From 36c23ef6f5fff8a5269d5aca152eb697ff8206e5 Mon Sep 17 00:00:00 2001
From: "xian-jie.shen" <327411586@qq.com>
Date: Sat, 13 Aug 2022 14:27:04 +0800
Subject: [PATCH] test: pkg-utils-slice

Signed-off-by: xian-jie.shen <327411586@qq.com>
---
 pkg/utils/slice.go      |  3 ++
 pkg/utils/slice_test.go | 77 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 80 insertions(+)
 create mode 100644 pkg/utils/slice_test.go

diff --git a/pkg/utils/slice.go b/pkg/utils/slice.go
index f35a3a841..0b5470e64 100644
--- a/pkg/utils/slice.go
+++ b/pkg/utils/slice.go
@@ -10,6 +10,9 @@ func ContainsString(slice []string, str string) bool {
 }
 
 func RemoveString(slice []string, str string) []string {
+	if len(slice) == 0 {
+		return slice
+	}
 	var newSlice []string
 	for _, item := range slice {
 		if item != str {
diff --git a/pkg/utils/slice_test.go b/pkg/utils/slice_test.go
new file mode 100644
index 000000000..a3e2e86c2
--- /dev/null
+++ b/pkg/utils/slice_test.go
@@ -0,0 +1,77 @@
+package utils
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestContainsString(t *testing.T) {
+	tests := []struct {
+		name  string
+		slice []string
+		str   string
+		want  bool
+	}{
+		{
+			name:  "slice is empty",
+			slice: []string{},
+			str:   "a",
+			want:  false,
+		},
+		{
+			name:  "searching object exists the slice",
+			slice: []string{"a", "b"},
+			str:   "a",
+			want:  true,
+		},
+		{
+			name:  "searching object doesn't exist the slice",
+			slice: []string{"a", "b"},
+			str:   "c",
+			want:  false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ContainsString(tt.slice, tt.str); got != tt.want {
+				t.Errorf("ContainsString() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestRemoveString(t *testing.T) {
+	tests := []struct {
+		name  string
+		slice []string
+		str   string
+		want  []string
+	}{
+		{
+			name:  "removing object exists the slice",
+			slice: []string{"a", "b", "c"},
+			str:   "b",
+			want:  []string{"a", "c"},
+		},
+		{
+			name:  "remove object doesn't exist in the slice",
+			slice: []string{"a", "b", "c"},
+			str:   "d",
+			want:  []string{"a", "b", "c"},
+		},
+		{
+			name:  "the slice is empty",
+			slice: []string{},
+			str:   "d",
+			want:  []string{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := RemoveString(tt.slice, tt.str); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("RemoveString() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}