| /* |
| * 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.camel.management; |
| |
| import org.apache.camel.management.mbean.LoadTriplet; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class LoadTripletTest extends Assert { |
| |
| @Test |
| public void testConstantUpdate() { |
| LoadTriplet t = new LoadTriplet(); |
| t.update(1); |
| assertEquals(1.0, t.getLoad1(), Math.ulp(1.0) * 5); |
| assertEquals(1.0, t.getLoad5(), Math.ulp(1.0) * 5); |
| assertEquals(1.0, t.getLoad15(), Math.ulp(1.0) * 5); |
| for (int i = 0; i < 100; i++) { |
| t.update(1); |
| } |
| assertEquals(1.0, t.getLoad1(), Math.ulp(1.0) * 5); |
| assertEquals(1.0, t.getLoad5(), Math.ulp(1.0) * 5); |
| assertEquals(1.0, t.getLoad15(), Math.ulp(1.0) * 5); |
| } |
| |
| @Test |
| public void testChargeDischarge() { |
| LoadTriplet t = new LoadTriplet(); |
| t.update(0); |
| double last = t.getLoad15(); |
| double lastDiff = Double.MAX_VALUE; |
| double diff; |
| for (int i = 0; i < 1000; i++) { |
| t.update(5); |
| diff = t.getLoad15() - last; |
| assertTrue(diff > 0.0); |
| assertTrue(diff < lastDiff); |
| lastDiff = diff; |
| last = t.getLoad15(); |
| } |
| lastDiff = -Double.MAX_VALUE; |
| for (int i = 0; i < 1000; i++) { |
| t.update(0); |
| diff = t.getLoad15() - last; |
| assertTrue(diff < 0.0); |
| assertTrue(String.format("%f is smaller than %f", diff, lastDiff), diff > lastDiff); |
| lastDiff = diff; |
| last = t.getLoad15(); |
| } |
| } |
| |
| } |