| /* |
| * 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.util.bkd; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| import org.apache.lucene.index.PointValues.IntersectVisitor; |
| import org.apache.lucene.index.PointValues.Relation; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.store.IndexInput; |
| import org.apache.lucene.store.IndexOutput; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.apache.lucene.util.TestUtil; |
| |
| public class TestDocIdsWriter extends LuceneTestCase { |
| |
| public void testRandom() throws Exception { |
| int numIters = atLeast(100); |
| try (Directory dir = newDirectory()) { |
| for (int iter = 0; iter < numIters; ++iter) { |
| int[] docIDs = new int[random().nextInt(5000)]; |
| final int bpv = TestUtil.nextInt(random(), 1, 32); |
| for (int i = 0; i < docIDs.length; ++i) { |
| docIDs[i] = TestUtil.nextInt(random(), 0, (1 << bpv) - 1); |
| } |
| test(dir, docIDs); |
| } |
| } |
| } |
| |
| public void testSorted() throws Exception { |
| int numIters = atLeast(100); |
| try (Directory dir = newDirectory()) { |
| for (int iter = 0; iter < numIters; ++iter) { |
| int[] docIDs = new int[random().nextInt(5000)]; |
| final int bpv = TestUtil.nextInt(random(), 1, 32); |
| for (int i = 0; i < docIDs.length; ++i) { |
| docIDs[i] = TestUtil.nextInt(random(), 0, (1 << bpv) - 1); |
| } |
| Arrays.sort(docIDs); |
| test(dir, docIDs); |
| } |
| } |
| } |
| |
| private void test(Directory dir, int[] ints) throws Exception { |
| final long len; |
| try(IndexOutput out = dir.createOutput("tmp", IOContext.DEFAULT)) { |
| DocIdsWriter.writeDocIds(ints, 0, ints.length, out); |
| len = out.getFilePointer(); |
| if (random().nextBoolean()) { |
| out.writeLong(0); // garbage |
| } |
| } |
| try (IndexInput in = dir.openInput("tmp", IOContext.READONCE)) { |
| int[] read = new int[ints.length]; |
| DocIdsWriter.readInts(in, ints.length, read); |
| assertArrayEquals(ints, read); |
| assertEquals(len, in.getFilePointer()); |
| } |
| try (IndexInput in = dir.openInput("tmp", IOContext.READONCE)) { |
| int[] read = new int[ints.length]; |
| DocIdsWriter.readInts(in, ints.length, new IntersectVisitor() { |
| int i = 0; |
| @Override |
| public void visit(int docID) throws IOException { |
| read[i++] = docID; |
| } |
| |
| @Override |
| public void visit(int docID, byte[] packedValue) throws IOException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Relation compare(byte[] minPackedValue, byte[] maxPackedValue) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| }); |
| assertArrayEquals(ints, read); |
| assertEquals(len, in.getFilePointer()); |
| } |
| dir.deleteFile("tmp"); |
| } |
| |
| } |