Adopt FastStream 0.7.6

[lesnik512]

What broke

FastStream 0.7.6 made address a required field of SubscriberSpec and PublisherSpec, made channel_labels abstract, replaced the private ASGI try-it-out registry with a TestBroker.__init_subclass__(broker=...) hook, narrowed dependencies to Sequence, and turned __aiter__ back into a plain def.

AsyncAPI generation raises TypeError: SubscriberSpec.__init__() missing 1 required positional argument: 'address' without the first of those. install locks with --upgrade and uv.lock is gitignored, so this is not a future problem: every CI run since 0.7.6 released resolves into it.

faststream~=0.7 was never the range this package supports — it admits 0.8 as well. The floor moves to 0.7.6 (the hook below does not exist before it, so an older resolve fails at import rather than subtly) and the cap to <0.8.

Changes

• Spec addresses. The subscriber trades its name override for channel_labels and passes address=; the publisher gains an address property and passes it through.
• Test-broker registration. _test_broker_registry.py is deleted along with the try/except wrapping it in __init__.py. _get_broker_registry no longer exists, so the monkeypatch had already stopped registering TestStompBroker — the bare except Exception hid that, and nothing tested it. The declarative hook replaces it. Binding EnterType at the same time picks up the 0.7.1 TestBroker typing fix, so the __aenter__ cast override goes away, and create_publisher_fake_subscriber becomes an instance method to match the abstract base.
• Narrowings. dependencies to Sequence across registrator/router/broker; __aiter__ to a plain def.
• Tests. test_asyncapi_schema asserted only that generation did not raise, which is part of how this shipped; it now asserts the channel keys and addresses. Two new tests cover title-named channels and the registration the monkeypatch never had.
• test-lowest job. Resolves --resolution lowest-direct. Every existing job tests the top of the declared range, so the floors ship unexercised — that is the gap this PR is fixing. The dev harness needed a floor of its own first: an unbounded asgi-lifespan resolves to 0.0.1, whose sdist does not build.

Behaviour change

Dropping the subscriber's name override in favour of the base's _channel_key means title now names the channel, not just the operation. It is public and documented, and every built-in broker already treats it this way. The publisher follows the same rule for symmetry — that half is optional and easy to drop if you would rather keep {address}:Publisher unconditionally.

Channel keys are unchanged for anyone not passing a title.

Verification

All three new tests fail on the pre-fix tree and pass after. just lint, just check-types (52 files), just test-fast (419 passed), just test against the Artemis and Classic containers (478 passed, 1 skipped), and just test-lowest on 3.11 at the floors (419 passed, faststream resolved to 0.7.6).

[vrslev]

Топ!