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."""
10 from pylib import android_commands
11 from pylib import ports
12 from pylib.chrome_test_server_spawner import SpawningServer
13 from pylib.forwarder import Forwarder
14 from pylib.valgrind_tools import CreateTool
15 # TODO(frankf): Move this to pylib/utils
16 import lighttpd_server
19 # A file on device to store ports of net test server. The format of the file is
20 # test-spawner-server-port:test-server-port
21 NET_TEST_SERVER_PORT_INFO_FILE = 'net-test-server-ports'
24 class BaseTestRunner(object):
25 """Base class for running tests on a single device."""
27 def __init__(self, device, tool, push_deps=True, cleanup_test_files=False):
30 device: Tests will run on the device of this ID.
31 tool: Name of the Valgrind tool.
32 push_deps: If True, push all dependencies to the device.
33 cleanup_test_files: Whether or not to cleanup test files on device.
36 self.adb = android_commands.AndroidCommands(device=device)
37 self.tool = CreateTool(tool, self.adb)
38 self._http_server = None
39 self._forwarder_device_port = 8000
40 self.forwarder_base_url = ('http://localhost:%d' %
41 self._forwarder_device_port)
42 self._spawning_server = None
43 # We will allocate port for test server spawner when calling method
44 # LaunchChromeTestServerSpawner and allocate port for test server when
45 # starting it in TestServerThread.
46 self.test_server_spawner_port = 0
47 self.test_server_port = 0
48 self._push_deps = push_deps
49 self._cleanup_test_files = cleanup_test_files
51 def _PushTestServerPortInfoToDevice(self):
52 """Pushes the latest port information to device."""
53 self.adb.SetFileContents(self.adb.GetExternalStorage() + '/' +
54 NET_TEST_SERVER_PORT_INFO_FILE,
55 '%d:%d' % (self.test_server_spawner_port,
56 self.test_server_port))
58 def RunTest(self, test):
59 """Runs a test. Needs to be overridden.
66 (base_test_result.TestRunResults, tests to rerun or None)
68 raise NotImplementedError
70 def InstallTestPackage(self):
71 """Installs the test package once before all tests are run."""
74 def PushDataDeps(self):
75 """Push all data deps to device once before all tests are run."""
79 """Run once before all tests are run."""
80 self.InstallTestPackage()
81 push_size_before = self.adb.GetPushSizeInfo()
83 logging.warning('Pushing data files to device.')
85 push_size_after = self.adb.GetPushSizeInfo()
87 'Total data: %0.3fMB' %
88 ((push_size_after[0] - push_size_before[0]) / float(2 ** 20)))
90 'Total data transferred: %0.3fMB' %
91 ((push_size_after[1] - push_size_before[1]) / float(2 ** 20)))
93 logging.warning('Skipping pushing data to device.')
96 """Run once after all tests are run."""
97 self.ShutdownHelperToolsForTestSuite()
98 if self._cleanup_test_files:
99 self.adb.RemovePushedFiles()
101 def LaunchTestHttpServer(self, document_root, port=None,
102 extra_config_contents=None):
103 """Launches an HTTP server to serve HTTP tests.
106 document_root: Document root of the HTTP server.
107 port: port on which we want to the http server bind.
108 extra_config_contents: Extra config contents for the HTTP server.
110 self._http_server = lighttpd_server.LighttpdServer(
111 document_root, port=port, extra_config_contents=extra_config_contents)
112 if self._http_server.StartupHttpServer():
113 logging.info('http server started: http://localhost:%s',
114 self._http_server.port)
116 logging.critical('Failed to start http server')
117 self._ForwardPortsForHttpServer()
118 return (self._forwarder_device_port, self._http_server.port)
120 def _ForwardPorts(self, port_pairs):
121 """Forwards a port."""
122 Forwarder.Map(port_pairs, self.adb, self.tool)
124 def _UnmapPorts(self, port_pairs):
125 """Unmap previously forwarded ports."""
126 for (device_port, _) in port_pairs:
127 Forwarder.UnmapDevicePort(device_port, self.adb)
129 # Deprecated: Use ForwardPorts instead.
130 def StartForwarder(self, port_pairs):
131 """Starts TCP traffic forwarding for the given |port_pairs|.
134 host_port_pairs: A list of (device_port, local_port) tuples to forward.
136 self._ForwardPorts(port_pairs)
138 def _ForwardPortsForHttpServer(self):
139 """Starts a forwarder for the HTTP server.
141 The forwarder forwards HTTP requests and responses between host and device.
143 self._ForwardPorts([(self._forwarder_device_port, self._http_server.port)])
145 def _RestartHttpServerForwarderIfNecessary(self):
146 """Restarts the forwarder if it's not open."""
147 # Checks to see if the http server port is being used. If not forwards the
149 # TODO(dtrainor): This is not always reliable because sometimes the port
150 # will be left open even after the forwarder has been killed.
151 if not ports.IsDevicePortUsed(self.adb, self._forwarder_device_port):
152 self._ForwardPortsForHttpServer()
154 def ShutdownHelperToolsForTestSuite(self):
155 """Shuts down the server and the forwarder."""
156 if self._http_server:
157 self._UnmapPorts([(self._forwarder_device_port, self._http_server.port)])
158 self._http_server.ShutdownHttpServer()
159 if self._spawning_server:
160 self._spawning_server.Stop()
162 def CleanupSpawningServerState(self):
163 """Tells the spawning server to clean up any state.
165 If the spawning server is reused for multiple tests, this should be called
166 after each test to prevent tests affecting each other.
168 if self._spawning_server:
169 self._spawning_server.CleanupState()
171 def LaunchChromeTestServerSpawner(self):
172 """Launches test server spawner."""
175 # TODO(pliard): deflake this function. The for loop should be removed as
176 # well as IsHttpServerConnectable(). spawning_server.Start() should also
177 # block until the server is ready.
178 # Try 3 times to launch test spawner server.
179 for _ in xrange(0, 3):
180 self.test_server_spawner_port = ports.AllocateTestServerPort()
182 [(self.test_server_spawner_port, self.test_server_spawner_port)])
183 self._spawning_server = SpawningServer(self.test_server_spawner_port,
186 self._spawning_server.Start()
187 server_ready, error_msg = ports.IsHttpServerConnectable(
188 '127.0.0.1', self.test_server_spawner_port, path='/ping',
189 expected_read='ready')
193 error_msgs.append(error_msg)
194 self._spawning_server.Stop()
195 # Wait for 2 seconds then restart.
198 logging.error(';'.join(error_msgs))
199 raise Exception('Can not start the test spawner server.')
200 self._PushTestServerPortInfoToDevice()