build/android/pylib/base/environment.py

   1 # Copyright 2014 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
   6 class Environment(object):
   7   """An environment in which tests can be run.
   8
   9   This is expected to handle all logic that is applicable to an entire specific
  10   environment but is independent of the test type.
  11
  12   Examples include:
  13     - The local device environment, for running tests on devices attached to
  14       the local machine.
  15     - The local machine environment, for running tests directly on the local
  16       machine.
  17   """
  18
  19   def __init__(self):
  20     pass
  21
  22   def SetUp(self):
  23     raise NotImplementedError
  24
  25   def TearDown(self):
  26     raise NotImplementedError
  27
  28   def __enter__(self):
  29     self.SetUp()
  30     return self
  31
  32   def __exit__(self, _exc_type, _exc_val, _exc_tb):
  33     self.TearDown()
  34