#!/usr/bin/env python
# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""
Unit tests for the contents of fastboot_utils.py
"""

# pylint: disable=protected-access,unused-argument

import io
import logging
import os
import sys
import unittest

from devil.android import device_errors
from devil.android import device_utils
from devil.android import fastboot_utils
from devil.android.sdk import fastboot
from devil.utils import mock_calls
from pylib import constants

sys.path.append(os.path.join(
    constants.DIR_SOURCE_ROOT, 'third_party', 'pymock'))
import mock # pylint: disable=import-error

_BOARD = 'board_type'
_SERIAL = '0123456789abcdef'
_PARTITIONS = ['cache', 'userdata', 'system', 'bootloader', 'radio']
_IMAGES = {
    'cache': 'cache.img',
    'userdata': 'userdata.img',
    'system': 'system.img',
    'bootloader': 'bootloader.img',
    'radio': 'radio.img',
}
_VALID_FILES = [_BOARD + '.zip', 'android-info.txt']
_INVALID_FILES = ['test.zip', 'android-info.txt']


class MockFile(object):

  def __init__(self, name='/tmp/some/file'):
    self.file = mock.MagicMock(spec=file)
    self.file.name = name

  def __enter__(self):
    return self.file

  def __exit__(self, exc_type, exc_val, exc_tb):
    pass

  @property
  def name(self):
    return self.file.name


def _FastbootWrapperMock(test_serial):
  fastbooter = mock.Mock(spec=fastboot.Fastboot)
  fastbooter.__str__ = mock.Mock(return_value=test_serial)
  fastbooter.Devices.return_value = [test_serial]
  return fastbooter

def _DeviceUtilsMock(test_serial):
  device = mock.Mock(spec=device_utils.DeviceUtils)
  device.__str__ = mock.Mock(return_value=test_serial)
  device.product_board = mock.Mock(return_value=_BOARD)
  device.adb = mock.Mock()
  return device


class FastbootUtilsTest(mock_calls.TestCase):

  def setUp(self):
    self.device_utils_mock = _DeviceUtilsMock(_SERIAL)
    self.fastboot_wrapper = _FastbootWrapperMock(_SERIAL)
    self.fastboot = fastboot_utils.FastbootUtils(
        self.device_utils_mock, fastbooter=self.fastboot_wrapper,
        default_timeout=2, default_retries=0)
    self.fastboot._board = _BOARD


class FastbootUtilsInitTest(FastbootUtilsTest):

  def testInitWithDeviceUtil(self):
    f = fastboot_utils.FastbootUtils(self.device_utils_mock)
    self.assertEqual(str(self.device_utils_mock), str(f._device))

  def testInitWithMissing_fails(self):
    with self.assertRaises(AttributeError):
      fastboot_utils.FastbootUtils(None)
    with self.assertRaises(AttributeError):
      fastboot_utils.FastbootUtils('')


class FastbootUtilsWaitForFastbootMode(FastbootUtilsTest):

  # If this test fails by timing out after 1 second.
  @mock.patch('time.sleep', mock.Mock())
  def testWaitForFastbootMode(self):
    self.fastboot.WaitForFastbootMode()


class FastbootUtilsEnableFastbootMode(FastbootUtilsTest):

  def testEnableFastbootMode(self):
    with self.assertCalls(
        self.call.fastboot._device.EnableRoot(),
        self.call.fastboot._device.adb.Reboot(to_bootloader=True),
        self.call.fastboot.WaitForFastbootMode()):
      self.fastboot.EnableFastbootMode()


class FastbootUtilsReboot(FastbootUtilsTest):

  def testReboot_bootloader(self):
    with self.assertCalls(
        self.call.fastboot.fastboot.RebootBootloader(),
        self.call.fastboot.WaitForFastbootMode()):
      self.fastboot.Reboot(bootloader=True)

  def testReboot_normal(self):
    with self.assertCalls(
        self.call.fastboot.fastboot.Reboot(),
        self.call.fastboot._device.WaitUntilFullyBooted(timeout=mock.ANY)):
      self.fastboot.Reboot()


class FastbootUtilsFlashPartitions(FastbootUtilsTest):

  def testFlashPartitions_wipe(self):
    with self.assertCalls(
        (self.call.fastboot._VerifyBoard('test'), True),
        (self.call.fastboot._FindAndVerifyPartitionsAndImages(
            _PARTITIONS, 'test'), _IMAGES),
        (self.call.fastboot.fastboot.Flash('cache', 'cache.img')),
        (self.call.fastboot.fastboot.Flash('userdata', 'userdata.img')),
        (self.call.fastboot.fastboot.Flash('system', 'system.img')),
        (self.call.fastboot.fastboot.Flash('bootloader', 'bootloader.img')),
        (self.call.fastboot.Reboot(bootloader=True)),
        (self.call.fastboot.fastboot.Flash('radio', 'radio.img')),
        (self.call.fastboot.Reboot(bootloader=True))):
      self.fastboot._FlashPartitions(_PARTITIONS, 'test', wipe=True)

  def testFlashPartitions_noWipe(self):
    with self.assertCalls(
        (self.call.fastboot._VerifyBoard('test'), True),
        (self.call.fastboot._FindAndVerifyPartitionsAndImages(
            _PARTITIONS, 'test'), _IMAGES),
        (self.call.fastboot.fastboot.Flash('system', 'system.img')),
        (self.call.fastboot.fastboot.Flash('bootloader', 'bootloader.img')),
        (self.call.fastboot.Reboot(bootloader=True)),
        (self.call.fastboot.fastboot.Flash('radio', 'radio.img')),
        (self.call.fastboot.Reboot(bootloader=True))):
      self.fastboot._FlashPartitions(_PARTITIONS, 'test')


