text: # ******************************************************************************
  # Copyright 2017-2020 Intel Corporation
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  # ******************************************************************************
  import os
  import pytest
  
  import tests
  
  from pathlib import Path
  
  
  def _get_default_model_zoo_dir():
      return Path(os.getenv("ONNX_HOME", Path.home() / ".onnx/model_zoo"))
  
  
  def pytest_addoption(parser):
      parser.addoption(
          "--backend",
          default="CPU",
          choices=["CPU", "GPU", "FPGA", "HDDL", "MYRIAD", "HETERO"],
          help="Select target device",
      )
      parser.addoption(
          "--model_zoo_dir",
          default=_get_default_model_zoo_dir(),
          type=str,
          help="location of the model zoo",
      )
      parser.addoption(
          "--model_zoo_xfail",
          action="store_true",
          help="treat model zoo known issues as xfails instead of failures",
      )
  
  
  def pytest_configure(config):
      backend_name = config.getvalue("backend")
      tests.BACKEND_NAME = backend_name
      tests.MODEL_ZOO_DIR = Path(config.getvalue("model_zoo_dir"))
      tests.MODEL_ZOO_XFAIL = config.getvalue("model_zoo_xfail")
  
      # register additional markers
      config.addinivalue_line("markers", "skip_on_cpu: Skip test on CPU")
      config.addinivalue_line("markers", "skip_on_gpu: Skip test on GPU")
      config.addinivalue_line("markers", "skip_on_fpga: Skip test on FPGA")
      config.addinivalue_line("markers", "skip_on_hddl: Skip test on HDDL")
      config.addinivalue_line("markers", "skip_on_myriad: Skip test on MYRIAD")
      config.addinivalue_line("markers", "skip_on_hetero: Skip test on HETERO")
      config.addinivalue_line("markers", "onnx_coverage: Collect ONNX operator coverage")
  
  
  def pytest_collection_modifyitems(config, items):
      backend_name = config.getvalue("backend")
      tests.MODEL_ZOO_DIR = Path(config.getvalue("model_zoo_dir"))
      tests.MODEL_ZOO_XFAIL = config.getvalue("model_zoo_xfail")
  
      keywords = {
          "CPU": "skip_on_cpu",
          "GPU": "skip_on_gpu",
          "FPGA": "skip_on_fpga",
          "HDDL": "skip_on_hddl",
          "MYRIAD": "skip_on_myriad",
          "HETERO": "skip_on_hetero",
      }
  
      skip_markers = {
          "CPU": pytest.mark.skip(reason="Skipping test on the CPU backend."),
          "GPU": pytest.mark.skip(reason="Skipping test on the GPU backend."),
          "FPGA": pytest.mark.skip(reason="Skipping test on the FPGA backend."),
          "HDDL": pytest.mark.skip(reason="Skipping test on the HDDL backend."),
          "MYRIAD": pytest.mark.skip(reason="Skipping test on the MYRIAD backend."),
          "HETERO": pytest.mark.skip(reason="Skipping test on the HETERO backend."),
      }
  
      for item in items:
          skip_this_backend = keywords[backend_name]
          if skip_this_backend in item.keywords:
              item.add_marker(skip_markers[backend_name])
  