# encoding=utf-8

require "spec_helper"

describe Faye::WebSocket::Draft75Parser do
  include EncodingHelper
  
  before do
    @web_socket = mock Faye::WebSocket
    @parser = Faye::WebSocket::Draft75Parser.new(@web_socket)
  end
  
  describe :parse do
    shared_examples_for "draft-75 parser" do
      it "parses text frames" do
        @web_socket.should_receive(:receive).with("Hello")
        parse [0x00, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0xff]
      end
      
      it "parses multiple frames from the same packet" do
        @web_socket.should_receive(:receive).with("Hello").exactly(2)
        parse [0x00, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0xff, 0x00, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0xff]
      end
      
      it "parses text frames beginning 0x00-0x7F" do
        @web_socket.should_receive(:receive).with("Hello")
        parse [0x66, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0xff]
      end
      
      it "ignores frames with a length header" do
        @web_socket.should_not_receive(:receive)
        parse [0x80, 0x05, 0x48, 0x65, 0x6c, 0x6c, 0x6f]
      end
      
      it "parses text following an ignored block" do
        @web_socket.should_receive(:receive).with("Hello")
        parse [0x80, 0x02, 0x48, 0x65, 0x00, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0xff]
      end
      
      it "parses multibyte text frames" do
        @web_socket.should_receive(:receive).with(encode "Apple = ")
        parse [0x00, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x20, 0x3d, 0x20, 0xef, 0xa3, 0xbf, 0xff]
      end
      
      it "parses frames received in several packets" do
        @web_socket.should_receive(:receive).with(encode "Apple = ")
        parse [0x00, 0x41, 0x70, 0x70, 0x6c, 0x65]
        parse [0x20, 0x3d, 0x20, 0xef, 0xa3, 0xbf, 0xff]
      end
      
      it "parses fragmented frames" do
        @web_socket.should_receive(:receive).with("Hello")
        parse [0x00, 0x48, 0x65, 0x6c]
        parse [0x6c, 0x6f, 0xff]
      end
    end
    
    it_should_behave_like "draft-75 parser"
  end
  
  describe :frame do
    it "returns the given string formatted as a WebSocket frame" do
      bytes(@parser.frame "Hello").should == [0x00, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0xff]
    end
    
    it "encodes multibyte characters correctly" do
      message = encode "Apple = "
      bytes(@parser.frame message).should == [0x00, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x20, 0x3d, 0x20, 0xef, 0xa3, 0xbf, 0xff]
    end
  end
end