Add tests to make sure we always have one settings button.

src/button/Button.tsx

@@ -22,7 +22,7 @@ import {
 } from "@vector-im/compound-design-tokens/assets/web/icons";
 
 import styles from "./Button.module.css";
-import inCallViewStyles from "../components/InCallFooter.module.css";
+import inCallFooterStyles from "../components/InCallFooter.module.css";
 import { platform } from "../Platform";
 
 interface MicButtonProps extends ComponentPropsWithoutRef<"button"> {
@@ -177,9 +177,9 @@ export const SettingsButton: FC<SettingsButtonProps> = ({
     <Tooltip label={t("common.settings")}>
       <CpdButton
         className={classNames(className, {
-          [inCallViewStyles.settingsOnlyShowWide]:
+          [inCallFooterStyles.settingsOnlyShowWide]:
             showForScreenWidth === "wide",
-          [inCallViewStyles.settingsOnlyShowNarrow]:
+          [inCallFooterStyles.settingsOnlyShowNarrow]:
             showForScreenWidth === "narrow",
         })}
         iconOnly

src/components/InCallFooter.tsx

@@ -40,6 +40,7 @@ export interface InCallFooterProps {
   showControls: boolean;
   hideSettingsButton: boolean;
   hideLogo: boolean;
+  /** Pip controls buttonSize and hides: settings button, layout switcher and logo */
   asPip: boolean;
   gridMode: GridMode;
   setGridMode: (mode: GridMode) => void;

src/room/InCallView.test.tsx

@@ -17,7 +17,7 @@ import {
 import { render, type RenderResult } from "@testing-library/react";
 import { type LocalParticipant } from "livekit-client";
 import { BehaviorSubject, of } from "rxjs";
-import { BrowserRouter } from "react-router-dom";
+import { BrowserRouter, MemoryRouter } from "react-router-dom";
 import { TooltipProvider } from "@vector-im/compound-web";
 import { RoomContext, useLocalParticipant } from "@livekit/components-react";
 import userEvent from "@testing-library/user-event";
@@ -34,13 +34,17 @@ import {
 } from "../utils/test";
 import { E2eeType } from "../e2ee/e2eeType";
 import { getBasicCallViewModelEnvironment } from "../utils/test-viewmodel";
+import { type CallViewModelOptions } from "../state/CallViewModel/CallViewModel";
 import { alice, local } from "../utils/test-fixtures";
 import { ReactionsSenderProvider } from "../reactions/useReactionsSender";
 import { useRoomEncryptionSystem } from "../e2ee/sharedKeyManagement";
 import { LivekitRoomAudioRenderer } from "../livekit/MatrixAudioRenderer";
 import { MediaDevicesContext } from "../MediaDevicesContext";
 import { type MediaDevices as ECMediaDevices } from "../state/MediaDevices";
+import { constant } from "../state/Behavior";
+import { AppBar } from "../AppBar";
 import { initializeWidget } from "../widget";
+import inCallFooterStyles from "../components/InCallFooter.module.css";
 
 initializeWidget();
 vi.hoisted(
@@ -96,6 +100,11 @@ beforeEach(() => {
 });
 interface CreateInCallViewArgs {
   mediaDevices?: ECMediaDevices;
+  callViewModelOptions?: Partial<CallViewModelOptions>;
+  /** If set, uses a MemoryRouter with this as the initial entry instead of BrowserRouter */
+  initialRoute?: string;
+  /** If true, wraps the rendered tree in an AppBar provider */
+  withAppBar?: boolean;
 }
 function createInCallView(args: CreateInCallViewArgs = {}): RenderResult & {
   rtcSession: MockRTCSession;
@@ -112,47 +121,60 @@ function createInCallView(args: CreateInCallViewArgs = {}): RenderResult & {
   const { vm, rtcSession } = getBasicCallViewModelEnvironment(
     [local, alice],
     undefined,
-    {},
+    args.callViewModelOptions ?? {},
     args.mediaDevices,
   );
 
