backend/test/bonds.e2e-spec.ts

import {
  INestApplication,
  ConflictException,
  NotFoundException,
  ServiceUnavailableException,
} from '@nestjs/common';
import { JwtService } from '@nestjs/jwt';
import { Test } from '@nestjs/testing';
import request from 'supertest';
import type { Server } from 'node:http';
import { AppModule } from '../src/app.module';
import { configureApp } from '../src/main';
import { BondService } from '../src/tbank/bond.service';

const uid = 'e6123145-9665-43e0-8413-cd61b8aa9b13';
describe('Bond HTTP contract', () => {
  let app: INestApplication<Server>;
  const bonds = {
    getByTicker: jest.fn(),
    get: jest.fn(),
    search: jest.fn(),
    candles: jest.fn(),
    metrics: jest.fn(),
  };
  const token = new JwtService().sign(
    { sub: 'bond-reader', type: 'access' },
    { secret: process.env.JWT_SECRET },
  );
  beforeAll(async () => {
    const module = await Test.createTestingModule({ imports: [AppModule] })
      .overrideProvider(BondService)
      .useValue(bonds)
      .compile();
    app = module.createNestApplication();
    configureApp(app);
    await app.init();
  });
  beforeEach(() => {
    jest.clearAllMocks();
    bonds.get.mockResolvedValue({ instrumentUid: uid, name: 'Test' });
    bonds.search.mockResolvedValue([]);
    bonds.getByTicker.mockResolvedValue({
      instrumentUid: uid,
      slug: 'SU26238RMFS4',
    });
  });
  afterAll(() => app.close());
  it('requires authentication before invoking the use case', async () => {
    await request(app.getHttpServer()).get(`/api/v1/bonds/${uid}`).expect(401);
    expect(bonds.get).not.toHaveBeenCalled();
  });
  it.each([
    '/bonds/not-a-uid',
    '/bonds/not-a-uid/metrics',
    '/bonds/by-ticker/%20',
    '/bonds/by-ticker/' + 'S'.repeat(81),
    '/bonds?query=x',
    '/bonds?query=',
    `/bonds/${uid}/candles?period=century`,
    '/brokerage-accounts/all/operations?instrumentUid=not-a-uid',
  ])('validates %s in the configured pipeline', async (path) => {
    await request(app.getHttpServer())
      .get(`/api/v1${path}`)
      .set('Authorization', `Bearer ${token}`)
      .expect(400);
    expect(bonds.get).not.toHaveBeenCalled();
    expect(bonds.candles).not.toHaveBeenCalled();
  });
  it('serves coupon, yield and agency rating through the authenticated metrics endpoint', async () => {
    const metrics = {
      coupon: { currency: 'RUB', value: '30' },
      couponDate: '2026-10-10',
      couponType: 'COUPON_TYPE_FIX',
      couponPeriodDays: 90,
      couponYieldPercent: '12.5',
      couponYieldPriceAt: '2026-09-10T10:00:00Z',
      effectiveYield: {
        value: '15.6',
        pricePercent: '53.4',
        date: '2041-05-15',
        dateType: 'MATDATE',
        tradeAt: '2026-09-10T10:00:00Z',
      },
      creditRating: {
        agency: 'NCR',
        value: 'AAA.ru',
        status: 'active',
        date: '2026-04-17',
        sourceUrl: 'https://ratings.ru/ratings/issues/123/',
        observedAt: '2026-09-10T10:00:00Z',
      },
      unavailable: [],
      observedAt: '2026-09-10T10:00:00Z',
    };
    bonds.metrics.mockResolvedValue(metrics);
    await request(app.getHttpServer())
      .get(`/api/v1/bonds/${uid}/metrics`)
      .expect(401);
    expect(bonds.metrics).not.toHaveBeenCalled();
    const response = await request(app.getHttpServer())
      .get(`/api/v1/bonds/${uid}/metrics`)
      .set('Authorization', `Bearer ${token}`)
      .expect(200);
    expect(response.body).toEqual(metrics);
    expect(bonds.metrics).toHaveBeenCalledWith('bond-reader', uid);
  });
  it('uses verified identity and supports a direct instrument URL', async () => {
    await request(app.getHttpServer())
      .get(`/api/v1/bonds/${uid}`)
      .set('Authorization', `Bearer ${token}`)
      .expect(200);
    expect(bonds.get).toHaveBeenCalledWith('bond-reader', uid);
  });
  it.each(['SU26238RMFS4', 'su26238rmfs4', 'F', 'SU26238RMFS4@GS'])(
    'resolves ticker %s through the authenticated endpoint',
    async (ticker) => {
      const path = `/api/v1/bonds/by-ticker/${encodeURIComponent(ticker)}`;
      await request(app.getHttpServer()).get(path).expect(401);
      const response = await request(app.getHttpServer())
        .get(path)
        .set('Authorization', `Bearer ${token}`)
        .expect(200);
      expect(response.body).toMatchObject({
        instrumentUid: uid,
        slug: 'SU26238RMFS4',
      });
      expect(bonds.getByTicker).toHaveBeenCalledWith('bond-reader', ticker);
    },
  );
  it('returns an explicit conflict for an ambiguous ticker', async () => {
    bonds.getByTicker.mockRejectedValueOnce(
      new ConflictException({ code: 'BOND_TICKER_AMBIGUOUS' }),
    );
    const response = await request(app.getHttpServer())
      .get('/api/v1/bonds/by-ticker/SAME')
      .set('Authorization', `Bearer ${token}`)
      .expect(409);
    expect(response.body).toMatchObject({ code: 'BOND_TICKER_AMBIGUOUS' });
  });
  it('returns listing identity and nullable search prices through the search endpoint', async () => {
    const item = {
      instrumentUid: uid,
      name: 'Sber',
      classCode: 'TQBR',
      isin: 'ISIN',
      apiTradeAvailable: true,
      price: { currency: 'RUB', value: '306.12' },
      priceAt: null,
    };
    bonds.search.mockResolvedValue([item]);
    const response = await request(app.getHttpServer())
      .get('/api/v1/bonds?query=SU26238RMFS4')
      .set('Authorization', `Bearer ${token}`)
      .expect(200);
    expect(bonds.search).toHaveBeenCalledWith('bond-reader', 'SU26238RMFS4');
    expect(response.body).toEqual([item]);
  });
  it('preserves safe not-found and upstream errors', async () => {
    bonds.get.mockRejectedValueOnce(new NotFoundException());
    await request(app.getHttpServer())
      .get(`/api/v1/bonds/${uid}`)
      .set('Authorization', `Bearer ${token}`)
      .expect(404);
    bonds.get.mockRejectedValueOnce(
      new ServiceUnavailableException({ code: 'TBANK_UNAVAILABLE' }),
    );
    const response = await request(app.getHttpServer())
      .get(`/api/v1/bonds/${uid}`)
      .set('Authorization', `Bearer ${token}`)
      .expect(503);
    expect(response.body).toMatchObject({ code: 'TBANK_UNAVAILABLE' });
    expect(response.body).not.toHaveProperty('stack');
  });
});