element-web-Github/playwright/e2e/timeline/timeline.spec.ts

/*
Copyright 2024 New Vector Ltd.
Copyright 2022, 2023 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 fs from "node:fs";

import type { Locator, Page } from "@playwright/test";
import type { ISendEventResponse, EventType, MsgType } from "matrix-js-sdk/src/matrix";
import { test, expect } from "../../element-web-test";
import { SettingLevel } from "../../../src/settings/SettingLevel";
import { Layout } from "../../../src/settings/enums/Layout";
import { Client } from "../../pages/client";
import { ElementAppPage } from "../../pages/ElementAppPage";
import { Bot } from "../../pages/bot";

// The avatar size used in the timeline
const AVATAR_SIZE = 30;
// The resize method used in the timeline
const AVATAR_RESIZE_METHOD = "crop";

const ROOM_NAME = "Test room";
const OLD_AVATAR = fs.readFileSync("playwright/sample-files/riot.png");
const NEW_AVATAR = fs.readFileSync("playwright/sample-files/element.png");
const OLD_NAME = "Alan";
const NEW_NAME = "Alan (away)";

const getEventTilesWithBodies = (page: Page): Locator => {
    return page.locator(".mx_EventTile").filter({ has: page.locator(".mx_EventTile_body") });
};

const expectDisplayName = async (e: Locator, displayName: string): Promise<void> => {
    await expect(e.locator(".mx_DisambiguatedProfile_displayName")).toHaveText(displayName);
};

const expectAvatar = async (cli: Client, e: Locator, avatarUrl: string): Promise<void> => {
    const size = await e.page().evaluate((size) => size * window.devicePixelRatio, AVATAR_SIZE);
    const url = await cli.evaluate(
        (client, { avatarUrl, size, resizeMethod }) => {
            // eslint-disable-next-line no-restricted-properties
            return client.mxcUrlToHttp(avatarUrl, size, size, resizeMethod, false, true);
        },
        { avatarUrl, size, resizeMethod: AVATAR_RESIZE_METHOD },
    );
    await expect(e.locator(".mx_BaseAvatar img")).toHaveAttribute("src", url);
};

const sendEvent = async (client: Client, roomId: string, html = false): Promise<ISendEventResponse> => {
    const content = {
        msgtype: "m.text" as MsgType,
        body: "Message",
        format: undefined,
        formatted_body: undefined,
    };
    if (html) {
        content.format = "org.matrix.custom.html";
        content.formatted_body = "<b>Message</b>";
    }
    return client.sendEvent(roomId, null, "m.room.message" as EventType, content);
};

const sendImage = async (
    client: Client,
    roomId: string,
    pngBytes: Buffer,
    additionalContent?: any,
): Promise<ISendEventResponse> => {
    const upload = await client.uploadContent(pngBytes, { name: "image.png", type: "image/png" });
    return client.sendEvent(roomId, null, "m.room.message" as EventType, {
        ...(additionalContent ?? {}),

        msgtype: "m.image" as MsgType,
        body: "image.png",
        url: upload.content_uri,
    });
};

test.describe("Timeline", () => {
    test.use({
        displayName: OLD_NAME,
        room: async ({ app, user }, use) => {
            const roomId = await app.client.createRoom({ name: ROOM_NAME });
            await use({ roomId });
        },
    });

    let oldAvatarUrl: string;
    let newAvatarUrl: string;

    test.describe("useOnlyCurrentProfiles", () => {
        test.beforeEach(async ({ app, user }) => {
            ({ content_uri: oldAvatarUrl } = await app.client.uploadContent(OLD_AVATAR, { type: "image/png" }));
            await app.client.setAvatarUrl(oldAvatarUrl);
            ({ content_uri: newAvatarUrl } = await app.client.uploadContent(NEW_AVATAR, { type: "image/png" }));
        });

        test("should show historical profiles if disabled", async ({ page, app, room }) => {
            await app.settings.setValue("useOnlyCurrentProfiles", null, SettingLevel.ACCOUNT, false);
            await sendEvent(app.client, room.roomId);
            await app.client.setDisplayName("Alan (away)");
            await app.client.setAvatarUrl(newAvatarUrl);
            // XXX: If we send the second event too quickly, there won't be
            // enough time for the client to register the profile change
            await page.waitForTimeout(500);
            await sendEvent(app.client, room.roomId);
            await app.viewRoomByName(ROOM_NAME);

            const events = getEventTilesWithBodies(page);
            await expect(events).toHaveCount(2);
            await expectDisplayName(events.nth(0), OLD_NAME);
            await expectAvatar(app.client, events.nth(0), oldAvatarUrl);
            await expectDisplayName(events.nth(1), NEW_NAME);
            await expectAvatar(app.client, events.nth(1), newAvatarUrl);
        });

        test("should not show historical profiles if enabled", async ({ page, app, room }) => {
            await app.settings.setValue("useOnlyCurrentProfiles", null, SettingLevel.ACCOUNT, true);
            await sendEvent(app.client, room.roomId);
            await app.client.setDisplayName(NEW_NAME);
            await app.client.setAvatarUrl(newAvatarUrl);
            // XXX: If we send the second event too quickly, there won't be
            // enough time for the client to register the profile change
            await page.waitForTimeout(500);
            await sendEvent(app.client, room.roomId);
            await app.viewRoomByName(ROOM_NAME);

            const events = getEventTilesWithBodies(page);
            await expect(events).toHaveCount(2);
            for (const e of await events.all()) {
                await expectDisplayName(e, NEW_NAME);
                await expectAvatar(app.client, e, newAvatarUrl);
            }
        });
    });

    test.describe("configure room", () => {
        test("should create and configure a room on IRC layout", async ({ page, app, room }) => {
            await page.goto(`/#/room/${room.roomId}`);
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);
            await expect(
                page.locator(
                    ".mx_RoomView_body .mx_GenericEventListSummary[data-layout='irc'] .mx_GenericEventListSummary_summary",
                    { hasText: `${OLD_NAME} created and configured the room.` },
                ),
            ).toBeVisible();

            // wait for the date separator to appear to have a stable screenshot
            await expect(page.locator(".mx_TimelineSeparator")).toHaveText("today");

