* tests basic {@link IntBlockPool} functionality
*/
public class TestIntBlockPool extends LuceneTestCase {
public void testSingleWriterReader() {
Counter bytesUsed = Counter.newCounter();
IntBlockPool pool = new IntBlockPool(new ByteTrackingAllocator(bytesUsed));
for (int j = 0; j < 2; j++) {
IntBlockPool.SliceWriter writer = new IntBlockPool.SliceWriter(pool);
int start = writer.startNewSlice();
int num = atLeast(100);
for (int i = 0; i < num; i++) {
writer.writeInt(i);
}
int upto = writer.getCurrentOffset();
IntBlockPool.SliceReader reader = new IntBlockPool.SliceReader(pool);
reader.reset(start, upto);
for (int i = 0; i < num; i++) {
assertEquals(i, reader.readInt());
}
assertTrue(reader.endOfSlice());
if (random().nextBoolean()) {
pool.reset(true, false);
assertEquals(0, bytesUsed.get());
} else {
pool.reset(true, true);
assertEquals(IntBlockPool.INT_BLOCK_SIZE
* RamUsageEstimator.NUM_BYTES_INT, bytesUsed.get());
}
}
}