Ryth Azhur
3aafec6dd4
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>
54 lines
1.8 KiB
Rust
54 lines
1.8 KiB
Rust
//! Emits the Rust client crate, drops a consumer into its `tests/`, and runs
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//! `cargo test` inside it. The consumer names every generated module path and
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//! calls every generated function, so the emitted crate has to compile against
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//! the real `mizan-rust` kernel before its serde round-trips are asserted.
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mod harness;
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use std::path::PathBuf;
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use mizan_codegen::config::{Config, RustKernelSpec};
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use mizan_codegen::emit::CodegenTarget;
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use mizan_codegen::emit::rust::RustCrate;
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fn crate_config() -> Config {
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let kernel = harness::manifest_dir().join("../../frontends/mizan-rust");
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assert!(
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kernel.join("Cargo.toml").is_file(),
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"the generated crate depends on the kernel at {}",
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kernel.display(),
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);
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Config {
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rust_kernel: Some(RustKernelSpec::Path { path: kernel.display().to_string() }),
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rust_crate_name: "fixture_client".to_string(),
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..harness::config_for("rust")
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}
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}
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/// Build artifacts live outside the scratch root so a rerun reuses the
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/// compiled kernel and its dependency tree instead of rebuilding them.
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fn shared_target_dir() -> PathBuf {
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harness::manifest_dir().join("target/toolchain-cargo")
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}
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#[test]
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fn generated_crate_compiles_and_its_tests_pass() {
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let root = harness::scratch_root("rust");
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let ir = harness::load_ir("afi_ir.kdl");
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harness::write_emitted(&root, &RustCrate.emit(&ir, &crate_config()));
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harness::copy_fixture("rust_driver.rs", &root.join("tests/driver.rs"));
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let cargo = harness::resolve_on_path("cargo");
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let target_dir = shared_target_dir();
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harness::run_tool(
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&cargo,
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&["test"],
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&root,
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&[("CARGO_TARGET_DIR", target_dir.as_path())],
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"the emitted Rust client crate does not build or its consumer tests fail",
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);
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}
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