Extensions to the mock library
copied from cf-staging / mockextrasThe mockextras library is designed to be used with the unittest.mock library in python 3 or the mock backport of this (http://www.voidspace.org.uk/python/mock/) in python 2. The mockextras library adds a number of features that are found in other mocking libraries namely: * a fluent API for the configuration of stubs * stubs * matchers