| /* |
| * 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.iotdb.tsfile.file.metadata.statistics; |
| |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| |
| public class IntegerStatisticsTest { |
| |
| @Test |
| public void testUpdate() { |
| Statistics<Integer> intStats = new IntegerStatistics(); |
| intStats.updateStats(1); |
| assertFalse(intStats.isEmpty()); |
| intStats.updateStats(2); |
| assertFalse(intStats.isEmpty()); |
| assertEquals(2, (int) intStats.getMaxValue()); |
| assertEquals(1, (int) intStats.getMinValue()); |
| assertEquals(1, (int) intStats.getFirstValue()); |
| assertEquals(3, (int) intStats.getSumLongValue()); |
| assertEquals(2, (int) intStats.getLastValue()); |
| } |
| |
| @Test |
| public void testMerge() { |
| Statistics<Integer> intStats1 = new IntegerStatistics(); |
| intStats1.setStartTime(0); |
| intStats1.setEndTime(2); |
| Statistics<Integer> intStats2 = new IntegerStatistics(); |
| intStats2.setStartTime(3); |
| intStats2.setEndTime(5); |
| |
| intStats1.updateStats(1); |
| intStats1.updateStats(100); |
| |
| intStats2.updateStats(200); |
| |
| Statistics<Integer> intStats3 = new IntegerStatistics(); |
| intStats3.mergeStatistics(intStats1); |
| assertFalse(intStats3.isEmpty()); |
| assertEquals(100, (int) intStats3.getMaxValue()); |
| assertEquals(1, (int) intStats3.getMinValue()); |
| assertEquals(1, (int) intStats3.getFirstValue()); |
| assertEquals(1 + 100, (int) intStats3.getSumLongValue()); |
| assertEquals(100, (int) intStats3.getLastValue()); |
| |
| intStats3.mergeStatistics(intStats2); |
| assertEquals(200, (int) intStats3.getMaxValue()); |
| assertEquals(1, (int) intStats3.getMinValue()); |
| assertEquals(1, (int) intStats3.getFirstValue()); |
| assertEquals(101 + 200, (int) intStats3.getSumLongValue()); |
| assertEquals(200, (int) intStats3.getLastValue()); |
| |
| // Unseq merge |
| Statistics<Integer> intStats4 = new IntegerStatistics(); |
| intStats4.setStartTime(0); |
| intStats4.setEndTime(5); |
| Statistics<Integer> intStats5 = new IntegerStatistics(); |
| intStats5.setStartTime(1); |
| intStats5.setEndTime(4); |
| |
| intStats4.updateStats(11); |
| intStats4.updateStats(15); |
| |
| intStats5.updateStats(20); |
| |
| intStats3.mergeStatistics(intStats4); |
| assertEquals(11, (int) intStats3.getFirstValue()); |
| assertEquals(15, (int) intStats3.getLastValue()); |
| |
| intStats3.mergeStatistics(intStats5); |
| assertEquals(11, (int) intStats3.getFirstValue()); |
| assertEquals(15, (int) intStats3.getLastValue()); |
| } |
| } |