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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require 'stringio'
require_relative 'shared/getc'
# This method is added by io/console on require.
describe "StringIO#getch" do
require 'io/console'
it_behaves_like :stringio_getc, :getch
it "returns the character at the current position" do
io = StringIO.new("example")
io.getch.should == ?e
io.getch.should == ?x
io.getch.should == ?a
end
it "increments #pos by the byte size of the character in multibyte strings" do
io = StringIO.new("föóbar")
io.getch; io.pos.should == 1 # "f" has byte size 1
io.getch; io.pos.should == 3 # "ö" has byte size 2
io.getch; io.pos.should == 5 # "ó" has byte size 2
io.getch; io.pos.should == 6 # "b" has byte size 1
end
it "returns nil at the end of the string" do
# empty string case
io = StringIO.new("")
io.getch.should == nil
io.getch.should == nil
# non-empty string case
io = StringIO.new("a")
io.getch # skip one
io.getch.should == nil
end
describe "StringIO#getch when self is not readable" do
it_behaves_like :stringio_getc_not_readable, :getch
end
end
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