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.junit.jupiter.api.*;
23
24 class WeightedAverageTest extends TestBase {
25
26 @Test void a01_empty() {
27 var w = new WeightedAverage();
28 assertEquals(0f, w.getValue(), 0.01);
29 }
30
31 @Test void a02_basic() {
32 var w = new WeightedAverage();
33 w.add(0,100).add(1,1).add(1,2).add(1,3).add(0,100);
34 assertEquals(2f, w.getValue(), 0.01);
35 }
36
37 @Test void a03_basicWithNullValue() {
38 var w = new WeightedAverage();
39 w.add(1,1).add(1,null).add(1,3);
40 assertEquals(2f, w.getValue(), 0.01);
41 }
42
43 @Test void a04_differingWeights() {
44 var w = new WeightedAverage();
45 w.add(10,1).add(20,3);
46 assertEquals(2.33f, w.getValue(), 0.01);
47 }
48 }