File: pretty_print_spec.rb

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require_relative '../../spec_helper'
require 'set'

ruby_version_is ""..."3.1" do
  describe "Set#pretty_print" do
    it "passes the 'pretty print' representation of self to the pretty print writer" do
      pp = mock("PrettyPrint")
      set = Set[1, 2, 3]

      pp.should_receive(:text).with("#<Set: {")
      pp.should_receive(:text).with("}>")

      pp.should_receive(:nest).with(1).and_yield
      pp.should_receive(:seplist).with(set)

      set.pretty_print(pp)
    end
  end
end