pubsub/tasks/013-worker-adapter-tests.md

id, name, status, depends_on, scope, risk, impact, level

id	name	status	depends_on	scope	risk	impact	level
worker-adapter-tests	Write tests for Worker event target adapter	completed	worker-adapter-implementation	moderate	medium	component	implementation

Description

Write tests for the Worker event target adapter(s). Testing Workers is non-trivial because it requires creating actual Worker instances or mocking the postMessage/onmessage API.

Test scenarios from the architecture doc:

1. Main → Worker send — dispatchEvent from main posts message to worker
2. Worker → Main send — dispatchEvent from worker posts message to main
3. Bidirectional — both sides can subscribe and publish
4. Topic scoping — type:id topics correctly formed
5. Envelope round-trip — full envelope survives serialization
6. Worker termination — cleanup when worker exits

Acceptance Criteria

• test/event-target-worker.test.ts exists and passes
• Mock strategy for Worker environment established (actual workers, vitest worker threads, or mocked postMessage)
• Test: host dispatchEvent posts message to worker via postMessage
• Test: worker thread dispatchEvent posts message to parent
• Test: bidirectional communication works
• Test: type:id topic scoping works correctly
• Test: EventEnvelope round-trips through serialization
• Test: addEventListener and removeEventListener work on both sides

References

• docs/architecture/event-targets/worker.md (Test Plan section)
• src/event-target-worker.ts

Notes

To be filled by implementation agent

Summary

To be filled on completion