require 'facets/numeric/approx'
require 'test/unit'

class TestRound < Test::Unit::TestCase

  def test_approx?
    f = 10.006
    assert( f.approx?(10.01) )
    assert( f.approx?(10, 0.1) )
    assert( 100.4.approx?(100.6, 1) )
  end

end