            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot("configured-room-irc-layout.png");
        });

        test("should have an expanded generic event list summary (GELS) on IRC layout", async ({ page, app, room }) => {
            await page.goto(`/#/room/${room.roomId}`);
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);

            // Wait until configuration is finished
            await expect(
                page.locator(
                    ".mx_RoomView_body .mx_GenericEventListSummary[data-layout='irc'] .mx_GenericEventListSummary_summary",
                    { hasText: `${OLD_NAME} created and configured the room.` },
                ),
            ).toBeVisible();

            const gels = page.locator(".mx_GenericEventListSummary");
            // Click "expand" link button
            await gels.getByRole("button", { name: "Expand" }).click();
            // Assert that the "expand" link button worked
            await expect(gels.getByRole("button", { name: "Collapse" })).toBeVisible();

            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot("expanded-gels-irc-layout.png", {
                mask: [page.locator(".mx_MessageTimestamp")],
                css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
            });
        });

        test("should have an expanded generic event list summary (GELS) on compact modern/group layout", async ({
            page,
            app,
            room,
        }) => {
            await page.goto(`/#/room/${room.roomId}`);

            // Set compact modern layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Group);
            await app.settings.setValue("useCompactLayout", null, SettingLevel.DEVICE, true);

            // Wait until configuration is finished
            await expect(
                page.locator(".mx_RoomView_body .mx_GenericEventListSummary[data-layout='group']", {
                    hasText: `${OLD_NAME} created and configured the room.`,
                }),
            ).toBeVisible();

            const gels = page.locator(".mx_GenericEventListSummary");
            // Click "expand" link button
            await gels.getByRole("button", { name: "Expand" }).click();
            // Assert that the "expand" link button worked
            await expect(gels.getByRole("button", { name: "Collapse" })).toBeVisible();

            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot("expanded-gels-modern-layout.png", {
                mask: [page.locator(".mx_MessageTimestamp")],
                css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
            });
        });

        test("should click 'collapse' on the first hovered info event line inside GELS on bubble layout", async ({
            page,
            app,
            room,
        }) => {
            // This test checks clickability of the "Collapse" link button, which had been covered with
            // MessageActionBar's safe area - https://github.com/vector-im/element-web/issues/22864

            await page.goto(`/#/room/${room.roomId}`);
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Bubble);
            await expect(
                page.locator(
                    ".mx_RoomView_body .mx_GenericEventListSummary[data-layout='bubble'] .mx_GenericEventListSummary_summary",
                    { hasText: `${OLD_NAME} created and configured the room.` },
                ),
            ).toBeVisible();

            const gels = page.locator(".mx_GenericEventListSummary");
            // Click "expand" link button
            await gels.getByRole("button", { name: "Expand" }).click();
            // Assert that the "expand" link button worked
            await expect(gels.getByRole("button", { name: "Collapse" })).toBeVisible();

            // Make sure spacer is not visible on bubble layout
            await expect(
                page.locator(".mx_GenericEventListSummary[data-layout=bubble] .mx_GenericEventListSummary_spacer"),
            ).not.toBeVisible(); // See: _GenericEventListSummary.pcss

            // Save snapshot of expanded generic event list summary on bubble layout
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot("expanded-gels-bubble-layout.png", {
                // Exclude timestamp from snapshot
                mask: [page.locator(".mx_MessageTimestamp")],
            });

            // Click "collapse" link button on the first hovered info event line
            const firstTile = gels.locator(".mx_GenericEventListSummary_unstyledList .mx_EventTile_info:first-of-type");
            await firstTile.hover();
            await expect(firstTile.getByRole("toolbar", { name: "Message Actions" })).toBeVisible();
            await gels.getByRole("button", { name: "Collapse" }).click();

            // Assert that "collapse" link button worked
            await expect(gels.getByRole("button", { name: "Expand" })).toBeVisible();

            // Save snapshot of collapsed generic event list summary on bubble layout
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot("collapsed-gels-bubble-layout.png", {
                mask: [page.locator(".mx_MessageTimestamp")],
            });
        });

        test("should add inline start margin to an event line on IRC layout", async ({
            page,
            app,
            room,
            axe,
            checkA11y,
        }) => {
            axe.disableRules("color-contrast");

            await page.goto(`/#/room/${room.roomId}`);
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);

            // Wait until configuration is finished
            await expect(
                page.locator(
                    ".mx_RoomView_body .mx_GenericEventListSummary[data-layout='irc'] .mx_GenericEventListSummary_summary",
                    { hasText: `${OLD_NAME} created and configured the room.` },
                ),
            ).toBeVisible();

            // Click "expand" link button
            await page.locator(".mx_GenericEventListSummary").getByRole("button", { name: "Expand" }).click();

            // Check the event line has margin instead of inset property
            // cf. _EventTile.pcss
            //  --EventTile_irc_line_info-margin-inline-start
            //  = calc(var(--name-width) + var(--icon-width) + 1 * var(--right-padding))
            //  = 80 + 14 + 5 = 99px

            const firstEventLineIrc = page.locator(
                ".mx_EventTile_info[data-layout=irc]:first-of-type .mx_EventTile_line",
            );
            await expect(firstEventLineIrc).toHaveCSS("margin-inline-start", "99px");
            await expect(firstEventLineIrc).toHaveCSS("inset-inline-start", "0px");

            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot(
                "event-line-inline-start-margin-irc-layout.png",
                {
                    // Exclude timestamp and read marker from snapshot
                    mask: [page.locator(".mx_MessageTimestamp")],
                    css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
                },
            );
            await checkA11y();
        });
    });

    test.describe("message displaying", () => {
        const messageEdit = async (page: Page) => {
            const line = page.locator(".mx_EventTile .mx_EventTile_line", { hasText: "Message" });
            await line.hover();
            await line.getByRole("toolbar", { name: "Message Actions" }).getByRole("button", { name: "Edit" }).click();
            await page.getByRole("textbox", { name: "Edit message" }).pressSequentially("Edit");
            await page.getByRole("textbox", { name: "Edit message" }).press("Enter");

