Ruby Koans #75 test_constants_become_symbols，正确答案？

Question

我的问题基于这个问题:Ruby Koan: Constants become symbols .我有以下代码:

in_ruby_version("mri") do
  RubyConstant = "What is the sound of one hand clapping?"
  def test_constants_become_symbols
    all_symbols = Symbol.all_symbols

    assert_equal __, all_symbols.include?(__)
  end
end

正确答案应该是下面的吗？

    assert_equal true, all_symbols.include?("RubyConstant".to_sym)

我知道我不应该这样做:

    assert_equal true, all_symbols.include?(:RubyConstant)

因为那时我可以把任何东西放在那里，它仍然是真的

    assert_equal true, all_symbols.include?(:DoesNotMatter)

提前为问一个简单的“是或否”问题而道歉。我很想知道“正确”的答案是什么。我更愿意在我上面提到的上一篇文章的评论中问这个问题，但我不能不单独发表一篇文章。

Answer 1

这是我得到的:

in_ruby_version("mri") do
  RubyConstant = "What is the sound of one hand clapping?"
  def test_constants_become_symbols
    all_symbols_as_strings = Symbol.all_symbols.map { |x| x.to_s }

    assert_equal true, all_symbols_as_strings.include?("RubyConstant")
  end
end