blob: 846569dc63a56b44ec8a8f2e36c0f446de6ffcba [file] [log] [blame]
# Copyright 2012 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.
"""Tests if an interrupt's count is larger than expected.
interrupt: interrupt number or name.
reload_module: Kernel module name. If set, rmmod and modprobe it.
min_count: Minimum interrupt count to pass.
import time
import unittest
import factory_common # pylint: disable=unused-import
from cros.factory.utils.arg_utils import Arg
from cros.factory.utils import process_utils
from cros.factory.utils import sys_utils
class InterruptTest(unittest.TestCase):
"""Tests if an interrupt's count is larger than expected."""
ARGS = [
Arg('interrupt', (int, str), 'Interrupt number or name.'),
Arg('reload_module', str,
'Kernel module name. If set, rmmod and modprobe it.', default=None),
Arg('min_count', int, 'Minimum #interrupts to pass.', default=1),
def _GetInterruptCount(self, interrupt):
if isinstance(interrupt, int):
interrupt = str(interrupt)
interrupts = sys_utils.GetInterrupts()
self.assertTrue(interrupt in interrupts,
'Cannot get interrupt %s.' % interrupt)
return interrupts[interrupt]
def runTest(self):
interrupt, reload_module, min_count = (
self.args.interrupt, self.args.reload_module, self.args.min_count)
count = self._GetInterruptCount(interrupt)
if reload_module:
process_utils.Spawn(['rmmod', reload_module], call=True)
process_utils.Spawn(['modprobe', reload_module], call=True)
# Wait for procfs update
count = self._GetInterruptCount(interrupt) - count
count >= min_count,
'Interrupt test failed: int[%s] = %d < min_count %d' % (
interrupt, count, min_count))