[exporterhelper] Batchsender hangs generated component shutdown test

[carsonip]

Describe the bug

Any exporter using exporterhelper batchsender will cause its generated_component_test.go -shutdown test to hang as Shutdown will never return if it is not started.

Control will be stuck at https://github.com/open-telemetry/opentelemetry-collector/blob/release/v0.102.x/exporter/exporterhelper/batch_sender.go#L231

@dmitryax I wonder if the generated shutdown test needs to start the exporter, or batchsender needs to handle unstarted batcher.

Steps to reproduce

Use batchsender with WithBatcher. Run generated_component_test.go

What did you expect to see?

Test passes

What did you see instead?

Test hangs

What version did you use?

v0.102.0

What config did you use?

Environment

Additional context

[atoulme]

The shutdown test explicitly checks calling shutdown without starting first.

[carsonip]

The shutdown test explicitly checks calling shutdown without starting first.

Thanks, then it is a batchsender problem. I'll put up a patch