Refactor reaction removals and add tests

d2m/converters/remove-reaction.test.js

@@ -0,0 +1,172 @@
+// @ts-check
+
+const {test} = require("supertape")
+const removeReaction = require("./remove-reaction")
+
+const BRIDGE_ID = "684280192553844747"
+
+function fakeSpecificReactionRemoval(userID, emoji, emojiID) {
+	return {
+		channel_id: "THE_CHANNEL",
+		message_id: "THE_MESSAGE",
+		user_id: userID,
+		emoji: {id: emojiID, name: emoji}
+	}
+}
+
+function fakeEmojiReactionRemoval(emoji, emojiID) {
+	return {
+		channel_id: "THE_CHANNEL",
+		message_id: "THE_MESSAGE",
+		emoji: {id: emojiID, name: emoji}
+	}
+}
+
+function fakeAllReactionRemoval() {
+	return {
+		channel_id: "THE_CHANNEL",
+		message_id: "THE_MESSAGE"
+	}
+}
+
+function fakeChunk(chunk) {
+	return {
+		chunk: chunk.map(({sender, key}, i) => ({
+			content: {
+				"m.relates_to": {
+					rel_type: "m.annotation",
+					event_id: "$message",
+					key
+				}
+			},
+			event_id: `$reaction_${i}`,
+			sender,
+			type: "m.reaction",
+			origin_server_ts: 0,
+			room_id: "!THE_ROOM",
+			unsigned: null
+		}))
+	}
+}
+
+test("remove reaction: a specific discord user's reaction is removed", t => {
+	const removals = removeReaction.removeReaction(
+		fakeSpecificReactionRemoval("820865262526005258", "🐈", null),
+		fakeChunk([{key: "🐈", sender: "@_ooye_crunch_god:cadence.moe"}]),
+		"🐈"
+	)
+	t.deepEqual(removals, [{
+		eventID: "$reaction_0",
+		mxid: "@_ooye_crunch_god:cadence.moe"
+	}])
+})
+
+test("remove reaction: a specific matrix user's reaction is removed", t => {
+	const removals = removeReaction.removeReaction(
+		fakeSpecificReactionRemoval(BRIDGE_ID, "🐈", null),
+		fakeChunk([{key: "🐈", sender: "@cadence:cadence.moe"}]),
+		"🐈"
+	)
+	t.deepEqual(removals, [{
+		eventID: "$reaction_0",
+		mxid: null,
+		hash: 2842343637291700751n
+	}])
+})
+
+test("remove reaction: a specific discord user's reaction is removed when there are multiple reactions", t => {
+	const removals = removeReaction.removeReaction(
+		fakeSpecificReactionRemoval("820865262526005258", "🐈", null),
+		fakeChunk([
+			{key: "🐈‍⬛", sender: "@_ooye_crunch_god:cadence.moe"},
+			{key: "🐈", sender: "@_ooye_crunch_god:cadence.moe"},
+			{key: "🐈", sender: "@_ooye_extremity:cadence.moe"},
+			{key: "🐈", sender: "@cadence:cadence.moe"},
+			{key: "🐈", sender: "@zoe:cadence.moe"}
+		]),
+		"🐈"
+	)
+	t.deepEqual(removals, [{
+		eventID: "$reaction_1",
+		mxid: "@_ooye_crunch_god:cadence.moe"
+	}])
+})
+
+test("remove reaction: a specific reaction leads to all matrix users' reaction of the emoji being removed", t => {
+	const removals = removeReaction.removeReaction(
+		fakeSpecificReactionRemoval(BRIDGE_ID, "🐈", null),
+		fakeChunk([
+			{key: "🐈", sender: "@_ooye_crunch_god:cadence.moe"},
+			{key: "🐈", sender: "@cadence:cadence.moe"},
+			{key: "🐈‍⬛", sender: "@zoe:cadence.moe"},
+			{key: "🐈", sender: "@zoe:cadence.moe"},
+			{key: "🐈", sender: "@_ooye_extremity:cadence.moe"}
+		]),
+		"🐈"
+	)
+	t.deepEqual(removals, [{
+		eventID: "$reaction_1",
+		mxid: null,
+		hash: -8635141960139030904n
+	}, {
+		eventID: "$reaction_3",
+		mxid: null,
+		hash: 326222869084879263n
+	}])
+})
+
+test("remove reaction: an emoji removes all instances of the emoij from both sides", t => {
+	const removals = removeReaction.removeEmojiReaction(
+		fakeEmojiReactionRemoval("🐈", null),
+		fakeChunk([
+			{key: "🐈", sender: "@_ooye_crunch_god:cadence.moe"},
+			{key: "🐈", sender: "@cadence:cadence.moe"},
+			{key: "🐈‍⬛", sender: "@zoe:cadence.moe"},
+			{key: "🐈", sender: "@zoe:cadence.moe"},
+			{key: "🐈", sender: "@_ooye_extremity:cadence.moe"}
+		]),
+		"🐈"
+	)
+	t.deepEqual(removals, [{
+		eventID: "$reaction_0",
+		mxid: "@_ooye_crunch_god:cadence.moe"
+	}, {
+		eventID: "$reaction_1",
+		mxid: null
+	}, {
+		eventID: "$reaction_3",
+		mxid: null
+	}, {
+		eventID: "$reaction_4",
+		mxid: "@_ooye_extremity:cadence.moe"
+	}])
+})
+
+test("remove reaction: remove all removes all from both sides", t => {
+	const removals = removeReaction.removeAllReactions(
+		fakeAllReactionRemoval(),
+		fakeChunk([
+			{key: "🐈", sender: "@_ooye_crunch_god:cadence.moe"},
+			{key: "🐈", sender: "@cadence:cadence.moe"},
+			{key: "🐈‍⬛", sender: "@zoe:cadence.moe"},
+			{key: "🐈", sender: "@zoe:cadence.moe"},
+			{key: "🐈", sender: "@_ooye_extremity:cadence.moe"}
+		])
+	)
+	t.deepEqual(removals, [{
+		eventID: "$reaction_0",
+		mxid: "@_ooye_crunch_god:cadence.moe"
+	}, {
+		eventID: "$reaction_1",
+		mxid: null
+	}, {
+		eventID: "$reaction_2",
+		mxid: null
+	}, {
+		eventID: "$reaction_3",
+		mxid: null
+	}, {
+		eventID: "$reaction_4",
+		mxid: "@_ooye_extremity:cadence.moe"
+	}])
+})