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require 'spec_helper'
require File.expand_path("#{File.dirname(__FILE__)}/binary_protocol_spec_shared")

describe 'BinaryProtocol' do

  it_should_behave_like 'a binary protocol'

  def protocol_class
    Thrift::BinaryProtocol
  end

  describe Thrift::BinaryProtocol do

    before(:each) do
      @trans = Thrift::MemoryBufferTransport.new
      @prot = protocol_class.new(@trans)
    end

    it "should read a message header" do
      @trans.write([protocol_class.const_get(:VERSION_1) | Thrift::MessageTypes::REPLY].pack('N'))
      @trans.write([42].pack('N'))
      @prot.should_receive(:read_string).and_return('testMessage')
      @prot.read_message_begin.should == ['testMessage', Thrift::MessageTypes::REPLY, 42]
    end

    it "should raise an exception if the message header has the wrong version" do
      @prot.should_receive(:read_i32).and_return(-1)
      lambda { @prot.read_message_begin }.should raise_error(Thrift::ProtocolException, 'Missing version identifier') do |e|
        e.type == Thrift::ProtocolException::BAD_VERSION
      end
    end

    it "should raise an exception if the message header does not exist and strict_read is enabled" do
      @prot.should_receive(:read_i32).and_return(42)
      @prot.should_receive(:strict_read).and_return(true)
      lambda { @prot.read_message_begin }.should raise_error(Thrift::ProtocolException, 'No version identifier, old protocol client?') do |e|
        e.type == Thrift::ProtocolException::BAD_VERSION
      end
    end
  end

  describe Thrift::BinaryProtocolFactory do
    it "should create a BinaryProtocol" do
      Thrift::BinaryProtocolFactory.new.get_protocol(mock("MockTransport")).should be_instance_of(Thrift::BinaryProtocol)
    end
  end
end