Function assert_no_duplicates

tests/integration/references.rs:109–127

Helper to assert no duplicate locations exist in the results.

(results: &[tower_lsp::lsp_types::Location], label: &str)

/// Helper to assert no duplicate locations exist in the results.
fn assert_no_duplicates(results: &[tower_lsp::lsp_types::Location], label: &str) {
    let mut seen = std::collections::HashSet::new();
    for loc in results {
        let key = format!(
            "{}:{}:{}:{}:{}",
            loc.uri,
            loc.range.start.line,
            loc.range.start.character,
            loc.range.end.line,
            loc.range.end.character,
        );
        assert!(
            seen.insert(key.clone()),
            "Duplicate reference found ({}): {}",
            label,
            key
        );
    }
}

// ─── Class reference tests ──────────────────────────────────────────────────