@Test
    void testDefaultIsUnionUriIndex() {
        IndexFacts indexFacts = createIndexFacts();
        assertTrue(indexFacts.newSession(new Query()).getIndex("d").isUriIndex());
        assertFalse(indexFacts.newSession(new Query()).getIndex("a").isUriIndex());
    }
Tests using synthetic index names for IndexFacts class.

@author Steinar Knutsen
container-search/src/test/java/com/yahoo/prelude/test/IndexFactsTestCase.java