#!/usr/bin/env python
# -*- coding:utf-8 -*-
# Copyright 2019 The Android Open Source Project
#
# 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.

"""Wrapper to run pytest with the right settings."""

from __future__ import print_function

import errno
import os
import subprocess
import sys


def run_pytest(cmd, argv):
  """Run the unittests via |cmd|."""
  try:
    return subprocess.call([cmd] + argv)
  except OSError as e:
    if e.errno == errno.ENOENT:
      print('%s: unable to run `%s`: %s' % (__file__, cmd, e), file=sys.stderr)
      print('%s: Try installing pytest: sudo apt-get install python-pytest' %
            (__file__,), file=sys.stderr)
      return 127
    else:
      raise


def main(argv):
  """The main entry."""
  # Add the repo tree to PYTHONPATH as the tests expect to be able to import
  # modules directly.
  pythonpath = os.path.dirname(os.path.realpath(__file__))
  oldpythonpath = os.environ.get('PYTHONPATH', None)
  if oldpythonpath is not None:
    pythonpath += os.pathsep + oldpythonpath
  os.environ['PYTHONPATH'] = pythonpath

  return run_pytest('pytest', argv)


if __name__ == '__main__':
  sys.exit(main(sys.argv[1:]))