emoji_policy_test.exs
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emoji_policy_test.exs
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.ActivityPub.MRF.EmojiPolicyTest do
	use Pleroma.DataCase

	require Pleroma.Constants

	alias Pleroma.Web.ActivityPub.MRF
	alias Pleroma.Web.ActivityPub.MRF.EmojiPolicy

	setup do: clear_config(:mrf_emoji)

	setup do
	clear_config([:mrf_emoji], %{
	remove_url: [],
	remove_shortcode: [],
	federated_timeline_removal_url: [],
	federated_timeline_removal_shortcode: []
	})
	end

	@emoji_tags [
	%{
	"icon" => %{
	"type" => "Image",
	"url" => "https://example.org/emoji/biribiri/mikoto_smile2.png"
	},
	"id" => "https://example.org/emoji/biribiri/mikoto_smile2.png",
	"name" => ":mikoto_smile2:",
	"type" => "Emoji",
	"updated" => "1970-01-01T00:00:00Z"
	},
	%{
	"icon" => %{
	"type" => "Image",
	"url" => "https://example.org/emoji/biribiri/mikoto_smile3.png"
	},
	"id" => "https://example.org/emoji/biribiri/mikoto_smile3.png",
	"name" => ":mikoto_smile3:",
	"type" => "Emoji",
	"updated" => "1970-01-01T00:00:00Z"
	},
	%{
	"icon" => %{
	"type" => "Image",
	"url" => "https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
	},
	"id" => "https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png",
	"name" => ":nekomimi_girl_emoji_007:",
	"type" => "Emoji",
	"updated" => "1970-01-01T00:00:00Z"
	},
	%{
	"icon" => %{
	"type" => "Image",
	"url" => "https://example.org/test.png"
	},
	"id" => "https://example.org/test.png",
	"name" => ":test:",
	"type" => "Emoji",
	"updated" => "1970-01-01T00:00:00Z"
	}
	]

	@misc_tags [%{"type" => "Placeholder"}]

	@user_data %{
	"type" => "Person",
	"id" => "https://example.org/placeholder",
	"name" => "lol",
	"tag" => @emoji_tags ++ @misc_tags
	}

	@status_data %{
	"type" => "Create",
	"object" => %{
	"type" => "Note",
	"id" => "https://example.org/placeholder",
	"content" => "lol",
	"tag" => @emoji_tags ++ @misc_tags,
	"emoji" => %{
	"mikoto_smile2" => "https://example.org/emoji/biribiri/mikoto_smile2.png",
	"mikoto_smile3" => "https://example.org/emoji/biribiri/mikoto_smile3.png",
	"nekomimi_girl_emoji_007" =>
	"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png",
	"test" => "https://example.org/test.png"
	},
	"to" => ["https://example.org/self", Pleroma.Constants.as_public()],
	"cc" => ["https://example.org/someone"]
	},
	"to" => ["https://example.org/self", Pleroma.Constants.as_public()],
	"cc" => ["https://example.org/someone"]
	}

	@status_data_with_history %{
	"type" => "Create",
	"object" =>
	@status_data["object"]
	\|> Map.merge(%{
	"formerRepresentations" => %{
	"type" => "OrderedCollection",
	"orderedItems" => [@status_data["object"] \|> Map.put("content", "older")],
	"totalItems" => 1
	}
	}),
	"to" => ["https://example.org/self", Pleroma.Constants.as_public()],
	"cc" => ["https://example.org/someone"]
	}

	@emoji_react_data %{
	"type" => "EmojiReact",
	"tag" => [@emoji_tags \|> Enum.at(3)],
	"object" => "https://example.org/someobject",
	"to" => ["https://example.org/self"],
	"cc" => ["https://example.org/someone"]
	}

	@emoji_react_data_matching_regex %{
	"type" => "EmojiReact",
	"tag" => [@emoji_tags \|> Enum.at(1)],
	"object" => "https://example.org/someobject",
	"to" => ["https://example.org/self"],
	"cc" => ["https://example.org/someone"]
	}

	@emoji_react_data_matching_nothing %{
	"type" => "EmojiReact",
	"tag" => [@emoji_tags \|> Enum.at(2)],
	"object" => "https://example.org/someobject",
	"to" => ["https://example.org/self"],
	"cc" => ["https://example.org/someone"]
	}

