ruby--ruby/spec/ruby/library/set/pretty_print_cycle_spec.rb

require File.expand_path('../../../spec_helper', __FILE__)
require 'set'

describe "Set#pretty_print_cycle" do
  it "passes the 'pretty print' representation of a self-referencing Set to the pretty print writer" do
    pp = mock("PrettyPrint")
    pp.should_receive(:text).with("#<Set: {...}>")
    Set[1, 2, 3].pretty_print_cycle(pp)
  end
end