| # Copyright 2016 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging |
| import time |
| |
| from autotest_lib.client.bin import test |
| from autotest_lib.client.bin import utils |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.common_lib.cros import chrome |
| from autotest_lib.client.cros.graphics import graphics_utils |
| from autotest_lib.client.cros.input_playback import input_playback |
| |
| BRIGHTNESS_LEVELS = 16 |
| |
| class platform_InputBrightness(test.test): |
| """Tests if device suspends using shortcut keys.""" |
| version = 1 |
| BRIGHTNESS_CMD = "backlight_tool --get_brightness_percent" |
| RESET_BRIGHTNESS_CMD = "backlight_tool --set_brightness_percent=70.0" |
| WAIT_TIME = 1 |
| |
| def warmup(self): |
| """Test setup.""" |
| # Emulate keyboard. |
| # See input_playback. The keyboard is used to play back shortcuts. |
| self._player = input_playback.InputPlayback() |
| self._player.emulate(input_type='keyboard') |
| self._player.find_connected_inputs() |
| |
| def test_brightness_down(self, verify_brightness=True): |
| """ |
| Use keyboard shortcut to test brightness Down (F6) key. |
| |
| @raises: error.TestFail if system brightness did not decrease. |
| |
| """ |
| for level in range(0, BRIGHTNESS_LEVELS): |
| logging.debug("Decreasing the brightness. Level %s", level) |
| sys_brightness = self.get_system_brightness() |
| self._player.blocking_playback_of_default_file( |
| input_type='keyboard', filename='keyboard_f6') |
| time.sleep(self.WAIT_TIME) |
| if verify_brightness: |
| if not sys_brightness > self.get_system_brightness(): |
| raise error.TestFail("Brightness did not decrease from: " |
| "%s" % sys_brightness) |
| |
| def test_brightness_up(self, verify_brightness=True): |
| """ |
| Use keyboard shortcut to test brightness Up (F7) key. |
| |
| @raises: error.TestFail if system brightness did not increase. |
| |
| """ |
| for level in range(0, BRIGHTNESS_LEVELS): |
| logging.debug("Increasing the brightness. Level %s", level) |
| sys_brightness = self.get_system_brightness() |
| self._player.blocking_playback_of_default_file( |
| input_type='keyboard', filename='keyboard_f7') |
| time.sleep(self.WAIT_TIME) |
| if verify_brightness: |
| if not sys_brightness < self.get_system_brightness(): |
| raise error.TestFail("Brightness did not increase from: " |
| "%s" % sys_brightness) |
| |
| def get_system_brightness(self): |
| """ |
| Get current system brightness percent (0.0-100.0). |
| |
| @returns: current system brightness. |
| """ |
| sys_brightness = utils.system_output(self.BRIGHTNESS_CMD) |
| return float(sys_brightness) |
| |
| |
| def run_once(self): |
| """ |
| Open browser, and affect brightness using up and down functions. |
| |
| @raises: error.TestFail if brightness keys (F6/F7) did not work. |
| |
| """ |
| # Check for internal_display |
| if not graphics_utils.has_internal_display(): |
| raise error.TestNAError('Test can not proceed on ' |
| 'devices without internal display.') |
| with chrome.Chrome(): |
| logging.info("Increasing the initial brightness to max without " |
| "verifying brightness.") |
| # Not using command to set max brightness because |
| # the brightness button stays at the current level |
| # only irrespective of the command |
| self.test_brightness_up(verify_brightness=False) |
| # Actual test starts from here. |
| self.test_brightness_down(verify_brightness=True) |
| self.test_brightness_up(verify_brightness=True) |
| |
| |
| def cleanup(self): |
| """Test cleanup.""" |
| self._player.close() |
| utils.system_output(self.RESET_BRIGHTNESS_CMD) |
