# frozen_string_literal: true

require_relative "common"

describe "Sanitize::Transformers::CleanComment" do
  make_my_diffs_pretty!
  parallelize_me!

  describe "when :allow_comments is false" do
    before do
      @s = Sanitize.new(allow_comments: false, elements: ["div"])
    end

    it "should remove comments" do
      _(@s.fragment("foo <!-- comment --> bar")).must_equal "foo  bar"
      _(@s.fragment("foo <!-- ")).must_equal "foo "
      _(@s.fragment("foo <!-- - -> bar")).must_equal "foo "
      _(@s.fragment("foo <!--\n\n\n\n-->bar")).must_equal "foo bar"
      _(@s.fragment("foo <!-- <!-- <!-- --> --> -->bar")).must_equal "foo  --&gt; --&gt;bar"
      _(@s.fragment("foo <div <!-- comment -->>bar</div>")).must_equal "foo <div>&gt;bar</div>"

      # Special case: the comment markup is inside a <script>, which makes it
      # text content and not an actual HTML comment.
      _(@s.fragment("<script><!-- comment --></script>")).must_equal ""

      _(Sanitize.fragment("<script><!-- comment --></script>", allow_comments: false, elements: ["script"]))
        .must_equal "<script><!-- comment --></script>"
    end
  end

  describe "when :allow_comments is true" do
    before do
      @s = Sanitize.new(allow_comments: true, elements: ["div"])
    end

    it "should allow comments" do
      _(@s.fragment("foo <!-- comment --> bar")).must_equal "foo <!-- comment --> bar"
      _(@s.fragment("foo <!-- ")).must_equal "foo <!-- -->"
      _(@s.fragment("foo <!-- - -> bar")).must_equal "foo <!-- - -> bar-->"
      _(@s.fragment("foo <!--\n\n\n\n-->bar")).must_equal "foo <!--\n\n\n\n-->bar"
      _(@s.fragment("foo <!-- <!-- <!-- --> --> -->bar")).must_equal "foo <!-- <!-- <!-- --> --&gt; --&gt;bar"
      _(@s.fragment("foo <div <!-- comment -->>bar</div>")).must_equal "foo <div>&gt;bar</div>"

      _(Sanitize.fragment("<script><!-- comment --></script>", allow_comments: true, elements: ["script"]))
        .must_equal "<script><!-- comment --></script>"
    end
  end
end
