const request = require('supertest');
const fs = require('fs');

describe('OpenAPI Schema Endpoint', () => {
  let app;

  beforeAll(() => {
    // Import the app after modifications
    app = require('../index.js');
  });

  test('should serve OpenAPI schema at /openapi.json', async () => {
    // Read the expected schema from the file
    const expectedSchema = JSON.parse(fs.readFileSync('./openapi.json', 'utf-8'));
    
    const response = await request(app)
      .get('/openapi.json')
      .expect(200)
      .expect('Content-Type', /application\/json/);
      
    expect(response.body).toEqual(expectedSchema);
  });
});