@Test
public void testAsMap() {
final RingBuffer<Integer> ring = new RingBufferSimple<Integer>(10);
assertEquals(ring.length(), 10);
ring.setHead(100, 100);
for (int k = 101; k < 110; k++) {
ring.set(k, k);
}
ring.set(102, null);
ring.set(107, null);
assertEquals(ring.count(), 8);
final Map<Integer, Integer> map = ring.asMap();
assertEquals(map.size(), ring.count());
// SortedMap<Integer, Integer> map1 = new TreeMap<Integer,
// Integer>(map);
for (int k = 100; k < 110; k++) {
final Integer ringItem = ring.get(k);
final Integer mapItem = map.get(k);
assertEquals(ringItem, mapItem);
}
}
@Test
public void testAsList() {
final RingBuffer<Integer> ring = new RingBufferSimple<Integer>(10);
assertEquals(ring.length(), 10);
ring.setHead(100, 100);
for (int k = 100; k < 110; k++) {
ring.set(k, k);
}
ring.set(102, null);
ring.set(107, null);
assertEquals(ring.count(), 8);
final List<Integer> list = ring.asList();
assertEquals(list.size(), ring.count());
int index = 0;
for (int k = 100; k < 110; k++) {
final Integer ringItem = ring.get(k);
if (ringItem == null) {
continue;
}
final Integer listItem = list.get(index++);
assertEquals(ringItem, listItem);
}
}
@Test
public void testAsArray() {
final RingBuffer<Integer> ring = new RingBufferSimple<Integer>(10);
assertEquals(ring.length(), 10);
ring.setHead(100, 100);
for (int k = 100; k < 110; k++) {
ring.set(k, k);
}
ring.set(102, null);
ring.set(107, null);
assertEquals(ring.count(), 8);
final Integer[] clone1 = ring.asArray(Integer.class);
final Integer[] clone2 = ring.asArray(Integer.class);
assertFalse(clone1 == clone2);
assertTrue(Arrays.equals(clone1, clone2));
for (int k = 0; k < 10; k++) {
assertEquals(ring.get(100 + k), clone1[k]);
assertEquals(ring.get(100 + k), clone2[k]);
}
}
@Test
public void testHead() {
final RingBuffer<Integer> ring = new RingBufferSimple<Integer>(10);
assertEquals(ring.length(), 10);
ring.setHead(100, 100);
assertEquals(ring.count(), 1);
assertEquals(ring.get(100), (Integer) 100);
for (int k = 101; k < 110; k++) {
assertEquals(ring.get(k), null);
}
for (int k = 100; k < 110; k++) {
ring.set(k, k);
}
assertEquals(ring.count(), 10);
for (int k = 100; k < 110; k++) {
assertEquals(ring.get(k), (Integer) k);
}
ring.setHead(105, 205);
assertEquals(ring.count(), 5);
assertEquals(ring.head(), 105);
assertEquals(ring.tail(), 114);
assertEquals(ring.get(105), (Integer) 205);
for (int k = 106; k < 110; k++) {
assertEquals(ring.get(k), (Integer) k);
}
for (int k = 110; k < 115; k++) {
assertEquals(ring.get(k), (Integer) null);
}
ring.set(114, 114);
assertEquals(ring.count(), 6);
assertEquals(ring.get(114), (Integer) 114);
}
@Test
public void testyTail() {
final RingBuffer<Integer> ring = new RingBufferSimple<Integer>(10);
assertEquals(ring.length(), 10);
ring.setTail(109, 109);
assertEquals(ring.count(), 1);
assertEquals(ring.get(109), (Integer) 109);
for (int k = 100; k < 109; k++) {
assertEquals(ring.get(k), null);
}
for (int k = 100; k < 110; k++) {
ring.set(k, k);
}
assertEquals(ring.count(), 10);
for (int k = 100; k < 110; k++) {
assertEquals(ring.get(k), (Integer) k);
}
ring.setTail(104, 204);
assertEquals(ring.count(), 5);
assertEquals(ring.head(), 95);
assertEquals(ring.tail(), 104);
assertEquals(ring.get(104), (Integer) 204);
for (int k = 100; k < 104; k++) {
assertEquals(ring.get(k), (Integer) k);
}
for (int k = 95; k < 100; k++) {
assertEquals(ring.get(k), (Integer) null);
}
ring.set(95, 95);
assertEquals(ring.get(95), (Integer) 95);
assertEquals(ring.count(), 6);
}
@Test
public void testRingArray1() {
final RingBuffer<Integer> ring = new RingBufferSimple<Integer>(10);
int ringMemSize;
ringMemSize = JavaSize.of(ring);
// System.err.println("ring mem size=" + ringMemSize);
assertEquals(ringMemSize, 72);
//
int basis;
for (int k = 0; k < 10; k++) {
ring.set(k, new Integer(k));
}
basis = ring.head();
// System.err.println("ring basis=" + basis);
assertEquals(basis, 0);
//
for (int k = 0; k < 10; k++) {
assertEquals(ring.get(k), (Integer) k);
}
//
assertEquals(ring.head(), 0);
assertEquals(ring.tail(), 9);
assertEquals(ring.get(4), (Integer) 4);
for (int k = 5; k < 10; k++) {
// System.err.println("ring k=" + k);
assertEquals(ring.get(k), (Integer) (k));
}
//
}
@Test(expected = ArrayIndexOutOfBoundsException.class)
public void testSetException2() {
final RingBuffer<Integer> ring = new RingBufferSimple<Integer>(10);
ring.setHead(100, 100);
ring.set(110, 110);
}