@Test
    void testNegative3() {
        AndItem root = new AndItem();
        root.addItem(new WordItem("a"));
        CompositeItem embedded = new AndItem();
        embedded.addItem(new WordItem("bcd"));
        CompositeItem phrase = new PhraseItem();
        phrase.addItem(new WordItem("def"));
        phrase.addItem(new WordItem("ghi"));
        embedded.addItem(phrase);
        root.addItem(embedded);
        root.addItem(new WordItem("e"));
        assertEquals("AND a (AND bcd \"def ghi\") e",
                transformQuery(root));
    }
Check CollapsePhraseSearcher works and only is triggered when it
should.

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