swap_for_bundle_products_spec.rb

    context "with different shipping preferences" do
      let(:shipment1) { build(:shipment, shipping_preference: "parcel", products: [product_a]) }
      let(:shipment2) { build(:shipment, shipping_preference: "courier", products: [product_b]) }

      it "does not swap for the bundling product" do
        expect(shipments_out).to match_array(shipments_in)
        expect(products_skus_in_shipments(shipments_out)).to match_array(
          [
            [product_a.sku],
            [product_b.sku],
          ]
        )
      end
    end