1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.juneau.utils;
18
19 import static org.junit.jupiter.api.Assertions.*;
20
21 import org.apache.juneau.*;
22 import org.apache.juneau.commons.lang.*;
23 import org.junit.jupiter.api.*;
24
25 class WeightedAverageTest extends TestBase {
26
27 @Test void a01_empty() {
28 var w = new WeightedAverage();
29 assertEquals(0f, w.getValue(), 0.01);
30 }
31
32 @Test void a02_basic() {
33 var w = new WeightedAverage();
34 w.add(0,100).add(1,1).add(1,2).add(1,3).add(0,100);
35 assertEquals(2f, w.getValue(), 0.01);
36 }
37
38 @Test void a03_basicWithNullValue() {
39 var w = new WeightedAverage();
40 w.add(1,1).add(1,null).add(1,3);
41 assertEquals(2f, w.getValue(), 0.01);
42 }
43
44 @Test void a04_differingWeights() {
45 var w = new WeightedAverage();
46 w.add(10,1).add(20,3);
47 assertEquals(2.33f, w.getValue(), 0.01);
48 }
49 }