| /* |
| * 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 FloatStatisticsTest { |
| |
| private static final float maxError = 0.0001f; |
| |
| @Test |
| public void testUpdate() { |
| Statistics<Float> floatStats = new FloatStatistics(); |
| floatStats.updateStats(1.34f); |
| assertFalse(floatStats.isEmpty()); |
| floatStats.updateStats(2.32f); |
| assertFalse(floatStats.isEmpty()); |
| assertEquals(2.32f, (double) floatStats.getMaxValue(), maxError); |
| assertEquals(1.34f, (double) floatStats.getMinValue(), maxError); |
| assertEquals(2.32f + 1.34f, (double) floatStats.getSumDoubleValue(), maxError); |
| assertEquals(1.34f, (double) floatStats.getFirstValue(), maxError); |
| assertEquals(2.32f, (double) floatStats.getLastValue(), maxError); |
| } |
| |
| @Test |
| public void testMerge() { |
| Statistics<Float> floatStats1 = new FloatStatistics(); |
| floatStats1.setStartTime(0); |
| floatStats1.setEndTime(2); |
| Statistics<Float> floatStats2 = new FloatStatistics(); |
| floatStats2.setStartTime(3); |
| floatStats2.setEndTime(5); |
| |
| floatStats1.updateStats(1.34f); |
| floatStats1.updateStats(100.13453f); |
| |
| floatStats2.updateStats(200.435f); |
| |
| Statistics<Float> floatStats3 = new FloatStatistics(); |
| floatStats3.mergeStatistics(floatStats1); |
| assertFalse(floatStats3.isEmpty()); |
| assertEquals(100.13453f, floatStats3.getMaxValue(), maxError); |
| assertEquals(1.34f, floatStats3.getMinValue(), maxError); |
| assertEquals(100.13453f + 1.34f, (float) floatStats3.getSumDoubleValue(), maxError); |
| assertEquals(1.34f, floatStats3.getFirstValue(), maxError); |
| assertEquals(100.13453f, floatStats3.getLastValue(), maxError); |
| |
| floatStats3.mergeStatistics(floatStats2); |
| assertEquals(200.435f, floatStats3.getMaxValue(), maxError); |
| assertEquals(1.34f, floatStats3.getMinValue(), maxError); |
| assertEquals(100.13453f + 1.34f + 200.435f, (float) floatStats3.getSumDoubleValue(), maxError); |
| assertEquals(1.34f, floatStats3.getFirstValue(), maxError); |
| assertEquals(200.435f, floatStats3.getLastValue(), maxError); |
| |
| // Unseq merge |
| Statistics<Float> floatStats4 = new FloatStatistics(); |
| floatStats4.setStartTime(0); |
| floatStats4.setEndTime(5); |
| Statistics<Float> floatStats5 = new FloatStatistics(); |
| floatStats5.setStartTime(1); |
| floatStats5.setEndTime(4); |
| |
| floatStats4.updateStats(122.34f); |
| floatStats4.updateStats(125.34f); |
| floatStats5.updateStats(111.1f); |
| |
| floatStats3.mergeStatistics(floatStats4); |
| assertEquals(122.34f, floatStats3.getFirstValue(), maxError); |
| assertEquals(125.34f, floatStats3.getLastValue(), maxError); |
| |
| floatStats3.mergeStatistics(floatStats5); |
| assertEquals(122.34f, floatStats3.getFirstValue(), maxError); |
| assertEquals(125.34f, floatStats3.getLastValue(), maxError); |
| } |
| } |