            // Assert that the edited message and the link button are found
            // Regex patterns due to the edited date
            await expect(
                page.locator(".mx_EventTile .mx_EventTile_line", { hasText: "MessageEdit" }).getByRole("button", {
                    name: /Edited at .*? Click to view edits./,
                }),
            ).toBeVisible();
        };

        test("should align generic event list summary with messages and emote on IRC layout", async ({
            page,
            app,
            room,
        }) => {
            // This test aims to check:
            // 1. Alignment of collapsed GELS (generic event list summary) and messages
            // 2. Alignment of expanded GELS and messages
            // 3. Alignment of expanded GELS and placeholder of deleted message
            // 4. Alignment of expanded GELS, placeholder of deleted message, and emote

            await page.goto(`/#/room/${room.roomId}`);
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);

            // Wait until configuration is finished
            await expect(
                page
                    .locator(".mx_GenericEventListSummary_summary")
                    .getByText(`${OLD_NAME} created and configured the room.`),
            ).toBeVisible();

            // Send messages
            const composer = app.getComposerField();
            await composer.fill("Hello Mr. Bot");
            await composer.press("Enter");
            await composer.fill("Hello again, Mr. Bot");
            await composer.press("Enter");

            // Make sure the second message was sent
            await expect(
                page.locator(".mx_RoomView_MessageList > .mx_EventTile_last .mx_EventTile_receiptSent"),
            ).toBeVisible();

            // 1. Alignment of collapsed GELS (generic event list summary) and messages
            // Check inline start spacing of collapsed GELS
            // See: _EventTile.pcss
            // .mx_GenericEventListSummary[data-layout="irc"] > .mx_EventTile_line
            //  = var(--name-width) + var(--icon-width) + var(--MessageTimestamp-width) + 2 * var(--right-padding)
            //  = 80 + 14 + 46 + 2 * 5
            //  = 150px
            await expect(page.locator(".mx_GenericEventListSummary[data-layout=irc] > .mx_EventTile_line")).toHaveCSS(
                "padding-inline-start",
                "150px",
            );
            // Check width and spacing values of elements in .mx_EventTile, which should be equal to 150px
            // --right-padding should be applied
            for (const locator of await page.locator(".mx_EventTile > a").all()) {
                if (await locator.isVisible()) {
                    await expect(locator).toHaveCSS("margin-right", "5px");
                }
            }
            // --name-width width zero inline end margin should be applied
            for (const locator of await page.locator(".mx_EventTile .mx_DisambiguatedProfile").all()) {
                await expect(locator).toHaveCSS("width", "80px");
                await expect(locator).toHaveCSS("margin-inline-end", "0px");
            }
            // --icon-width should be applied
            for (const locator of await page.locator(".mx_EventTile .mx_EventTile_avatar > .mx_BaseAvatar").all()) {
                await expect(locator).toHaveCSS("width", "14px");
            }
            // var(--MessageTimestamp-width) should be applied
            for (const locator of await page.locator(".mx_EventTile > a").all()) {
                await expect(locator).toHaveCSS("min-width", "46px");
            }
            // Record alignment of collapsed GELS and messages on messagePanel
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot(
                "collapsed-gels-and-messages-irc-layout.png",
                {
                    // Exclude timestamp from snapshot of mx_MainSplit
                    mask: [page.locator(".mx_MessageTimestamp")],
                },
            );

            // 2. Alignment of expanded GELS and messages
            // Click "expand" link button
            await page.locator(".mx_GenericEventListSummary").getByRole("button", { name: "Expand" }).click();
            // Check inline start spacing of info line on expanded GELS
            // See: _EventTile.pcss
            // --EventTile_irc_line_info-margin-inline-start
            // = 80 + 14 + 1 * 5
            await expect(
                page.locator(".mx_EventTile[data-layout=irc].mx_EventTile_info:first-of-type .mx_EventTile_line"),
            ).toHaveCSS("margin-inline-start", "99px");
            // Record alignment of expanded GELS and messages on messagePanel
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot("expanded-gels-and-messages-irc-layout.png", {
                // Exclude timestamp from snapshot of mx_MainSplit
                mask: [page.locator(".mx_MessageTimestamp")],
            });

            // 3. Alignment of expanded GELS and placeholder of deleted message
            // Delete the second (last) message
            const lastTile = page.locator(".mx_RoomView_MessageList > .mx_EventTile_last");
            await lastTile.hover();
            await lastTile.getByRole("button", { name: "Options" }).click();
            await page.getByRole("menuitem", { name: "Remove" }).click();
            // Confirm deletion
            await page.locator(".mx_Dialog_buttons").getByRole("button", { name: "Remove" }).click();
            // Make sure the dialog was closed and the second (last) message was redacted
            await expect(page.locator(".mx_Dialog")).not.toBeVisible();
            await expect(page.locator(".mx_GenericEventListSummary .mx_EventTile_last .mx_RedactedBody")).toBeVisible();
            await expect(
                page.locator(".mx_GenericEventListSummary .mx_EventTile_last .mx_EventTile_receiptSent"),
            ).toBeVisible();
            // Record alignment of expanded GELS and placeholder of deleted message on messagePanel
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot("expanded-gels-redaction-placeholder.png", {
                // Exclude timestamp from snapshot of mx_MainSplit
                mask: [page.locator(".mx_MessageTimestamp")],
            });

            // 4. Alignment of expanded GELS, placeholder of deleted message, and emote
            // Send a emote
            await page
                .locator(".mx_RoomView_body")
                .getByRole("textbox", { name: "Send a message…" })
                .fill("/me says hello to Mr. Bot");
            await page.locator(".mx_RoomView_body").getByRole("textbox", { name: "Send a message…" }).press("Enter");
            // Check inline start margin of its avatar
            // Here --right-padding is for the avatar on the message line
            // See: _IRCLayout.pcss
            // .mx_IRCLayout .mx_EventTile_emote .mx_EventTile_avatar
            // = calc(var(--name-width) + var(--icon-width) + 1 * var(--right-padding))
            // = 80 + 14 + 1 * 5
            await expect(page.locator(".mx_EventTile_emote .mx_EventTile_avatar")).toHaveCSS("margin-left", "99px");
            // Make sure emote was sent
            await expect(page.locator(".mx_EventTile_last.mx_EventTile_emote .mx_EventTile_receiptSent")).toBeVisible();
            // Record alignment of expanded GELS, placeholder of deleted message, and emote
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot("expanded-gels-emote-irc-layout.png", {
                // Exclude timestamp from snapshot of mx_MainSplit
                mask: [page.locator(".mx_MessageTimestamp")],
            });
        });

