| /* |
| * 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.solr.util; |
| |
| import org.apache.solr.SolrTestCase; |
| |
| import java.util.Arrays; |
| |
| public class PrimUtilsTest extends SolrTestCase { |
| |
| public void testSort() { |
| int maxSize = 100; |
| int maxVal = 100; |
| int[] a = new int[maxSize]; |
| int[] b = new int[maxSize]; |
| |
| PrimUtils.IntComparator comparator = new PrimUtils.IntComparator() { |
| @Override |
| public int compare(int a, int b) { |
| return b - a; // sort in reverse |
| } |
| }; |
| |
| for (int iter=0; iter<100; iter++) { |
| int start = random().nextInt(maxSize+1); |
| int end = start==maxSize ? maxSize : start + random().nextInt(maxSize-start); |
| for (int i=start; i<end; i++) { |
| a[i] = b[i] = random().nextInt(maxVal); |
| } |
| PrimUtils.sort(start, end, a, comparator); |
| Arrays.sort(b, start, end); |
| for (int i=start; i<end; i++) { |
| assertEquals(a[i], b[end-(i-start+1)]); |
| } |
| } |
| } |
| |
| public void testLongPriorityQueue() { |
| int maxSize = 100; |
| long[] a = new long[maxSize]; |
| long[] discards = new long[maxSize]; |
| |
| for (int iter=0; iter<100; iter++) { |
| int discardCount = 0; |
| int startSize = random().nextInt(maxSize) + 1; |
| int endSize = startSize==maxSize ? maxSize : startSize + random().nextInt(maxSize-startSize); |
| int adds = random().nextInt(maxSize+1); |
| // System.out.println("startSize=" + startSize + " endSize=" + endSize + " adds="+adds); |
| LongPriorityQueue pq = new LongPriorityQueue(startSize, endSize, Long.MIN_VALUE); |
| |
| for (int i=0; i<adds; i++) { |
| long v = random().nextLong(); |
| a[i] = v; |
| long out = pq.insertWithOverflow(v); |
| if (i < endSize) { |
| assertEquals(out, Long.MIN_VALUE); |
| } else { |
| discards[discardCount++] = out; |
| } |
| } |
| assertEquals(Math.min(adds,endSize), pq.size()); |
| assertEquals(adds, pq.size() + discardCount); |
| |
| Arrays.sort(a, 0, adds); |
| Arrays.sort(discards, 0, discardCount); |
| for (int i=0; i<discardCount; i++) { |
| assertEquals(a[i], discards[i]); |
| } |
| |
| for (int i=discardCount; i<adds; i++) { |
| assertEquals(a[i], pq.pop()); |
| } |
| |
| assertEquals(0, pq.size()); |
| } |
| } |
| |
| } |