SortedTest.java

package com.annimon.stream.longstreamtests;

import com.annimon.stream.LongStream;
import com.annimon.stream.Objects;
import java.util.Comparator;
import org.junit.Test;
import static com.annimon.stream.test.hamcrest.LongStreamMatcher.assertElements;
import static com.annimon.stream.test.hamcrest.LongStreamMatcher.assertIsEmpty;
import static org.hamcrest.Matchers.arrayContaining;

public final class SortedTest {

    @Test
    public void testSorted() {
        LongStream.of(12, 32, 9, 22)
                .sorted()
                .custom(assertElements(arrayContaining(
                        9L, 12L, 22L, 32L
                )));

        LongStream.empty()
                .sorted()
                .custom(assertIsEmpty());
    }

    @Test
    public void testSortedWithComparator() {
        LongStream.of(12, 32, 9, 22)
                .sorted(new Comparator<Long>() {
                    @Override
                    public int compare(Long o1, Long o2) {
                        // reverse order
                        return Objects.compareLong(o2, o1);
                    }
                })
                .custom(assertElements(arrayContaining(
                        32L, 22L, 12L, 9L
                )));
    }
}