assertEquals(1, result.length);
        assertEquals(SuggestItem.Kind.DOCUMENT, result[0]);
    }

    @Test
    public void test_concatKinds_noDuplicatesFromSecondArray() {
        SuggestItem.Kind[] kinds1 = { SuggestItem.Kind.QUERY };
        SuggestItem.Kind[] kinds2 = { SuggestItem.Kind.QUERY, SuggestItem.Kind.DOCUMENT };