| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed 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 libcore.java.util; |
| |
| import java.util.IntSummaryStatistics; |
| |
| public class IntSummaryStatisticsTest extends junit.framework.TestCase { |
| |
| private static final int data1[] = {2, -5, 7, -1, 1, 0, 100}; |
| private static final int data2[] = {1, 3, 2, 1, 7}; |
| |
| public void test_empty() { |
| IntSummaryStatistics iss = new IntSummaryStatistics(); |
| assertEquals(0, iss.getCount()); |
| assertEquals(0, iss.getSum()); |
| assertEquals(0.0d, iss.getAverage()); |
| assertEquals(Integer.MAX_VALUE, iss.getMin()); |
| assertEquals(Integer.MIN_VALUE, iss.getMax()); |
| } |
| |
| public void test_accept() { |
| IntSummaryStatistics iss = new IntSummaryStatistics(); |
| iss.accept(5); |
| assertEquals(1, iss.getCount()); |
| assertEquals(5, iss.getSum()); |
| iss.accept(10); |
| assertEquals(2, iss.getCount()); |
| assertEquals(15, iss.getSum()); |
| } |
| |
| public void test_combine() { |
| IntSummaryStatistics iss1 = getIntSummaryStatisticsData2(); |
| IntSummaryStatistics issCombined = getIntSummaryStatisticsData1(); |
| issCombined.combine(iss1); |
| |
| assertEquals(12, issCombined.getCount()); |
| assertEquals(118, issCombined.getSum()); |
| assertEquals(100, issCombined.getMax()); |
| assertEquals(-5, issCombined.getMin()); |
| assertEquals(9.833333d, issCombined.getAverage(), 1E-6); |
| } |
| |
| public void test_getCount() { |
| IntSummaryStatistics iss1 = getIntSummaryStatisticsData1(); |
| assertEquals(data1.length, iss1.getCount()); |
| } |
| |
| public void test_getSum() { |
| IntSummaryStatistics iss1 = getIntSummaryStatisticsData1(); |
| assertEquals(104, iss1.getSum()); |
| } |
| |
| public void test_getMin() { |
| IntSummaryStatistics iss1 = getIntSummaryStatisticsData1(); |
| assertEquals(-5, iss1.getMin()); |
| } |
| |
| public void test_getMax() { |
| IntSummaryStatistics iss1 = getIntSummaryStatisticsData1(); |
| assertEquals(100, iss1.getMax()); |
| } |
| |
| public void test_getAverage() { |
| IntSummaryStatistics iss1 = getIntSummaryStatisticsData1(); |
| assertEquals(14.857142, iss1.getAverage(), 1E-6); |
| } |
| |
| private static IntSummaryStatistics getIntSummaryStatisticsData1() { |
| IntSummaryStatistics iss = new IntSummaryStatistics(); |
| for (int value : data1) { |
| iss.accept(value); |
| } |
| return iss; |
| } |
| |
| private static IntSummaryStatistics getIntSummaryStatisticsData2() { |
| IntSummaryStatistics iss = new IntSummaryStatistics(); |
| for (int value : data2) { |
| iss.accept(value); |
| } |
| return iss; |
| } |
| } |