import { assertWagonLoad } from './empty-container-wagon.util';

describe('assertWagonLoad', () => {
  it('accepts one 40ft or two 20ft per wagon', () => {
    expect(() =>
      assertWagonLoad(
        new Map([
          [1, ['40']],
          [2, ['20', '20']],
          [3, ['20']],
        ]),
      ),
    ).not.toThrow();
  });

  it('rejects a 40ft sharing a wagon', () => {
    expect(() => assertWagonLoad(new Map([[4, ['40', '20']]]))).toThrow(/Wagon 4/);
  });

  it('rejects three containers on a wagon', () => {
    expect(() => assertWagonLoad(new Map([[5, ['20', '20', '20']]]))).toThrow(/Wagon 5/);
  });
});