Adds `write_handle_correlates_with_router_emitted_status` — the
closest-to-live test we can write without an AVEVA endpoint, pinning
the F54 boundary the C# `OnWriteComplete` callback ultimately depends
on.
The existing tests cover the layers individually:
- `write_value_with_handle_inserts_into_pending_ops` — write API
populates pending_ops with the right correlation id.
- `router_populates_operation_status_context_from_pending_ops_fifo`
— callback_router consumes a frame + the registry, emits a typed
OperationStatus with context attached.
- `drain_routes_write_status_to_on_write_complete` (mxaccess-compat)
— drain function routes Write op_kind to on_write_complete_tx.
What was missing: a test that combines the public `write_value_with_
handle` API with a real callback_router invocation against the SAME
`pending_ops` Arc the write populated. The new test:
1. Builds a Session via `connect_test_session`.
2. Calls `session.write_value_with_handle("TestObj.TestInt", ...)` —
gets a real `WriteHandle { correlation_id }` and a real entry in
`pending_ops` (no manual insertion).
3. Spins a parallel `callback_router` over the SESSION's
`pending_ops` Arc + a fake event_tx (the live exporter's
internal channel isn't reachable from tests; this is the
established workaround pattern from
`router_task_decodes_callback_invoked_into_broadcast`).
4. Injects the proven `WRITE_COMPLETE_OK` 5-byte frame.
5. Asserts the emitted `OperationStatus.context.correlation_id`
equals the cid the write returned, that op_kind is Write, that
reference is the original tag string, and that
`pending_ops` is now empty (one-shot popped).
This closes the integration-test gap the user flagged. Live AVEVA
verification still falls under F49.
Workspace 823 → 824 tests; clippy + rustdoc clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Joseph Doherty
04c10babfb