[Android] Converts host driven tests to common test_dispatcher

build/android/pylib/host_driven/python_test_base.py

-# Copyright (c) 2012 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.
-
-"""Base class for Android Python-driven tests.
-
-This test case is intended to serve as the base class for any Python-driven
-tests. It is similar to the Python unitttest module in that the user's tests
-inherit from this case and add their tests in that case.
-
-When a PythonTestBase object is instantiated, its purpose is to run only one of
-its tests. The test runner gives it the name of the test the instance will
-run. The test runner calls SetUp with the Android device ID which the test will
-run against. The runner runs the test method itself, collecting the result,
-and calls TearDown.
-
-Tests can basically do whatever they want in the test methods, such as call
-Java tests using _RunJavaTests. Those methods have the advantage of massaging
-the Java test results into Python test results.
-"""
-
-import logging
-import os
-import time
-
-from pylib import android_commands
-from pylib.base import base_test_result
-from pylib.instrumentation import test_package
-from pylib.instrumentation import test_result
-from pylib.instrumentation import test_runner
-
-
-# aka the parent of com.google.android
-BASE_ROOT = 'src' + os.sep
-
-
-class PythonTestBase(object):
-  """Base class for Python-driven tests."""
-
-  def __init__(self, test_name):
-    # test_name must match one of the test methods defined on a subclass which
-    # inherits from this class.
-    # It's stored so we can do the attr lookup on demand, allowing this class
-    # to be pickled, a requirement for the multiprocessing module.
-    self.test_name = test_name
-    class_name = self.__class__.__name__
-    self.qualified_name = class_name + '.' + self.test_name
-
-  def SetUp(self, options):
-    self.options = options
-    self.shard_index = self.options.shard_index
-    self.device_id = self.options.device_id
-    self.adb = android_commands.AndroidCommands(self.device_id)
-    self.ports_to_forward = []
-
-  def TearDown(self):
-    pass
-
-  def GetOutDir(self):
-    return os.path.join(os.environ['CHROME_SRC'], 'out',
-        self.options.build_type)
-
-  def Run(self):
-    logging.warning('Running Python-driven test: %s', self.test_name)
-    return getattr(self, self.test_name)()
-
-  def _RunJavaTest(self, fname, suite, test):
-    """Runs a single Java test with a Java TestRunner.
-
-    Args:
-      fname: filename for the test (e.g. foo/bar/baz/tests/FooTest.py)
-      suite: name of the Java test suite (e.g. FooTest)
-      test: name of the test method to run (e.g. testFooBar)
-
-    Returns:
-      TestRunResults object with a single test result.
-    """
-    test = self._ComposeFullTestName(fname, suite, test)
-    test_pkg = test_package.TestPackage(
-        self.options.test_apk_path, self.options.test_apk_jar_path)
-    java_test_runner = test_runner.TestRunner(self.options.build_type,
-                                              self.options.test_data,
-                                              self.options.install_apk,
-                                              self.options.save_perf_json,
-                                              self.options.screenshot_failures,
-                                              self.options.tool,
-                                              self.options.wait_for_debugger,
-                                              self.options.disable_assertions,
-                                              self.options.push_deps,
-                                              self.options.cleanup_test_files,
-                                              self.device_id,
-                                              self.shard_index, test_pkg,
-                                              self.ports_to_forward)
-    try:
-      java_test_runner.SetUp()
-      return java_test_runner.RunTest(test)[0]
-    finally:
-      java_test_runner.TearDown()
-
-  def _RunJavaTests(self, fname, tests):
-    """Calls a list of tests and stops at the first test failure.
-
-    This method iterates until either it encounters a non-passing test or it
-    exhausts the list of tests. Then it returns the appropriate Python result.
-
-    Args:
-      fname: filename for the Python test
-      tests: a list of Java test names which will be run
-
-    Returns:
-      A TestRunResults object containing a result for this Python test.
-    """
-    test_type = base_test_result.ResultType.PASS
-    log = ''
-
-    start_ms = int(time.time()) * 1000
-    for test in tests:
-      # We're only running one test at a time, so this TestRunResults object
-      # will hold only one result.
-      suite, test_name = test.split('.')
-      java_results = self._RunJavaTest(fname, suite, test_name)
-      assert len(java_results.GetAll()) == 1
-      if not java_results.DidRunPass():
-        result = java_results.GetNotPass().pop()
-        log = result.GetLog()
-        test_type = result.GetType()
-        break
-    duration_ms = int(time.time()) * 1000 - start_ms
-
-    python_results = base_test_result.TestRunResults()
-    python_results.AddResult(
-        test_result.InstrumentationTestResult(
-            self.qualified_name, test_type, start_ms, duration_ms, log=log))
-    return python_results
-
-  def _ComposeFullTestName(self, fname, suite, test):
-    package_name = self._GetPackageName(fname)
-    return package_name + '.' + suite + '#' + test
-
-  def _GetPackageName(self, fname):
-    """Extracts the package name from the test file path."""
-    dirname = os.path.dirname(fname)
-    package = dirname[dirname.rfind(BASE_ROOT) + len(BASE_ROOT):]
-    return package.replace(os.sep, '.')