@Test
    void testNegativeWordsParsing2() {
        Item root = tester.assertParsed("+a -b", "+a -b", Query.Type.WEB);
        assertTrue(((NotItem) root).getItem(0).isProtected());
        assertTrue(((NotItem) root).getItem(1).isProtected());
    }
Testing terminators containing control characters in conjunction with those control characters
container-search/src/test/java/com/yahoo/prelude/query/parser/test/ParseTestCase.java