/*
* 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 opennlp.tools.util.eval;
import org.junit.Assert;
import org.junit.Test;
/**
* Tests for the {@link Mean} class.
*/
public class MeanTest {
@Test
public void testMeanCalculation() {
Mean a = new Mean();
a.add(1);
Assert.assertEquals(1, a.count());
Assert.assertEquals(1d, a.mean(), 0.00001d);
a.add(1);
Assert.assertEquals(2, a.count());
Assert.assertEquals(1d, a.mean(), 0.00001d);
a.toString();
Mean b = new Mean();
b.add(0.5);
Assert.assertEquals(1, b.count());
Assert.assertEquals(0.5d, b.mean(), 0.00001d);
b.add(2);
Assert.assertEquals(2, b.count());
Assert.assertEquals(1.25d, b.mean(), 0.00001d);
b.toString();
Mean c = new Mean();
Assert.assertEquals(0, c.count());
Assert.assertEquals(0d, c.mean(), 0.00001d);
c.toString();
}
}