@Test
public void getHighBoundary() {

    final Range.RangeBoundary highBoundary = Range.RangeBoundary.CLOSED;
    final RangeImpl rangeImpl = new RangeImpl(Range.RangeBoundary.OPEN, 10, 15, highBoundary);
    Assert.assertEquals(highBoundary, rangeImpl.getHighBoundary());
}