/** Verify the cache can put and replace a KV pair successfully. */
@Test
public void singlePutAndReplace() {
KVCache cache = new KVCache(1, 4);
cache.put("hello", "world");
assertEquals("world", cache.get("hello"));
cache.put("hello", "friend");
assertEquals("friend", cache.get("hello"));
System.out.println("Test1 Success");
}
/** Verify the xml creation works. */
@Test
public void xmlTest2() {
KVCache cache = new KVCache(2, 4);
cache.put("1", "one");
cache.put("2", "two");
cache.put("3", "three");
cache.put("4", "four");
cache.put("1", "ONE");
cache.get("2");
cache.get("4");
System.out.println(cache.toString());
System.out.println("Test6 Success");
}
/** Verify the cache can put and delete a KV pair successfully. */
@Test
public void singlePutAndDel() {
KVCache cache = new KVCache(1, 4);
cache.put("hello", "world");
assertEquals("world", cache.get("hello"));
cache.del("hello");
assertEquals(null, cache.get("hello"));
System.out.println("Test2 Success");
}
/** Verify the cache can change reference bit correctly. */
@Test
public void referenceTest() {
KVCache cache = new KVCache(1, 4);
// Get
cache.put("hello", "world");
assertEquals(0, cache.getReference("hello"));
assertEquals("world", cache.get("hello"));
assertEquals(1, cache.getReference("hello"));
// Put and replace
assertEquals(-1, cache.getReference("hi"));
cache.put("hi", "friend");
assertEquals(0, cache.getReference("hi"));
cache.put("hi", "buddy");
assertEquals("buddy", cache.get("hi"));
assertEquals(1, cache.getReference("hi"));
System.out.println("Test3 Success");
}
/** Verify the cache implements second chance correctly. */
@Test
public void secondChance() {
KVCache cache = new KVCache(1, 4);
cache.put("1", "one");
cache.put("2", "two");
cache.put("3", "three");
cache.put("4", "four");
cache.get("1");
cache.get("2");
cache.get("4");
cache.put("5", "five");
assertEquals(null, cache.get("3"));
assertEquals(0, cache.getReference("1"));
assertEquals(0, cache.getReference("2"));
assertEquals(0, cache.getReference("5"));
assertEquals(1, cache.getReference("4"));
System.out.println("Test4 Success");
}