github.com/szq-123/codingpractice@v0.0.0-20240430111904-2778dfaf7994/golang/time_test.go (about)

     1  package golang
     2  
     3  import (
     4  	"fmt"
     5  	"syscall"
     6  	"testing"
     7  	"time"
     8  )
     9  
    10  // reference: https://zhuanlan.zhihu.com/p/324922044
    11  
    12  const (
    13  	timeFormatDay = "2006-01-02"
    14  
    15  	TimeFormatSecond = "2006-01-02 15:04:05"
    16  
    17  	TimeFormatLog = "2006/01/02 15:04:05"
    18  
    19  	TimeFormatMillisecond = "2006-01-02 15:04:05.000"
    20  
    21  	TimeFormatISO = "2006-01-02T15:04:05Z"
    22  )
    23  
    24  func TestTime(t *testing.T) {
    25  	// Parse current time.
    26  	ti := time.Now()
    27  	t1 := ti.Format(TimeFormatMillisecond)
    28  	fmt.Printf("Current Time: %s\n", t1)
    29  
    30  	// Assign location.
    31  	loc, _ := time.LoadLocation("Local") // UTC， or other valid location name
    32  	// another way to get local time zone is time.Local.
    33  	// UTC is accessible if using time.UTC.
    34  	t2, _ := time.ParseInLocation(TimeFormatLog, "2021/11/02 15:04:05", loc)
    35  	fmt.Printf("Parse string as time.Time: %s\n", t2)
    36  }
    37  
    38  func TestGetCTime(t *testing.T) {
    39  	var st syscall.Stat_t
    40  	fileFullPath := "/root/demo.txt"
    41  	err := syscall.Stat(fileFullPath, &st)
    42  	if err != nil {
    43  		fmt.Println(err)
    44  		return
    45  	}
    46  	createTime := time.Unix(st.Ctim.Sec, 0)
    47  	fmt.Println("file is created at ", createTime)
    48  }