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

class StatsampleSrsTestCase < Test::Unit::TestCase
    def test_std_error
	if HAS_GSL
        assert_equal(384,Statsample::SRS.estimation_n0(0.05,0.5,0.95).to_i)
        assert_equal(108,Statsample::SRS.estimation_n(0.05,0.5,150,0.95).to_i)
	else
		puts "Statsample::SRS.estimation_n0 not tested (needs ruby-gsl)"
	end
        assert_in_delta(0.0289,Statsample::SRS.proportion_sd_kp_wor(0.5,100,150),0.001)
    end
end