pkg/indexer: add bcp indexer name (#1676)

pkg/indexer/atlasbackupcompliancepolicies.go

@@ -8,7 +8,7 @@ import (
 )
 
 const (
-	AtlasProjectByBackupCompliancePolicyIndex = ""
+	AtlasProjectByBackupCompliancePolicyIndex = "atlasproject.spec.backupCompliancePolicyRef"
 )
 
 type AtlasProjectByBackupCompliancePolicyIndexer struct {

pkg/indexer/indexer_test.go

@@ -0,0 +1,45 @@
+package indexer
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"k8s.io/apimachinery/pkg/util/sets"
+
+	"go.uber.org/zap/zaptest"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/manager"
+)
+
+type managerMock struct {
+	manager.Manager
+	client.FieldIndexer
+
+	fields sets.Set[string]
+}
+
+func (m *managerMock) GetFieldIndexer() client.FieldIndexer {
+	return m
+}
+
+func (m *managerMock) IndexField(ctx context.Context, obj client.Object, field string, extractValue client.IndexerFunc) error {
+	if field == "" {
+		return fmt.Errorf("error adding indexer for type %T: field is empty", obj)
+	}
+
+	if m.fields.Has(field) {
+		return fmt.Errorf("error indexing field %q: field is already registered", field)
+	}
+
+	m.fields.Insert(field)
+
+	return nil
+}
+
+func TestRegisterAll(t *testing.T) {
+	err := RegisterAll(context.Background(), &managerMock{fields: sets.New[string]()}, zaptest.NewLogger(t))
+	if err != nil {
+		t.Error(err)
+	}
+}