gistfile1.builder

# Here's the current version, taken from core/encoding/converter/convpath_spec.rb
    it "returns multiple encoding pairs when direct conversion is impossible" do
      ec = Encoding::Converter.new('ascii','Big5')
      ec.convpath.size.should == 2
      ec.convpath.first.should == [Encoding::US_ASCII, Encoding::UTF_8]
      ec.convpath.last.should == [Encoding::UTF_8, Encoding::Big5]
    end

# That spec seems to imply that the internal encoding for Strings is UTF-8, 
# which is the case on MRI but not on other implementations. 
# This is a version without that assumption:

    it "returns multiple encoding pairs when direct conversion is impossible" do
      ec = Encoding::Converter.new('ascii','Big5')
      ec.convpath.size.should == 2
      ec.convpath.first.first.should == Encoding::US_ASCII
      ec.convpath.first.last.should == ec.convpath.last.first
      ec.convpath.last.last.should == Encoding::Big5
    end