public synchronized void releaseReadLock() {
        status--;
    }
@Test
    public void releaseReadLockTest() {
        SimpleReadWriteLock simpleReadWriteLock = new SimpleReadWriteLock();
        simpleReadWriteLock.tryReadLock();
        simpleReadWriteLock.releaseReadLock();
        boolean result = simpleReadWriteLock.tryWriteLock();
        Assert.isTrue(result);
    }