test/e2e/scheduling:improve code

Author: tanjunchen

test/e2e/scheduling/nvidia-gpus.go

@@ -288,11 +288,11 @@ func VerifyJobNCompletions(f *framework.Framework, completions int32) {
 	framework.Logf("Got the following pods for job cuda-add: %v", createdPodNames)
 
 	successes := int32(0)
+	regex := regexp.MustCompile("PASSED")
 	for _, podName := range createdPodNames {
 		f.PodClient().WaitForFinish(podName, 5*time.Minute)
 		logs, err := e2epod.GetPodLogs(f.ClientSet, ns, podName, "vector-addition")
 		framework.ExpectNoError(err, "Should be able to get logs for pod %v", podName)
-		regex := regexp.MustCompile("PASSED")
 		if regex.MatchString(logs) {
 			successes++
 		}

test/e2e/scheduling/predicates.go

@@ -1039,7 +1039,7 @@ func createHostPortPodOnNode(f *framework.Framework, podName, ns, hostIP string,
 // adding the well known prefix "0::ffff:" https://tools.ietf.org/html/rfc2765
 // if the ip is IPv4 and the cluster IPFamily is IPv6, otherwise returns the same ip
 func translateIPv4ToIPv6(ip string) string {
-	if framework.TestContext.IPFamily == "ipv6" && !k8utilnet.IsIPv6String(ip) && ip != "" {
+	if framework.TestContext.IPFamily == "ipv6" && ip != "" && !k8utilnet.IsIPv6String(ip) {
 		ip = "0::ffff:" + ip
 	}
 	return ip