Files
mizan/tests/afi/test_codegen_parity.py
Ryth Azhur 9900f8a36f Mizan IR: cut over to KDL, delete OpenAPI envelope
Replaces the transitional OpenAPI 3.0 + `x-mizan-*` extensions
substrate with the canonical Mizan IR as KDL, per docs/AFI_ARCHITECTURE.md:
"KDL is the contract; everything else (REST envelopes, OpenAPI
documents, framework idioms) is sediment around it."

End-to-end cutover. No transitional path left on main.

Forward direction:
  cores/mizan-python/src/mizan_core/ir.py
    build_ir() walks mizan_core.registry, introspects Pydantic
    models directly (no JSON-Schema indirection), and emits the
    Mizan IR document. The KDL grammar is locked in this file's
    module docstring.

Backends emit KDL:
  backends/mizan-fastapi/src/mizan_fastapi/ir.py
    `python -m mizan_fastapi.ir <module>` — CLI entry point.
  backends/mizan-django/.../management/commands/export_mizan_ir.py
    `manage.py export_mizan_ir` — Django mgmt command.

Codegen consumes KDL:
  protocol/mizan-codegen/Cargo.toml: + kdl = "6"
  protocol/mizan-codegen/src/ir.rs: NamedType { Struct/List/Enum/Alias }
    + TypeShape { Primitive/Ref/List/Optional/Enum/Union } sum types,
    replacing the JsonSchema sprawl. KDL parser walks the
    `kdl::KdlDocument` tree into typed Rust structs.
  protocol/mizan-codegen/src/fetch.rs: subprocess command switches
    to the new IR-export entry points.
  All emit modules (stage1 / react / python / rust / vue / svelte /
    channels) port their type-walkers from JsonSchema to the new
    sum types — case analysis collapses substantially.

Substrate-honesty wins beyond the moat closure:
  - `int | bool` multi-arm unions land as `TypeShape::Union` (was
    silently coerced to "string" before).
  - `<CamelName>Output = list[T]` returns emit as named alias
    types instead of struct-shaped wrappers, so consumer code
    `.map()` works directly on the type.
  - Pydantic field defaults flow through to `default` properties
    in KDL, then back to non-optional shape in every target.

Deleted:
  - backends/mizan-fastapi/src/mizan_fastapi/{cli,schema}.py
  - backends/mizan-django/.../export_mizan_schema.py
  - openapi-bearing half of mizan/export/__init__.py (edge
    manifest generator preserved — separate concern).
  - tests/afi/schema_normalizer.py
  - tests/fixtures/{afi_schema.json, channels_schema.json}
  - tests/fixtures/js_* baseline directories.

Verification:
  - 20 mizan-codegen unit tests green (IR deserialization,
    byte-equivalence parity across stage1/rust/python/react/vue/svelte
    against fresh KDL-driven baselines, channels structural).
  - tests/rust/run_wire_parity.py: 12/12 probes green driving
    the binary end-to-end through KDL.
  - Blazr studio-ui typechecks against the regenerated React client.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-17 19:14:47 -04:00

73 lines
2.0 KiB
Python

"""
AFI conformance — same @client fixture, same Mizan IR (KDL), both adapters.
Gates that mizan-django and mizan-fastapi emit byte-equivalent IR
for the same registered functions. If this passes, the codegen
produces identical TypeScript output regardless of backend
(codegen is deterministic over IR input).
Substrate-level gate, not e2e. Catches adapter symmetry problems —
type-introspection divergence, ordering non-determinism — without
running a real frontend or backend.
"""
from __future__ import annotations
import os
import subprocess
import sys
from pathlib import Path
import pytest
HERE = Path(__file__).parent
DJANGO_MANAGE = HERE / "django_app" / "manage.py"
def _fetch_django_ir() -> str:
"""Spawn Django's management command and parse stdout as KDL."""
result = subprocess.run(
[sys.executable, str(DJANGO_MANAGE), "export_mizan_ir"],
capture_output=True,
text=True,
check=False,
env={**os.environ, "PYTHONDONTWRITEBYTECODE": "1"},
)
if result.returncode != 0:
pytest.fail(
f"export_mizan_ir failed:\nstdout:\n{result.stdout}\nstderr:\n{result.stderr}",
)
return result.stdout
def _fetch_fastapi_ir() -> str:
"""Build the FastAPI app inline (fresh registry) and call build_ir()."""
sys.path.insert(0, str(HERE))
try:
from mizan_core.registry import clear_registry
from mizan_core.ir import build_ir
from fastapi_app import make_app
clear_registry()
make_app()
return build_ir()
finally:
sys.path.remove(str(HERE))
@pytest.fixture(scope="module")
def ir_pair() -> tuple[str, str]:
return _fetch_django_ir(), _fetch_fastapi_ir()
class IRParityTests:
"""The Mizan IR is the contract — both backends must emit the same KDL."""
def test_ir_bytes_match(self, ir_pair):
django, fastapi = ir_pair
assert django == fastapi, (
"Django and FastAPI emit divergent Mizan IR for the same "
"registered functions. Substrate gate is now red."
)