func Close(t testing.TB, b backend.Backend)
func NewDefaultTmpBackend(t testing.TB) (backend.Backend, string)
func NewTmpBackend(t testing.TB, batchInterval time.Duration, batchLimit int) (backend.Backend, string)
NewTmpBackend creates a backend implementation for testing.
func NewTmpBackendFromCfg(t testing.TB, bcfg backend.BackendConfig) (backend.Backend, string)