const getParcelPickups = (parcels) => { return Promise.all( parcels.map((parcel) => { const [warehouse] = cacheContainer.warehousesByMerchantId.get(Number(parcel.merchantId)) || []; const pickupRegion = cacheContainer.pickupRegionsByGeoId.get(warehouse.geoId); return getPickupFromParcel({ warehouse, pickupRegion }); })) };

test('getParcelPickups', () => {
    const mockParcels = [
      { merchantId: 1 },
      { merchantId: 2 },
      { merchantId: 3 },
    ];
    const mockWarehouses = [
      { geoId: 1 },
      { geoId: 2 },
      { geoId: 3 },
    ];
    const mockPickupRegions = [
      { geoId: 1 },
      { geoId: 2 },
      { geoId: 3 },
    ];
    cacheContainer.warehousesByMerchantId = new Map([
      [1, [mockWarehouses[0]]],
      [2, [mockWarehouses[1]]],
      [3, [mockWarehouses[2]]],
    ]);
    cacheContainer.pickupRegionsByGeoId = new Map([
      [1, mockPickupRegions[0]],
      [2, mockPickupRegions[1]],
      [3, mockPickupRegions[2]],
    ]);
    const