	@emoji_react_data_unicode %{
	"type" => "EmojiReact",
	"content" => "😍",
	"object" => "https://example.org/someobject",
	"to" => ["https://example.org/self"],
	"cc" => ["https://example.org/someone"]
	}

	describe "remove_url" do
	setup do
	clear_config([:mrf_emoji, :remove_url], [
	"https://example.org/test.png",
	~r{/biribiri/mikoto_smile[23]\.png},
	"nekomimi_girl_emoji"
	])

	:ok
	end

	test "processes user" do
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, @user_data)

	expected_tags = [@emoji_tags \|> Enum.at(2)] ++ @misc_tags

	assert %{"tag" => ^expected_tags} = filtered
	end

	test "processes status" do
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data)

	expected_tags = [@emoji_tags \|> Enum.at(2)] ++ @misc_tags

	expected_emoji = %{
	"nekomimi_girl_emoji_007" =>
	"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
	}

	assert %{"object" => %{"tag" => ^expected_tags, "emoji" => ^expected_emoji}} = filtered
	end

	test "processes status with history" do
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data_with_history)

	expected_tags = [@emoji_tags \|> Enum.at(2)] ++ @misc_tags

	expected_emoji = %{
	"nekomimi_girl_emoji_007" =>
	"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
	}

	assert %{
	"object" => %{
	"tag" => ^expected_tags,
	"emoji" => ^expected_emoji,
	"formerRepresentations" => %{"orderedItems" => [item]}
	}
	} = filtered

	assert %{"tag" => ^expected_tags, "emoji" => ^expected_emoji} = item
	end

	test "processes updates" do
	{:ok, filtered} =
	MRF.filter_one(EmojiPolicy, @status_data_with_history \|> Map.put("type", "Update"))

	expected_tags = [@emoji_tags \|> Enum.at(2)] ++ @misc_tags

	expected_emoji = %{
	"nekomimi_girl_emoji_007" =>
	"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
	}

	assert %{
	"object" => %{
	"tag" => ^expected_tags,
	"emoji" => ^expected_emoji,
	"formerRepresentations" => %{"orderedItems" => [item]}
	}
	} = filtered

	assert %{"tag" => ^expected_tags, "emoji" => ^expected_emoji} = item
	end

	test "processes EmojiReact" do
	assert {:reject, "[EmojiPolicy] Rejected for having disallowed emoji"} ==
	MRF.filter_one(EmojiPolicy, @emoji_react_data)

	assert {:reject, "[EmojiPolicy] Rejected for having disallowed emoji"} ==
	MRF.filter_one(EmojiPolicy, @emoji_react_data_matching_regex)

	assert {:ok, @emoji_react_data_matching_nothing} ==
	MRF.filter_one(EmojiPolicy, @emoji_react_data_matching_nothing)

	assert {:ok, @emoji_react_data_unicode} ==
	MRF.filter_one(EmojiPolicy, @emoji_react_data_unicode)
	end
	end

	describe "remove_shortcode" do
	setup do
	clear_config([:mrf_emoji, :remove_shortcode], [
	"test",
	~r{mikoto_s},
	"nekomimi_girl_emoji"
	])

	:ok
	end

	test "processes user" do
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, @user_data)

	expected_tags = [@emoji_tags \|> Enum.at(2)] ++ @misc_tags

	assert %{"tag" => ^expected_tags} = filtered
	end

	test "processes status" do
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data)

	expected_tags = [@emoji_tags \|> Enum.at(2)] ++ @misc_tags

	expected_emoji = %{
	"nekomimi_girl_emoji_007" =>
	"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
	}

	assert %{"object" => %{"tag" => ^expected_tags, "emoji" => ^expected_emoji}} = filtered
	end

	test "processes status with history" do
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data_with_history)

	expected_tags = [@emoji_tags \|> Enum.at(2)] ++ @misc_tags

	expected_emoji = %{
	"nekomimi_girl_emoji_007" =>
	"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
	}

	assert %{
	"object" => %{
	"tag" => ^expected_tags,
	"emoji" => ^expected_emoji,
	"formerRepresentations" => %{"orderedItems" => [item]}
	}
	} = filtered

	assert %{"tag" => ^expected_tags, "emoji" => ^expected_emoji} = item
	end

	test "processes updates" do
	{:ok, filtered} =
	MRF.filter_one(EmojiPolicy, @status_data_with_history \|> Map.put("type", "Update"))

