blob: cb60bf9bd77e5157a5ebf33221f825c602ad2fe2 [file] [log] [blame]
# Copyright (c) 2010 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
__author__ = ' (Kelly Lucas)'
import os, re
from autotest_lib.client.bin import test, utils
from autotest_lib.client.common_lib import error
class hardware_Resolution(test.test):
Verify the current screen resolution is supported.
version = 1
def get_xrandr_output(self):
Retrieves the output of xrandr as a list of strings.
cmd = 'xrandr'
# TODO:remove oldxauth when slim is deprecated.
oldxauth = '/var/run/slim.auth'
newxauth = '/home/chronos/.Xauthority'
# The new login manager uses XAUTHORITY=/home/chronos/.Xauthority
# so we need to check which file to use.
if os.path.isfile(oldxauth):
xauth = oldxauth
xauth = newxauth
environment = 'DISPLAY=:0.0 XAUTHORITY=%s' % xauth
output = utils.system_output('%s %s' % (environment, cmd))
return output.split('\n')
def is_lvds_res(self, res, xrandr_output):
Returns True if the supplied resolution is associated with
an LVDS connection.
search_str = r'LVDS\d+ connected ' + res
for line in xrandr_output:
if re.match(search_str, line):
return True;
return False
def get_current_res(self, xrandr_output):
Get the current video resolution.
string: represents the video resolution.
for line in xrandr_output:
if 'Screen 0' in line:
sections = line.split(',')
for item in sections:
if 'current' in item:
res = item.split()
return '%s%s%s' % (res[1], res[2], res[3])
return None
def run_once(self):
xrandr_output = self.get_xrandr_output()
res = self.get_current_res(xrandr_output)
if not res or not re.match(r'\d+x\d+$', res):
raise error.TestFail('%s is not a valid resolution' % res)
supported_lvds_resolutions = ['1280x800', '1366x768']
if self.is_lvds_res(res, xrandr_output) and \
res not in supported_lvds_resolutions:
raise error.TestFail('%s is not a supported LVDS resolution' % res)