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fastutil extends the Java Collections Framework by providing type-specific maps, sets, lists, and queues with a small memory footprint and fast access and insertion; it provides also big (64-bit) arrays, sets and lists, sorting algorithms, fast, practical I/O classes for binary and text files, and facilities for memory mapping large files. Note that if you have both this jar and fastutil-core.jar in your dependencies, fastutil-core.jar should be excluded.

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package it.unimi.dsi.fastutil.ints;

/*
 * Copyright (C) 2017 Sebastiano Vigna
 *
 * 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.
 */

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.util.Collections;

import org.junit.Test;

public class IntArrayListTest {

	@SuppressWarnings("unlikely-arg-type")
	@Test
	public void testEmptyListIsDifferentFromEmptySet() {
		assertFalse(IntLists.EMPTY_LIST.equals(IntSets.EMPTY_SET));
		assertFalse(IntSets.EMPTY_SET.equals(IntLists.EMPTY_LIST));
	}

	@SuppressWarnings("deprecation")
	@Test
	public void testNullInContains() {
		assertFalse(new IntArrayList().contains(null));
	}

	@Test
	public void testAddUsingIteratorToTheFirstPosition() {
		IntArrayList list = new IntArrayList();
		list.add(24);
		IntListIterator it = list.listIterator();
		it.add(42);
		assertTrue(it.hasNext());
		assertEquals(IntArrayList.wrap(new int[] { 42, 24 }), list);
	}

	@Test
	public void testRemoveAll() {
		IntArrayList l = IntArrayList.wrap(new int[] { 0, 1, 1, 2 });
		l.removeAll(IntSets.singleton(1));
		assertEquals(IntArrayList.wrap(new int[] { 0, 2 }), l);

		l = IntArrayList.wrap(new int[] { 0, 1, 1, 2 });
		l.removeAll(Collections.singleton(Integer.valueOf(1)));
		assertEquals(IntArrayList.wrap(new int[] { 0, 2 }), l);
	}
}