jest.mock('../../../../prisma/prisma.service', () => ({
  PrismaService: class {},
}));
jest.mock('../../../../../generated/prisma/client', () => ({ Prisma: {} }));
import { PrismaService } from '../../../../prisma/prisma.service';
import { BankCardsRepository } from '../infrastructure/bank-cards.repository';
import { GetBankSummaryUseCase } from './get-bank-summary.use-case';

describe('bank card summary categories', () => {
  it('resolves category names and rejects an inconsistent category reference', async () => {
    const categories = jest
      .fn()
      .mockResolvedValue([{ id: 'food', name: 'Продукты' }]);
    const tx = {
      bankCardOperation: {
        findMany: jest.fn().mockResolvedValue([
          {
            kind: 'expense',
            categoryId: 'food',
            amountKopecks: 123n,
            date: '2026-09-13',
            originalExpense: null,
          },
        ]),
      },
      expenseCategory: { findMany: categories },
    };
    const service = new GetBankSummaryUseCase(
      new BankCardsRepository({
        $transaction: (run: (client: typeof tx) => unknown) => run(tx),
      } as unknown as PrismaService),
    );

    await expect(
      service.execute('user', { month: '2026-09' }),
    ).resolves.toMatchObject({
      categories: [
        {
          categoryId: 'food',
          categoryName: 'Продукты',
          net: { value: '1.23' },
        },
      ],
    });
    categories.mockResolvedValue([]);
    await expect(service.execute('user', { month: '2026-09' })).rejects.toThrow(
      'Bank operation category is missing',
    );
  });
});