pokemon-inventory/apps/api/tests/application/sale-service.test.js

import assert from "node:assert/strict";
import test from "node:test";

import { createSaleService } from "../../src/modules/sales/services/sale-service.js";

function validInput(overrides = {}) {
  return {
    sellerId: "seller-1",
    inventoryItemId: "inventory-1",
    saleDate: "2026-09-09",
    soldPriceMinor: 2499,
    costBasisMinor: 1200,
    ...overrides,
  };
}

test("creates a sale through the repository with validated money values", async () => {
  let received;
  const service = createSaleService({
    saleRepository: {
      async createForInventoryItem(input) {
        received = input;
        return {
          status: "CREATED",
          sale: {
            id: "sale-1",
            soldPriceMinor: 2499,
            platformFeesMinor: 100,
            paymentProcessingFeesMinor: 0,
            shippingCostMinor: 0,
            taxesMinor: 0,
            otherFeesMinor: 0,
          },
          saleItem: { costBasisMinor: 1200 },
        };
      },
    },
  });

  assert.deepEqual(await service.create(validInput()), {
    status: "CREATED",
    sale: {
      id: "sale-1",
      soldPriceMinor: 2499,
      platformFeesMinor: 100,
      paymentProcessingFeesMinor: 0,
      shippingCostMinor: 0,
      taxesMinor: 0,
      otherFeesMinor: 0,
    },
    saleItem: { costBasisMinor: 1200 },
    netProceedsMinor: 2399,
    profitMinor: 1199,
  });
  assert.equal(received.sale.sellerId, "seller-1");
  assert.equal(received.sale.soldPriceMinor, 2499);
  assert.equal(received.costBasisMinor, 1200);
});

test("lists seller sales with derived net proceeds and profit", async () => {
  const service = createSaleService({
    saleRepository: {
      async listBySellerId(sellerId) {
        assert.equal(sellerId, "seller-1");
        return [
          {
            sale: { soldPriceMinor: 3000, shippingCostMinor: 200 },
            saleItem: { costBasisMinor: 1500 },
            inventoryItem: { id: "inventory-1", status: "SOLD" },
          },
        ];
      },
    },
  });

  const [sale] = await service.list({ sellerId: "seller-1" });
  assert.equal(sale.netProceedsMinor, 2800);
  assert.equal(sale.profitMinor, 1300);
});

test("voids an owned sale with a required reason", async () => {
  let received;
  const service = createSaleService({
    saleRepository: {
      async voidForSeller(input) {
        received = input;
        return {
          status: "VOIDED",
          sale: { id: "sale-1", soldPriceMinor: 3000 },
          saleItem: { costBasisMinor: 1500 },
          inventoryItem: { id: "inventory-1", status: "ACTIVE" },
        };
      },
    },
  });

  const result = await service.void({
    saleId: "sale-1",
    sellerId: "seller-1",
    actorUserId: "user-1",
    reason: " Duplicate sale ",
  });

  assert.equal(received.reason, "Duplicate sale");
  assert.equal(result.inventoryItem.status, "ACTIVE");
  await assert.rejects(
    () =>
      service.void({
        saleId: "sale-1",
        sellerId: "seller-1",
        actorUserId: "user-1",
        reason: "x",
      }),
    (error) =>
      error.code === "SALE_VOID_REASON_REQUIRED" && error.statusCode === 400,
  );
});

test("creates one sale containing multiple inventory items", async () => {
  let received;
  const service = createSaleService({
    saleRepository: {
      async createForInventoryItems(input) {
        received = input;
        return {
          status: "CREATED",
          sale: { id: "sale-2", soldPriceMinor: 3000 },
          saleItems: input.items,
          saleItem: input.items[0],
          inventoryItems: input.items.map(({ inventoryItemId }) => ({
            id: inventoryItemId,
            status: "SOLD",
          })),
          inventoryItem: { id: input.items[0].inventoryItemId, status: "SOLD" },
        };
      },
    },
  });

  const result = await service.create({
    sellerId: "seller-1",
    saleDate: "2026-09-09",
    items: [
      {
        inventoryItemId: "inventory-1",
        soldPriceMinor: 1200,
        costBasisMinor: 500,
      },
      {
        inventoryItemId: "inventory-2",
        soldPriceMinor: 1800,
        costBasisMinor: 700,
      },
    ],
  });

  assert.equal(received.sale.soldPriceMinor, 3000);
  assert.equal(received.items.length, 2);
  assert.equal(result.profitMinor, 1800);
});

test("maps missing and already-sold inventory to application errors", async () => {
  for (const result of [
    { status: "NOT_FOUND", code: "INVENTORY_NOT_FOUND", statusCode: 404 },
    {
      status: "NOT_ACTIVE",
      code: "INVENTORY_NOT_AVAILABLE_FOR_SALE",
      statusCode: 409,
    },
  ]) {
    const service = createSaleService({
      saleRepository: {
        async createForInventoryItem() {
          return result;
        },
      },
    });

    await assert.rejects(
      () => service.create(validInput()),
      (error) =>
        error.code === result.code && error.statusCode === result.statusCode,
    );
  }
});