RangeTest.java

package com.annimon.stream.streamtests;

import com.annimon.stream.Stream;
import org.junit.Test;
import static com.annimon.stream.test.hamcrest.StreamMatcher.assertElements;
import static org.hamcrest.Matchers.contains;
import static org.junit.Assert.assertEquals;

public final class RangeTest {

    @Test
    public void testStreamRange() {
        Stream.range(0, 5)
                .custom(assertElements(contains(
                      0, 1, 2, 3, 4
                )));
    }

    @Test
    public void testStreamRangeOnMaxValues() {
        long count = Stream.range(Integer.MAX_VALUE - 10, Integer.MAX_VALUE).count();
        assertEquals(10L, count);
    }

    @Test
    public void testStreamRangeOnMaxLongValues() {
        long count = Stream.range(Long.MAX_VALUE - 10, Long.MAX_VALUE).count();
        assertEquals(10L, count);
    }

    @Test
    public void testStreamRangeClosed() {
        Stream.rangeClosed(0, 5)
                .custom(assertElements(contains(
                      0, 1, 2, 3, 4, 5
                )));
    }

    @Test
    public void testStreamRangeClosedOnMaxValues() {
        long count = Stream.rangeClosed(Integer.MAX_VALUE - 10, Integer.MAX_VALUE).count();
        assertEquals(11L, count);
    }

    @Test
    public void testStreamRangeClosedOnMaxLongValues() {
        long count = Stream.rangeClosed(Long.MAX_VALUE - 10, Long.MAX_VALUE).count();
        assertEquals(11L, count);
    }
}