import {DecToHexConverter} from './dec-to-hex-converter'; describe('DecToHexConverter', () => { it('should create an instance', () => { expect(new DecToHexConverter()).toBeTruthy(); }); it('should have the id "dectohex"', () => { expect(new DecToHexConverter().getId()).toEqual('dectohex'); }); it('should convert "22" to "16"', () => { expect(new DecToHexConverter().convert('22')).toEqual('16'); }); it('should raise an exception on invalid input', () => { expect(() => new DecToHexConverter().convert('foo bar')).toThrowError('The input seems not to be a valid integer.'); }); });