Files
Ryth Azhur 3aafec6dd4 A channel's message slots are named from the client, on every backend
The IR called them react-message and django-message, so a FastAPI channel had
to declare a DjangoMessage. They are client-message and server-message now,
and the direction words hold wherever a channel is declared: Params /
ClientMessage / ServerMessage, with mizan-core deriving <Pascal>Params and
friends so no backend names a type itself. Django's ReactChannel and
FastAPI's ReactChannel are both Channel.

mizan-fastapi never registered a channels extension, so build_ir() emitted no
channel at all and every payload type was invisible to codegen. It registers
one now. RegistryExtension is an ABC requiring all(), which is what the IR
reads — an extension that cannot enumerate its registrations no longer exists.

The gate that should have caught the rename could not: tests/afi registered no
channel because mizan-rust had no channel registry to register one in, so a
five-package rename of the wire contract passed byte-parity without a channel
byte crossing it. mizan-rust grows ChannelSlotKind, a CHANNELS slice, a
#[mizan::channel] macro, and KDL emission whose wire_to_pascal matches Python's
split; the AFI fixture now carries a channel with every slot and one with a
single slot, so all three backends prove the contract byte for byte.

MizanChannel held three Option<String> beside three has_*() predicates and
unwrapped them with defaults; it holds an ordered slot vector, so an absent
slot is absent rather than defaulted. The channels target emitted a React
hooks file that a stage1-only consumer could not compile — react emits that
now. The codegen's parity tests byte-compared emitted source against baselines
without ever compiling it: they compile the generated crate and run its tests,
import the generated Python package and call every method, and typecheck each
TypeScript target against a consumer.

Also fixed at source: app_visitor printed its import diagnostic to stdout, the
stream export_mizan_ir writes KDL to, so a failed import silently corrupted the
IR; the apps root was hardcoded to "apps"; _default_literal crashed build_ir on
any non-JSON-serializable field default; Django and mizan-core derived Pascal
names two different ways, disagreeing on every dotted channel name.

ir.py builds a document and renders templates/ir/document.kdl.j2 rather than
appending KDL strings with hand-tracked indentation, and named types resolve to
a fixed point — a model reachable only through a union branch was referenced by
a ref that no type block ever defined.

The rest is the write-gate's own classifiers run over the standing tree:
relative imports, silent swallows, Protocol contracts that should be ABCs,
emitters hand-rendering target source, catch-all arms over closed enums, and
comments narrating the project rather than the code.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-27 14:03:19 -04:00

74 lines
2.4 KiB
Python

"""Runs every generated client method against the recording kernel stub."""
from mizan_client import MizanClient
from mizan_client.client import UserContextData
from mizan_client.types import (
EchoInput,
EchoOutput,
FindUserInput,
FindUserOutput,
OrderOutput,
RenameUserInput,
RenameUserOutput,
UpdateProfileInput,
UpdateProfileOutput,
UserProfileOutput,
WhoamiOutput,
)
client = MizanClient("http://127.0.0.1:9/api/mizan")
kernel = client._inner
kernel.reply = {"message": "hi"}
echoed = client.call_echo(EchoInput(text="hello"))
assert isinstance(echoed, EchoOutput)
assert echoed.message == "hi"
assert kernel.calls[-1] == ("echo", {"text": "hello"})
kernel.reply = {"email": "ryth@example.com", "authenticated": True}
identity = client.call_whoami()
assert isinstance(identity, WhoamiOutput)
assert identity.authenticated is True
assert kernel.calls[-1] == ("whoami", {})
kernel.reply = {"user_id": 1, "name": "ryth"}
found = client.call_find_user(FindUserInput(user_id=1))
assert isinstance(found, FindUserOutput)
assert found.name == "ryth"
assert kernel.calls[-1] == ("find_user", {"user_id": 1})
kernel.reply = None
assert client.call_find_user(FindUserInput(user_id=2)) is None
kernel.reply = {"user_id": 1, "name": "renamed"}
renamed = client.call_rename_user(RenameUserInput(user_id=1, name="renamed"))
assert isinstance(renamed, RenameUserOutput)
assert renamed.name == "renamed"
kernel.reply = {"ok": True}
updated = client.call_update_profile(UpdateProfileInput(user_id=1, name="renamed"))
assert isinstance(updated, UpdateProfileOutput)
assert updated.ok is True
kernel.reply = {
"user_orders": [{"id": 7, "user_id": 1, "total": 42}],
"user_profile": {"user_id": 1, "name": "ryth"},
}
bundle = client.fetch_user_context(1)
assert isinstance(bundle, UserContextData)
assert isinstance(bundle.user_profile, UserProfileOutput)
assert isinstance(bundle.user_orders[0], OrderOutput)
assert bundle.user_orders[0].total == 42
assert kernel.calls[-1] == ("user", {"user_id": 1})
received: list[dict] = []
subscription = client.subscribe_user_context(1, received.append)
assert subscription.name == "user"
assert subscription.params == {"user_id": 1}
client.invalidate("user")
client.invalidate_scoped("user", {"user_id": 1})
assert kernel.invalidated == [("user", None), ("user", {"user_id": 1})]
print("generated python client exercised")