feat(core): new util func to convert enum value slices to string slices (#3714)

Author: rubenhoenle

CHANGELOG.md

@@ -1,6 +1,9 @@
 ## Release (2025-xx-xx)
-- `core`: [v0.18.0](core/CHANGELOG.md#v0180)
-  - **New:** Added duration utils
+- `core`: 
+  - [v0.19.0](core/CHANGELOG.md#v0190)
+    - **New:** Added new `EnumSliceToStringSlice ` util func
+  - [v0.18.0](core/CHANGELOG.md#v0180)
+    - **New:** Added duration utils
 - `stackitmarketplace`:
   - [v1.17.0](services/stackitmarketplace/CHANGELOG.md#v1170)
     - **Feature:** Add new field `Scope` in `CatalogProductPricingOption` model

core/CHANGELOG.md

@@ -1,3 +1,6 @@
+## v0.19.0
+- **New:** Added new `EnumSliceToStringSlice ` util func
+
 ## v0.18.0
 - **New:** Added duration utils
 

core/VERSION

@@ -1 +1 @@
-v0.18.0
+v0.19.0

core/utils/utils.go

@@ -13,3 +13,17 @@ func Contains[T comparable](slice []T, element T) bool {
 	}
 	return false
 }
+
+// EnumSliceToStringSlice is a generic function to convert a slice of any type T
+// that has the underlying type 'string' to a slice of string.
+// The constraint ~string allows T to be any type whose
+// underlying type is string (like the enum types from the generated STACKIT SDK modules).
+func EnumSliceToStringSlice[T ~string](inputSlice []T) []string {
+	result := make([]string, len(inputSlice))
+
+	for i, element := range inputSlice {
+		result[i] = string(element)
+	}
+
+	return result
+}

core/utils/utils_test.go

@@ -1,6 +1,7 @@
 package utils
 
 import (
+	"reflect"
 	"testing"
 )
 
@@ -37,3 +38,51 @@ func TestContainsInt(t *testing.T) {
 		t.Fatalf("Should not be contained")
 	}
 }
+
+func TestEnumSliceToStringSlice(t *testing.T) {
+	type TestEnum string
+
+	const TESTENUM_CREATING TestEnum = "CREATING"
+	const TESTENUM_ACTIVE TestEnum = "ACTIVE"
+	const TESTENUM_UPDATING TestEnum = "UPDATING"
+	const TESTENUM_DELETING TestEnum = "DELETING"
+	const TESTENUM_ERROR TestEnum = "ERROR"
+
+	type args[T interface{ ~string }] struct {
+		inputSlice []T
+	}
+	type test[T interface{ ~string }] struct {
+		name string
+		args args[T]
+		want []string
+	}
+	tests := []test[TestEnum]{
+		{
+			name: "default",
+			args: args[TestEnum]{
+				inputSlice: []TestEnum{
+					TESTENUM_CREATING,
+					TESTENUM_ACTIVE,
+					TESTENUM_UPDATING,
+					TESTENUM_DELETING,
+					TESTENUM_ERROR,
+				},
+			},
+			want: []string{"CREATING", "ACTIVE", "UPDATING", "DELETING", "ERROR"},
+		},
+		{
+			name: "empty input slice",
+			args: args[TestEnum]{
+				inputSlice: []TestEnum{},
+			},
+			want: []string{},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := EnumSliceToStringSlice(tt.args.inputSlice); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("EnumSliceToStringSlice() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}