# coding: utf-8

module Kernel
  def ∞
    Float::INFINITY
  end
end

if __FILE__ == $0
  require 'test/unit'
  class InfinityAliasTest < Test::Unit::TestCase
    def judge(n)
      case n
      when  1..10; 1
      when 11..∞; 2
      else       ; 3
      end
    end

    def test_judge_infinity
      assert_equal judge(1), 1
      assert_equal judge(10), 1
      assert_equal judge(11), 2
      assert_equal judge(100), 2
      assert_equal judge(9999999999999999), 2
    end
  end
end