@Test
    void requireThatUpperAndLowerBoundGreaterThan0Works() {
        PredicateRangeTermExpander expander = new PredicateRangeTermExpander(10, 100, 9999);
        Iterator<String> expectedLabels = List.of(
                "key=140-149",
                "key=100-199",
                "key=0-999",
                "key=0-9999").iterator();
        expander.expand("key", 142, range -> assertEquals(PredicateHash.hash64(expectedLabels.next()), range),
                (edge, value) -> {
                    assertEquals(PredicateHash.hash64("key=140"), edge);
                    assertEquals(2, value);
                });
        assertFalse(expectedLabels.hasNext());
    }
@author <a href="mailto:magnarn@yahoo-inc.com">Magnar Nedland</a>
predicate-search/src/test/java/com/yahoo/search/predicate/index/PredicateRangeTermExpanderTest.java