GOOS)
    fmt.Println("threads:", runtime.GOMAXPROCS(0))

    v, _ := mem.VirtualMemory()

    loadAvg, _ := load.Avg()

    fmt.Println("loadavg", loadAvg.String())

    fmt.Printf("Total: %v, Free:%v, UsedPercent:%f%%\n", v.Total, v.Free, v.UsedPercent)
    cpuTimesBefore, _ := cpu.Times(false)
    time.Sleep(1000*time.Millisecond)
    cpuTimesAfter, _ := cpu.Times(false)
    threadNum := runtime.GOMAXPROCS(0)
    fmt.Println(cpuTimesBefore[0].String(), "\n", cpuTimesAfter[0].String())
    cpuUserUsage := (cpuTimesAfter[0].User - cpuTimesBefore[0].User) / (float64(1000*threadNum) / 1000)
    cpuSystemUsage := (cpuTimesAfter[0].System - cpuTimesBefore[0].System) / (float64(1000*threadNum) / 1000)
    fmt.Printf("%.2f, %.2f\n", cpuUserUsage*100, cpuSystemUsage*100)

    diskUsage, _ := disk.Usage(".")
    fmt.Println(diskUsage.String())
}