Files
mizan/protocol/mizan-codegen/tests/python_parity.rs

76 lines
2.2 KiB
Rust

//! Byte-equivalence test for the Python target against the JS baseline.
use std::collections::BTreeMap;
use std::path::PathBuf;
use mizan_codegen::config::{Config, SourceConfig};
use mizan_codegen::emit::{CodegenTarget, EmittedFile};
use mizan_codegen::emit::python::PythonClient;
use mizan_codegen::fetch::parse_ir_from_str;
fn load_ir() -> mizan_codegen::ir::MizanIR {
let path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("tests/fixtures/afi_ir.kdl");
parse_ir_from_str(&std::fs::read_to_string(&path).unwrap()).unwrap()
}
fn fixture_config() -> Config {
Config {
project_id: None,
output: PathBuf::from("/tmp"),
targets: vec!["python".to_string()],
source: SourceConfig { fastapi: None, django: None, rust: None, script: None },
rust_kernel: None,
rust_crate_name: None,
}
}
fn read_baseline(rel: &str) -> String {
let path = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
.join("tests/fixtures/baselines/python")
.join(rel);
std::fs::read_to_string(&path)
.unwrap_or_else(|e| panic!("read baseline {}: {e}", path.display()))
}
fn emit_index(files: &[EmittedFile]) -> BTreeMap<PathBuf, &str> {
files.iter().map(|f| (f.rel_path.clone(), f.content.as_str())).collect()
}
fn assert_byte_equal(rel: &str, files: &BTreeMap<PathBuf, &str>) {
let actual = files
.get(&PathBuf::from(rel))
.unwrap_or_else(|| panic!("Python target did not produce {rel}"));
let expected = read_baseline(rel);
if *actual != expected {
for (lineno, (a, b)) in actual.lines().zip(expected.lines()).enumerate() {
if a != b {
panic!(
"{rel} diverges at line {}:\n expected: {b:?}\n actual: {a:?}",
lineno + 1,
);
}
}
panic!(
"{rel} diverges in length: actual={} expected={}",
actual.len(), expected.len(),
);
}
}
#[test]
fn python_target_all_files_match_baseline() {
let ir = load_ir();
let files = PythonClient.emit(&ir, &fixture_config());
let index = emit_index(&files);
for rel in ["types.py", "client.py", "__init__.py"] {
assert_byte_equal(rel, &index);
}
}