"""Unittest Lab exercise to test implementation of "Synonym Dictionary"."""
import os
import unittest

from unittest import mock
from mobly.controllers import android_device
from mobly.controllers.android_device_lib import adb
from mobly.snippet import errors as snippet_errors

from ui_automator import errors
from ui_automator import ui_automator


class UIAutomatorTest(unittest.TestCase):

  def setUp(self):
    """This method will be run before each of the test methods in the class."""
    super().setUp()
    self.ui_automator = ui_automator.UIAutomator()
    self.mock_android_device = mock.patch.object(
        android_device, 'AndroidDevice'
    ).start()

  @mock.patch.object(android_device, 'get_all_instances', autospec=True)
  def test_load_device_raises_an_error_when_adb_not_installed(
      self, mock_get_all_instances
  ):
    mock_get_all_instances.side_effect = adb.AdbError(
        cmd='adb devices',
        stdout='fake_msg',
        stderr='adb command not found',
        ret_code=1,
    )
    with self.assertRaisesRegex(
        errors.AdbError,
        r'Please install adb and add it to your PATH environment variable\.',
    ):
      self.ui_automator.load_device()

  @mock.patch.object(
      android_device, 'get_all_instances', autospec=True, return_value=[]
  )
  def test_load_device_no_android_device_error(
      self, unused_mock_get_all_instances
  ):
    with self.assertRaises(errors.NoAndroidDeviceError):
      self.ui_automator.load_device()

  @mock.patch.object(
      android_device, 'get_all_instances', autospec=True, return_value=[1, 2]
  )
  def test_load_device_success(self, unused_mock_get_all_instances):
    with self.assertLogs() as cm:
      self.ui_automator.load_device()
    self.assertEqual(cm.output, ['INFO:root:connected device: [1]'])

  def test_load_snippet_without_load_device_raises_error(self):
    with self.assertRaises(errors.NoAndroidDeviceError):
      self.ui_automator.load_snippet()

  @mock.patch.object(android_device, 'get_all_instances', autospec=True)
  def test_load_snippet_success(self, mock_get_all_instances):
    mock_get_all_instances.return_value = [self.mock_android_device]

    self.ui_automator.load_device()
    self.ui_automator.load_snippet()

  @mock.patch.object(android_device, 'get_all_instances', autospec=True)
  def test_load_snippet_fails_with_server_start_pre_check_error(
      self, mock_get_all_instances
  ):
    self.mock_android_device.load_snippet.side_effect = (
        snippet_errors.ServerStartPreCheckError('fake_ad', 'fake_msg')
    )
    mock_get_all_instances.return_value = [self.mock_android_device]

    self.ui_automator.load_device()

    with self.assertRaises(errors.AndroidDeviceNotReadyError):
      self.ui_automator.load_snippet()

  @mock.patch.object(android_device, 'get_all_instances', autospec=True)
  def test_load_snippet_fails_with_server_start_error(
      self, mock_get_all_instances
  ):
    self.mock_android_device.load_snippet.side_effect = (
        snippet_errors.ServerStartError('fake_ad', 'fake_msg')
    )
    mock_get_all_instances.return_value = [self.mock_android_device]

    self.ui_automator.load_device()

    with self.assertRaises(errors.AndroidDeviceNotReadyError):
      self.ui_automator.load_snippet()

  @mock.patch.object(android_device, 'get_all_instances', autospec=True)
  def test_load_snippet_fails_with_protocol_error(self, mock_get_all_instances):
    self.mock_android_device.load_snippet.side_effect = (
        snippet_errors.ProtocolError('fake_ad', 'fake_msg')
    )
    mock_get_all_instances.return_value = [self.mock_android_device]

    self.ui_automator.load_device()

    with self.assertRaises(errors.AndroidDeviceNotReadyError):
      self.ui_automator.load_snippet()

  @mock.patch.object(android_device, 'get_all_instances', autospec=True)
  def test_load_snippet_fails_with_snippet_error(self, mock_get_all_instances):
    self.mock_android_device.load_snippet.side_effect = (
        android_device.SnippetError('fake_device', 'fake_msg')
    )
    mock_get_all_instances.return_value = [self.mock_android_device]

    self.ui_automator.load_device()

    with self.assertLogs(level='DEBUG') as cm:
      self.ui_automator.load_snippet()
    self.assertEqual(
        cm.output,
        [
            "DEBUG:root:'fake_device'::Service<SnippetManagementService>"
            ' fake_msg'
        ],
    )

  @mock.patch.object(android_device, 'get_all_instances', autospec=True)
  @mock.patch.object(
      os.path, 'dirname', autospec=True, return_value='/path/to/'
  )
  def test_load_snippet_installs_apk_when_apk_is_not_installed(
      self, mock_dirname, mock_get_all_instances
  ):
    self.mock_android_device.adb.shell.return_value = (
        b'package:installed.apk\n'
    )
    mock_get_all_instances.return_value = [self.mock_android_device]
    self.ui_automator.load_device()

    self.ui_automator.load_snippet()

    self.mock_android_device.adb.install.assert_called_once_with(
        ['-r', '-g', '/path/to/android/app/snippet-0.0.0.apk']
    )
    mock_dirname.assert_called_once()

  @mock.patch.object(android_device, 'get_all_instances', autospec=True)
  @mock.patch.object(os.path, 'dirname', autospec=True)
  def test_load_snippet_should_not_install_apk_when_apk_is_installed(
      self, mock_dirname, mock_get_all_instances
  ):
    self.mock_android_device.adb.shell.return_value = (
        b'package:com.chip.interop.moblysnippet'
    )
    mock_get_all_instances.return_value = [self.mock_android_device]
    self.ui_automator.load_device()

    self.ui_automator.load_snippet()

    self.mock_android_device.adb.install.assert_not_called()
    mock_dirname.assert_not_called()


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