kensa test sso X fails if JSON is returned

[Genkilabs]

If you accidentally return json you will receive the error, even if the status is good/accepted

Check displays the heroku layout/Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/check.rb:457:in `block in call!': undefined method `search' for #<Mechanize::File:0x007fa208b999c8> (NoMethodError)
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/check.rb:28:in `check'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/check.rb:418:in `check'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/check.rb:456:in `call!'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/check.rb:45:in `call'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/client.rb:168:in `block in run_check'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/client.rb:165:in `each'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/client.rb:165:in `run_check'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/client.rb:64:in `test'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/lib/heroku/kensa/client.rb:21:in `run!'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/gems/kensa-1.4.1/bin/kensa:17:in `<top (required)>'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/bin/kensa:23:in `load'
    from /Users/Gingitsune/.rvm/gems/ruby-1.9.3-rc1/bin/kensa:23:in `<main>'

This can be reproduced like this:

  #GET /heroku/resources/:id
  #This is a Heroku SSO, check creds then redirect
  def sso_login
    pass, message, status = sso_auth? #check credentials and return: bool, string, [200,401]

    # render :text => message, :status => status, :layout => true
    render :json => message, :status => status #blows up `kensa test sso 1`
  end

[carlhoerberg]

you get this even if you're returning 303..