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require 'stringio'
require File.expand_path('../../../spec_helper', __FILE__)
describe "StringIO#external_encoding" do
it "gets the encoding of the underlying String" do
io = StringIO.new
io.set_encoding Encoding::EUC_JP
io.external_encoding.should == Encoding::EUC_JP
end
ruby_version_is "2.3" do
it "does not set the encoding of its buffer string if the string is frozen" do
str = "foo".freeze
enc = str.encoding
io = StringIO.new(str)
io.set_encoding Encoding::EUC_JP
io.external_encoding.should == Encoding::EUC_JP
str.encoding.should == enc
end
end
end
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