new_contents: from expects import expect, be
  from doublex import Spy
  from doublex_expects import have_been_called
  
  from pysellus import integrations
  from pysellus.integrations import on_failure
  
  
  with description('the integrations module'):
      with context('exposes an `on_failure` decorator which'):
          with before.each:
              integrations.integrations = {}
  
          with after.each:
              integrations.integrations = {}
  
          with it('returns the decorated function as is'):
              decorated_function = Spy().decorated_function
  
              expect(on_failure('some_integration_name')(decorated_function)).to(be(decorated_function))
  
          with it('doesn\'t call the decorated function'):
              decorated_function = Spy().decorated_function
  
              on_failure('some_integration_name')(decorated_function)
  
              expect(decorated_function).to_not(have_been_called)
  
subject: Add two basic tests for `on_failure`.