import isBase64URLString from './isBase64URLString'; test('should return true when input is base64URLString', () => { const actual = isBase64URLString("U2ltcGxlV2ViQXV0aG4") expect(actual).toEqual(true); }); test('should return false when input is not base64URLString', () => { const actual = isBase64URLString("U2ltcGxlV2ViQXV0aG4+") expect(actual).toEqual(false); }); test('should return false when input is blank', () => { const actual = isBase64URLString("") expect(actual).toEqual(false); });