if defined?(JRUBY_VERSION) && ENV['TEST_NO_UNSAFE']
  # to be used like this: rake test TEST_NO_UNSAFE=true
  load 'test/package.jar'
  java_import 'thread_safe.SecurityManager'
  manager = SecurityManager.new

  # Prevent accessing internal classes
  manager.deny(java.lang.RuntimePermission.new('accessClassInPackage.sun.misc'))
  java.lang.System.setSecurityManager(manager)

  module Concurrent
    describe 'no_unsafe' do
      it 'security_manager_is_used' do
        begin
          java_import 'sun.misc.Unsafe'
          fail
        rescue SecurityError
        end
      end

      it 'no_unsafe_version_of_chmv8_is_used' do
        require 'concurrent/thread_safe/jruby_cache_backend' # make sure the jar has been loaded
        expect(!Java::OrgJrubyExtThread_safe::JRubyMapBackendLibrary::JRubyMapBackend::CAN_USE_UNSAFE_CHM).to be_truthy
      end
    end
  end
end