require 'spec_helper'

describe Immutable::Vector do
  describe '#marshal_dump/#marshal_load' do
    let(:ruby) do
      File.join(RbConfig::CONFIG['bindir'], RbConfig::CONFIG['ruby_install_name'])
    end
    let(:child_cmd) do
      %Q|#{ruby} -I lib -r immutable -e 'vector = Immutable::Vector[5, 10, 15]; $stdout.write(Marshal.dump(vector))'|
    end

    let(:reloaded_vector) do
      IO.popen(child_cmd, 'r+') do |child|
        reloaded_vector = Marshal.load(child)
        child.close
        reloaded_vector
      end
    end

    it 'can survive dumping and loading into a new process' do
      expect(reloaded_vector).to eql(V[5, 10, 15])
    end

    it 'is still possible to find items by index after loading' do
      expect(reloaded_vector[0]).to eq(5)
      expect(reloaded_vector[1]).to eq(10)
      expect(reloaded_vector[2]).to eq(15)
      expect(reloaded_vector.size).to eq(3)
    end
  end
end
