Function ensure_clean_state

tests/common/peripheral_finder.rs:65–81

Best-effort cleanup: disconnect any connected peripherals. This prevents state leakage between tests when running in a shared process (Android). The background scan is intentionally kept running to avoid Android scan throttling.

(adapter: &Adapter)

/// This prevents state leakage between tests when running in a shared process (Android).
/// The background scan is intentionally kept running to avoid Android scan throttling.
async fn ensure_clean_state(adapter: &Adapter) {
    // Use timeouts on all operations — a hung disconnect from a prior test
    // must not block subsequent tests forever.
    if let Ok(Ok(peripherals)) =
        tokio::time::timeout(Duration::from_secs(2), adapter.peripherals()).await
    {
        for p in peripherals {
            if let Ok(Ok(true)) =
                tokio::time::timeout(Duration::from_secs(1), p.is_connected()).await
            {
                let _ = tokio::time::timeout(Duration::from_secs(5), p.disconnect()).await;
            }
        }
    }
    // Give the BLE stack time to settle after disconnection.
    tokio::time::sleep(Duration::from_secs(2)).await;
}

/// Discover the test peripheral by name, connect to it, and discover its services.
///