# -*- coding: utf-8 -*-
# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Integration VM test for cros commands.

To run this command, first build a test image. e.g.
(host)$ cros_sdk
(sdk)$ ./build_packages --board=betty
(sdk)$ ./build_image --board=betty test
(sdk)$ ./image_to_vm.sh --board=betty --test_image
(sdk)$ cd ../../chromite/cli/cros/tests/
(sdk)$ ./cros_vm_test --board=betty --image_path \
~/trunk/src/build/images/betty/latest/chromiumos_qemu_image.bin
"""

from __future__ import print_function

from chromite.cli import command_vm_test
from chromite.lib import commandline


class CrosVMTest(command_vm_test.CommandVMTest):
  """Test class for cros commands."""

  def BuildCommand(self, command, device=None, pos_args=None, opt_args=None):
    """Builds a cros command.

    Args:
      command: The subcommand to build on (e.g. 'flash', 'deploy').
      device: The device's address for the command.
      pos_args: A list of positional arguments for the command.
      opt_args: A list of optional arguments for the command.

    Returns:
      A full cros command as a list.
    """
    cmd = ['cros', command]
    if opt_args:
      cmd.extend(opt_args)
    if device:
      if command == 'devices':
        # The device argument is optional for 'cros devices' command.
        cmd.extend(['--device', device])
      else:
        cmd.append(device)
    if pos_args:
      cmd.extend(pos_args)
    return cmd


def _ParseArguments(argv):
  """Parses command-line arguments."""
  parser = commandline.ArgumentParser(description=__doc__, caching=True)
  parser.add_argument(
      '--board', required=True, help='Board for the VM to run tests.')
  parser.add_argument(
      '--image_path', required=True, type='path',
      help='Path to the image for the VM to run tests.')
  return parser.parse_args(argv)


def main(argv):
  """Main function of the script."""
  options = _ParseArguments(argv)
  options.Freeze()
  test = CrosVMTest(options.board, options.image_path)
  test.Run()