castanet-issue-2-demo.diff

diff --git a/spec/castanet/responses/ticket_validate_spec.rb b/spec/castanet/responses/ticket_validate_spec.rb
index a75758c..8dad95d 100644
--- a/spec/castanet/responses/ticket_validate_spec.rb
+++ b/spec/castanet/responses/ticket_validate_spec.rb
@@ -1,17 +1,37 @@
 require File.expand_path('../../../spec_helper', __FILE__)
 
+require 'tempfile'
+
 module Castanet::Responses
   describe TicketValidate do
     describe '.from_cas' do
       describe 'on success' do
-        let(:response) do
-          TicketValidate.from_cas(%Q{
-            <cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'>
+        let(:response_text) do
+          %Q{<cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'>
                 <cas:authenticationSuccess>
                     <cas:user>username</cas:user>
                 </cas:authenticationSuccess>
-            </cas:serviceResponse>
-          })
+            </cas:serviceResponse>}
+        end
+
+        let(:response) do
+          TicketValidate.from_cas(response_text)
+        end
+
+        describe 'given UTF-16' do
+          it 'returns authentication success' do
+            resp = nil
+
+            Tempfile.open('test') do |f|
+              f.write(response_text)
+              f.flush
+
+              new_text = `iconv -f UTF-8 -t UTF-16 #{f.path}`
+              resp = TicketValidate.from_cas(new_text)
+            end
+
+            resp.should be_ok
+          end
         end

run

$ bundle exec ruby spec/castanet/responses/ticket_validate_spec.rb 
...F.....

Failures:

  1) Castanet::Responses::TicketValidate.from_cas on success given UTF-16 returns authentication success
     Failure/Error: resp = TicketValidate.from_cas(new_text)
     ArgumentError:
       invalid byte sequence in UTF-8
     # ./lib/castanet/responses/ticket_validate.rb:92:in `strip'
     # ./lib/castanet/responses/ticket_validate.rb:92:in `from_cas'
     # spec/castanet/responses/ticket_validate_spec.rb:30:in `block (6 levels) in <module:Responses>'
     # spec/castanet/responses/ticket_validate_spec.rb:25:in `block (5 levels) in <module:Responses>'

One thing I didn't check, and just checked now: the returned string from the iconv invocation is actually tagged as being in UTF-8, not UTF-16. Unfortunately, I'm not having any luck getting Ruby 1.9.2-p136 to either do the UTF-8 -> UTF-16 transcode itself, or force UTF-16 encoding in the result: in both cases I'm met with unknown encoding name - UTF-16. Specifying UTF16 as the encoding name also doesn't work, nor does the more explicit UTF16_LE. Didn't try big-endian UTF-16.