import {HexToDecConverter} from './hex-to-dec-converter';

describe('HexToDecConverter', () => {
  let sut: HexToDecConverter;

  beforeEach(() => sut = new HexToDecConverter());

  it('should create an instance', () => {
    expect(sut).toBeTruthy();
  });

  it('should have a display name', () => {
    expect(sut.getDisplayname()).toBeTruthy();
  });

  it('should have the id "hextodec"', () => {
    expect(sut.getId()).toEqual('hextodec');
  });

  it('should convert "ab" to "171"', () => {
    expect(sut.convert('ab')).toEqual('171');
  });

  it('should raise an exception on invalid input', () => {
    expect(() => sut.convert('foo bar')).toThrowError('The input seems not to be a valid hexadecimal number.');
  });
});