1 # Copyright (c) 2012 The Chromium 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.
5 """Base class for running tests on a single device."""
7 # TODO(jbudorick) Deprecate and remove this class and all subclasses after
8 # any relevant parts have been ported to the new environment + test instance
14 from pylib import ports
15 from pylib.chrome_test_server_spawner import SpawningServer
16 from pylib.device import device_utils
17 from pylib.forwarder import Forwarder
18 from pylib.valgrind_tools import CreateTool
19 # TODO(frankf): Move this to pylib/utils
20 import lighttpd_server
23 # A file on device to store ports of net test server. The format of the file is
24 # test-spawner-server-port:test-server-port
25 NET_TEST_SERVER_PORT_INFO_FILE = 'net-test-server-ports'
28 class BaseTestRunner(object):
29 """Base class for running tests on a single device."""
31 def __init__(self, device_serial, tool, cleanup_test_files=False):
34 device: Tests will run on the device of this ID.
35 tool: Name of the Valgrind tool.
36 cleanup_test_files: Whether or not to cleanup test files on device.
38 self.device_serial = device_serial
39 self.device = device_utils.DeviceUtils(device_serial)
40 self.tool = CreateTool(tool, self.device)
41 self._http_server = None
42 self._forwarder_device_port = 8000
43 self.forwarder_base_url = ('http://localhost:%d' %
44 self._forwarder_device_port)
45 self._spawning_server = None
46 # We will allocate port for test server spawner when calling method
47 # LaunchChromeTestServerSpawner and allocate port for test server when
48 # starting it in TestServerThread.
49 self.test_server_spawner_port = 0
50 self.test_server_port = 0
51 self._cleanup_test_files = cleanup_test_files
53 def _PushTestServerPortInfoToDevice(self):
54 """Pushes the latest port information to device."""
55 self.device.WriteFile(
56 self.device.GetExternalStoragePath() + '/' +
57 NET_TEST_SERVER_PORT_INFO_FILE,
58 '%d:%d' % (self.test_server_spawner_port, self.test_server_port))
60 def RunTest(self, test):
61 """Runs a test. Needs to be overridden.
68 (base_test_result.TestRunResults, tests to rerun or None)
70 raise NotImplementedError
72 def InstallTestPackage(self):
73 """Installs the test package once before all tests are run."""
76 def PushDataDeps(self):
77 """Push all data deps to device once before all tests are run."""
81 """Run once before all tests are run."""
82 self.InstallTestPackage()
86 """Run once after all tests are run."""
87 self.ShutdownHelperToolsForTestSuite()
88 if self._cleanup_test_files:
89 self.device.old_interface.RemovePushedFiles()
91 def LaunchTestHttpServer(self, document_root, port=None,
92 extra_config_contents=None):
93 """Launches an HTTP server to serve HTTP tests.
96 document_root: Document root of the HTTP server.
97 port: port on which we want to the http server bind.
98 extra_config_contents: Extra config contents for the HTTP server.
100 self._http_server = lighttpd_server.LighttpdServer(
101 document_root, port=port, extra_config_contents=extra_config_contents)
102 if self._http_server.StartupHttpServer():
103 logging.info('http server started: http://localhost:%s',
104 self._http_server.port)
106 logging.critical('Failed to start http server')
107 self._ForwardPortsForHttpServer()
108 return (self._forwarder_device_port, self._http_server.port)
110 def _ForwardPorts(self, port_pairs):
111 """Forwards a port."""
112 Forwarder.Map(port_pairs, self.device, self.tool)
114 def _UnmapPorts(self, port_pairs):
115 """Unmap previously forwarded ports."""
116 for (device_port, _) in port_pairs:
117 Forwarder.UnmapDevicePort(device_port, self.device)
119 # Deprecated: Use ForwardPorts instead.
120 def StartForwarder(self, port_pairs):
121 """Starts TCP traffic forwarding for the given |port_pairs|.
124 host_port_pairs: A list of (device_port, local_port) tuples to forward.
126 self._ForwardPorts(port_pairs)
128 def _ForwardPortsForHttpServer(self):
129 """Starts a forwarder for the HTTP server.
131 The forwarder forwards HTTP requests and responses between host and device.
133 self._ForwardPorts([(self._forwarder_device_port, self._http_server.port)])
135 def _RestartHttpServerForwarderIfNecessary(self):
136 """Restarts the forwarder if it's not open."""
137 # Checks to see if the http server port is being used. If not forwards the
139 # TODO(dtrainor): This is not always reliable because sometimes the port
140 # will be left open even after the forwarder has been killed.
141 if not ports.IsDevicePortUsed(self.device, self._forwarder_device_port):
142 self._ForwardPortsForHttpServer()
144 def ShutdownHelperToolsForTestSuite(self):
145 """Shuts down the server and the forwarder."""
146 if self._http_server:
147 self._UnmapPorts([(self._forwarder_device_port, self._http_server.port)])
148 self._http_server.ShutdownHttpServer()
149 if self._spawning_server:
150 self._spawning_server.Stop()
152 def CleanupSpawningServerState(self):
153 """Tells the spawning server to clean up any state.
155 If the spawning server is reused for multiple tests, this should be called
156 after each test to prevent tests affecting each other.
158 if self._spawning_server:
159 self._spawning_server.CleanupState()
161 def LaunchChromeTestServerSpawner(self):
162 """Launches test server spawner."""
165 # TODO(pliard): deflake this function. The for loop should be removed as
166 # well as IsHttpServerConnectable(). spawning_server.Start() should also
167 # block until the server is ready.
168 # Try 3 times to launch test spawner server.
169 for _ in xrange(0, 3):
170 self.test_server_spawner_port = ports.AllocateTestServerPort()
172 [(self.test_server_spawner_port, self.test_server_spawner_port)])
173 self._spawning_server = SpawningServer(self.test_server_spawner_port,
176 self._spawning_server.Start()
177 server_ready, error_msg = ports.IsHttpServerConnectable(
178 '127.0.0.1', self.test_server_spawner_port, path='/ping',
179 expected_read='ready')
183 error_msgs.append(error_msg)
184 self._spawning_server.Stop()
185 # Wait for 2 seconds then restart.
188 logging.error(';'.join(error_msgs))
189 raise Exception('Can not start the test spawner server.')
190 self._PushTestServerPortInfoToDevice()