# Copyright 2017 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 io
import logging
import mock
import os
import platform
import shutil
import tempfile
import time
import unittest
import yaml

from mobly import config_parser
from mobly import records
from mobly import test_runner

from tests.lib import mock_controller
from tests.lib import integration_test
from tests.lib import teardown_class_failure_test

if platform.system() == 'Windows':
  import win32file
  from win32com import client


class OutputTest(unittest.TestCase):
  """This test class has unit tests for the implementation of Mobly's output
  files.
  """

  def setUp(self):
    self.tmp_dir = tempfile.mkdtemp()
    self.base_mock_test_config = config_parser.TestRunConfig()
    self.base_mock_test_config.testbed_name = 'SampleTestBed'
    self.base_mock_test_config.controller_configs = {}
    self.base_mock_test_config.user_params = {
        'icecream': 42,
        'extra_param': 'haha'
    }
    self.base_mock_test_config.log_path = self.tmp_dir
    self.log_dir = self.base_mock_test_config.log_path
    self.testbed_name = self.base_mock_test_config.testbed_name

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

  def create_mock_test_config(self, base_mock_test_config):
    mock_test_config = base_mock_test_config.copy()
    mock_ctrlr_config_name = mock_controller.MOBLY_CONTROLLER_CONFIG_NAME
    my_config = [{
        'serial': 'xxxx',
        'magic': 'Magic1'
    }, {
        'serial': 'xxxx',
        'magic': 'Magic2'
    }]
    mock_test_config.controller_configs[mock_ctrlr_config_name] = my_config
    return mock_test_config

  def get_output_logs(self, output_dir):
    summary_file_path = os.path.join(output_dir, records.OUTPUT_FILE_SUMMARY)
    debug_log_path = os.path.join(output_dir, records.OUTPUT_FILE_DEBUG_LOG)
    info_log_path = os.path.join(output_dir, records.OUTPUT_FILE_INFO_LOG)
    return (summary_file_path, debug_log_path, info_log_path)

  def assert_output_logs_exist(self, output_dir):
    (summary_file_path, debug_log_path,
     info_log_path) = self.get_output_logs(output_dir)
    self.assertTrue(os.path.isfile(summary_file_path))
    self.assertTrue(os.path.isfile(debug_log_path))
    self.assertTrue(os.path.isfile(info_log_path))
    return (summary_file_path, debug_log_path, info_log_path)

  def assert_log_contents(self, log_path, whitelist=[], blacklist=[]):
    with io.open(log_path, 'r', encoding='utf-8') as f:
      content = f.read()
      for item in whitelist:
        self.assertIn(item, content)
      for item in blacklist:
        self.assertNotIn(item, content)

  def test_yields_logging_path(self):
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger() as log_path:
      self.assertEqual(log_path, logging.log_path)

  @unittest.skipIf(platform.system() == 'Windows',
                   'Symlinks are usually specific to Unix operating systems')
  def test_symlink(self):
    """Verifies the symlink is created and links properly."""
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger():
      pass
    symlink = os.path.join(self.log_dir, self.testbed_name, 'latest')
    self.assertEqual(os.readlink(symlink), logging.log_path)

  @unittest.skipIf(platform.system() != 'Windows',
                   'Shortcuts are specific to Windows operating systems')
  def test_shortcut(self):
    """Verifies the shortcut is created and links properly."""
    shortcut_path = os.path.join(self.log_dir, self.testbed_name, 'latest.lnk')
    shell = client.Dispatch("WScript.Shell")
    shortcut = shell.CreateShortCut(shortcut_path)
    self.assertFalse(shortcut.Targetpath)
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger():
      pass
    shortcut = shell.CreateShortCut(shortcut_path)
    # Normalize paths for case and truncation
    normalized_shortcut_path = os.path.normcase(
        win32file.GetLongPathName(shortcut.Targetpath))
    normalized_logger_path = os.path.normcase(
        win32file.GetLongPathName(logging.log_path))
    self.assertEqual(normalized_shortcut_path, normalized_logger_path)

  @mock.patch('mobly.utils.create_alias')
  def test_mobly_logger_with_default_latest_log_alias(self, mock_create_alias):
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger():
      pass
    expected_alias_dir = os.path.join(self.log_dir, self.testbed_name, 'latest')
    mock_create_alias.assert_called_once_with(logging.log_path,
                                              expected_alias_dir)

  @mock.patch('mobly.utils.create_alias')
  def test_mobly_logger_with_custom_latest_log_alias(self, mock_create_alias):
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger(alias='history'):
      pass
    expected_alias_dir = os.path.join(self.log_dir, self.testbed_name,
                                      'history')
    mock_create_alias.assert_called_once_with(logging.log_path,
                                              expected_alias_dir)

  @mock.patch('mobly.utils.create_alias')
  def test_mobly_logger_skips_latest_log_alias_when_none(
      self, mock_create_alias):
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger(alias=None):
      pass
    mock_create_alias.asset_not_called()

  @mock.patch('mobly.utils.create_alias')
  def test_mobly_logger_skips_latest_log_alias_when_empty(
      self, mock_create_alias):
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger(alias=''):
      pass
    mock_create_alias.asset_not_called()

  def test_logging_before_run(self):
    """Verifies the expected output files from a test run.

