class Spec::Example::ExampleGroup

want to make a custom example group.
Base class for customized example groups. Use this if you

def initialize(defined_description, &implementation) 

def initialize(defined_description, &implementation)
  @_defined_description = defined_description
  @_implementation = implementation || pending_implementation
end

def pending_implementation 

def pending_implementation
  error = NotYetImplementedError.new(caller)
  lambda { raise(error) }
end