it('Should consider the field invalid (non alpha-numeric/blank indicator), characters: false', () => {
        const field = {'tag': 'CAT', 'ind1': '#', 'ind2': ' ', 'subfields': [{'code': 'c', 'value': '20150121'}]};

        // eslint-disable-next-line no-unused-expressions
        expect(Utils.validateField(field, {characters: false})).not.to.throw;