| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.lucene.index; |
| |
| import java.util.Random; |
| |
| import org.apache.lucene.util.ByteBlockPool; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.apache.lucene.util.RecyclingByteBlockAllocator; |
| |
| public class TestByteSlices extends LuceneTestCase { |
| |
| public void testBasic() throws Throwable { |
| Random random = random(); |
| ByteBlockPool pool = new ByteBlockPool(new RecyclingByteBlockAllocator(ByteBlockPool.BYTE_BLOCK_SIZE, random().nextInt(100))); |
| |
| final int NUM_STREAM = atLeast(random, 100); |
| |
| ByteSliceWriter writer = new ByteSliceWriter(pool); |
| |
| int[] starts = new int[NUM_STREAM]; |
| int[] uptos = new int[NUM_STREAM]; |
| int[] counters = new int[NUM_STREAM]; |
| |
| ByteSliceReader reader = new ByteSliceReader(); |
| |
| for(int ti=0;ti<100;ti++) { |
| |
| for(int stream=0;stream<NUM_STREAM;stream++) { |
| starts[stream] = -1; |
| counters[stream] = 0; |
| } |
| |
| int num = atLeast(random, 3000); |
| for (int iter = 0; iter < num; iter++) { |
| int stream; |
| if (random.nextBoolean()) { |
| stream = random.nextInt(3); |
| } else { |
| stream = random.nextInt(NUM_STREAM); |
| } |
| |
| if (VERBOSE) { |
| System.out.println("write stream=" + stream); |
| } |
| |
| if (starts[stream] == -1) { |
| final int spot = pool.newSlice(ByteBlockPool.FIRST_LEVEL_SIZE); |
| starts[stream] = uptos[stream] = spot + pool.byteOffset; |
| if (VERBOSE) { |
| System.out.println(" init to " + starts[stream]); |
| } |
| } |
| |
| writer.init(uptos[stream]); |
| int numValue; |
| if (random.nextInt(10) == 3) { |
| numValue = random.nextInt(100); |
| } else if (random.nextInt(5) == 3) { |
| numValue = random.nextInt(3); |
| } else { |
| numValue = random.nextInt(20); |
| } |
| |
| for(int j=0;j<numValue;j++) { |
| if (VERBOSE) { |
| System.out.println(" write " + (counters[stream]+j)); |
| } |
| // write some large (incl. negative) ints: |
| writer.writeVInt(random.nextInt()); |
| writer.writeVInt(counters[stream]+j); |
| } |
| counters[stream] += numValue; |
| uptos[stream] = writer.getAddress(); |
| if (VERBOSE) |
| System.out.println(" addr now " + uptos[stream]); |
| } |
| |
| for(int stream=0;stream<NUM_STREAM;stream++) { |
| if (VERBOSE) |
| System.out.println(" stream=" + stream + " count=" + counters[stream]); |
| |
| if (starts[stream] != -1 && starts[stream] != uptos[stream]) { |
| reader.init(pool, starts[stream], uptos[stream]); |
| for(int j=0;j<counters[stream];j++) { |
| reader.readVInt(); |
| assertEquals(j, reader.readVInt()); |
| } |
| } |
| } |
| |
| pool.reset(); |
| } |
| } |
| } |