/**
* 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 junit.framework.TestCase;
import org.apache.camel.management.mbean.LoadTriplet;
public class LoadTripletTest extends TestCase {
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);
}
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();
}
}
}