add fuzz test for remove string utility function

.github/workflows/build.yml

@@ -22,7 +22,7 @@ jobs:
         run: make gofmt-check
 
       - name: golangci-lint
-        uses: reviewdog/action-golangci-lint@v1
+        uses: reviewdog/action-golangci-lint@v2
 
       - name: unused-package check
         run: make unused-package-check

.github/workflows/push.yml

@@ -24,7 +24,7 @@ jobs:
         run: make gofmt-check
 
       - name: golangci-lint
-        uses: reviewdog/action-golangci-lint@v1
+        uses: reviewdog/action-golangci-lint@v2
 
       - name: unused-package check
         run: make unused-package-check

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
         run: make gofmt-check
 
       - name: golangci-lint
-        uses: reviewdog/action-golangci-lint@v1
+        uses: reviewdog/action-golangci-lint@v2
 
       - name: unused-package check
         run: make unused-package-check

go.mod

@@ -20,6 +20,7 @@ require (
 )
 
 require (
+	github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24
 	github.com/google/martian v2.1.0+incompatible
 	github.com/onsi/ginkgo v1.16.4
 	github.com/onsi/gomega v1.15.0

go.sum

@@ -43,6 +43,8 @@ cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RX
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 contrib.go.opencensus.io/exporter/ocagent v0.6.0/go.mod h1:zmKjrJcdo0aYcVS7bmEeSEBLPA9YJp5bjrofdU3pIXs=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24 h1:bvDV9vkmnHYOMsOr4WLk+Vo07yKIzd94sVoIqshQ4bU=
+github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24/go.mod h1:8o94RPi1/7XTJvwPpRSzSUedZrtlirdB3r9Z20bi2f8=
 github.com/Azure/azure-pipeline-go v0.2.1/go.mod h1:UGSo8XybXnIGZ3epmeBw7Jdz+HiUVpqIlpz/HKHylF4=
 github.com/Azure/azure-pipeline-go v0.2.2/go.mod h1:4rQ/NZncSvGqNkkOsNpOU1tgoNuIlp9AfUH5G1tvCHc=
 github.com/Azure/azure-sdk-for-go v16.2.1+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=

pkg/utils/utils.go

@@ -22,6 +22,9 @@ import (
 
 // RemoveString removes a particular string from a slice of strings
 func RemoveString(slice []string, s string) (result []string) {
+	if len(slice) == 0 {
+		return
+	}
 	for _, item := range slice {
 		if item == s {
 			continue

pkg/utils/utils_fuzz_test.go

@@ -17,8 +17,11 @@ limitations under the License.
 package utils
 
 import (
+	"math/rand"
 	"testing"
+	"unicode"
 
+	fuzzheaders "github.com/AdaLogics/go-fuzz-headers"
 	"github.com/stretchr/testify/assert"
 	v1 "k8s.io/api/core/v1"
 )
@@ -55,3 +58,60 @@ func FuzzSetEnv(f *testing.F) {
 		}
 	})
 }
+
+func FuzzRemoveString(f *testing.F) {
+	f.Fuzz(func(t *testing.T, extra string, data []byte) {
+		consumer := fuzzheaders.NewConsumer(data)
+		testInput := &struct {
+			Data map[string]int
+		}{}
+		err := consumer.GenerateStruct(testInput)
+		if err != nil {
+			return
+		}
+		max := len(testInput.Data) - 1
+		if max < 0 {
+			max = 0
+		}
+		randomNumber := func(min, max int) int {
+			if max == 0 {
+				return 0
+			}
+			return rand.Intn(max-min) + min
+		}(0, max)
+		index := 0
+		full := make([]string, 0)
+		exclude := ""
+		result := make([]string, 0)
+		for k := range testInput.Data {
+			if k == "" {
+				continue
+			}
+			if !func() bool {
+				for _, r := range k {
+					if !unicode.IsLetter(r) {
+						return false
+					}
+				}
+				return true
+			}() {
+				continue
+			}
+			full = append(full, k)
+			if index == randomNumber {
+				exclude = k
+			}
+			if index != randomNumber {
+				result = append(result, k)
+			}
+		}
+		if exclude != "" {
+			return
+		}
+		got := RemoveString(full, exclude)
+		if got == nil {
+			got = make([]string, 0)
+		}
+		assert.Equal(t, result, got)
+	})
+}