# frozen_string_literal: true
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require 'spec_helper'

describe 'Serializer' do
  describe Thrift::Serializer do
    it "should serialize structs to binary by default" do
      serializer = Thrift::Serializer.new(Thrift::BinaryProtocolAcceleratedFactory.new)
      data = serializer.serialize(SpecNamespace::Hello.new(:greeting => "'Ello guv'nor!"))
      expect(data).to eq("\x0B\x00\x01\x00\x00\x00\x0E'Ello guv'nor!\x00")
    end

    it "should serialize structs to the given protocol" do
      protocol = Thrift::BaseProtocol.new(double("transport"))
      expect(protocol).to receive(:write_struct_begin).with("SpecNamespace::Hello")
      expect(protocol).to receive(:write_field_begin).with("greeting", Thrift::Types::STRING, 1)
      expect(protocol).to receive(:write_string).with("Good day")
      expect(protocol).to receive(:write_field_end)
      expect(protocol).to receive(:write_field_stop)
      expect(protocol).to receive(:write_struct_end)
      protocol_factory = double("ProtocolFactory")
      allow(protocol_factory).to receive(:get_protocol).and_return(protocol)
      serializer = Thrift::Serializer.new(protocol_factory)
      serializer.serialize(SpecNamespace::Hello.new(:greeting => "Good day"))
    end
  end

  describe Thrift::Deserializer do
    it "should deserialize structs from binary by default" do
      deserializer = Thrift::Deserializer.new
      data = "\x0B\x00\x01\x00\x00\x00\x0E'Ello guv'nor!\x00"
      expect(deserializer.deserialize(SpecNamespace::Hello.new, data)).to eq(SpecNamespace::Hello.new(:greeting => "'Ello guv'nor!"))
    end

    it "should deserialize structs from the given protocol" do
      protocol = Thrift::BaseProtocol.new(double("transport"))
      expect(protocol).to receive(:read_struct_begin).and_return("SpecNamespace::Hello")
      expect(protocol).to receive(:read_field_begin).and_return(["greeting", Thrift::Types::STRING, 1],
                                                            [nil, Thrift::Types::STOP, 0])
      expect(protocol).to receive(:read_string).and_return("Good day")
      expect(protocol).to receive(:read_field_end)
      expect(protocol).to receive(:read_struct_end)
      protocol_factory = double("ProtocolFactory")
      allow(protocol_factory).to receive(:get_protocol).and_return(protocol)
      deserializer = Thrift::Deserializer.new(protocol_factory)
      expect(deserializer.deserialize(SpecNamespace::Hello.new, "")).to eq(SpecNamespace::Hello.new(:greeting => "Good day"))
    end
  end
end
