readLockC.lock();
    PotentialDeadlockException expected =
        assertThrows(PotentialDeadlockException.class, () -> readLockA.lock());
    checkMessage(
        expected, "ReadWriteC -> ReadWriteA", "LockB -> ReadWriteC", "ReadWriteA -> LockB");
  }

  public void testWriteLock_threeLockDeadLock() {
    // Establish an ordering from writeLockA -> writeLockB.
    writeLockA.lock();
    writeLockB.lock();