        test("should render EventTiles on IRC, modern (group), and bubble layout", async ({ page, app, room }) => {
            const screenshotOptions = {
                // Hide because flaky - See https://github.com/vector-im/element-web/issues/24957
                mask: [page.locator(".mx_MessageTimestamp")],
                css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
            };

            await sendEvent(app.client, room.roomId);
            await sendEvent(app.client, room.roomId); // check continuation
            await sendEvent(app.client, room.roomId); // check the last EventTile

            await page.goto(`/#/room/${room.roomId}`);
            const composer = app.getComposerField();
            // Send a plain text message
            await composer.fill("Hello");
            await composer.press("Enter");
            // Send a big emoji
            await composer.fill("🏀");
            await composer.press("Enter");
            // Send an inline emoji
            await composer.fill("This message has an inline emoji 👒");
            await composer.press("Enter");

            await expect(page.locator(".mx_RoomView").getByText("This message has an inline emoji 👒")).toBeVisible();

            ////////////////////////////////////////////////////////////////////////////////////////////////////////////
            // IRC layout
            ////////////////////////////////////////////////////////////////////////////////////////////////////////////

            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);

            // Wait until configuration is finished
            await expect(
                page
                    .locator(".mx_GenericEventListSummary_summary")
                    .getByText(`${OLD_NAME} created and configured the room.`),
            ).toBeVisible();

            await app.timeline.scrollToBottom();
            await expect(
                page.locator(".mx_RoomView").getByText("This message has an inline emoji 👒"),
            ).toBeInViewport();
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot(
                "event-tiles-irc-layout.png",
                screenshotOptions,
            );

            ////////////////////////////////////////////////////////////////////////////////////////////////////////////
            // Group/modern layout
            ////////////////////////////////////////////////////////////////////////////////////////////////////////////

            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Group);

            // Check that the last EventTile is rendered
            await app.timeline.scrollToBottom();
            await expect(
                page.locator(".mx_RoomView").getByText("This message has an inline emoji 👒"),
            ).toBeInViewport();
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot(
                "event-tiles-modern-layout.png",
                screenshotOptions,
            );

            // Check the same thing for compact layout
            await app.settings.setValue("useCompactLayout", null, SettingLevel.DEVICE, true);

            // Check that the last EventTile is rendered
            await app.timeline.scrollToBottom();
            await expect(
                page.locator(".mx_RoomView").getByText("This message has an inline emoji 👒"),
            ).toBeInViewport();
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot(
                "event-tiles-compact-modern-layout.png",
                screenshotOptions,
            );

            ////////////////////////////////////////////////////////////////////////////////////////////////////////////
            // Message bubble layout
            ////////////////////////////////////////////////////////////////////////////////////////////////////////////

            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Bubble);

            await app.timeline.scrollToBottom();
            await expect(
                page.locator(".mx_RoomView").getByText("This message has an inline emoji 👒"),
            ).toBeInViewport();
            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot(
                "event-tiles-bubble-layout.png",
                screenshotOptions,
            );
        });

        test("should set inline start padding to a hidden event line", async ({ page, app, room }) => {
            test.skip(
                true,
                "Disabled due to screenshot test being flaky - https://github.com/element-hq/element-web/issues/26890",
            );
            await sendEvent(app.client, room.roomId);
            await page.goto(`/#/room/${room.roomId}`);
            await app.settings.setValue("showHiddenEventsInTimeline", null, SettingLevel.DEVICE, true);
            await expect(
                page
                    .locator(".mx_GenericEventListSummary_summary")
                    .getByText(`${OLD_NAME} created and configured the room.`),
            ).toBeVisible();

            // Edit message
            await messageEdit(page);

            // Click timestamp to highlight hidden event line
            await page.locator(".mx_RoomView_body .mx_EventTile_info .mx_MessageTimestamp").click();

            // should not add inline start padding to a hidden event line on IRC layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);
            await expect(
                page.locator(".mx_EventTile[data-layout=irc].mx_EventTile_info .mx_EventTile_line").first(),
            ).toHaveCSS("padding-inline-start", "0px");

            // Exclude timestamp and read marker from snapshot
            const screenshotOptions = {
                mask: [page.locator(".mx_MessageTimestamp")],
                css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
            };

            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot(
                "hidden-event-line-zero-padding-irc-layout.png",
                screenshotOptions,
            );

            // should add inline start padding to a hidden event line on modern layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Group);
            // calc(var(--EventTile_group_line-spacing-inline-start) + 20px) = 64 + 20 = 84px
            await expect(
                page.locator(".mx_EventTile[data-layout=group].mx_EventTile_info .mx_EventTile_line").first(),
            ).toHaveCSS("padding-inline-start", "84px");

            await expect(page.locator(".mx_MainSplit")).toMatchScreenshot(
                "hidden-event-line-padding-modern-layout.png",
                screenshotOptions,
            );
        });

        test("should click view source event toggle", async ({ page, app, room }) => {
            // This test checks:
            // 1. clickability of top left of view source event toggle
            // 2. clickability of view source toggle on IRC layout

            // Exclude timestamp from snapshot
            const screenshotOptions = {
                mask: [page.locator(".mx_MessageTimestamp")],
            };

            await sendEvent(app.client, room.roomId);
            await page.goto(`/#/room/${room.roomId}`);
            await app.settings.setValue("showHiddenEventsInTimeline", null, SettingLevel.DEVICE, true);
            await expect(
                page
                    .locator(".mx_GenericEventListSummary_summary")
                    .getByText(OLD_NAME + " created and configured the room."),
            ).toBeVisible();

            // Edit message
            await messageEdit(page);

            // 1. clickability of top left of view source event toggle

            // Click top left of the event toggle, which should not be covered by MessageActionBar's safe area
            const viewSourceEventGroup = page.locator(".mx_EventTile_last[data-layout=group] .mx_ViewSourceEvent");
            await viewSourceEventGroup.hover();
            await viewSourceEventGroup
                .getByRole("button", { name: "toggle event" })
                .click({ position: { x: 0, y: 0 } });

