fix: update typo and add args for fuzz test

Makefile

@@ -27,7 +27,7 @@ golint:
 	mkdir -p $(CURDIR)/.coverage
 
 # -run flag ensures that the fuzz test won't be run
-# because the fuzz test needs to run with the running UPF
+# because the fuzz test needs a UPF to run
 test: .coverage
 	go test	-race -coverprofile=.coverage/coverage-unit.txt -covermode=atomic -run=^Test -v ./...
 

fuzz/ie_fuzz_test.go

@@ -5,6 +5,7 @@ package fuzz
 
 import (
 	"crypto/rand"
+	"flag"
 	"math/big"
 	"testing"
 	"time"
@@ -28,31 +29,11 @@ func getRand(n int) int {
 	return int(res.Int64())
 }
 
-// Example of a basic function test
-// func TestBasicFunction(t *testing.T) {
-// 	sim := export.NewPfcpSimCfg("eth0", "192.168.0.5", "127.0.0.8")
-// 	err := sim.InitPFCPSim()
-// 	if err != nil {
-// 		require.NoError(t, err, "InitPFCPSim failed")
-// 	}
-// 	err = sim.Associate()
-// 	if err != nil {
-// 		require.NoError(t, err, "Associate failed")
-// 	}
-// 	defer func() {
-// 		err = sim.TerminatePFCPSim()
-// 		require.NoError(t, err)
-// 	}()
-// 	err = sim.CreateSession(2,
-// 		session.PdrNoFuzz,
-// 		session.QerNoFuzz,
-// 		session.FarNoFuzz,
-// 		session.UrrNoFuzz,
-// 		uint(0))
-// 	if err != nil {
-// 		require.NoError(t, err, "CreateSession failed")
-// 	}
-// }
+var (
+	iface = flag.String("iface", "eth0", "the interface name you used to establish the connection with UPF.")
+	upfN3 = flag.String("upfN3", "192.168.0.5", "the N3 interface address of the UPF")
+	upfN4 = flag.String("upfN4", "127.0.0.8", "the N4 interface address of the UPF")
+)
 
 func Fuzz(f *testing.F) {
 	var testcases []uint
@@ -69,7 +50,7 @@ func Fuzz(f *testing.F) {
 	f.Fuzz(func(t *testing.T, input uint) {
 		time.Sleep(5 * time.Second)
 
-		sim := export.NewPfcpSimCfg("eth0", "192.168.0.5", "127.0.0.8")
+		sim := export.NewPfcpSimCfg(*iface, *upfN3, *upfN4)
 
 		err := sim.InitPFCPSim()
 		if err != nil {