class FastbootUtilsFastbootMode(FastbootUtilsTest):

  def testFastbootMode_good(self):
    with self.assertCalls(
        self.call.fastboot.EnableFastbootMode(),
        self.call.fastboot.fastboot.SetOemOffModeCharge(False),
        self.call.fastboot.fastboot.SetOemOffModeCharge(True),
        self.call.fastboot.Reboot()):
      with self.fastboot.FastbootMode() as fbm:
        self.assertEqual(self.fastboot, fbm)

  def testFastbootMode_exception(self):
    with self.assertCalls(
        self.call.fastboot.EnableFastbootMode(),
        self.call.fastboot.fastboot.SetOemOffModeCharge(False),
        self.call.fastboot.fastboot.SetOemOffModeCharge(True),
        self.call.fastboot.Reboot()):
      with self.assertRaises(NotImplementedError):
        with self.fastboot.FastbootMode() as fbm:
          self.assertEqual(self.fastboot, fbm)
          raise NotImplementedError

  def testFastbootMode_exceptionInEnableFastboot(self):
    self.fastboot.EnableFastbootMode = mock.Mock()
    self.fastboot.EnableFastbootMode.side_effect = NotImplementedError
    with self.assertRaises(NotImplementedError):
      with self.fastboot.FastbootMode():
        pass


class FastbootUtilsVerifyBoard(FastbootUtilsTest):

  def testVerifyBoard_bothValid(self):
    mock_file = io.StringIO(u'require board=%s\n' % _BOARD)
    with mock.patch('__builtin__.open', return_value=mock_file, create=True):
      with mock.patch('os.listdir', return_value=_VALID_FILES):
        self.assertTrue(self.fastboot._VerifyBoard('test'))

  def testVerifyBoard_BothNotValid(self):
    mock_file = io.StringIO(u'abc')
    with mock.patch('__builtin__.open', return_value=mock_file, create=True):
      with mock.patch('os.listdir', return_value=_INVALID_FILES):
        self.assertFalse(self.assertFalse(self.fastboot._VerifyBoard('test')))

  def testVerifyBoard_FileNotFoundZipValid(self):
    with mock.patch('os.listdir', return_value=[_BOARD + '.zip']):
      self.assertTrue(self.fastboot._VerifyBoard('test'))

  def testVerifyBoard_ZipNotFoundFileValid(self):
    mock_file = io.StringIO(u'require board=%s\n' % _BOARD)
    with mock.patch('__builtin__.open', return_value=mock_file, create=True):
      with mock.patch('os.listdir', return_value=['android-info.txt']):
        self.assertTrue(self.fastboot._VerifyBoard('test'))

  def testVerifyBoard_zipNotValidFileIs(self):
    mock_file = io.StringIO(u'require board=%s\n' % _BOARD)
    with mock.patch('__builtin__.open', return_value=mock_file, create=True):
      with mock.patch('os.listdir', return_value=_INVALID_FILES):
        self.assertTrue(self.fastboot._VerifyBoard('test'))

  def testVerifyBoard_fileNotValidZipIs(self):
    mock_file = io.StringIO(u'require board=WrongBoard')
    with mock.patch('__builtin__.open', return_value=mock_file, create=True):
      with mock.patch('os.listdir', return_value=_VALID_FILES):
        self.assertFalse(self.fastboot._VerifyBoard('test'))

  def testVerifyBoard_noBoardInFileValidZip(self):
    mock_file = io.StringIO(u'Regex wont match')
    with mock.patch('__builtin__.open', return_value=mock_file, create=True):
      with mock.patch('os.listdir', return_value=_VALID_FILES):
        self.assertTrue(self.fastboot._VerifyBoard('test'))

  def testVerifyBoard_noBoardInFileInvalidZip(self):
    mock_file = io.StringIO(u'Regex wont match')
    with mock.patch('__builtin__.open', return_value=mock_file, create=True):
      with mock.patch('os.listdir', return_value=_INVALID_FILES):
        self.assertFalse(self.fastboot._VerifyBoard('test'))

class FastbootUtilsFindAndVerifyPartitionsAndImages(FastbootUtilsTest):

  def testFindAndVerifyPartitionsAndImages_valid(self):
    PARTITIONS = [
        'bootloader', 'radio', 'boot', 'recovery', 'system', 'userdata', 'cache'
    ]
    files = [
        'bootloader-test-.img',
        'radio123.img',
        'boot.img',
        'recovery.img',
        'system.img',
        'userdata.img',
        'cache.img'
    ]
    return_check = {
      'bootloader': 'test/bootloader-test-.img',
      'radio': 'test/radio123.img',
      'boot': 'test/boot.img',
      'recovery': 'test/recovery.img',
      'system': 'test/system.img',
      'userdata': 'test/userdata.img',
      'cache': 'test/cache.img',
    }

    with mock.patch('os.listdir', return_value=files):
      return_value = self.fastboot._FindAndVerifyPartitionsAndImages(
          PARTITIONS, 'test')
      self.assertDictEqual(return_value, return_check)

  def testFindAndVerifyPartitionsAndImages_badPartition(self):
    with mock.patch('os.listdir', return_value=['test']):
      with self.assertRaises(KeyError):
        self.fastboot._FindAndVerifyPartitionsAndImages(['test'], 'test')

  def testFindAndVerifyPartitionsAndImages_noFile(self):
    with mock.patch('os.listdir', return_value=['test']):
      with self.assertRaises(device_errors.FastbootCommandFailedError):
        self.fastboot._FindAndVerifyPartitionsAndImages(['cache'], 'test')


if __name__ == '__main__':
  logging.getLogger().setLevel(logging.DEBUG)
  unittest.main(verbosity=2)