# Copyright 2016 Google Inc.
#
# 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 mock
import os
import pytz
import shutil
import tempfile
import unittest

from mobly import logger


class LoggerTest(unittest.TestCase):
  """Verifies code in mobly.logger module.
  """
  def setUp(self):
    self.log_dir = tempfile.mkdtemp()

  def tearDown(self):
    shutil.rmtree(self.log_dir)

  def test_epoch_to_log_line_timestamp(self):
    actual_stamp = logger.epoch_to_log_line_timestamp(1469134262116,
                              time_zone=pytz.utc)
    self.assertEqual("07-21 20:51:02.116", actual_stamp)

  def test_is_valid_logline_timestamp(self):
    self.assertTrue(
      logger.is_valid_logline_timestamp("06-21 17:44:42.336"))

  def test_is_valid_logline_timestamp_when_wrong_length(self):
    self.assertFalse(
      logger.is_valid_logline_timestamp("  06-21 17:44:42.336"))

  def test_is_valid_logline_timestamp_when_invalid_content(self):
    self.assertFalse(
      logger.is_valid_logline_timestamp("------------------"))

  @mock.patch('mobly.utils.create_alias')
  def test_create_latest_log_alias(self, mock_create_alias):
    logger.create_latest_log_alias('fake_path', alias='latest')
    mock_create_alias.assert_called_once_with('fake_path', 'latest')

  @mock.patch('mobly.logger._setup_test_logger')
  @mock.patch('mobly.logger.create_latest_log_alias')
  def test_setup_test_logger_creates_log_alias(self,
                         mock_create_latest_log_alias,
                         mock__setup_test_logger):
    logger.setup_test_logger(self.log_dir)
    mock__setup_test_logger.assert_called_once_with(self.log_dir, None)
    mock_create_latest_log_alias.assert_called_once_with(self.log_dir,
                               alias='latest')

  @mock.patch('mobly.logger._setup_test_logger')
  @mock.patch('mobly.logger.create_latest_log_alias')
  def test_setup_test_logger_creates_log_alias_with_custom_value(
      self, mock_create_latest_log_alias, mock__setup_test_logger):
    mock_alias = mock.MagicMock()
    logger.setup_test_logger(self.log_dir, alias=mock_alias)

    mock_create_latest_log_alias.assert_called_once_with(self.log_dir,
                               alias=mock_alias)

  def test_sanitize_filename_when_valid(self):
    fake_filename = 'logcat.txt'
    expected_filename = 'logcat.txt'
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_valid_with_path(self):
    fake_filename = os.path.join('dir', 'logs', 'logcat.txt')
    expected_filename = os.path.join('dir', 'logs', 'logcat.txt')
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_random_spaces(self):
    fake_filename = 'log cat file.txt'
    expected_filename = 'log_cat_file.txt'
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_over_max_characters(self):
    fake_filename = 'l' * 300
    expected_filename = 'l' * 237
    self.assertEqual(len(logger.sanitize_filename(fake_filename)), 237)
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_over_max_characters_with_extension(self):
    fake_filename = 'l' * 300 + '.txt'
    expected_filename = 'l' * 233 + '.txt'
    self.assertEqual(len(logger.sanitize_filename(fake_filename)), 237)
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_extension_at_max_characters(self):
    fake_filename = 'l' * 300 + '.' + 't' * 236
    expected_filename = '.' + 't' * 236
    self.assertEqual(len(logger.sanitize_filename(fake_filename)), 237)
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_extension_over_max_characters(self):
    fake_filename = 'l' * 300 + '.' + 't' * 300
    expected_filename = 'l' * 237
    self.assertEqual(len(logger.sanitize_filename(fake_filename)), 237)
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test__sanitize_windows_filename_when_path_characters(self):
    fake_filename = '/\\'
    expected_filename = '__'
    self.assertEqual(logger._sanitize_windows_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_specical_characters(self):
    fake_filename = '<>:"|?*\x00'
    expected_filename = '---_,,,0'
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_con(self):
    for fake_filename, expected_filename in [
      ('con', 'mobly_con'),
      ('CON', 'mobly_CON'),
      ('con.txt', 'mobly_con.txt'),
      ('connections.log', 'connections.log'),
    ]:
      self.assertEqual(logger.sanitize_filename(fake_filename),
               expected_filename)

  def test_sanitize_filename_when_prn(self):
    for fake_filename, expected_filename in [
      ('prn', 'mobly_prn'),
      ('PRN', 'mobly_PRN'),
      ('prn.txt', 'mobly_prn.txt'),
      ('prnters.log', 'prnters.log'),
    ]:
      self.assertEqual(logger.sanitize_filename(fake_filename),
               expected_filename)

  def test_sanitize_filename_when_aux(self):
    for fake_filename, expected_filename in [
      ('aux', 'mobly_aux'),
      ('AUX', 'mobly_AUX'),
      ('aux.txt', 'mobly_aux.txt'),
      ('auxiliaries.log', 'auxiliaries.log'),
    ]:
      self.assertEqual(logger.sanitize_filename(fake_filename),
               expected_filename)

  def test_sanitize_filename_when_nul(self):
    for fake_filename, expected_filename in [
      ('nul', 'mobly_nul'),
      ('NUL', 'mobly_NUL'),
      ('nul.txt', 'mobly_nul.txt'),
      ('nullptrs.log', 'nullptrs.log'),
    ]:
      self.assertEqual(logger.sanitize_filename(fake_filename),
               expected_filename)

  def test_sanitize_filename_when_com(self):
    for fake_filename, expected_filename in [
      ('com', 'com'),
      ('COM0', 'mobly_COM0'),
      ('com1', 'mobly_com1'),
      ('COM2', 'mobly_COM2'),
      ('com3', 'mobly_com3'),
      ('COM4', 'mobly_COM4'),
      ('com5', 'mobly_com5'),
      ('COM6', 'mobly_COM6'),
      ('com7', 'mobly_com7'),
      ('COM8', 'mobly_COM8'),
      ('com9', 'mobly_com9'),
      ('com0.log', 'mobly_com0.log'),
      ('com0files.log', 'com0files.log'),
    ]:
      self.assertEqual(logger.sanitize_filename(fake_filename),
               expected_filename)

  def test_sanitize_filename_when_lpt(self):
    for fake_filename, expected_filename in [
      ('lpt', 'lpt'),
      ('LPT0', 'mobly_LPT0'),
      ('lpt1', 'mobly_lpt1'),
      ('LPT2', 'mobly_LPT2'),
      ('lpt3', 'mobly_lpt3'),
      ('LPT4', 'mobly_LPT4'),
      ('lpt5', 'mobly_lpt5'),
      ('LPT6', 'mobly_LPT6'),
      ('lpt7', 'mobly_lpt7'),
      ('LPT8', 'mobly_LPT8'),
      ('lpt9', 'mobly_lpt9'),
      ('lpt3.txt', 'mobly_lpt3.txt'),
      ('lpt3_file.txt', 'lpt3_file.txt'),
    ]:
      self.assertEqual(logger.sanitize_filename(fake_filename),
               expected_filename)

  def test_sanitize_filename_when_ends_with_space(self):
    fake_filename = 'logcat.txt '
    expected_filename = 'logcat.txt_'
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)

  def test_sanitize_filename_when_ends_with_period(self):
    fake_filename = 'logcat.txt.'
    expected_filename = 'logcat.txt_'
    self.assertEqual(logger.sanitize_filename(fake_filename),
             expected_filename)


if __name__ == "__main__":
  unittest.main()