@Test
    void testBlendingWithSortSpecAnd2Phase() {
        DocumentSourceSearcher docSource1 = new DocumentSourceSearcher();
        DocumentSourceSearcher docSource2 = new DocumentSourceSearcher();

        Query q = new Query("/search?query=banana+&sorting=%2Battributefoobar");
        Result r1 = new Result(q);
        Result r2 = new Result(q);

        r1.setTotalHitCount(3);
        Hit r1h1 = new Hit("http://host1.com/relevancy101", 101);
        r1h1.setField("attributefoobar", "3");
        Hit r1h2 = new Hit("http://host2.com/relevancy102", 102);
        r1h2.setField("attributefoobar", "6");
        Hit r1h3 = new Hit("http://host3.com/relevancy103", 103);
        r1h3.setField("attributefoobar", "2");
        r1.hits().add(r1h1);
        r1.hits().add(r1h2);
        r1.hits().add(r1h3);
        docSource1.addResult(q, r1);

        r2.setTotalHitCount(3);
        Hit r2h1 = new Hit("http://host1.com/relevancy201", 201);
        r2h1.setField("attributefoobar", "5");
        Hit r2h2 = new Hit("http://host2.com/relevancy202", 202);
        r2h2.setField("attributefoobar", "1");
        Hit r2h3 = new Hit("http://host3.com/relevancy203", 203);
        r2h3.setField("attributefoobar", "4");
        r2.hits().add(r2h1);
        r2.hits().add(r2h2);
        r2.hits().add(r2h3);
        docSource2.addResult(q, r2);

        BlendingSearcherWrapper blender = new BlendingSearcherWrapper();
        blender.addSource("chainedone", docSource1);
        blender.addSource("chainedtwo", docSource2);
        blender.initialize();
        q.setWindow(0, 10);
        Result br = new Execution(blender, Execution.Context.createContextStub()).search(q);
        assertEquals(202, ((int) br.hits().get(0).getRelevance().getScore()));
        assertEquals(103, ((int) br.hits().get(1).getRelevance().getScore()));
        assertEquals(101, ((int) br.hits().get(2).getRelevance().getScore()));
        assertEquals(203, ((int) br.hits().get(3).getRelevance().getScore()));
        assertEquals(201, ((int) br.hits().get(4).getRelevance().getScore()));
        assertEquals(102, ((int) br.hits().get(5).getRelevance().getScore()));
    }
Disabled because the document source searcher does not handle being asked for
document sumaries for hits it did not create (it will insert the wrong values).
But are we sure fsearch handles this case correctly?
container-search/src/test/java/com/yahoo/prelude/searcher/test/BlendingSearcherTestCase.java