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

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

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

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

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

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

  it('should convert "22" to "16"', () => {
    expect(sut.convert('22')).toEqual('16');
  });

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