            // Make sure the expand toggle works
            const viewSourceEventExpanded = page.locator(
                ".mx_EventTile_last[data-layout=group] .mx_ViewSourceEvent_expanded",
            );
            await viewSourceEventExpanded.hover();
            const toggleEventButton = viewSourceEventExpanded.getByRole("button", { name: "toggle event" });
            // Check size and position of toggle on expanded view source event
            // See: _ViewSourceEvent.pcss
            await expect(toggleEventButton).toHaveCSS("height", "12px"); // --ViewSourceEvent_toggle-size
            await expect(toggleEventButton).toHaveCSS("align-self", "flex-end");
            // Click again to collapse the source
            await toggleEventButton.click({ position: { x: 0, y: 0 } });

            // Make sure the collapse toggle works
            await expect(
                page.locator(".mx_EventTile_last[data-layout=group] .mx_ViewSourceEvent_expanded"),
            ).not.toBeVisible();

            // 2. clickability of view source toggle on IRC layout

            // Enable IRC layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);

            // Hover the view source toggle on IRC layout
            const viewSourceEventIrc = page.locator(
                ".mx_GenericEventListSummary[data-layout=irc] .mx_EventTile .mx_ViewSourceEvent",
            );
            await viewSourceEventIrc.hover();
            await expect(viewSourceEventIrc).toMatchScreenshot(
                "hovered-hidden-event-line-irc-layout.png",
                screenshotOptions,
            );

            // Click view source event toggle
            await viewSourceEventIrc.getByRole("button", { name: "toggle event" }).click({ position: { x: 0, y: 0 } });

            // Make sure the expand toggle worked
            await expect(page.locator(".mx_EventTile[data-layout=irc] .mx_ViewSourceEvent_expanded")).toBeVisible();
        });

        test("should render file size in kibibytes on a file tile", async ({ page, room }) => {
            await page.goto(`/#/room/${room.roomId}`);
            await expect(
                page
                    .locator(".mx_GenericEventListSummary_summary")
                    .getByText(OLD_NAME + " created and configured the room."),
            ).toBeVisible();

            // Upload a file from the message composer
            await page
                .locator(".mx_MessageComposer_actions input[type='file']")
                .setInputFiles("playwright/sample-files/matrix-org-client-versions.json");

            // Click "Upload" button
            await page.locator(".mx_Dialog").getByRole("button", { name: "Upload" }).click();

            // Wait until the file is sent
            await expect(page.locator(".mx_RoomView_statusArea_expanded")).not.toBeVisible();
            await expect(page.locator(".mx_EventTile.mx_EventTile_last .mx_EventTile_receiptSent")).toBeVisible();

            // Assert that the file size is displayed in kibibytes (1024 bytes), not kilobytes (1000 bytes)
            // See: https://github.com/vector-im/element-web/issues/24866
            await expect(
                page.locator(".mx_EventTile_last .mx_MFileBody_info_filename").getByText(/1.12 KB/),
            ).toBeVisible();
        });

        test("should render url previews", async ({ page, app, room, axe, checkA11y, context }) => {
            axe.disableRules("color-contrast");

            // Element Web uses a Service Worker to rewrite unauthenticated media requests to authenticated ones, but
            // the page can't see this happening. We intercept the route at the BrowserContext to ensure we get it
            // post-worker, but we can't waitForResponse on that, so the page context is still used there. Because
            // the page doesn't see the rewrite, it waits for the unauthenticated route. This is only confusing until
            // the js-sdk (and thus the app as a whole) switches to using authenticated endpoints by default, hopefully.
            await context.route(
                "**/_matrix/client/v1/media/thumbnail/matrix.org/2022-08-16_yaiSVSRIsNFfxDnV?*",
                async (route) => {
                    await route.fulfill({
                        path: "playwright/sample-files/riot.png",
                    });
                },
            );
            await page.route(
                "**/_matrix/media/v3/preview_url?url=https%3A%2F%2Fcall.element.io%2F&ts=*",
                async (route) => {
                    await route.fulfill({
                        json: {
                            "og:title": "Element Call",
                            "og:description": null,
                            "og:image:width": 48,
                            "og:image:height": 48,
                            "og:image": "mxc://matrix.org/2022-08-16_yaiSVSRIsNFfxDnV",
                            "og:image:type": "image/png",
                            "matrix:image:size": 2121,
                        },
                    });
                },
            );

            const requestPromises: Promise<any>[] = [
                page.waitForResponse("**/_matrix/media/v3/preview_url?url=https%3A%2F%2Fcall.element.io%2F&ts=*"),
                // see context.route above for why we listen for the unauthenticated endpoint
                page.waitForResponse("**/_matrix/media/v3/thumbnail/matrix.org/2022-08-16_yaiSVSRIsNFfxDnV?*"),
            ];

            await app.client.sendMessage(room.roomId, "https://call.element.io/");
            await page.goto(`/#/room/${room.roomId}`);

            await expect(page.locator(".mx_LinkPreviewWidget").getByText("Element Call")).toBeVisible();
            await Promise.all(requestPromises);

            await checkA11y();

            await app.timeline.scrollToBottom();
            await expect(page.locator(".mx_EventTile_last")).toMatchScreenshot("url-preview.png", {
                // Exclude timestamp and read marker from snapshot
                mask: [page.locator(".mx_MessageTimestamp")],
                css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
            });
        });

        test.describe("on search results panel", () => {
            test("should highlight search result words regardless of formatting", async ({ page, app, room }) => {
                await sendEvent(app.client, room.roomId);
                await sendEvent(app.client, room.roomId, true);
                await page.goto(`/#/room/${room.roomId}`);

                await app.toggleRoomInfoPanel();

                await page.locator(".mx_RoomSummaryCard_search").getByRole("searchbox").fill("Message");
                await page.locator(".mx_RoomSummaryCard_search").getByRole("searchbox").press("Enter");

                await expect(page.locator(".mx_RoomSearchAuxPanel")).toMatchScreenshot("search-aux-panel.png");

                for (const locator of await page
                    .locator(".mx_EventTile:not(.mx_EventTile_contextual) .mx_EventTile_searchHighlight")
                    .all()) {
                    await expect(locator).toBeVisible();
                }
                await expect(page.locator(".mx_RoomView_searchResultsPanel")).toMatchScreenshot(
                    "highlighted-search-results.png",
                );
            });

            test("should render a fully opaque textual event", async ({ page, app, room }) => {
                const stringToSearch = "Message"; // Same with string sent with sendEvent()

                await sendEvent(app.client, room.roomId);

                await page.goto(`/#/room/${room.roomId}`);

