elenchus-solver 0.9.2

Forward-pass inference interpreter for elenchus: 3-valued Kleene evaluation of the Impossible/CNF clause IR into CONFLICT / WARNING / CONSISTENT results.
Documentation 
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//! A syntax error surfaces through `verify_source` as `CompileError::Parse`,
//! carrying the full diagnostics (rendered with the file label in the header).

use elenchus_solver::{CompileError, verify_source};

#[test]
fn syntax_error_propagates_as_parse_diagnostics() {
    let err = verify_source("demo.vrf", "FACT lonely\n").unwrap_err();
    match err {
        CompileError::Parse(diag) => {
            let shown = diag.render(None, None);
            assert!(
                shown.contains("RESULT: 1 syntax error in demo.vrf"),
                "shown = {shown}"
            );
            assert!(shown.contains("FACT expects an atom"), "shown = {shown}");
        }
        other => panic!("expected a Parse error, got {other:?}"),
    }
}