@Test
    void lookup_search_chains_for_document1() throws Exception {
        List<ResolveResult> searchChains = resolve("document1");
        assertEquals(2, searchChains.size());
        assertTrue(searchChainIds(searchChains).containsAll(List.of(cluster1, cluster2)));
    }
Test for SourceRefResolver.

@author Tony Vaagenes
container-search/src/test/java/com/yahoo/search/federation/sourceref/SourceRefResolverTestCase.java