Method push

async_simple/coro/test/ConditionVariableTest.cpp:256–262

TEST_F(ConditionVariableTest, testNotifyOneQueue) {
    struct Queue {
        void push(int i) {
            {
                std::unique_lock lk(mutex);
                q.push(i);
            }
            cv.notifyOne();
        }
        Lazy<> pop(int& i) {
            std::unique_lock lk(mutex);
            co_await cv.wait(mutex, [&]() { return !q.empty(); });