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MultiReaderHashBagAsReadUntouchableTest.java
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MultiReaderHashBagAsReadUntouchableTest.java
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/*
* Copyright (c) 2015 Goldman Sachs.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompany this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package org.eclipse.collections.impl.bag.mutable;
import org.eclipse.collections.api.bag.MutableBag;
import org.eclipse.collections.api.set.MutableSet;
import org.eclipse.collections.impl.collection.mutable.UnmodifiableMutableCollectionTestCase;
import org.eclipse.collections.impl.factory.Sets;
import org.eclipse.collections.impl.map.mutable.UnifiedMap;
import org.junit.Assert;
import org.junit.Test;
public class MultiReaderHashBagAsReadUntouchableTest extends UnmodifiableMutableCollectionTestCase<Integer>
{
@Override
protected MutableBag<Integer> getCollection()
{
return MultiReaderHashBag.newBagWith(1, 1).asReadUntouchable();
}
@Test(expected = UnsupportedOperationException.class)
public void addOccurrences()
{
this.getCollection().addOccurrences(1, 1);
}
@Test(expected = UnsupportedOperationException.class)
public void removeOccurrences()
{
this.getCollection().removeOccurrences(1, 1);
}
@Test(expected = UnsupportedOperationException.class)
public void setOccurrences()
{
this.getCollection().setOccurrences(1, 1);
}
@Test
public void occurrencesOf()
{
Assert.assertEquals(2, this.getCollection().occurrencesOf(1));
Assert.assertEquals(0, this.getCollection().occurrencesOf(0));
}
@Test
public void sizeDistinct()
{
Assert.assertEquals(1, this.getCollection().sizeDistinct());
}
@Test
public void toMapOfItemToCount()
{
Assert.assertEquals(UnifiedMap.newWithKeysValues(1, 2), this.getCollection().toMapOfItemToCount());
}
@Test
public void toStringOfItemToCount()
{
Assert.assertEquals("{1=2}", this.getCollection().toStringOfItemToCount());
}
@Test
public void forEachWithOccurrences()
{
int[] sum = new int[1];
this.getCollection().forEachWithOccurrences((each, occurrences) -> {
if (occurrences > 1)
{
sum[0] += each * occurrences;
}
});
Assert.assertEquals(2, sum[0]);
}
@Test
public void selectUnique()
{
MutableBag<String> bag = MultiReaderHashBag.newBagWith("0", "1", "1", "1", "1", "2", "2", "2", "3", "3", "4", "5").asReadUntouchable();
MutableSet<String> expected = Sets.mutable.with("0", "4", "5");
MutableSet<String> actual = bag.selectUnique();
Assert.assertEquals(expected, actual);
}
}