File: test_integer_1_9.rb

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require 'test/unit'

class TestInteger19 < Test::Unit::TestCase
  def test_even?
    assert 1000000000000000000000000000000.even?
  end
  
  def test_odd?
    1000000000000000000000000000001.odd?
  end
  
  def test_pred
    assert_equal 10000000000000000000000000000001, 10000000000000000000000000000002.pred
    assert_equal 10000000000000000000000000000000, 10000000000000000000000000000001.pred
    assert_equal  9999999999999999999999999999999, 10000000000000000000000000000000.pred
  end
end