deepseek-tui 0.8.2

Terminal UI for DeepSeek
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//! Shared test-only helpers.

use std::sync::{Mutex, MutexGuard, OnceLock};

fn env_lock() -> &'static Mutex<()> {
    static LOCK: OnceLock<Mutex<()>> = OnceLock::new();
    LOCK.get_or_init(|| Mutex::new(()))
}

/// Acquire the process-wide env-var mutex.
///
/// If a prior test panicked while holding the lock, recover the guard instead
/// of cascading failures across unrelated tests.
pub(crate) fn lock_test_env() -> MutexGuard<'static, ()> {
    match env_lock().lock() {
        Ok(guard) => guard,
        Err(poisoned) => poisoned.into_inner(),
    }
}