element-web/test/unit-tests/components/views/elements/ReplyChain-test.tsx

/*
Copyright 2024 New Vector Ltd.
Copyright 2021 The Matrix.org Foundation C.I.C.

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/

import * as testUtils from "../../../../test-utils";
import { getParentEventId } from "../../../../../src/utils/Reply";

describe("ReplyChain", () => {
    describe("getParentEventId", () => {
        it("retrieves relation reply from unedited event", () => {
            const originalEventWithRelation = testUtils.mkEvent({
                event: true,
                type: "m.room.message",
                content: {
                    "msgtype": "m.text",
                    "body": "> Reply to this message\n\n foo",
                    "m.relates_to": {
                        "m.in_reply_to": {
                            event_id: "$qkjmFBTEc0VvfVyzq1CJuh1QZi_xDIgNEFjZ4Pq34og",
                        },
                    },
                },
                user: "some_other_user",
                room: "room_id",
            });

            expect(getParentEventId(originalEventWithRelation)).toStrictEqual(
                "$qkjmFBTEc0VvfVyzq1CJuh1QZi_xDIgNEFjZ4Pq34og",
            );
        });

        it("retrieves relation reply from original event when edited", () => {
            const originalEventWithRelation = testUtils.mkEvent({
                event: true,
                type: "m.room.message",
                content: {
                    "msgtype": "m.text",
                    "body": "> Reply to this message\n\n foo",
                    "m.relates_to": {
                        "m.in_reply_to": {
                            event_id: "$qkjmFBTEc0VvfVyzq1CJuh1QZi_xDIgNEFjZ4Pq34og",
                        },
                    },
                },
                user: "some_other_user",
                room: "room_id",
            });

            const editEvent = testUtils.mkEvent({
                event: true,
                type: "m.room.message",
                content: {
                    "msgtype": "m.text",
                    "body": "> Reply to this message\n\n * foo bar",
                    "m.new_content": {
                        msgtype: "m.text",
                        body: "foo bar",
                    },
                    "m.relates_to": {
                        rel_type: "m.replace",
                        event_id: originalEventWithRelation.getId(),
                    },
                },
                user: "some_other_user",
                room: "room_id",
            });

            // The edit replaces the original event
            originalEventWithRelation.makeReplaced(editEvent);

            // The relation should be pulled from the original event
            expect(getParentEventId(originalEventWithRelation)).toStrictEqual(
                "$qkjmFBTEc0VvfVyzq1CJuh1QZi_xDIgNEFjZ4Pq34og",
            );
        });
    });
});