Function ensure_parse_errors

alpm-repo-db/tests/parse_errors.rs:16–48

(#[files("tests/parse_errors/desc/*.desc")] case: PathBuf)

    /// and the file's contents as description.
    #[rstest]
    fn ensure_parse_errors(#[files("tests/parse_errors/desc/*.desc")] case: PathBuf) -> TestResult {
        let input = read_to_string(&case)?;
        let name = case
            .file_stem()
            .and_then(|s| s.to_str())
            .unwrap_or("unknown_case");

        // Try both V1 and V2 constructors, as syntax errors should fail on either.
        let res_v1 = RepoDescFileV1::from_str(&input);
        let res_v2 = RepoDescFileV2::from_str(&input);

        // ensure at least one parser fails
        if res_v1.is_ok() || res_v2.is_ok() {
            unreachable!("parser unexpectedly succeeded");
        }

        let error = res_v1
            .err()
            .map(|e| e.to_string())
            .or_else(|| res_v2.err().map(|e| e.to_string()))
            .unwrap_or_else(|| "unknown parser failure".to_string());

        let input_clone = input.clone();
        insta::with_settings!({
            description => input_clone,
            snapshot_path => "parse_errors/desc/snapshots",
            prepend_module_to_snapshot => false,
        }, {
            assert_snapshot!(name, error);
        });

        Ok(())
    }
}

mod files {