require 'spec_helper'

describe Immutable::Hash 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 'dict = Immutable::Hash[existing_key: 42, other_thing: "data"]; $stdout.write(Marshal.dump(dict))'|
    end

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

    it 'can survive dumping and loading into a new process' do
      expect(reloaded_hash).to eql(H[existing_key: 42, other_thing: 'data'])
    end

    it 'is still possible to find items by key after loading' do
      expect(reloaded_hash[:existing_key]).to eq(42)
    end
  end
end