                // Open a room setting dialog
                await app.toggleRoomInfoPanel();
                await page.getByRole("menuitem", { name: "Settings" }).click();

                // Set a room topic to render a TextualEvent
                await page.getByRole("textbox", { name: "Room Topic" }).type(`This is a room for ${stringToSearch}.`);
                await page.getByRole("button", { name: "Save" }).click();

                await app.closeDialog();

                // Assert that the TextualEvent is rendered
                await expect(
                    page.getByText(`${OLD_NAME} changed the topic to "This is a room for ${stringToSearch}.".`),
                ).toHaveClass(/mx_TextualEvent/);

                // Search the string to display both the message and TextualEvent on search results panel
                await page.locator(".mx_RoomSummaryCard_search").getByRole("searchbox").fill(stringToSearch);
                await page.locator(".mx_RoomSummaryCard_search").getByRole("searchbox").press("Enter");

                // On search results panel
                const resultsPanel = page.locator(".mx_RoomView_searchResultsPanel");
                // Assert that contextual event tiles are translucent
                for (const locator of await resultsPanel.locator(".mx_EventTile.mx_EventTile_contextual").all()) {
                    await expect(locator).toHaveCSS("opacity", "0.4");
                }
                // Assert that the TextualEvent is fully opaque (visually solid).
                for (const locator of await resultsPanel.locator(".mx_EventTile .mx_TextualEvent").all()) {
                    await expect(locator).toHaveCSS("opacity", "1");
                }

                await expect(page.locator(".mx_RoomView_searchResultsPanel")).toMatchScreenshot(
                    "search-results-with-TextualEvent.png",
                );
            });
        });
    });

    test.describe("message sending", () => {
        const MESSAGE = "Hello world";
        const reply = "Reply";
        const viewRoomSendMessageAndSetupReply = async (page: Page, app: ElementAppPage, roomId: string) => {
            // View room
            await page.goto(`/#/room/${roomId}`);

            // Send a message
            const composer = app.getComposerField();
            await composer.fill(MESSAGE);
            await composer.press("Enter");

            // Reply to the message
            const lastTile = page.locator(".mx_EventTile_last");
            await expect(lastTile.getByText(MESSAGE)).toBeVisible();
            await lastTile.hover();
            await lastTile.getByRole("button", { name: "Reply", exact: true }).click();
        };

        // For clicking the reply button on the last line
        const clickButtonReply = async (page: Page): Promise<void> => {
            const lastTile = page.locator(".mx_RoomView_MessageList .mx_EventTile_last");
            await lastTile.hover();
            await lastTile.getByRole("button", { name: "Reply", exact: true }).click();
        };

        test("can reply with a text message", async ({ page, app, room }) => {
            await viewRoomSendMessageAndSetupReply(page, app, room.roomId);

            await app.getComposerField().fill(reply);
            await app.getComposerField().press("Enter");

            const eventTileLine = page.locator(".mx_RoomView_body .mx_EventTile_last .mx_EventTile_line");
            await expect(eventTileLine.locator(".mx_ReplyTile .mx_MTextBody").getByText(MESSAGE)).toBeVisible();
            await expect(eventTileLine.getByText(reply)).toHaveCount(1);
        });

        test("can reply with a voice message", async ({ page, app, room, context }) => {
            await context.grantPermissions(["microphone"]);
            await viewRoomSendMessageAndSetupReply(page, app, room.roomId);

            const composerOptions = await app.openMessageComposerOptions();
            await composerOptions.getByRole("menuitem", { name: "Voice Message" }).click();

            // Record an empty message
            await page.waitForTimeout(3000);

            const roomViewBody = page.locator(".mx_RoomView_body");
            await roomViewBody
                .locator(".mx_MessageComposer")
                .getByRole("button", { name: "Send voice message" })
                .click();

            const lastEventTileLine = roomViewBody.locator(".mx_EventTile_last .mx_EventTile_line");
            await expect(lastEventTileLine.locator(".mx_ReplyTile .mx_MTextBody").getByText(MESSAGE)).toBeVisible();

            await expect(lastEventTileLine.locator(".mx_MVoiceMessageBody")).toHaveCount(1);
        });

        test("should not be possible to send flag with regional emojis", async ({ page, app, room }) => {
            await page.goto(`/#/room/${room.roomId}`);

            // Send a message
            await app.getComposerField().pressSequentially(":regional_indicator_a");
            await page.locator(".mx_Autocomplete_Completion_title", { hasText: ":regional_indicator_a:" }).click();
            await app.getComposerField().pressSequentially(":regional_indicator_r");
            await page.locator(".mx_Autocomplete_Completion_title", { hasText: ":regional_indicator_r:" }).click();
            await app.getComposerField().pressSequentially(" :regional_indicator_z");
            await page.locator(".mx_Autocomplete_Completion_title", { hasText: ":regional_indicator_z:" }).click();
            await app.getComposerField().pressSequentially(":regional_indicator_a");
            await page.locator(".mx_Autocomplete_Completion_title", { hasText: ":regional_indicator_a:" }).click();
            await app.getComposerField().press("Enter");

            await expect(
                page.locator(
                    ".mx_RoomView_body .mx_EventTile .mx_EventTile_line .mx_MTextBody .mx_EventTile_bigEmoji > *",
                ),
            ).toHaveCount(4);
        });

        test("should display a reply chain", async ({ page, app, room, homeserver }) => {
            const reply2 = "Reply again";

            await page.goto(`/#/room/${room.roomId}`);

            // Wait until configuration is finished
            await expect(
                page
                    .locator(".mx_GenericEventListSummary_summary")
                    .getByText(OLD_NAME + " created and configured the room."),
            ).toBeVisible();

