cleanup: move internal/rbd/errors.go to internal/rbd/errors pacakge

Signed-off-by: Praveen M <m.praveen@ibm.com>

internal/rbd/group/util_test.go

@@ -0,0 +1,73 @@
+/*
+Copyright 2025 The Ceph-CSI Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package group
+
+import (
+	"errors"
+	"testing"
+
+	rbderrors "github.com/ceph/ceph-csi/internal/rbd/errors"
+	"github.com/ceph/ceph-csi/internal/util"
+
+	"github.com/ceph/go-ceph/rados"
+)
+
+func Test_shouldRetryVolumeGroupGeneration(t *testing.T) {
+	t.Parallel()
+	type args struct {
+		err error
+	}
+	tests := []struct {
+		name string
+		args args
+		want bool
+	}{
+		{
+			name: "No error (stop searching)",
+			args: args{err: nil},
+			want: false, // No error, stop searching
+		},
+		{
+			name: "ErrPoolNotFound (continue searching)",
+			args: args{err: util.ErrPoolNotFound},
+			want: true, // Known error, continue searching
+		},
+		{
+			name: "ErrRBDGroupNotFound (continue searching)",
+			args: args{err: rbderrors.ErrGroupNotFound},
+			want: true, // Known error, continue searching
+		},
+		{
+			name: "ErrPermissionDenied (continue searching)",
+			args: args{err: rados.ErrPermissionDenied},
+			want: true, // Known error, continue searching
+		},
+		{
+			name: "Different error (stop searching)",
+			args: args{err: errors.New("unknown error")},
+			want: false, // Unknown error, stop searching
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			if got := ShouldRetryVolumeGroupGeneration(tt.args.err); got != tt.want {
+				t.Errorf("ShouldRetryVolumeGeneration() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}