	expected_tags = [@emoji_tags \|> Enum.at(2)] ++ @misc_tags

	expected_emoji = %{
	"nekomimi_girl_emoji_007" =>
	"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
	}

	assert %{
	"object" => %{
	"tag" => ^expected_tags,
	"emoji" => ^expected_emoji,
	"formerRepresentations" => %{"orderedItems" => [item]}
	}
	} = filtered

	assert %{"tag" => ^expected_tags, "emoji" => ^expected_emoji} = item
	end

	test "processes EmojiReact" do
	assert {:reject, "[EmojiPolicy] Rejected for having disallowed emoji"} ==
	MRF.filter_one(EmojiPolicy, @emoji_react_data)

	assert {:reject, "[EmojiPolicy] Rejected for having disallowed emoji"} ==
	MRF.filter_one(EmojiPolicy, @emoji_react_data_matching_regex)

	assert {:ok, @emoji_react_data_matching_nothing} ==
	MRF.filter_one(EmojiPolicy, @emoji_react_data_matching_nothing)

	assert {:ok, @emoji_react_data_unicode} ==
	MRF.filter_one(EmojiPolicy, @emoji_react_data_unicode)
	end
	end

	describe "federated_timeline_removal_url" do
	setup do
	clear_config([:mrf_emoji, :federated_timeline_removal_url], [
	"https://example.org/test.png",
	~r{/biribiri/mikoto_smile[23]\.png},
	"nekomimi_girl_emoji"
	])

	:ok
	end

	test "processes status" do
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data)

	expected_tags = @status_data["object"]["tag"]
	expected_emoji = @status_data["object"]["emoji"]

	expected_to = ["https://example.org/self"]
	expected_cc = [Pleroma.Constants.as_public(), "https://example.org/someone"]

	assert %{
	"to" => ^expected_to,
	"cc" => ^expected_cc,
	"object" => %{"tag" => ^expected_tags, "emoji" => ^expected_emoji}
	} = filtered
	end

	test "ignore updates" do
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data \|> Map.put("type", "Update"))

	expected_tags = @status_data["object"]["tag"]
	expected_emoji = @status_data["object"]["emoji"]

	expected_to = ["https://example.org/self", Pleroma.Constants.as_public()]
	expected_cc = ["https://example.org/someone"]

	assert %{
	"to" => ^expected_to,
	"cc" => ^expected_cc,
	"object" => %{"tag" => ^expected_tags, "emoji" => ^expected_emoji}
	} = filtered
	end

	test "processes status with history" do
	status =
	@status_data_with_history
	\|> put_in(["object", "tag"], @misc_tags)
	\|> put_in(["object", "emoji"], %{})

	{:ok, filtered} = MRF.filter_one(EmojiPolicy, status)

	expected_tags = @status_data["object"]["tag"]
	expected_emoji = @status_data["object"]["emoji"]

	expected_to = ["https://example.org/self"]
	expected_cc = [Pleroma.Constants.as_public(), "https://example.org/someone"]

	assert %{
	"to" => ^expected_to,
	"cc" => ^expected_cc,
	"object" => %{
	"formerRepresentations" => %{
	"orderedItems" => [%{"tag" => ^expected_tags, "emoji" => ^expected_emoji}]
	}
	}
	} = filtered
	end
	end

	describe "edge cases" do
	setup do
	clear_config([:mrf_emoji, :remove_url], [
	"https://example.org/test.png",
	~r{/biribiri/mikoto_smile[23]\.png},
	"nekomimi_girl_emoji"
	])

	:ok
	end

	test "non-statuses" do
	answer = @status_data \|> put_in(["object", "type"], "Answer")
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, answer)

	assert filtered == answer
	end

	test "without tag" do
	status = @status_data \|> Map.put("object", Map.drop(@status_data["object"], ["tag"]))
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, status)

	refute Map.has_key?(filtered["object"], "tag")
	end

	test "without emoji" do
	status = @status_data \|> Map.put("object", Map.drop(@status_data["object"], ["emoji"]))
	{:ok, filtered} = MRF.filter_one(EmojiPolicy, status)

	refute Map.has_key?(filtered["object"], "emoji")
	end
	end
	end

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