cleanup: delete rand.Seed(time.Now().UnixNano()) and using global number generator.

see https://tip.golang.org/doc/go1.20

Signed-off-by: Lan Liang <gcslyp@gmail.com>

pkg/util/filesystem/util_windows_test.go

@@ -34,7 +34,6 @@ import (
 
 func TestIsUnixDomainSocketPipe(t *testing.T) {
 	generatePipeName := func(suffixLen int) string {
-		rand.Seed(time.Now().UnixNano())
 		letter := []rune("abcdef0123456789")
 		b := make([]rune, suffixLen)
 		for i := range b {

staging/src/k8s.io/client-go/tools/cache/main_test.go

@@ -17,13 +17,10 @@ limitations under the License.
 package cache
 
 import (
-	"math/rand"
 	"os"
 	"testing"
-	"time"
 )
 
 func TestMain(m *testing.M) {
-	rand.Seed(time.Now().UnixNano())
 	os.Exit(m.Run())
 }

staging/src/k8s.io/client-go/tools/record/main_test.go

@@ -17,13 +17,10 @@ limitations under the License.
 package record
 
 import (
-	"math/rand"
 	"os"
 	"testing"
-	"time"
 )
 
 func TestMain(m *testing.M) {
-	rand.Seed(time.Now().UnixNano())
 	os.Exit(m.Run())
 }

staging/src/k8s.io/client-go/util/workqueue/main_test.go

@@ -17,13 +17,10 @@ limitations under the License.
 package workqueue
 
 import (
-	"math/rand"
 	"os"
 	"testing"
-	"time"
 )
 
 func TestMain(m *testing.M) {
-	rand.Seed(time.Now().UnixNano())
 	os.Exit(m.Run())
 }

staging/src/k8s.io/component-base/cli/run.go

@@ -18,9 +18,7 @@ package cli
 
 import (
 	"fmt"
-	"math/rand"
 	"os"
-	"time"
 
 	"github.com/spf13/cobra"
 
@@ -86,7 +84,6 @@ func RunNoErrOutput(cmd *cobra.Command) error {
 }
 
 func run(cmd *cobra.Command) (logsInitialized bool, err error) {
-	rand.Seed(time.Now().UnixNano())
 	defer logs.FlushLogs()
 
 	cmd.SetGlobalNormalizationFunc(cliflag.WordSepNormalizeFunc)

test/e2e/e2e_test.go

@@ -19,11 +19,9 @@ package e2e
 import (
 	"flag"
 	"fmt"
-	"math/rand"
 	"os"
 	"path/filepath"
 	"testing"
-	"time"
 
 	"github.com/onsi/ginkgo/v2"
 	"gopkg.in/yaml.v2"
@@ -142,7 +140,6 @@ func TestMain(m *testing.M) {
 		testfiles.AddFileSource(testfiles.RootFileSource{Root: framework.TestContext.RepoRoot})
 	}
 
-	rand.Seed(time.Now().UnixNano())
 	os.Exit(m.Run())
 }
 

test/e2e_node/e2e_node_suite_test.go

@@ -28,7 +28,6 @@ import (
 	"flag"
 	"fmt"
 
-	"math/rand"
 	"os"
 	"os/exec"
 	"syscall"
@@ -133,7 +132,6 @@ func TestMain(m *testing.M) {
 	// into TestContext.
 	// TODO(pohly): remove RegisterNodeFlags from test_context.go enable Viper config support here?
 
-	rand.Seed(time.Now().UnixNano())
 	pflag.Parse()
 	if pflag.CommandLine.NArg() > 0 {
 		fmt.Fprintf(os.Stderr, "unknown additional command line arguments: %s", pflag.CommandLine.Args())

test/e2e_node/remote/run_remote_suite.go

@@ -20,13 +20,11 @@ import (
 	"flag"
 	"fmt"
 	"log"
-	"math/rand"
 	"os"
 	"os/exec"
 	"os/signal"
 	"strings"
 	"sync"
-	"time"
 
 	"k8s.io/klog/v2"
 )
@@ -77,7 +75,6 @@ func RunRemoteTestSuite(testSuite TestSuite) {
 		os.Exit(1)
 	}()
 
-	rand.Seed(time.Now().UnixNano())
 	if *buildOnly {
 		// Build the archive and exit
 		CreateTestArchive(testSuite,

test/integration/volume/main_test.go

@@ -17,14 +17,11 @@ limitations under the License.
 package volume
 
 import (
-	"math/rand"
 	"testing"
-	"time"
 
 	"k8s.io/kubernetes/test/integration/framework"
 )
 
 func TestMain(m *testing.M) {
-	rand.Seed(time.Now().UnixNano())
 	framework.EtcdMain(m.Run)
 }