assertNull(cache.put("h", "#h"));
assertEquals(8, cache.size());
assertTrue(cache.containsKey("a"));
assertTrue(cache.containsKey("b"));
assertTrue(cache.containsKey("c"));
assertTrue(cache.containsKey("d"));
assertTrue(cache.containsKey("e"));
assertTrue(cache.containsKey("f"));
assertTrue(cache.containsKey("g"));
assertTrue(cache.containsKey("h"));