import { removeEmptyPairs } from '@/utils';
import { mockPair } from '../mocks/pair';

describe('removeEmptyPairs', () => {
  const pairsMock = [
    mockPair({
      token0: 'iq6ry-fiaaa-aaaak-qahmq-cai',
      token1: 'utozz-siaaa-aaaam-qaaxq-cai',
      reserve0: BigInt(0),
      reserve1: BigInt(0),
    }),
    mockPair({
      token0: 'aanaa-xaaaa-aaaah-aaeiq-cai',
      token1: 'n7obp-3aaaa-aaaap-aaaaq-cai',
      reserve0: BigInt(10000),
      reserve1: BigInt(10000),
    }),
  ];

  const pairListMock = {
    [pairsMock[0].token0]: {
      [pairsMock[0].token1]: pairsMock[0],
    },
    [pairsMock[0].token1]: {
      [pairsMock[0].token0]: pairsMock[0],
    },
    [pairsMock[1].token0]: {
      [pairsMock[1].token1]: pairsMock[1],
    },
    [pairsMock[1].token1]: {
      [pairsMock[1].token0]: pairsMock[1],
    },
  };

  test('should return only pairs with reserves', () => {
    const result = removeEmptyPairs(pairListMock);

    expect(result[pairsMock[0].token0][pairsMock[0].token1]).toBeUndefined();
    expect(result[pairsMock[0].token1][pairsMock[0].token0]).toBeUndefined();
    expect(result[pairsMock[1].token0][pairsMock[1].token1]).toBe(pairsMock[1]);
    expect(result[pairsMock[1].token1][pairsMock[1].token0]).toBe(pairsMock[1]);
  });
});