text: # This Source Code Form is subject to the terms of the Mozilla Public
  # License, v. 2.0. If a copy of the MPL was not distributed with this
  # file, You can obtain one at http://mozilla.org/MPL/2.0/.
  
  from marionette.by import By
  from gaiatest import GaiaTestCase
  from gaiatest.apps.lockscreen.app import LockScreen
  
  
  class TestLockScreenAccessibility(GaiaTestCase):
  
      def setUp(self):
          GaiaTestCase.setUp(self)
          self.apps.set_permission('Camera', 'geolocation', 'deny')
          self.device.lock()
  
      def test_a11y_unlock_to_camera(self):
          lock_screen = LockScreen(self.marionette)
          lockScreen_window = self.marionette.find_element(*lock_screen._lockscreen_window_locator)
          camera_locator = (By.CSS_SELECTOR, '[data-manifest-name="Camera"]')
  
          self.assertFalse(self.accessibility.is_hidden(lockScreen_window))
          self.assertFalse(self.is_element_present(*camera_locator))
  
          camera = lock_screen.a11y_click_camera_button()
          lock_screen.wait_for_lockscreen_not_visible()
          self.assertEquals(self.apps.displayed_app.name, camera.name)
  
          self.assertTrue(self.accessibility.is_hidden(lockScreen_window))
          self.assertFalse(self.accessibility.is_hidden(self.marionette.find_element(
              *camera_locator)))
  
          camera.switch_to_camera_frame()
          camera.wait_for_capture_ready()
  