package historian import ( "context" "fmt" "github.com/grafana/grafana/pkg/services/annotations" ) type failingAnnotationRepo struct{} func (f *failingAnnotationRepo) SaveMany(_ context.Context, _ []annotations.Item) error { return fmt.Errorf("failed to save annotations") } func (f *failingAnnotationRepo) Find(_ context.Context, _ *annotations.ItemQuery) ([]*annotations.ItemDTO, error) { return nil, fmt.Errorf("failed to query annotations") }