test: verify server honors delay-start on continue-as-new#10435
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Add a functional test that sends a continue-as-new command with BackoffStartInterval set directly on the raw gRPC command (the SDKs do not yet expose a delay-start option). Verifies the new run's first workflow task is deferred by the requested interval before running to completion.
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simvlad
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May 30, 2026
Quinn-With-Two-Ns
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What changed
Adds a functional test (
TestContinueAsNewWithDelayStart) covering continue-as-new with a delayed start.The SDKs do not yet expose a delay-start option on the continue-as-new command, so the test sets
BackoffStartIntervaldirectly on the rawContinueAsNewWorkflowExecutionCommandAttributes, which the task poller sends over gRPC verbatim. This simulates an SDK that supports the flag.What it verifies
WorkflowExecutionContinuedAsNewevent records the requestedBackoffStartInterval.WorkflowExecutionStartedevent carries the correspondingFirstWorkflowTaskBackoff.WorkflowTaskScheduledevent timestamp is at least the requested delay after theWorkflowExecutionStartedevent (deterministic, event-timestamp based).WorkflowIdReuseMinimalIntervalis overridden to 0 so the observed backoff is attributable solely to the requested delay.Testing
go test ./tests/ -run 'TestContinueAsNewTestSuite/TestContinueAsNewWithDelayStart'passes.