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✏️ Editing: mock_gem_ui.rb

require 'stringio'
require 'rubygems/user_interaction'

##
# This Gem::StreamUI subclass records input and output to StringIO for
# retrieval during tests.

class Gem::MockGemUi < Gem::StreamUI
  ##
  # Raised when you haven't provided enough input to your MockGemUi

class InputEOFError < RuntimeError

def initialize question
      super "Out of input for MockGemUi on #{question.inspect}"
    end

end

class TermError < RuntimeError
    attr_reader :exit_code

def initialize exit_code
      super
      @exit_code = exit_code
    end
  end
  class SystemExitException < RuntimeError; end

module TTY

attr_accessor :tty

def tty?()
      @tty = true unless defined?(@tty)
      @tty
    end

def noecho
      yield self
    end
  end

def initialize(input = "")
    ins = StringIO.new input
    outs = StringIO.new
    errs = StringIO.new

ins.extend TTY
    outs.extend TTY
    errs.extend TTY

super ins, outs, errs, true

@terminated = false
  end

def ask question
    raise InputEOFError, question if @ins.eof?

super
  end

def input
    @ins.string
  end

def output
    @outs.string
  end

def error
    @errs.string
  end

def terminated?
    @terminated
  end

def terminate_interaction(status=0)
    @terminated = true

raise TermError, status if status != 0
    raise SystemExitException
  end

end

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