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EasyStreamTest

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Looly 2023-02-28 21:57:46 +08:00
parent 0dd2f8c92c
commit 82be78e2fd
1 changed files with 27 additions and 26 deletions
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53
hutool-core/src/test/java/cn/hutool/core/stream/EasyStreamTest.java
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@ -1,11 +1,12 @@
package cn.hutool.core.stream;
import static java.util.Collections.singletonList;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.lang.Opt;
import cn.hutool.core.map.MapUtil;
import cn.hutool.core.math.NumberUtil;
import org.junit.Assert;
import org.junit.Test;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.ArrayList;
@ -24,8 +25,8 @@ import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.junit.Assert;
import org.junit.Test;
import static java.util.Collections.singletonList;
/**
* @author VampireAchao
@ -453,21 +454,21 @@ public class EasyStreamTest {
@Test
public void testIntSumAndAvg() {
//测试int类型的总和
int sum = EasyStream.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10).sum(Integer::intValue);
final int sum = EasyStream.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10).sum(Integer::intValue);
Assert.assertEquals(55, sum);
//测试为空
List<Integer> integerList = new ArrayList<>();
int emptySum = EasyStream.of(integerList).sum(Integer::intValue);
final List<Integer> integerList = new ArrayList<>();
final int emptySum = EasyStream.of(integerList).sum(Integer::intValue);
Assert.assertEquals(0, emptySum);
//测试平均值
OptionalDouble avg = EasyStream.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10).avg(Integer::intValue);
final OptionalDouble avg = EasyStream.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10).avg(Integer::intValue);
Assert.assertTrue(avg.isPresent());
Assert.assertEquals(5.5, avg.getAsDouble(), 2);
//测试元素为空
OptionalDouble emptyAvg = EasyStream.of(integerList).avg(Integer::intValue);
final OptionalDouble emptyAvg = EasyStream.of(integerList).avg(Integer::intValue);
Assert.assertFalse(emptyAvg.isPresent());
}
@ -475,22 +476,22 @@ public class EasyStreamTest {
@Test
public void testDoubleSumAndAvg() {
//测试double类型的sum
double doubleSum = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10).sum(Double::doubleValue);
final double doubleSum = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10).sum(Double::doubleValue);
Assert.assertEquals(59.6, doubleSum, 2);
//测试double类型的sum 无元素double
List<Double> doubleList = new ArrayList<>();
double emptySum = EasyStream.of(doubleList).sum(Double::doubleValue);
final List<Double> doubleList = new ArrayList<>();
final double emptySum = EasyStream.of(doubleList).sum(Double::doubleValue);
Assert.assertEquals(0.0, emptySum, 2);
//测试double类型的avg
OptionalDouble doubleAvg = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10)
final OptionalDouble doubleAvg = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10)
.avg(Double::doubleValue);
Assert.assertTrue(doubleAvg.isPresent());
Assert.assertEquals(5.96, doubleAvg.getAsDouble(), 2);
//测试double类型的 空元素的avg
OptionalDouble emptyDoubleAvg = EasyStream.of(doubleList).avg(Double::doubleValue);
final OptionalDouble emptyDoubleAvg = EasyStream.of(doubleList).avg(Double::doubleValue);
Assert.assertFalse(emptyDoubleAvg.isPresent());
}
@ -498,21 +499,21 @@ public class EasyStreamTest {
@Test
public void testLongSumAndAvg() {
//测试long类型的sum
long sum = EasyStream.of(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L).sum(Long::longValue);
final long sum = EasyStream.of(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L).sum(Long::longValue);
Assert.assertEquals(55L, sum);
//测试long类型的空元素 sum
List<Long> longList = new ArrayList<>();
long emptySum = EasyStream.of(longList).sum(Long::longValue);
final List<Long> longList = new ArrayList<>();
final long emptySum = EasyStream.of(longList).sum(Long::longValue);
Assert.assertEquals(0L, emptySum);
//测试long类型的avg
OptionalDouble doubleAvg = EasyStream.of(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L).avg(Long::longValue);
final OptionalDouble doubleAvg = EasyStream.of(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L).avg(Long::longValue);
Assert.assertTrue(doubleAvg.isPresent());
Assert.assertEquals(5.5, doubleAvg.getAsDouble(), 2);
//测试long类型的avg 空元素
OptionalDouble emptyDoubleAvg = EasyStream.of(longList).avg(Long::longValue);
final OptionalDouble emptyDoubleAvg = EasyStream.of(longList).avg(Long::longValue);
Assert.assertFalse(emptyDoubleAvg.isPresent());
@ -521,35 +522,35 @@ public class EasyStreamTest {
@Test
public void testBigDecimalSumAndAvg() {
//测试bigDecimal的sum
BigDecimal sum = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10).map(NumberUtil::toBigDecimal)
final BigDecimal sum = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10).map(NumberUtil::toBigDecimal)
.sum(Function.identity());
Assert.assertEquals(NumberUtil.toBigDecimal(59.6), sum);
//测试bigDecimal的sum 空元素
List<BigDecimal> bigDecimalEmptyList = new ArrayList<>();
BigDecimal emptySum = EasyStream.of(bigDecimalEmptyList).sum(Function.identity());
final List<BigDecimal> bigDecimalEmptyList = new ArrayList<>();
final BigDecimal emptySum = EasyStream.of(bigDecimalEmptyList).sum(Function.identity());
Assert.assertEquals(BigDecimal.ZERO, emptySum);
//测试bigDecimal的avg全参
Opt<BigDecimal> bigDecimalAvgFullParam = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10)
final Opt<BigDecimal> bigDecimalAvgFullParam = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10)
.map(NumberUtil::toBigDecimal)
.avg(Function.identity(), 2, RoundingMode.HALF_UP);
Assert.assertEquals(NumberUtil.toBigDecimal(5.96), bigDecimalAvgFullParam.get());
//测试bigDecimal的avg单参
Opt<BigDecimal> bigDecimalAvgOneParam = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10)
final Opt<BigDecimal> bigDecimalAvgOneParam = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10)
.map(NumberUtil::toBigDecimal)
.avg(Function.identity());
Assert.assertEquals(NumberUtil.toBigDecimal(5.96), bigDecimalAvgOneParam.get());
//测试bigDecimal的avg双参
Opt<BigDecimal> bigDecimalAvgTwoParam = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10)
final Opt<BigDecimal> bigDecimalAvgTwoParam = EasyStream.of(1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10)
.map(NumberUtil::toBigDecimal)
.avg(Function.identity(), 2);
Assert.assertEquals(NumberUtil.toBigDecimal(5.96), bigDecimalAvgTwoParam.get());
//测试bigDecimal的avg 空元素
Opt<BigDecimal> emptyBigDecimalAvg = EasyStream.of(bigDecimalEmptyList)
final Opt<BigDecimal> emptyBigDecimalAvg = EasyStream.of(bigDecimalEmptyList)
.avg(Function.identity(), 2, RoundingMode.HALF_UP);
Assert.assertFalse(emptyBigDecimalAvg.isPresent());