Fix: rand seeding error / Test: conf/version and util

pkg/conf/version_test.go

@@ -0,0 +1,27 @@
+package conf
+
+import (
+	"github.com/stretchr/testify/assert"
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func TestWriteVersionLock(t *testing.T) {
+	asserts := assert.New(t)
+
+	// 清理残余文件
+	if _, err := os.Stat("version.lock"); !os.IsNotExist(err) {
+		err = os.Remove("version.lock")
+		asserts.NoError(err)
+	}
+
+	err := WriteVersionLock()
+	defer func() { err = os.Remove("version.lock") }()
+	writtenVersion, err := ioutil.ReadFile("version.lock")
+
+	// 写入的版本应与当前版本相同
+	asserts.NoError(err)
+	asserts.Equal(string(writtenVersion), BackendVersion)
+
+}

pkg/util/common.go

@@ -2,14 +2,12 @@ package util
 
 import (
 	"math/rand"
-	"time"
 )
 
 // RandStringRunes 返回随机字符串
 func RandStringRunes(n int) string {
 	var letterRunes = []rune("1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
 
-	rand.Seed(time.Now().UnixNano())
 	b := make([]rune, n)
 	for i := range b {
 		b[i] = letterRunes[rand.Intn(len(letterRunes))]

pkg/util/common_test.go

@@ -0,0 +1,27 @@
+package util
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestRandStringRunes(t *testing.T) {
+	asserts := assert.New(t)
+
+	// 0 长度字符
+	randStr := RandStringRunes(0)
+	asserts.Len(randStr, 0)
+
+	// 16 长度字符
+	randStr = RandStringRunes(16)
+	asserts.Len(randStr, 16)
+
+	// 32 长度字符
+	randStr = RandStringRunes(32)
+	asserts.Len(randStr, 32)
+
+	//相同长度字符
+	sameLenStr1 := RandStringRunes(32)
+	sameLenStr2 := RandStringRunes(32)
+	asserts.NotEqual(sameLenStr1, sameLenStr2)
+}