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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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