//! pd.2/pd.3 (`prelude-decouple` milestone): pin the canonical
//! identity of the parsed prelude as a literal hex hash. Updates
//! intentionally on prelude-content changes (record the why in the
//! per-iter journal); accidental drift trips immediately.
//!
//! pd.2 also carried a `prelude_ail_and_json_parse_to_identical_module`
//! cross-form-identity preflight that compared `parse(prelude.ail)`
//! against `serde_json::from_str(prelude.ail.json)`. The preflight
//! discharged its purpose at pd.2 close (PASSED at hash
//! `3abe0d3fa3c11c99`) and was retired in pd.3 alongside the
//! `prelude.ail.json` file.

use ailang_core::workspace::module_hash;
use ailang_surface::parse_prelude;

#[test]
fn prelude_parse_yields_canonical_hash() {
    let m = parse_prelude();
    let h = module_hash(&m);
    // The expected hex is captured at pd.2-iter close (Step 5 of this task).
    // It updates intentionally on prelude-content changes; record the why
    // in the per-iter journal entry.
    assert_eq!(
        h, "3abe0d3fa3c11c99",  // captured at pd.2 iter close
        "prelude module hash drifted; if intentional, capture the new \
         hex below + record the why in the per-iter journal."
    );
}