   rtcSession.joined = true;
   const room = rtcSession.room;
   const client = room.client;
+
+  const Router = args.initialRoute
+    ? ({ children }: { children: React.ReactNode }) => (
+        <MemoryRouter initialEntries={[args.initialRoute!]}>
+          {children}
+        </MemoryRouter>
+      )
+    : BrowserRouter;
+
+  const inCallView = (
+    <InCallView
+      client={client}
+      rtcSession={rtcSession.asMockedSession()}
+      muteStates={muteState}
+      vm={vm}
+      matrixInfo={{
+        userId: "",
+        displayName: "",
+        avatarUrl: "",
+        roomId: "",
+        roomName: "",
+        roomAlias: null,
+        roomAvatar: null,
+        e2eeSystem: {
+          kind: E2eeType.NONE,
+        },
+      }}
+      matrixRoom={room}
+      onShareClick={null}
+    />
+  );
+
+  const content = args.withAppBar ? <AppBar>{inCallView}</AppBar> : inCallView;
+
   const renderResult = render(
-    <BrowserRouter>
+    <Router>
       <MediaDevicesContext value={args.mediaDevices ?? mockMediaDevices({})}>
         <ReactionsSenderProvider
           vm={vm}
           rtcSession={rtcSession.asMockedSession()}
         >
           <TooltipProvider>
-            <RoomContext value={livekitRoom}>
-              <InCallView
-                client={client}
-                rtcSession={rtcSession.asMockedSession()}
-                muteStates={muteState}
-                vm={vm}
-                matrixInfo={{
-                  userId: "",
-                  displayName: "",
-                  avatarUrl: "",
-                  roomId: "",
-                  roomName: "",
-                  roomAlias: null,
-                  roomAvatar: null,
-                  e2eeSystem: {
-                    kind: E2eeType.NONE,
-                  },
-                }}
-                matrixRoom={room}
-                onShareClick={null}
-              />
-            </RoomContext>
+            <RoomContext value={livekitRoom}>{content}</RoomContext>
           </TooltipProvider>
         </ReactionsSenderProvider>
       </MediaDevicesContext>
-    </BrowserRouter>,
+    </Router>,
   );
   return {
     ...renderResult,
@@ -167,6 +189,53 @@ describe("InCallView", () => {
       expect(container).toMatchSnapshot();
     });
   });
+  describe("settings button with AppBar header", () => {
+    it("is accessible when showHeader is false", () => {
+      // windowSize with height <= 600 results in "flat" windowMode,
+      // which means showHeader$ emits false.
+      const { getAllByRole } = createInCallView({
+        initialRoute: "/?header=app_bar",
+        withAppBar: true,
+        callViewModelOptions: {
+          // Set windowMode$ to "flat" (height <= 600)
+          windowSize$: constant({ width: 1000, height: 500 }),
+        },
+      });
+      // When showHeader is false, hideSettingsButton is false,
+      // so the settings button is visible in the footer.
+      const settingsBtns = getAllByRole("button", { name: "Settings" });
+      expect(settingsBtns.length).toBe(2);
+      const [btnA, btnB] = settingsBtns;
+      // here we check for two settings buttons because there are two buttons in the bottom bar. One for the
+      // the narrow layout and another one for the wide layout.
+      // Their visibility uses @media css queries, which cannot be tested in JSDOM,
+      // but we can at least check that both buttons are rendered and have the correct classes.
+      expect(btnA).toBeInTheDocument();
+      expect(btnA).toHaveClass(inCallFooterStyles.settingsOnlyShowWide);
+      expect(btnB).toBeInTheDocument();
+      expect(btnB).toHaveClass(inCallFooterStyles.settingsOnlyShowNarrow);
+    });
+
+    it("is accessible when showHeader is true", () => {
+      // windowSize with height > 600 and width > 600 results in "normal" windowMode,
+      // which means showHeader$ emits true.
+      const { getAllByRole } = createInCallView({
+        initialRoute: "/?header=app_bar",
+        withAppBar: true,
+        callViewModelOptions: {
+          // Set windowMode$ to "normal" (height >= 600)
+          windowSize$: constant({ width: 1000, height: 800 }),
+        },
+      });
+      // When showHeader is true and headerStyle is AppBar,
+      // hideSettingsButton is true in the footer, but the settings
+      // button is rendered in the AppBar via useAppBarSecondaryButton.
+      const settingsBtns = getAllByRole("button", { name: "Settings" });
+      expect(settingsBtns.length).toBe(1);
+
+      expect(settingsBtns[0]).toBeVisible();
+    });
+  });
   describe("audioOutputSwitcher", () => {
     it("is visible and can be clicked", async () => {
       const user = userEvent.setup();

src/room/InCallView.tsx

@@ -360,7 +360,12 @@ export const InCallView: FC<InCallViewProps> = ({
   let header: ReactNode = null;
   if (showHeader) {
     switch (headerStyle) {
-      case "none":
+      case HeaderStyle.AppBar: {
+        // dont build a header here. The AppBar will take care of it.
+        header = null;
+        break;
+      }
+      case HeaderStyle.None:
         // Cosmetic header to fill out space while still affecting the bounds of
         // the grid
         header = (
@@ -370,7 +375,7 @@ export const InCallView: FC<InCallViewProps> = ({
           />
         );
         break;
-      case "standard":
+      case HeaderStyle.Standard:
         header = (
           <Header
             className={styles.header}
@@ -565,7 +570,8 @@ export const InCallView: FC<InCallViewProps> = ({
       showControls={showControls}
       // Hide the logo for both embedded solutions. mobile: HeaderStyle.AppBar and desktop: HeaderStyle.None.
       hideLogo={headerStyle !== HeaderStyle.Standard}
-      hideSettingsButton={headerStyle === HeaderStyle.AppBar}
+      // Only hide the settings button if we have an AppBar header and we are showing the header
+      hideSettingsButton={headerStyle === HeaderStyle.AppBar && showHeader}
       asPip={layout.type === "pip"}
       gridMode={gridMode}
       setGridMode={setGridMode}

src/room/__snapshots__/InCallView.test.tsx.snap

@@ -169,7 +169,7 @@ exports[`InCallView > rendering > renders 1`] = `
       >
         <button
           aria-labelledby="_r_8_"
-          class="_button_13vu4_8 settingForBottomLeftCorner _has-icon_13vu4_60 _icon-only_13vu4_53"
+          class="_button_13vu4_8 settingsOnlyShowWide _has-icon_13vu4_60 _icon-only_13vu4_53"
           data-kind="tertiary"
           data-size="lg"
           role="button"
@@ -298,7 +298,7 @@ exports[`InCallView > rendering > renders 1`] = `
       >
         <button
           aria-labelledby="_r_d_"
-          class="_button_13vu4_8 settingForButtonsBar _has-icon_13vu4_60 _icon-only_13vu4_53"
+          class="_button_13vu4_8 settingsOnlyShowNarrow _has-icon_13vu4_60 _icon-only_13vu4_53"
           data-kind="secondary"
           data-size="lg"
           role="button"