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1# Copyright (c) 2011 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 dbus
6
7from autotest_lib.client.bin import test
8from autotest_lib.client.common_lib import error
9
10class platform_DebugDaemonTracePath(test.test):
11    version = 1
12
13    def run_once(self, *args, **kwargs):
14        bus = dbus.SystemBus()
15        proxy = bus.get_object('org.chromium.debugd', '/org/chromium/debugd')
16        self.iface = dbus.Interface(proxy,
17                                    dbus_interface='org.chromium.debugd')
18        handle = self.iface.TracePathStart(
19            1, "127.0.0.1", {}, signature="hsa{sv}")
20        self.iface.TracePathStop(handle)
21        got_exception = False
22        try:
23            self.iface.TracePathStop(handle)
24        except dbus.DBusException as e:
25            if e.get_dbus_name() == 'org.chromium.debugd.error.NoSuchProcess':
26                got_exception = True
27            else:
28                print "Unexpected exception %s" % e.get_dbus_name()
29        if not got_exception:
30            raise error.TestFail("Didn't get expected exception.")
31