`ConfigFlow._async_handle_discovery_without_unique_id` is an `async def` in core
(verified: `inspect.iscoroutinefunction` is True) and core awaits it. t32 called
it without `await`, so the coroutine body never ran: no `already_configured`
abort when the handler already had entries, no
`DEFAULT_DISCOVERY_UNIQUE_ID` claim, no `already_in_progress` abort — HA's
discovery dedup was dead, Python warned "coroutine ... was never awaited", and
the host-equality loop that used to sit here was the only accidental dedup.
The call is awaited and the now-unreachable host loop is gone (the real helper
is stricter: any entry for the domain, or any in-flight flow). The harness
mirrors the real contract instead of a sync no-op:
* `entity_stublib`'s hub stub makes the helper a coroutine (a sync stub would
turn the production `await` into a TypeError);
* `test_standalone_setup`'s stub models the real semantics — a coroutine raising
`DiscoveryDedupAbortError` (core raises AbortFlow), driven by the shared
holder's entry list and in-progress list — and its tests now assert all three
outcomes: awaited-and-proceeds (counter + claimed discovery unique id),
`already_configured` when entries exist, `already_in_progress` when another
flow runs. A fourth test collects the un-awaited-coroutine warning, and the
prefill test in the UX suite asserts the awaited counter.
Red proof: with the pre-fix config_flow.py the repo-owned sweep reports
`config_flow.py:425: missing-await: self._async_handle_discovery_without_unique_id()`.
Verified: 289 passed, 2 skipped (D3 stage); ruff clean.
F-A (HIGH): _user_schema_dict re-declared vol.Optional(CONF_ADB_HOST) /
CONF_PROTOCOL_HOST inside `if "host" in defaults:` — a no-op, because
voluptuous keys compare by field name and the first (defaultless) key object
survives. The discovered address therefore never reached the form, and the
user submitted a blank host. The host keys are now declared WITH default=host
(_host_field_key), so a discovery-driven user step arrives pre-filled.
F-A2: a discovery-driven user step says the address is known
("{discovery_note}Discovered Shield at <host> — its address is already filled
in below. ") through description_placeholders, and the no_state_source
re-render keeps the prefill instead of rebuilding a blank schema.
F-D: the ADB port is declared with default=DEFAULT_ADB_PORT (5555), and a YAML
seed's port hint is carried into the form instead of being flattened to 5555.
The seed host now feeds _seed_host (same prefill, no discovery claim).
Reproduce-through-test: tests/voluptuous_mirror.py mirrors the real
voluptuous.Marker key contract (hash/eq by field name, default=UNDEFINED when
omitted), because voluptuous is not installed in either CI variant and the old
bare-key stubs could not tell a schema WITH a default from one without. The
pre-t33 discovery assertion only checked the stored attribute and stayed green
while the form rendered blank; it now reads the schema keys and fails on the
pre-fix code (8 tests reproduced red locally).
Verified: uvx --with pytest-asyncio pytest tests -q → 242 passed, 1 skipped;
uvx ruff check custom_components tests → clean.
James Mackay