{"ast_node_type":"variable","tokens":[{"end":90,"kind":"keyword","start":0,"text":"if"}]}
    if let Some((t, (path, _))) = existing.iter().find(|&(t, _)| !tests.contains_key(t)) {
    let existing = existing_tests(&tests_dir, TestKind::Ok)?;
        panic!("Test `{t}` is deleted: {}", path.display());