            // Create a bot "BotBob" and invite it
            const bot = new Bot(page, homeserver, {
                displayName: "BotBob",
                autoAcceptInvites: false,
            });
            await bot.prepareClient();
            await app.client.inviteUser(room.roomId, bot.credentials.userId);
            await bot.joinRoom(room.roomId);

            // Make sure the bot joined the room
            await expect(
                page
                    .locator(".mx_GenericEventListSummary .mx_EventTile_info.mx_EventTile_last")
                    .getByText("BotBob joined the room"),
            ).toBeVisible();

            // Have bot send MESSAGE to roomId
            await bot.sendMessage(room.roomId, MESSAGE);

            // Assert that MESSAGE is found
            await expect(page.getByText(MESSAGE)).toBeVisible();

            // Reply to the message
            await clickButtonReply(page);
            await app.getComposerField().fill(reply);
            await app.getComposerField().press("Enter");

            // Make sure 'reply' was sent
            await expect(page.locator(".mx_RoomView_body .mx_EventTile_last").getByText(reply)).toBeVisible();

            // Reply again to create a replyChain
            await clickButtonReply(page);
            await app.getComposerField().fill(reply2);
            await app.getComposerField().press("Enter");

            // Assert that 'reply2' was sent
            await expect(page.locator(".mx_RoomView_body .mx_EventTile_last").getByText(reply2)).toBeVisible();

            await expect(page.locator(".mx_EventTile_last .mx_EventTile_receiptSent")).toBeVisible();

            // Exclude timestamp and read marker from snapshot
            const screenshotOptions = {
                mask: [page.locator(".mx_MessageTimestamp")],
                css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
            };

            // Check the margin value of ReplyChains of EventTile at the bottom on IRC layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);
            for (const locator of await page.locator(".mx_EventTile_last[data-layout='irc'] .mx_ReplyChain").all()) {
                await expect(locator).toHaveCSS("margin", "0px");
            }

            // Take a snapshot on IRC layout
            // Note that because zero margin is applied to mx_ReplyChain, the left borders of two mx_ReplyChain
            // components may seem to be connected to one.
            await expect(page.locator(".mx_EventTile_last")).toMatchScreenshot(
                "event-tile-reply-chains-irc-layout.png",
                screenshotOptions,
            );

            // Check the margin value of ReplyChains of EventTile at the bottom on group/modern layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Group);
            for (const locator of await page.locator(".mx_EventTile_last[data-layout='group'] .mx_ReplyChain").all()) {
                await expect(locator).toHaveCSS("margin-bottom", "8px");
            }

            // Take a snapshot on modern layout
            await expect(page.locator(".mx_EventTile_last")).toMatchScreenshot(
                "event-tile-reply-chains-irc-modern.png",
                screenshotOptions,
            );

            // Check the margin value of ReplyChains of EventTile at the bottom on group/modern compact layout
            await app.settings.setValue("useCompactLayout", null, SettingLevel.DEVICE, true);
            for (const locator of await page.locator(".mx_EventTile_last[data-layout='group'] .mx_ReplyChain").all()) {
                await expect(locator).toHaveCSS("margin-bottom", "4px");
            }

            // Take a snapshot on compact modern layout
            await expect(page.locator(".mx_EventTile_last")).toMatchScreenshot(
                "event-tile-reply-chains-compact-modern-layout.png",
                screenshotOptions,
            );

            // Check the margin value of ReplyChains of EventTile at the bottom on bubble layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Bubble);
            for (const locator of await page.locator(".mx_EventTile_last[data-layout='bubble'] .mx_ReplyChain").all()) {
                await expect(locator).toHaveCSS("margin-bottom", "8px");
            }

            // Take a snapshot on bubble layout
            await expect(page.locator(".mx_EventTile_last")).toMatchScreenshot(
                "event-tile-reply-chains-bubble-layout.png",
                screenshotOptions,
            );
        });

        test("should send, reply, and display long strings without overflowing", async ({
            page,
            app,
            room,
            homeserver,
        }) => {
            // Max 256 characters for display name
            const LONG_STRING =
                "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut " +
                "et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut " +
                "aliquip";

            const newDisplayName = `${LONG_STRING} 2`;

            // Set the display name to "LONG_STRING 2" in order to avoid screenshot tests from failing
            // due to the generated random mxid being displayed inside the GELS summary.
            // Note that we set it here as the test was failing on CI (but not locally!) if the name
            // was changed afterwards. This is quite concerning, but maybe better than just disabling the
            // whole test?
            // https://github.com/element-hq/element-web/issues/27109
            await app.client.setDisplayName(newDisplayName);

            // Create a bot with a long display name
            const bot = new Bot(page, homeserver, {
                displayName: LONG_STRING,
                autoAcceptInvites: false,
            });
            await bot.prepareClient();

            // Create another room with a long name, invite the bot, and open the room
            const testRoomId = await app.client.createRoom({ name: LONG_STRING });
            await app.client.inviteUser(testRoomId, bot.credentials.userId);
            await bot.joinRoom(testRoomId);
            await page.goto(`/#/room/${testRoomId}`);

            // Wait until configuration is finished
            await expect(
                page
                    .locator(".mx_GenericEventListSummary_summary")
                    .getByText(newDisplayName + " created and configured the room."),
            ).toBeVisible();

            // Have the bot send a long message
            await bot.sendMessage(testRoomId, {
                body: LONG_STRING,
                msgtype: "m.text",
            });

            // Wait until the message is rendered
            await expect(
                page.locator(".mx_EventTile_last .mx_MTextBody .mx_EventTile_body").getByText(LONG_STRING),
            ).toBeVisible();

            // Reply to the message
            await clickButtonReply(page);
            await app.getComposerField().fill(reply);
            await app.getComposerField().press("Enter");

            // Make sure the reply tile is rendered
            const eventTileLine = page.locator(".mx_EventTile_last .mx_EventTile_line");
            await expect(eventTileLine.locator(".mx_ReplyTile .mx_MTextBody").getByText(LONG_STRING)).toBeVisible();

            await expect(eventTileLine.getByText(reply)).toHaveCount(1);

            // Change the viewport size
            await page.setViewportSize({ width: 1600, height: 1200 });

