1# Copyright (c) 2014 The Chromium OS Authors. All rights reserved. 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5import logging 6import os 7 8from autotest_lib.client.bin import test 9from autotest_lib.client.bin import utils 10from autotest_lib.client.common_lib import error 11 12 13_EXPECTED_FILE = 'expected' 14 15 16class platform_KernelVersionByBoard(test.test): 17 """ Compare kernel version of a build to expected value. """ 18 19 version = 1 20 21 def _expected_kernel(self, board): 22 """ Return expected kernel version number from file. 23 24 @return: string of expected kernel version (e.g. '3.4') 25 """ 26 with open(os.path.join(self.bindir, _EXPECTED_FILE)) as file_handle: 27 for line in file_handle: 28 file_board, expected = line.split() 29 if board == file_board: 30 logging.info('Expected Kernel Version for %s: %s', board, 31 expected) 32 return expected.strip() 33 34 actual = self._actual_kernel(board) 35 raise error.TestError('Could not find expected kernel version for ' 36 '%s. Should it be added? Actual is %s.' 37 % (board, actual)) 38 39 def _actual_kernel(self, board): 40 """ Return actual kernel version number from device. 41 42 @returns: string of actual kernel version (e.g. '3.8.11') 43 """ 44 return utils.system_output('uname -r') 45 46 def run_once(self): 47 """ Compare expected and actual kernel versions. """ 48 board = utils.get_current_board() 49 actual = self._actual_kernel(board) 50 expected = self._expected_kernel(board) 51 if not actual.startswith(expected): 52 raise error.TestFail('%s: Expected kernel version %s; Found %s' 53 % (board, expected, actual)) 54 55