chrome/test/mini_installer/process_verifier.py

   1 # Copyright 2013 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.
   4
   5 import chrome_helper
   6 import verifier
   7
   8
   9 class ProcessVerifier(verifier.Verifier):
  10   """Verifies that the running processes match the expectation dictionaries."""
  11
  12   def _VerifyExpectation(self, expectation_name, expectation,
  13                          variable_expander):
  14     """Overridden from verifier.Verifier.
  15
  16     This method will throw an AssertionError if process state doesn't match the
  17     |expectation|.
  18
  19     Args:
  20       expectation_name: Path to the process being verified. It is expanded using
  21           Expand.
  22       expectation: A dictionary with the following key and value:
  23           'running' a boolean indicating whether the process should be running.
  24       variable_expander: A VariableExpander object.
  25     """
  26     # Create a list of paths of all running processes.
  27     running_process_paths = [path for (_, path) in
  28                              chrome_helper.GetProcessIDAndPathPairs()]
  29     process_path = variable_expander.Expand(expectation_name)
  30     is_running = process_path in running_process_paths
  31     assert expectation['running'] == is_running, \
  32         ('Process %s is running' % process_path) if is_running else \
  33         ('Process %s is not running' % process_path)