| /** |
| * 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.ambari.metrics.core.timeline; |
| |
| import org.apache.hadoop.metrics2.sink.timeline.MetricHostAggregate; |
| import org.junit.Test; |
| |
| import static org.assertj.core.api.Assertions.assertThat; |
| |
| public class TestMetricHostAggregate { |
| |
| @Test |
| public void testCreateAggregate() throws Exception { |
| // given |
| MetricHostAggregate aggregate = createAggregate(3.0, 1.0, 2.0, 2); |
| |
| //then |
| assertThat(aggregate.getSum()).isEqualTo(3.0); |
| assertThat(aggregate.getMin()).isEqualTo(1.0); |
| assertThat(aggregate.getMax()).isEqualTo(2.0); |
| assertThat(aggregate.calculateAverage()).isEqualTo(3.0 / 2); |
| } |
| |
| @Test |
| public void testUpdateAggregates() throws Exception { |
| // given |
| MetricHostAggregate aggregate = createAggregate(3.0, 1.0, 2.0, 2); |
| |
| //when |
| aggregate.updateAggregates(createAggregate(8.0, 0.5, 7.5, 2)); |
| aggregate.updateAggregates(createAggregate(1.0, 1.0, 1.0, 1)); |
| |
| //then |
| assertThat(aggregate.getSum()).isEqualTo(12.0); |
| assertThat(aggregate.getMin()).isEqualTo(0.5); |
| assertThat(aggregate.getMax()).isEqualTo(7.5); |
| assertThat(aggregate.calculateAverage()).isEqualTo((3.0 + 8.0 + 1.0) / 5); |
| } |
| |
| static MetricHostAggregate createAggregate (Double sum, Double min, |
| Double max, Integer samplesCount) { |
| MetricHostAggregate aggregate = new MetricHostAggregate(); |
| aggregate.setSum(sum); |
| aggregate.setMax(max); |
| aggregate.setMin(min); |
| aggregate.setDeviation(0.0); |
| aggregate.setNumberOfSamples(samplesCount); |
| return aggregate; |
| } |
| } |