gistfile1.rb

class HashExtTest < Test::Unit::TestCase
  def setup
    @strings = { 'a' => 1, 'b' => 2 }
    @symbols = { :a  => 1, :b  => 2 }
    @mixed   = { :a  => 1, 'b' => 2 }
    @fixnums = {  0  => 1,  1  => 2 }
    if RUBY_VERSION < '1.9.0'
      @illegal_symbols = { "\0" => 1, "" => 2, [] => 3 }
    else
      @illegal_symbols = { [] => 3 }
    end
  end

  def test_symbolize_keys_preserves_keys_that_cant_be_symbolized
    assert_equal @illegal_symbols, @illegal_symbols.symbolize_keys
    assert_equal @illegal_symbols, @illegal_symbols.dup.symbolize_keys!
  end
end