diff --git a/pkg/addons/validations_test.go b/pkg/addons/validations_test.go
index 23c2441f8f..aa4cb64038 100644
--- a/pkg/addons/validations_test.go
+++ b/pkg/addons/validations_test.go
@@ -43,3 +43,36 @@ func TestIsAddonValid(t *testing.T) {
 		})
 	}
 }
+
+func TestContains(t *testing.T) {
+	tests := []struct {
+		slice    []string
+		str      string
+		expected bool
+	}{
+		{
+			slice:    []string{},
+			str:      "test",
+			expected: false,
+		},
+		{
+			slice:    []string{"test", "test1"},
+			str:      "test1",
+			expected: true,
+		},
+		{
+			slice:    []string{"test", "test1"},
+			str:      "test2",
+			expected: false,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.str, func(t *testing.T) {
+			actual := contains(test.slice, test.str)
+			if test.expected != actual {
+				t.Fatalf("slice: %v\nstr: %v\nexpected: %v\nactual:%v\n", test.slice, test.str, test.expected, actual)
+			}
+		})
+	}
+}