            // Exclude timestamp and read marker from snapshot
            const screenshotOptions = {
                mask: [page.locator(".mx_MessageTimestamp")],
                css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
            };

            // Make sure the strings do not overflow on IRC layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.IRC);
            // Scroll to the bottom to take a snapshot of the whole viewport
            await app.timeline.scrollToBottom();
            // Assert that both avatar in the introduction and the last message are visible at the same time
            await expect(page.locator(".mx_NewRoomIntro .mx_BaseAvatar")).toBeVisible();
            const lastEventTileIrc = page.locator(".mx_EventTile_last[data-layout='irc']");
            await expect(lastEventTileIrc.locator(".mx_MTextBody").first()).toBeVisible();
            await expect(lastEventTileIrc.locator(".mx_EventTile_receiptSent")).toBeVisible(); // rendered at the bottom of EventTile
            // Take a snapshot in IRC layout
            await expect(page.locator(".mx_ScrollPanel")).toMatchScreenshot(
                "long-strings-with-reply-irc-layout.png",
                screenshotOptions,
            );

            // Make sure the strings do not overflow on modern layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Group);
            await app.timeline.scrollToBottom(); // Scroll again in case
            await expect(page.locator(".mx_NewRoomIntro .mx_BaseAvatar")).toBeVisible();
            const lastEventTileGroup = page.locator(".mx_EventTile_last[data-layout='group']");
            await expect(lastEventTileGroup.locator(".mx_MTextBody").first()).toBeVisible();
            await expect(lastEventTileGroup.locator(".mx_EventTile_receiptSent")).toBeVisible();
            await expect(page.locator(".mx_ScrollPanel")).toMatchScreenshot(
                "long-strings-with-reply-modern-layout.png",
                screenshotOptions,
            );

            // Make sure the strings do not overflow on bubble layout
            await app.settings.setValue("layout", null, SettingLevel.DEVICE, Layout.Bubble);
            await app.timeline.scrollToBottom(); // Scroll again in case
            await expect(page.locator(".mx_NewRoomIntro .mx_BaseAvatar")).toBeVisible();
            const lastEventTileBubble = page.locator(".mx_EventTile_last[data-layout='bubble']");
            await expect(lastEventTileBubble.locator(".mx_MTextBody").first()).toBeVisible();
            await expect(lastEventTileBubble.locator(".mx_EventTile_receiptSent")).toBeVisible();
            await expect(page.locator(".mx_ScrollPanel")).toMatchScreenshot(
                "long-strings-with-reply-bubble-layout.png",
                screenshotOptions,
            );
        });

        async function testImageRendering(page: Page, app: ElementAppPage, room: { roomId: string }) {
            await app.viewRoomById(room.roomId);

            // Reinstall the service workers to clear their implicit caches (global-level stuff)
            await page.evaluate(async () => {
                const registrations = await window.navigator.serviceWorker.getRegistrations();
                registrations.forEach((r) => r.update());
            });

            await sendImage(app.client, room.roomId, NEW_AVATAR);
            await expect(page.locator(".mx_MImageBody").first()).toBeVisible();

            // Exclude timestamp and read marker from snapshot
            const screenshotOptions = {
                mask: [page.locator(".mx_MessageTimestamp")],
                css: `
                    .mx_TopUnreadMessagesBar, .mx_MessagePanel_myReadMarker {
                        display: none !important;
                    }
                `,
            };

            await expect(page.locator(".mx_ScrollPanel")).toMatchScreenshot(
                "image-in-timeline-default-layout.png",
                screenshotOptions,
            );
        }

        test("should render images in the timeline", async ({ page, app, room, context }) => {
            await testImageRendering(page, app, room);
        });

        // XXX: This test doesn't actually work because the service worker relies on IndexedDB, which Playwright forces
        // to be a localstorage implementation, which service workers cannot access.
        // See https://github.com/microsoft/playwright/issues/11164
        // See https://github.com/microsoft/playwright/issues/15684#issuecomment-2070862042
        //
        // In practice, this means this test will *always* succeed because it ends up relying on fallback behaviour tested
        // above (unless of course the above tests are also broken).
        test.describe("MSC3916 - Authenticated Media", () => {
            test("should render authenticated images in the timeline", async ({ page, app, room, context }) => {
                // Note: we have to use `context` instead of `page` for routing, otherwise we'll miss Service Worker events.
                // See https://playwright.dev/docs/service-workers-experimental#network-events-and-routing

                // Install our mocks and preventative measures
                await context.route("**/_matrix/client/versions", async (route) => {
                    // Force enable MSC3916/Matrix 1.11, which may require the service worker's internal cache to be cleared later.
                    const json = await (await route.fetch()).json();
                    if (!json["versions"]) json["versions"] = [];
                    json["versions"].push("v1.11");
                    await route.fulfill({ json });
                });
                await context.route("**/_matrix/media/*/download/**", async (route) => {
                    // should not be called. We don't use `abort` so that it's clearer in the logs what happened.
                    await route.fulfill({
                        status: 500,
                        json: { errcode: "M_UNKNOWN", error: "Unexpected route called." },
                    });
                });
                await context.route("**/_matrix/media/*/thumbnail/**", async (route) => {
                    // should not be called. We don't use `abort` so that it's clearer in the logs what happened.
                    await route.fulfill({
                        status: 500,
                        json: { errcode: "M_UNKNOWN", error: "Unexpected route called." },
                    });
                });
                await context.route("**/_matrix/client/v1/download/**", async (route) => {
                    expect(route.request().headers()["Authorization"]).toBeDefined();
                    // we can't use route.continue() because no configured homeserver supports MSC3916 yet
                    await route.fulfill({
                        body: NEW_AVATAR,
                    });
                });
                await context.route("**/_matrix/client/v1/thumbnail/**", async (route) => {
                    expect(route.request().headers()["Authorization"]).toBeDefined();
                    // we can't use route.continue() because no configured homeserver supports MSC3916 yet
                    await route.fulfill({
                        body: NEW_AVATAR,
                    });
                });

                // We check the same screenshot because there should be no user-visible impact to using authentication.
                await testImageRendering(page, app, room);
            });
        });
    });
});