test_io_inheritance.cr

require "http"
module Thing
  class MyClass < IO
       
    def seek(offset)
      ret = nil
      ret + 1
    end
 
    def rewind
      seek(0)
    end
 
    def read(slice : Slice(UInt8))
      1
    end
 
    def write(slice : Slice(UInt8))
      1
    end
  end
end

response = HTTP::Client.head "http://google.com"