text: # -*- coding: utf-8 -*-
  
  # This code is part of Qiskit.
  #
  # (C) Copyright IBM 2019.
  #
  # This code is licensed under the Apache License, Version 2.0. You may
  # obtain a copy of this license in the LICENSE.txt file in the root directory
  # of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
  #
  # Any modifications or derivative works of this code must retain this
  # copyright notice, and modified files need to carry a notice indicating
  # that they have been altered from the originals.
  
  """
  Fake Burlington device (5 qubit).
  """
  
  import os
  import json
  
  from qiskit.providers.models import QasmBackendConfiguration, BackendProperties
  from qiskit.test.mock.fake_backend import FakeBackend
  
  
  class FakeBurlington(FakeBackend):
      """A fake 5 qubit backend."""
  
      def __init__(self):
          """
           0 ↔ 1 ↔ 3 ↔ 4
               ↕
               2
          """
          dirname = os.path.dirname(__file__)
          filename = "conf_burlington.json"
          with open(os.path.join(dirname, filename), "r") as f_conf:
              conf = json.load(f_conf)
  
          configuration = QasmBackendConfiguration.from_dict(conf)
          configuration.backend_name = 'fake_burlington'
          super().__init__(configuration)
  
      def properties(self):
          """Returns a snapshot of device properties"""
          dirname = os.path.dirname(__file__)
          filename = "props_burlington.json"
          with open(os.path.join(dirname, filename), "r") as f_prop:
              props = json.load(f_prop)
          return BackendProperties.from_dict(props)
  