/*
 * 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;

import com.gs.collections.api.RichIterable;
import com.gs.collections.api.multimap.Multimap;
import com.gs.collections.api.multimap.MutableMultimap;
import com.gs.collections.api.partition.PartitionIterable;
import com.gs.collections.impl.block.factory.IntegerPredicates;
import com.gs.collections.impl.block.factory.Predicates2;
import com.gs.collections.impl.factory.Lists;
import com.gs.collections.impl.lazy.LazyIterableAdapter;
import com.gs.collections.impl.list.mutable.FastList;
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.*;

public class SynchronizedRichIterableTest extends AbstractRichIterableTestCase
{
    @Override
    protected <T> RichIterable<T> newWith(T... littleElements)
    {
        return SynchronizedRichIterable.of(Lists.mutable.of(littleElements));
    }

    @Override
    @Test
    public void partition()
    {
        RichIterable<Integer> integers = this.newWith(-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
        PartitionIterable<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()
    {
        RichIterable<Integer> integers = this.newWith(-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
        PartitionIterable<Integer> result = integers.partitionWith(Predicates2.in(), FastList.newListWith(-2, 0, 2, 4, 6, 8));
        Assert.assertEquals(iList(-2, 0, 2, 4, 6, 8), result.getSelected());
        Assert.assertEquals(iList(-3, -1, 1, 3, 5, 7, 9), result.getRejected());
    }

    @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));
    }

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

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

    @Test
    public void asLazy()
    {
        RichIterable<Integer> integers = this.newWith(-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9).asLazy();
        Verify.assertInstanceOf(LazyIterableAdapter.class, integers);
        PartitionIterable<Integer> result = integers.partitionWith(Predicates2.in(), FastList.newListWith(-2, 0, 2, 4, 6, 8));
        Assert.assertEquals(iList(-2, 0, 2, 4, 6, 8), result.getSelected());
        Assert.assertEquals(iList(-3, -1, 1, 3, 5, 7, 9), result.getRejected());
    }

    @Test(expected = IllegalArgumentException.class)
    public void nullCheck()
    {
        SynchronizedRichIterable.of(null, null);
    }
}