chore: coding style (#3959)

core/mr/mapreduce_fuzz_test.go

@@ -13,7 +13,7 @@ import (
 )
 
 func FuzzMapReduce(f *testing.F) {
-	rand.Seed(time.Now().UnixNano())
+	rand.NewSource(time.Now().UnixNano())
 
 	f.Add(int64(10), runtime.NumCPU())
 	f.Fuzz(func(t *testing.T, n int64, workers int) {

core/mr/mapreduce_fuzzcase_test.go

@@ -20,7 +20,7 @@ import (
 // If Fuzz stuck, we don't know why, because it only returns hung or unexpected,
 // so we need to simulate the fuzz test in test mode.
 func TestMapReduceRandom(t *testing.T) {
-	rand.Seed(time.Now().UnixNano())
+	rand.NewSource(time.Now().UnixNano())
 
 	const (
 		times  = 10000

core/stores/redis/redislock.go

@@ -41,7 +41,7 @@ type RedisLock struct {
 }
 
 func init() {
-	rand.Seed(time.Now().UnixNano())
+	rand.NewSource(time.Now().UnixNano())
 }
 
 // NewRedisLock returns a RedisLock.

core/stringx/node_fuzz_test.go

@@ -11,7 +11,7 @@ import (
 )
 
 func FuzzNodeFind(f *testing.F) {
-	rand.Seed(time.Now().UnixNano())
+	rand.NewSource(time.Now().UnixNano())
 
 	f.Add(10)
 	f.Fuzz(func(t *testing.T, keys int) {

core/threading/stablerunner_test.go

@@ -12,7 +12,7 @@ import (
 
 func TestStableRunner(t *testing.T) {
 	size := bufSize * 2
-	rand.Seed(time.Now().UnixNano())
+	rand.NewSource(time.Now().UnixNano())
 	runner := NewStableRunner(func(v int) float64 {
 		if v == 0 {
 			time.Sleep(time.Millisecond * 100)
@@ -49,7 +49,7 @@ func TestStableRunner(t *testing.T) {
 }
 
 func FuzzStableRunner(f *testing.F) {
-	rand.Seed(time.Now().UnixNano())
+	rand.NewSource(time.Now().UnixNano())
 	f.Add(uint64(bufSize))
 	f.Fuzz(func(t *testing.T, n uint64) {
 		runner := NewStableRunner(func(v int) float64 {