}
    }

    // Edge: cache size 0 means nothing is cached; release still zeroes argument
    @Test
    @DisplayName("Cache size 0: release zeroes but does not cache; getBuffer allocates new")
    void zeroSizedCacheDoesNotStore() {
        BufferCacheImpl impl = new BufferCacheImpl(0, 8);
        byte[] supplied = new byte[3];
        supplied[0] = 1;
        supplied[1] = 2;