fix group clone

shared/management/networkmap/nmdata/group.go

@@ -19,9 +19,10 @@ func (g *Group) IsGroupAll() bool {
 
 func (g *Group) Copy() *Group {
 	return &Group{
-		ID:       g.ID,
-		Name:     g.Name,
-		PublicID: g.PublicID,
-		Peers:    slices.Clone(g.Peers),
+		ID:        g.ID,
+		Name:      g.Name,
+		PublicID:  g.PublicID,
+		Peers:     slices.Clone(g.Peers),
+		Resources: slices.Clone(g.Resources),
 	}
 }

shared/management/networkmap/nmdata/group_test.go

@@ -0,0 +1,84 @@
+package nmdata
+
+import (
+	"reflect"
+	"testing"
+)
+
+// TestGroupCopy_AllFieldsCopied fills every Group field with a unique non-zero
+// value derived from its field path, so a field added to Group but forgotten
+// in Copy fails here by name without the test needing an update. The unique
+// per-path values also catch fields swapped inside Copy.
+func TestGroupCopy_AllFieldsCopied(t *testing.T) {
+	src := &Group{}
+	seed := 0
+	fillValue(t, reflect.ValueOf(src).Elem(), "Group", &seed)
+
+	copied := src.Copy()
+
+	srcV := reflect.ValueOf(src).Elem()
+	copiedV := reflect.ValueOf(copied).Elem()
+	for i := 0; i < srcV.NumField(); i++ {
+		name := srcV.Type().Field(i).Name
+		if !reflect.DeepEqual(srcV.Field(i).Interface(), copiedV.Field(i).Interface()) {
+			t.Errorf("field %s not copied: src=%#v copy=%#v",
+				name, srcV.Field(i).Interface(), copiedV.Field(i).Interface())
+		}
+	}
+
+	for i := 0; i < srcV.NumField(); i++ {
+		f := srcV.Field(i)
+		if f.Kind() != reflect.Slice || f.Len() == 0 {
+			continue
+		}
+		name := srcV.Type().Field(i).Name
+		fillValue(t, f.Index(0), name+"-mutated", &seed)
+		if reflect.DeepEqual(f.Interface(), copiedV.Field(i).Interface()) {
+			t.Errorf("field %s shares memory with the copy", name)
+		}
+	}
+}
+
+// fillValue sets v to a deterministic non-zero value derived from its field
+// path. Kinds it does not handle fail the test loudly, so the filler is
+// extended together with the struct instead of silently under-testing new
+// fields.
+func fillValue(t *testing.T, v reflect.Value, path string, seed *int) {
+	t.Helper()
+
+	switch v.Kind() {
+	case reflect.String:
+		v.SetString(path)
+	case reflect.Bool:
+		v.SetBool(true)
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		*seed++
+		v.SetInt(int64(*seed))
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		*seed++
+		v.SetUint(uint64(*seed))
+	case reflect.Float32, reflect.Float64:
+		*seed++
+		v.SetFloat(float64(*seed))
+	case reflect.Slice:
+		s := reflect.MakeSlice(v.Type(), 2, 2)
+		fillValue(t, s.Index(0), path+"[0]", seed)
+		fillValue(t, s.Index(1), path+"[1]", seed)
+		v.Set(s)
+	case reflect.Struct:
+		settable := 0
+		for i := 0; i < v.NumField(); i++ {
+			f := v.Field(i)
+			if !f.CanSet() {
+				continue
+			}
+			settable++
+			fillValue(t, f, path+"."+v.Type().Field(i).Name, seed)
+		}
+		if settable == 0 {
+			t.Fatalf("struct %s at %s has no settable fields — extend fillValue to construct it", v.Type(), path)
+		}
+	default:
+		t.Fatalf("unsupported kind %s at %s — extend fillValue", v.Kind(), path)
+	}
+}