$:.unshift(File.dirname(__FILE__)+'/../lib/')
require 'statsample'
require 'test/unit'

class StatsampleStratifiedTestCase < Test::Unit::TestCase

	def initialize(*args)
		super
	end
	def test_mean
		a=[10,20,30,40,50]
		b=[110,120,130,140]
		pop=a+b
		av=a.to_vector(:scale)
		bv=b.to_vector(:scale)
		popv=pop.to_vector(:scale)
		assert_equal(popv.mean,Statsample::StratifiedSample.mean(av,bv))
	end
end