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# Copyright 2016 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.
import threading
import unittest
from devil.android import device_errors
from devil.android import device_utils
_devices_lock = threading.Lock()
_devices_condition = threading.Condition(_devices_lock)
_devices = set()
def PrepareDevices(*_args):
raw_devices = device_utils.DeviceUtils.HealthyDevices()
live_devices = []
for d in raw_devices:
try:
d.WaitUntilFullyBooted(timeout=5, retries=0)
live_devices.append(str(d))
except (device_errors.CommandFailedError, device_errors.CommandTimeoutError,
device_errors.DeviceUnreachableError):
pass
with _devices_lock:
_devices.update(set(live_devices))
if not _devices:
raise Exception('No live devices attached.')
class DeviceTestCase(unittest.TestCase):
def __init__(self, *args, **kwargs):
super(DeviceTestCase, self).__init__(*args, **kwargs)
self.serial = None
#override
def setUp(self):
super(DeviceTestCase, self).setUp()
with _devices_lock:
while not _devices:
_devices_condition.wait(5)
self.serial = _devices.pop()
#override
def tearDown(self):
super(DeviceTestCase, self).tearDown()
with _devices_lock:
_devices.add(self.serial)
_devices_condition.notify()
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