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require 'stringio'
require_relative '../../spec_helper'
describe "StringIO#set_encoding" do
it "sets the encoding of the underlying String if the String is not frozen" do
str = "".encode(Encoding::US_ASCII)
io = StringIO.new(str)
io.set_encoding Encoding::UTF_8
io.string.encoding.should == Encoding::UTF_8
end
it "does not set the encoding of the underlying String if the String is frozen" do
str = "".encode(Encoding::US_ASCII).freeze
io = StringIO.new(str)
io.set_encoding Encoding::UTF_8
io.string.encoding.should == Encoding::US_ASCII
end
it "accepts a String" do
str = "".encode(Encoding::US_ASCII)
io = StringIO.new(str)
io.set_encoding("ASCII-8BIT")
io.external_encoding.should == Encoding::BINARY
str.encoding.should == Encoding::BINARY
end
end
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