Function check_wait_for

tests/BS_thread_pool_test.cpp:1491–1510

* @brief Check that wait_for() works. */

 * @brief Check that wait_for() works.
 */
void check_wait_for()
{
    constexpr std::chrono::milliseconds long_sleep_time(250);
    constexpr std::chrono::milliseconds short_sleep_time(10);
    BS::thread_pool pool;
    logln("Checking that wait_for() works...");
    std::atomic<bool> done = false;
    pool.detach_task(
        [&done, long_sleep_time]
        {
            std::this_thread::sleep_for(long_sleep_time);
            done = true;
        });
    logln("Task that lasts ", long_sleep_time.count(), "ms submitted. Waiting for ", short_sleep_time.count(), "ms...");
    pool.wait_for(short_sleep_time);
    check(!done);
    logln("Waiting for ", long_sleep_time.count() * 2, "ms...");
    pool.wait_for(long_sleep_time * 2);
    check(done);
}

/**
 * @brief Check that wait_until() works.