Upstream: Test scripts for Android (phase 2)

build/android/base_test_runner.py

+#!/usr/bin/python
+# Copyright (c) 2011 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 logging
+import os
+
+import android_commands
+from chrome_test_server_spawner import SpawningServer
+from flag_changer import FlagChanger
+import lighttpd_server
+import run_tests_helper
+
+FORWARDER_PATH = '/data/local/tmp/forwarder'
+# These ports must match up with the constants in net/test/test_server.cc
+TEST_SERVER_SPAWNER_PORT = 8001
+TEST_SERVER_PORT = 8002
+TEST_SYNC_SERVER_PORT = 8003
+
+
+class BaseTestRunner(object):
+  """Base class for running tests on a single device."""
+
+  def __init__(self, device):
+    """
+      Args:
+        device: Tests will run on the device of this ID.
+    """
+    self.device = device
+    self.adb = android_commands.AndroidCommands(device=device)
+    # Synchronize date/time between host and device. Otherwise same file on
+    # host and device may have different timestamp which may cause
+    # AndroidCommands.PushIfNeeded failed, or a test which may compare timestamp
+    # got from http head and local time could be failed.
+    self.adb.SynchronizeDateTime()
+    self._http_server = None
+    self._forwarder = None
+    self._spawning_server = None
+    self._spawner_forwarder = None
+    self._forwarder_device_port = 8000
+    self._forwarder_base_url = ('http://localhost:%d' %
+        self._forwarder_device_port)
+    self._flags = FlagChanger(self.adb)
+
+  def RunTests(self):
+    # TODO(bulach): this should actually do SetUp / RunTestsInternal / TearDown.
+    # Refactor the various subclasses to expose a RunTestsInternal without
+    # any params.
+    raise NotImplementedError
+
+  def SetUp(self):
+    """Called before tests run."""
+    pass
+
+  def TearDown(self):
+    """Called when tests finish running."""
+    self.ShutdownHelperToolsForTestSuite()
+
+  def CopyTestData(self, test_data_paths, dest_dir):
+    """Copies |test_data_paths| list of files/directories to |dest_dir|.
+
+    Args:
+      test_data_paths: A list of files or directories relative to |dest_dir|
+          which should be copied to the device. The paths must exist in
+          |CHROME_DIR|.
+      dest_dir: Absolute path to copy to on the device.
+    """
+    for p in test_data_paths:
+      self.adb.PushIfNeeded(
+          os.path.join(run_tests_helper.CHROME_DIR, p),
+          os.path.join(dest_dir, p))
+
+  def LaunchTestHttpServer(self, document_root, extra_config_contents=None):
+    """Launches an HTTP server to serve HTTP tests.
+
+    Args:
+      document_root: Document root of the HTTP server.
+      extra_config_contents: Extra config contents for the HTTP server.
+    """
+    self._http_server = lighttpd_server.LighttpdServer(
+        document_root, extra_config_contents=extra_config_contents)
+    if self._http_server.StartupHttpServer():
+      logging.info('http server started: http://localhost:%s',
+                   self._http_server.port)
+    else:
+      logging.critical('Failed to start http server')
+    # Root access needed to make the forwarder executable work.
+    self.adb.EnableAdbRoot()
+    self.StartForwarderForHttpServer()
+
+  def StartForwarderForHttpServer(self):
+    """Starts a forwarder for the HTTP server.
+
+    The forwarder forwards HTTP requests and responses between host and device.
+    """
+    # Sometimes the forwarder device port may be already used. We have to kill
+    # all forwarder processes to ensure that the forwarder can be started since
+    # currently we can not associate the specified port to related pid.
+    # TODO(yfriedman/wangxianzhu): This doesn't work as most of the time the
+    # port is in use but the forwarder is already dead. Killing all forwarders
+    # is overly destructive and breaks other tests which make use of forwarders.
+    # if IsDevicePortUsed(self.adb, self._forwarder_device_port):
+    #   self.adb.KillAll('forwarder')
+    self._forwarder = run_tests_helper.ForwardDevicePorts(
+        self.adb, [(self._forwarder_device_port, self._http_server.port)])
+
+  def RestartHttpServerForwarderIfNecessary(self):
+    """Restarts the forwarder if it's not open."""
+    # Checks to see if the http server port is being used.  If not forwards the
+    # request.
+    # TODO(dtrainor): This is not always reliable because sometimes the port
+    # will be left open even after the forwarder has been killed.
+    if not run_tests_helper.IsDevicePortUsed(self.adb,
+        self._forwarder_device_port):
+      self.StartForwarderForHttpServer()
+
+  def ShutdownHelperToolsForTestSuite(self):
+    """Shuts down the server and the forwarder."""
+    # Forwarders should be killed before the actual servers they're forwarding
+    # to as they are clients potentially with open connections and to allow for
+    # proper hand-shake/shutdown.
+    if self._forwarder or self._spawner_forwarder:
+      # Kill all forwarders on the device and then kill the process on the host
+      # (if it exists)
+      self.adb.KillAll('forwarder')
+      if self._forwarder:
+        self._forwarder.kill()
+      if self._spawner_forwarder:
+        self._spawner_forwarder.kill()
+    if self._http_server:
+      self._http_server.ShutdownHttpServer()
+    if self._spawning_server:
+      self._spawning_server.Stop()
+    self._flags.Restore()
+
+  def LaunchChromeTestServerSpawner(self):
+    """Launches test server spawner."""
+    self._spawning_server = SpawningServer(TEST_SERVER_SPAWNER_PORT,
+                                          TEST_SERVER_PORT)
+    self._spawning_server.Start()
+    # TODO(yfriedman): Ideally we'll only try to start up a port forwarder if
+    # there isn't one already running but for now we just get an error message
+    # and the existing forwarder still works.
+    self._spawner_forwarder = run_tests_helper.ForwardDevicePorts(
+        self.adb, [(TEST_SERVER_SPAWNER_PORT, TEST_SERVER_SPAWNER_PORT),
+                   (TEST_SERVER_PORT, TEST_SERVER_PORT)])