it('Should consider the field invalid (subfield with uppercase code), characters: true', () => {
          const field = {'tag': 'CAT', 'ind1': ' ', 'ind2': ' ', 'subfields': [{'code': 'A', 'value': 'foo'}, {'code': 'c', 'value': '20150121'}]};

          try {
            Utils.validateField(field, {characters: true});