text: import asyncio
  
  from connexion import AioHttpApp
  
  try:
      import ujson as json
  except ImportError:
      import json
  
  
  @asyncio.coroutine
  def test_swagger_json(aiohttp_api_spec_dir, aiohttp_client):
      """ Verify the swagger.json file is returned for default setting passed to app. """
      app = AioHttpApp(__name__, port=5001,
                       specification_dir=aiohttp_api_spec_dir,
                       debug=True)
      app.add_api('datetime_support.yaml')
  
      app_client = yield from aiohttp_client(app.app)
      swagger_json = yield from app_client.get('/v1.0/openapi.json')
      spec_data = yield from swagger_json.json()
  
      def get_value(data, path):
          for part in path.split('.'):
              data = data.get(part)
              assert data, "No data in part '{}' of '{}'".format(part, path)
          return data
  
      example = get_value(spec_data, 'paths./datetime.get.responses.200.content.application/json.schema.example.value')
      assert example == '2000-01-23T04:56:07.000008Z'
      example = get_value(spec_data, 'paths./date.get.responses.200.content.application/json.schema.example.value')
      assert example == '2000-01-23'
      example = get_value(spec_data, 'paths./uuid.get.responses.200.content.application/json.schema.example.value')
      assert example == 'a7b8869c-5f24-4ce0-a5d1-3e44c3663aa9'
  
      resp = yield from app_client.get('/v1.0/datetime')
      assert resp.status == 200
      json_data = yield from resp.json()
      assert json_data == {'value': '2000-01-02T03:04:05.000006Z'}
  
      resp = yield from app_client.get('/v1.0/date')
      assert resp.status == 200
      json_data = yield from resp.json()
      assert json_data == {'value': '2000-01-02'}
  
      resp = yield from app_client.get('/v1.0/uuid')
      assert resp.status == 200
      json_data = yield from resp.json()
      assert json_data == {'value': 'e7ff66d0-3ec2-4c4e-bed0-6e4723c24c51'}
  