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/.
  
  import time
  
  from gaiatest import GaiaTestCase
  from gaiatest.apps.camera.app import Camera
  from gaiatest.apps.camera.app import ImagePreview
  
  try:
      from marionette.wait import Wait
  except:
      from marionette_driver.wait import Wait
  
  
  class TestPreviewDelete(GaiaTestCase):
      def setUp(self):
          GaiaTestCase.setUp(self)
  
          # Turn off geolocation prompt
          self.apps.set_permission('Camera', 'geolocation', 'deny')
  
      def test_capture_and_delete_video(self):
          """
          https://moztrap.mozilla.org/manage/case/3324/
          """
          self.previous_number_of_videos = len(self.data_layer.video_files)
  
          # launch camera app
          self.camera = Camera(self.marionette)
          self.camera.launch()
  
          # Switch to video mode
          self.camera.tap_switch_source()
  
          # Record 10 seconds of video
          self.camera.record_video(10)
  
          # Check that video saved to SD card
          self.assertEqual(len(self.data_layer.video_files), self.previous_number_of_videos + 1)
  
          # Tap preview icon to see the video that's just taken
          self.camera.tap_thumbnail()
          self.preview = ImagePreview(self.marionette)
          Wait(self.marionette).until(lambda m: self.preview.is_video_play_button_visible is True)
  
          # Play video, then pause it
          self.preview.tap_video_player_play_button()
          time.sleep(5)
          self.preview.tap_video_player_pause_button()
  
          # Tape the options icon, and delete the file
          self.preview.delete_file()
  
          # Check the user is back in camera preview mode, and there is no preview icon anymore
          Wait(self.marionette).until(lambda m: self.camera.is_thumbnail_visible is False)
  
          # Verify the video is deleted now
          self.assertEqual(len(self.data_layer.video_files), self.previous_number_of_videos)
  