text: # coding: utf-8
  ##
  # Symbol(Ext) Test
  
  if Symbol.respond_to?(:all_symbols)
    assert('Symbol.all_symbols') do
      foo = [:__symbol_test_1, :__symbol_test_2, :__symbol_test_3].sort
      symbols = Symbol.all_symbols.select{|sym|sym.to_s.include? '__symbol_test'}.sort
      assert_equal foo, symbols
    end
  end
  
  %w[size length].each do |n|
    assert("Symbol##{n}") do
      assert_equal 5, :hello.__send__(n)
      assert_equal 4, :"aA\0b".__send__(n)
      if __ENCODING__ == "UTF-8"
        assert_equal 8, :"こんにちは世界!".__send__(n)
        assert_equal 4, :"aあ\0b".__send__(n)
      else
        assert_equal 22, :"こんにちは世界!".__send__(n)
        assert_equal 6, :"aあ\0b".__send__(n)
      end
    end
  end
  
  assert("Symbol#capitalize") do
    assert_equal :Hello, :hello.capitalize
    assert_equal :Hello, :HELLO.capitalize
    assert_equal :Hello, :Hello.capitalize
  end
  
  assert("Symbol#downcase") do
    assert_equal :hello, :hEllO.downcase
    assert_equal :hello, :hello.downcase
  end
  
  assert("Symbol#upcase") do
    assert_equal :HELLO, :hEllO.upcase
    assert_equal :HELLO, :HELLO.upcase
  end
  
  assert("Symbol#casecmp") do
    assert_equal 0, :HELLO.casecmp(:hEllO)
    assert_equal 1, :HELLO.casecmp(:hEllN)
    assert_equal(-1, :HELLO.casecmp(:hEllP))
    assert_nil :HELLO.casecmp("hEllO")
  end
  
  assert("Symbol#empty?") do
    assert_true :''.empty?
  end
  
  assert('Symbol#intern') do
    assert_equal :test, :test.intern
  end
  