    * Files are correctly created.
    * Basic sanity checks of each output file.
    """
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    info_uuid = 'e098d4ff-4e90-4e08-b369-aa84a7ef90ec'
    debug_uuid = 'c6f1474e-960a-4df8-8305-1c5b8b905eca'
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger():
      logging.info(info_uuid)
      logging.debug(debug_uuid)
      tr.add_test_class(mock_test_config, integration_test.IntegrationTest)
      tr.run()
    output_dir = logging.root_output_path
    (summary_file_path, debug_log_path,
     info_log_path) = self.assert_output_logs_exist(output_dir)
    self.assert_log_contents(debug_log_path, whitelist=[debug_uuid, info_uuid])
    self.assert_log_contents(info_log_path,
                             whitelist=[info_uuid],
                             blacklist=[debug_uuid])

  @mock.patch('mobly.logger.get_log_file_timestamp',
              side_effect=str(time.time()))
  def test_run_twice_for_two_sets_of_logs(self, mock_timestamp):
    """Verifies the expected output files from a test run.

    * Files are correctly created.
    * Basic sanity checks of each output file.
    """
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    tr.add_test_class(mock_test_config, integration_test.IntegrationTest)
    with tr.mobly_logger():
      tr.run()
    output_dir1 = logging.root_output_path
    with tr.mobly_logger():
      tr.run()
    output_dir2 = logging.root_output_path
    self.assertNotEqual(output_dir1, output_dir2)
    self.assert_output_logs_exist(output_dir1)
    self.assert_output_logs_exist(output_dir2)

  @mock.patch('mobly.logger.get_log_file_timestamp',
              side_effect=str(time.time()))
  def test_teardown_erases_logs(self, mock_timestamp):
    """Verifies the expected output files from a test run.

    * Files are correctly created.
    * Basic sanity checks of each output file.
    """
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    info_uuid1 = '0c3ebb06-700d-496e-b015-62652da9e451'
    debug_uuid1 = '0c3ebb06-700d-496e-b015-62652da9e451'
    info_uuid2 = '484ef7db-f2dd-4b76-a126-c2f263e3808c'
    debug_uuid2 = 'd564da87-c42f-49c3-b0bf-18fa97cf0218'
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)

    with tr.mobly_logger():
      logging.info(info_uuid1)
      logging.debug(debug_uuid1)
    output_dir1 = logging.log_path

    with tr.mobly_logger():
      logging.info(info_uuid2)
      logging.debug(debug_uuid2)
    output_dir2 = logging.log_path

    self.assertNotEqual(output_dir1, output_dir2)

    (summary_file_path1, debug_log_path1,
     info_log_path1) = self.get_output_logs(output_dir1)
    (summary_file_path2, debug_log_path2,
     info_log_path2) = self.get_output_logs(output_dir2)

    self.assert_log_contents(debug_log_path1,
                             whitelist=[debug_uuid1, info_uuid1],
                             blacklist=[info_uuid2, debug_uuid2])
    self.assert_log_contents(debug_log_path2,
                             whitelist=[debug_uuid2, info_uuid2],
                             blacklist=[info_uuid1, debug_uuid1])

  def test_basic_output(self):
    """Verifies the expected output files from a test run.

    * Files are correctly created.
    * Basic sanity checks of each output file.
    """
    mock_test_config = self.create_mock_test_config(self.base_mock_test_config)
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger():
      tr.add_test_class(mock_test_config, integration_test.IntegrationTest)
      tr.run()
    expected_class_path = os.path.join(logging.root_output_path,
                                       'IntegrationTest')
    self.assertEqual(expected_class_path, logging.log_path)
    os.path.exists(logging.log_path)
    output_dir = logging.root_output_path
    (summary_file_path, debug_log_path,
     info_log_path) = self.assert_output_logs_exist(output_dir)
    summary_entries = []
    with io.open(summary_file_path, 'r', encoding='utf-8') as f:
      for entry in yaml.safe_load_all(f):
        self.assertTrue(entry['Type'])
        summary_entries.append(entry)
    self.assert_log_contents(debug_log_path, whitelist=['DEBUG', 'INFO'])
    self.assert_log_contents(info_log_path,
                             whitelist=['INFO'],
                             blacklist=['DEBUG'])

  def test_teardown_class_output(self):
    """Verifies the summary file includes the failure record for
    teardown_class.
    """
    mock_test_config = self.base_mock_test_config.copy()
    tr = test_runner.TestRunner(self.log_dir, self.testbed_name)
    with tr.mobly_logger():
      tr.add_test_class(mock_test_config,
                        teardown_class_failure_test.TearDownClassFailureTest)
      tr.run()
    output_dir = logging.root_output_path
    summary_file_path = os.path.join(output_dir, records.OUTPUT_FILE_SUMMARY)
    found = False
    with io.open(summary_file_path, 'r', encoding='utf-8') as f:
      raw_content = f.read()
      f.seek(0)
      for entry in yaml.safe_load_all(f):
        if (entry['Type'] == 'Record' and
            entry[records.TestResultEnums.RECORD_NAME] == 'teardown_class'):
          found = True
          break
      self.assertTrue(
          found, 'No record for teardown_class found in the output file:\n %s' %
          raw_content)


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