formatter_test.exs
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2022 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
	clear_config(Pleroma.Formatter)
	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 =
	~s(I love <a class="hashtag" data-tag="cofe" href="http://localhost:4001/tag/cofe" rel="tag ugc">#cofe</a> and <a class="hashtag" data-tag="2hu" href="http://localhost:4001/tag/2hu" rel="tag ugc">#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 =
	~s(<a class="hashtag" data-tag="fact_3" href="http://localhost:4001/tag/fact_3" rel="tag ugc">#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 =
	~S(Hey, check out <a href="https://www.youtube.com/watch?v=8Zg1-TufF%20zY?x=1&y=2#blabla" rel="ugc">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 =
	~S(<a href="https://mastodon.social/@lambadalambda" rel="ugc">https://mastodon.social/@lambadalambda</a>)

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

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

	expected =
	~S(<a href="https://mastodon.social:4000/@lambadalambda" rel="ugc">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 =
	~S(<a href="http://www.cs.vu.nl/~ast/intel/" rel="ugc">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\" rel=\"ugc\">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\" rel=\"ugc\">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\" rel=\"ugc\">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\" rel=\"ugc\">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\" rel=\"ugc\">https://pleroma.com</a> <a href=\"https://pleroma.com/sucks\" rel=\"ugc\">https://pleroma.com/sucks</a>"

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

	text = "xmpp:contact@hacktivis.me"

	expected = "<a href=\"xmpp:contact@hacktivis.me\" rel=\"ugc\">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}\" rel=\"ugc\">#{text}</a>"

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

	describe "Formatter.linkify" do
	test "correctly finds mentions that contain the domain name" do
	_user = insert(:user, %{nickname: "lain"})
	_remote_user = insert(:user, %{nickname: "lain@lain.com", local: false})

	text = "hey @lain@lain.com what's up"

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

	assert username == "@lain@lain.com"
	assert user.nickname == "lain@lain.com"
	end

	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_",
	uri: "https://archeme/@archa_eme_"
	)

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

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

	assert length(mentions) == 3

	expected_text =
	~s(<span class="h-card"><a class="u-url mention" data-user="#{gsimg.id}" href="#{gsimg.ap_id}" rel="ugc">@<span>gsimg</span></a></span> According to <span class="h-card"><a class="u-url mention" data-user="#{archaeme.id}" href="#{"https://archeme/@archa_eme_"}" rel="ugc">@<span>archa_eme_</span></a></span>, that is @daggsy. Also hello <span class="h-card"><a class="u-url mention" data-user="#{archaeme_remote.id}" href="#{archaeme_remote.ap_id}" rel="ugc">@<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 =
	~s(<span class="h-card"><a class="u-url mention" data-user="#{mike.id}" href="#{mike.ap_id}" rel="ugc">@<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 =
	~s(<span class="h-card"><a class="u-url mention" data-user="#{o.id}" href="#{o.ap_id}" rel="ugc">@<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 ==
	~s(<span class="h-card"><a class="u-url mention" data-user="#{user.id}" href="#{user.ap_id}" rel="ugc">@<span>#{user.nickname}</span></a></span> <span class="h-card"><a class="u-url mention" data-user="#{other_user.id}" href="#{other_user.ap_id}" rel="ugc">@<span>#{other_user.nickname}</span></a></span> hey dudes i hate <span class="h-card"><a class="u-url mention" data-user="#{third_user.id}" href="#{third_user.ap_id}" rel="ugc">@<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

	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},
	{"@o", o}
	]

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

	test "it parses URL containing local mention" do
	_user = insert(:user, %{nickname: "lain"})

	text = "https://example.com/@lain"

	expected = ~S(<a href="https://example.com/@lain" rel="ugc">https://example.com/@lain</a>)

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

	test "it correctly parses angry face D:< with mention" do
	lain =
	insert(:user, %{
	nickname: "lain@lain.com",
	ap_id: "https://lain.com/users/lain",
	id: "9qrWmR0cKniB0YU0TA"
	})

	text = "@lain@lain.com D:<"

	expected_text =
	~S(<span class="h-card"><a class="u-url mention" data-user="9qrWmR0cKniB0YU0TA" href="https://lain.com/users/lain" rel="ugc">@<span>lain</span></a></span> D:<)

	expected_mentions = [
	{"@lain@lain.com", lain}
	]

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

	test "correctly parses mentions in html" do
	text = "<p>@lain hello</p>"
	lain = insert(:user, %{nickname: "lain"})

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

	assert length(mentions) == 1

	expected_text =
	~s(<p><span class="h-card"><a class="u-url mention" data-user="#{lain.id}" href="#{lain.ap_id}" rel="ugc">@<span>lain</span></a></span> hello</p>)

	assert expected_text == text
	end

	test "correctly parses mentions on the last line of html" do
	text = "<p>Hello</p><p>@lain</p>"
	lain = insert(:user, %{nickname: "lain"})

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

	assert length(mentions) == 1

	expected_text =
	~s(<p>Hello</p><p><span class="h-card"><a class="u-url mention" data-user="#{lain.id}" href="#{lain.ap_id}" rel="ugc">@<span>lain</span></a></span></p>)

	assert expected_text == text
	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

	test "parses tags in html" do
	text = "<p>This is a #test</p>"

	expected_tags = [
	{"#test", "test"}
	]

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

	test "parses mulitple tags in html" do
	text = "<p>#tag1 #tag2 #tag3 #tag4</p>"

	expected_tags = [
	{"#tag1", "tag1"},
	{"#tag2", "tag2"},
	{"#tag3", "tag3"},
	{"#tag4", "tag4"}
	]

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

	test "parses tags on the last line of html" do
	text = "<p>This is a</p><p>#test</p>"

	expected_tags = [
	{"#test", "test"}
	]

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

	test "parses mulitple tags on mulitple lines in html" do
	text =
	"<p>testing...</p><p>#tag1 #tag2 #tag3 #tag4</p><p>paragraph</p><p>#tag5 #tag6 #tag7 #tag8</p>"

	expected_tags = [
	{"#tag1", "tag1"},
	{"#tag2", "tag2"},
	{"#tag3", "tag3"},
	{"#tag4", "tag4"},
	{"#tag5", "tag5"},
	{"#tag6", "tag6"},
	{"#tag7", "tag7"},
	{"#tag8", "tag8"}
	]

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