class Rspec::Core::Example

def run(behaviour_instance)
  @behaviour_instance = behaviour_instance
  @behaviour_instance.running_example = self
  run_started
  all_systems_nominal = true
  exception_encountered = nil
  begin
    run_before_each
    @behaviour_instance.instance_eval(&example_block) if example_block
  rescue Exception => e
    exception_encountered = e
    all_systems_nominal = false
  end
  begin
    run_after_each
  rescue Exception => e
    exception_encountered ||= e
    all_systems_nominal = false
  ensure
    @behaviour_instance.running_example = nil
  end
  if exception_encountered
    run_failed(exception_encountered) 
  else
    example_block ? run_passed : run_pending
  end
  all_systems_nominal
end