@Test public void testAddAndCollapseDistinctValues() { assertEquals(unboundedRange(NaN).addAndCollapseDistinctValues(unboundedRange(NaN)), unboundedRange(NaN)); assertEquals(unboundedRange(NaN).addAndCollapseDistinctValues(unboundedRange(1)), unboundedRange(NaN)); assertEquals(unboundedRange(1).addAndCollapseDistinctValues(unboundedRange(NaN)), unboundedRange(NaN)); assertEquals(unboundedRange(1).addAndCollapseDistinctValues(unboundedRange(2)), unboundedRange(2)); assertEquals(StatisticRange.empty().addAndCollapseDistinctValues(StatisticRange.empty()), StatisticRange.empty()); assertEquals(range(0, 1, 1).addAndCollapseDistinctValues(StatisticRange.empty()), range(0, 1, 1)); assertEquals(range(0, 1, 1).addAndCollapseDistinctValues(range(1, 2, 1)), range(0, 2, 1)); assertEquals(range(0, 3, 3).addAndCollapseDistinctValues(range(2, 6, 4)), range(0, 6, 6)); }