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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.collections;
import org.junit.Before;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import static org.junit.Assert.*;
/**
* @author Tony Vaagenes
*/
public class CollectionUtilTest {
List<Integer> l1 = Arrays.asList(1, 2, 4, 5, 6, 7);
List<Integer> l2 = Arrays.asList(3, 4, 5, 6, 7);
@Before
public void shuffle() {
Collections.shuffle(l1);
Collections.shuffle(l2);
}
@Test
public void testMkString() {
assertEquals("1, 2, 3, 4",
CollectionUtil.mkString(Arrays.asList(1, 2, 3, 4), ", "));
}
@Test
public void testEqualContentsIgnoreOrder() {
List<Integer> l2Copy = new ArrayList<>();
l2Copy.addAll(l2);
shuffle();
assertTrue(CollectionUtil.equalContentsIgnoreOrder(
l2, l2Copy));
assertFalse(CollectionUtil.equalContentsIgnoreOrder(
l1, l2));
}
@Test
public void testSymmetricDifference() {
assertTrue(CollectionUtil.equalContentsIgnoreOrder(
Arrays.asList(1, 2, 3),
CollectionUtil.symmetricDifference(l1, l2)));
}
}
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