=begin
 Copyright (C) 2000, 2001, 2002, 2003 RiskMap srl

 This file is part of QuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://quantlib.org/

 QuantLib is free software: you can redistribute it and/or modify it
 under the terms of the QuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 <quantlib-dev@lists.sf.net>. The license is also available online at
 <http://quantlib.org/license.shtml>.

 This program is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE.  See the license for more details.
=end

require 'QuantLib'
require 'test/unit/testcase'
require 'test/unit/ui/console/testrunner'

class InstrumentTest < Test::Unit::TestCase
  def name
    "Testing observability of stocks"
  end
  def testStock
    flag = false
    me1 = QuantLib::SimpleQuote.new(0.0)
    h = QuantLib::RelinkableQuoteHandle.new(me1)
    s = QuantLib::Stock.new(h)
    s.NPV

    obs = QuantLib::Observer.new { flag = true }
    obs.registerWith(s)

    me1.value = 3.14
    unless flag
        flunk("Observer was not notified of instrument change")
    end

    s.NPV
    flag = false
    me2 = QuantLib::SimpleQuote.new(0.0)
    h.linkTo!(me2)
    unless flag
        flunk("Observer was not notified of instrument change")
    end

    s.NPV
    flag = false
    s.freeze!
    me2.value = 2.71
    if flag
        flunk("Observer was notified of frozen instrument change")
    end
    s.unfreeze!
    unless flag
        flunk("Observer was not notified of instrument change")
    end
  end
end


if $0 == __FILE__
  Test::Unit::UI::Console::TestRunner.run(InstrumentTest)
end