SynchronizedMutableCollectionTest.java

/*
 * Copyright 2014 Goldman Sachs.
 *
 * 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 com.gs.collections.impl.collection.mutable;

import com.gs.collections.api.RichIterable;
import com.gs.collections.api.collection.MutableCollection;
import com.gs.collections.api.multimap.Multimap;
import com.gs.collections.api.multimap.MutableMultimap;
import com.gs.collections.api.partition.PartitionMutableCollection;
import com.gs.collections.impl.block.factory.IntegerPredicates;
import com.gs.collections.impl.block.factory.Predicates2;
import com.gs.collections.impl.block.function.NegativeIntervalFunction;
import com.gs.collections.impl.list.Interval;
import com.gs.collections.impl.list.mutable.FastList;
import com.gs.collections.impl.list.mutable.SynchronizedMutableList;
import com.gs.collections.impl.multimap.list.FastListMultimap;
import com.gs.collections.impl.test.Verify;
import org.junit.Assert;
import org.junit.Test;

import static com.gs.collections.impl.factory.Iterables.*;

/**
 * JUnit test for {@link SynchronizedMutableCollection}.
 */
public class SynchronizedMutableCollectionTest extends AbstractSynchronizedCollectionTestCase
{
    @Override
    protected <T> MutableCollection<T> newWith(T... littleElements)
    {
        return new SynchronizedMutableCollection<>(FastList.newListWith(littleElements));
    }

    @Override
    @Test
    public void newEmpty()
    {
        super.newEmpty();

        Verify.assertInstanceOf(SynchronizedMutableList.class, this.newWith().newEmpty());
    }

    @Override
    public void equalsAndHashCode()
    {
        Assert.assertNotEquals(this.newWith(), this.newWith());
    }

    @Override
    @Test
    public void groupBy()
    {
        RichIterable<Integer> list = this.newWith(1, 2, 3, 4, 5, 6, 7);
        Multimap<Boolean, Integer> multimap = list.groupBy(object -> IntegerPredicates.isOdd().accept(object));

        Assert.assertEquals(FastList.newListWith(1, 3, 5, 7), multimap.get(Boolean.TRUE));
        Assert.assertEquals(FastList.newListWith(2, 4, 6), multimap.get(Boolean.FALSE));
    }

    @Override
    @Test
    public void groupByEach()
    {
        RichIterable<Integer> underTest = this.newWith(1, 2, 3, 4, 5, 6, 7);
        MutableMultimap<Integer, Integer> expected = FastListMultimap.newMultimap();
        for (int i = 1; i < 8; i++)
        {
            expected.putAll(-i, Interval.fromTo(i, 7));
        }

        Multimap<Integer, Integer> actual =
                underTest.groupByEach(new NegativeIntervalFunction());
        Assert.assertEquals(expected, actual);

        Multimap<Integer, Integer> actualWithTarget =
                underTest.groupByEach(new NegativeIntervalFunction(), FastListMultimap.<Integer, Integer>newMultimap());
        Assert.assertEquals(expected, actualWithTarget);
    }

    @Override
    @Test
    public void asSynchronized()
    {
        Verify.assertInstanceOf(SynchronizedMutableCollection.class, this.newWith().asSynchronized());
    }

    @Override
    @Test
    public void asUnmodifiable()
    {
        Verify.assertInstanceOf(UnmodifiableMutableCollection.class, this.newWith().asUnmodifiable());
    }

    @Override
    @Test
    public void partition()
    {
        MutableCollection<Integer> integers = this.newWith(-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
        PartitionMutableCollection<Integer> result = integers.partition(IntegerPredicates.isEven());
        Assert.assertEquals(iList(-2, 0, 2, 4, 6, 8), result.getSelected());
        Assert.assertEquals(iList(-3, -1, 1, 3, 5, 7, 9), result.getRejected());
    }

    @Override
    @Test
    public void partitionWith()
    {
        MutableCollection<Integer> integers = this.newWith(-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
        PartitionMutableCollection<Integer> result = integers.partitionWith(Predicates2.in(), integers.select(IntegerPredicates.isEven()));
        Assert.assertEquals(iList(-2, 0, 2, 4, 6, 8), result.getSelected());
        Assert.assertEquals(iList(-3, -1, 1, 3, 5, 7, 9), result.getRejected());
    }

    @Override
    @Test
    public void with()
    {
        MutableCollection<Integer> coll = this.newWith(1, 2, 3);
        MutableCollection<Integer> collWith = coll.with(4);
        Assert.assertSame(coll, collWith);
        Assert.assertEquals(this.newWith(1, 2, 3, 4).toList(), collWith.toList());
    }

    @Override
    @Test
    public void withAll()
    {
        MutableCollection<Integer> coll = this.newWith(1, 2, 3);
        MutableCollection<Integer> collWith = coll.withAll(FastList.newListWith(4, 5));
        Assert.assertSame(coll, collWith);
        Assert.assertEquals(this.newWith(1, 2, 3, 4, 5).toList(), collWith.toList());
    }

    @Override
    @Test
    public void without()
    {
        MutableCollection<Integer> coll = this.newWith(1, 2, 3);
        MutableCollection<Integer> collWithout = coll.without(2);
        Assert.assertSame(coll, collWithout);
        MutableCollection<Integer> expectedSet = this.newWith(1, 3);
        Assert.assertEquals(expectedSet.toList(), collWithout.toList());
        Assert.assertEquals(expectedSet.toList(), collWithout.without(4).toList());
    }

    @Override
    @Test
    public void withoutAll()
    {
        MutableCollection<Integer> coll = this.newWith(1, 2, 3, 4, 5);
        MutableCollection<Integer> collWithout = coll.withoutAll(FastList.newListWith(2, 4));
        Assert.assertSame(coll, collWithout);
        MutableCollection<Integer> expectedSet = this.newWith(1, 3, 5);
        Assert.assertEquals(expectedSet.toList(), collWithout.toList());
        Assert.assertEquals(expectedSet.toList(), collWithout.withoutAll(FastList.newListWith(2, 4)).toList());
    }
}