/
logr_test.go
180 lines (137 loc) · 3.71 KB
/
logr_test.go
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package logr_test
import (
"bytes"
"compress/gzip"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/vrischmann/logr"
)
func makeBuf(b byte) []byte {
buf := make([]byte, 1024)
for i := 0; i < len(buf); i++ {
buf[i] = b
}
return buf
}
func readFile(t testing.TB, filename string) []byte {
data, err := ioutil.ReadFile(filename)
require.Nil(t, err)
return data
}
func checkEqual(t testing.TB, buf []byte, b byte) error {
for _, v := range buf {
if v != b {
return fmt.Errorf("%v != %v", v, b)
}
}
return nil
}
func TestRotateMaxSize(t *testing.T) {
f, err := ioutil.TempFile(os.TempDir(), "logr")
require.Nil(t, err)
rw, err := logr.NewWriterFromFile(f)
require.Nil(t, err)
now := time.Now()
{
n, err := rw.Write(makeBuf(0xFF))
require.Nil(t, err)
require.Equal(t, 1024, n)
rw.MaxSize(512)
n, err = rw.Write(makeBuf(0xFE))
require.Nil(t, err)
require.Equal(t, 1024, n)
}
newData := readFile(t, f.Name())
require.Nil(t, checkEqual(t, newData, 0xFE))
rotatedData := readFile(t, f.Name()+"."+now.Format(logr.TimeFormat))
require.Nil(t, checkEqual(t, rotatedData, 0xFF))
}
func TestRotateWithCompression(t *testing.T) {
f, err := ioutil.TempFile(os.TempDir(), "logr")
require.Nil(t, err)
rw, err := logr.NewWriterFromFileWithCompression(f)
require.Nil(t, err)
// add some clear text at the beginning of the file
text := []byte("This is some clear test at the beginning of the file.")
now := time.Now()
{
n, err := rw.Write(text)
require.Nil(t, err)
require.Equal(t, len(text), n)
n, err = rw.Write(makeBuf(0xFF))
require.Nil(t, err)
require.Equal(t, 1024, n)
rw.MaxSize(512)
n, err = rw.Write(makeBuf(0xFE))
require.Nil(t, err)
require.Equal(t, 1024, n)
}
newData := readFile(t, f.Name())
require.Nil(t, checkEqual(t, newData, 0xFE))
{
f, err := os.Open(f.Name() + "." + now.Format(logr.TimeFormat) + ".gz")
require.Nil(t, err)
require.NotNil(t, f)
rotatedDataGz, err := ioutil.ReadAll(f)
require.Nil(t, err)
require.NotEqual(t, 0, len(rotatedDataGz))
// should not be equal cause it has been gzipped
require.NotEqual(t, text, rotatedDataGz[:len(text)])
// gunzip
r, err := gzip.NewReader(bytes.NewReader(rotatedDataGz))
require.Nil(t, err)
gunzip, err := ioutil.ReadAll(r)
require.Nil(t, err)
// should be equal cause now gunzipped
require.Equal(t, text, gunzip[:len(text)])
}
}
func TestRotateMaxSizeCustomTimeFormat(t *testing.T) {
f, err := ioutil.TempFile(os.TempDir(), "logr")
require.Nil(t, err)
rw, err := logr.NewWriterFromFile(f)
require.Nil(t, err)
rw.TimeFormat("2006__01__02")
now := time.Now()
{
n, err := rw.Write(makeBuf(0xFF))
require.Nil(t, err)
require.Equal(t, 1024, n)
rw.MaxSize(512)
n, err = rw.Write(makeBuf(0xFE))
require.Nil(t, err)
require.Equal(t, 1024, n)
}
newData := readFile(t, f.Name())
require.Nil(t, checkEqual(t, newData, 0xFE))
rotatedData := readFile(t, f.Name()+"."+now.Format("2006__01__02"))
require.Nil(t, checkEqual(t, rotatedData, 0xFF))
}
func TestRotateMaxSizePrefix(t *testing.T) {
f, err := ioutil.TempFile(os.TempDir(), "logr")
require.Nil(t, err)
rw, err := logr.NewWriterFromFile(f)
require.Nil(t, err)
rw.Prefix()
now := time.Now()
{
n, err := rw.Write(makeBuf(0xFF))
require.Nil(t, err)
require.Equal(t, 1024, n)
rw.MaxSize(512)
n, err = rw.Write(makeBuf(0xFE))
require.Nil(t, err)
require.Equal(t, 1024, n)
}
newData := readFile(t, f.Name())
require.Nil(t, checkEqual(t, newData, 0xFE))
ext := filepath.Ext(f.Name())
name := f.Name()[:len(f.Name())-len(ext)]
rotatedData := readFile(t, name+"."+now.Format(logr.TimeFormat)+ext)
require.Nil(t, checkEqual(t, rotatedData, 0xFF))
}