70 lines
2.4 KiB
Java
70 lines
2.4 KiB
Java
package com.baeldung;
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import org.eclipse.collections.api.list.primitive.ImmutableIntList;
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import org.eclipse.collections.api.list.primitive.MutableLongList;
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import org.eclipse.collections.api.map.primitive.MutableIntIntMap;
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import org.eclipse.collections.api.set.primitive.MutableIntSet;
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import org.eclipse.collections.impl.factory.primitive.*;
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import org.eclipse.collections.impl.list.Interval;
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import org.eclipse.collections.impl.list.primitive.IntInterval;
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import org.eclipse.collections.impl.map.mutable.primitive.IntIntHashMap;
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import org.junit.Test;
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import java.util.stream.DoubleStream;
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import static org.junit.Assert.assertEquals;
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public class PrimitiveCollectionsUnitTest {
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@Test
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public void whenListOfLongHasOneTwoThree_thenSumIsSix() {
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MutableLongList longList = LongLists.mutable.of(1L, 2L, 3L);
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assertEquals(6, longList.sum());
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}
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@Test
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public void whenListOfIntHasOneTwoThree_thenMaxIsThree() {
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ImmutableIntList intList = IntLists.immutable.of(1, 2, 3);
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assertEquals(3, intList.max());
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}
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@Test
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public void whenConvertFromIterableToPrimitive_thenValuesAreEquals() {
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Iterable<Integer> iterable = Interval.oneTo(3);
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MutableIntSet intSet = IntSets.mutable.withAll(iterable);
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IntInterval intInterval = IntInterval.oneTo(3);
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assertEquals(intInterval.toSet(), intSet);
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}
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@Test
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public void testOperationsOnIntIntMap() {
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MutableIntIntMap map = new IntIntHashMap();
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assertEquals(5, map.addToValue(0, 5));
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assertEquals(5, map.get(0));
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assertEquals(3, map.getIfAbsentPut(1, 3));
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}
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@Test
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public void whenCreateDoubleStream_thenAverageIsThree() {
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DoubleStream doubleStream = DoubleLists
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.mutable.with(1.0, 2.0, 3.0, 4.0, 5.0)
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.primitiveStream();
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assertEquals(3, doubleStream.average().getAsDouble(), 0.001);
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}
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@Test
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public void whenCreateMapFromStream_thenValuesMustMatch() {
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Iterable<Integer> integers = Interval.oneTo(3);
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MutableIntIntMap map =
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IntIntMaps.mutable.from(
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integers,
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key -> key,
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value -> value * value);
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MutableIntIntMap expected = IntIntMaps.mutable.empty()
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.withKeyValue(1, 1)
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.withKeyValue(2, 4)
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.withKeyValue(3, 9);
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assertEquals(expected, map);
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}
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} |