text: # Copyright (c) 2008-2016 Szczepan Faber, Serhiy Oplakanets, Herr Kaste
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  # THE SOFTWARE.
  
  
  
  class MockRegistry:
      """Registry for mocks
  
      Registers mock()s, ensures that we only have one mock() per mocked_obj, and
      iterates over them to unstub each stubbed method.
      """
  
      def __init__(self):
          self.mocks = _Dict()
  
      def register(self, obj, mock):
          self.mocks[obj] = mock
  
      def mock_for(self, obj):
          return self.mocks.get(obj, None)
  
      def unstub(self, obj):
          try:
              mock = self.mocks.pop(obj)
          except KeyError:
              pass
          else:
              mock.unstub()
  
      def unstub_all(self):
          for mock in self.get_registered_mocks():
              mock.unstub()
          self.mocks.clear()
  
      def get_registered_mocks(self):
          return self.mocks.values()
  
  
  # We have this dict like because we want non-hashable items in our registry.
  # This is just enough to match the invoking code above. TBC
  class _Dict(object):
      def __init__(self):
          self._store = []
  
      def __setitem__(self, key, value):
          self.remove(key)
          self._store.append((key, value))
  
      def remove(self, key):
          self._store = [(k, v) for k, v in self._store if k != key]
  
      def pop(self, key):
          rv = self.get(key)
          if rv is not None:
              self.remove(key)
              return rv
          else:
              raise KeyError()
  
      def get(self, key, default=None):
          for k, value in self._store:
              if k == key:
                  return value
          return default
  
      def values(self):
          return [v for k, v in self._store]
  
      def clear(self):
          self._store[:] = []
  
  
  mock_registry = MockRegistry()
  