assertNotNull(result);
        assertTrue("Empty query should produce MatchAllQuery", result instanceof MatchAllQueryBuilder);
    }

    @Test
    public void test_buildQuery_nullQuery() {
        QueryBuilder result = request.buildQuery(null, Collections.emptyList());
        assertNotNull(result);
        assertTrue("Null query should produce MatchAllQuery", result instanceof MatchAllQueryBuilder);

Shinsuke Sugaya <******@****.***> 1773442886 +0900