gruperly/apps/backend/test/health-check.test.ts

import { Hono } from 'hono';
import { beforeEach, describe, expect, it, vi } from 'vitest';

vi.mock('@/lib/prisma', () => ({
  default: {
    $queryRaw: vi.fn(),
  },
  getPrismaClient: vi.fn(),
  UnitOfWork: class {},
}));

import prisma from '@/lib/prisma';
import { healthCheckRoutes } from '@/modules/health-check';

const app = new Hono();
app.route('/health', healthCheckRoutes);

describe('health check routes', () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it('reports ok when the database answers', async () => {
    vi.mocked(prisma.$queryRaw).mockResolvedValue([{ '?column?': 1 }]);

    const res = await app.request('/health');

    expect(res.status).toBe(200);
    const body = await res.json();
    expect(body).toMatchObject({ status: 'ok', checks: { database: 'ok' } });
    expect(typeof body.timestamp).toBe('string');
  });

  it('reports degraded when the database is unreachable', async () => {
    vi.mocked(prisma.$queryRaw).mockRejectedValue(new Error('connection refused'));

    const res = await app.request('/health');

    expect(res.status).toBe(503);
    expect(await res.json()).toMatchObject({
      code: 'database_unavailable',
      status: 503,
    });
  });
});