require 'test/unit'
 class ArrayTest < Test::Unit::TestCase
   def setup
     @empty_array = []
   end
 
   def test_empty?
     assert(@empty_array.empty?)
   end
 
   def test_size
     assert_equal(0, @empty_array.size)
   end
 
   def teardown
     @empty_array = nil
   end
 end