@Test
    void testTokenIteratorAdd() {
        HitField hf = new HitField("boo", "hei paa deg");
        assertEquals(3, hf.getTokenizedContent().size());
        ListIterator<FieldPart> l = hf.tokenIterator();
        l.add(new StringFieldPart("a", true));
        l.next();
        l.next();
        l.add(new StringFieldPart("b", true));
        l.next();
        l.add(new StringFieldPart("c", true));
        assertEquals(false, l.hasNext());
        assertEquals("ahei paab degc", hf.getContent());
    }
Tests the FieldTokenIterator class

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