diff --git a/res/css/views/rooms/_NotificationBadge.pcss b/res/css/views/rooms/_NotificationBadge.pcss
index 6facab61f7..85895b097e 100644
--- a/res/css/views/rooms/_NotificationBadge.pcss
+++ b/res/css/views/rooms/_NotificationBadge.pcss
@@ -48,6 +48,12 @@ limitations under the License.
             border-radius: 6px;
         }
 
+        &.mx_NotificationBadge_knocked {
+            mask-image: url("$(res)/img/element-icons/ask-to-join.svg");
+            width: 12px;
+            height: 16px;
+        }
+
         &.mx_NotificationBadge_2char {
             width: $font-16px;
             height: $font-16px;
diff --git a/res/css/views/rooms/_RoomTile.pcss b/res/css/views/rooms/_RoomTile.pcss
index be7f8f7562..bf68e4035e 100644
--- a/res/css/views/rooms/_RoomTile.pcss
+++ b/res/css/views/rooms/_RoomTile.pcss
@@ -144,7 +144,7 @@ limitations under the License.
         mask-image: url("$(res)/img/element-icons/context-menu.svg");
     }
 
-    &:not(.mx_RoomTile_minimized) {
+    &:not(.mx_RoomTile_minimized, .mx_RoomTile_sticky) {
         &:hover,
         &:focus-within,
         &.mx_RoomTile_hasMenuOpen {
diff --git a/src/RoomNotifs.ts b/src/RoomNotifs.ts
index 8eeb0469e5..988a3a5c21 100644
--- a/src/RoomNotifs.ts
+++ b/src/RoomNotifs.ts
@@ -27,7 +27,7 @@ import type { IPushRule, Room, MatrixClient } from "matrix-js-sdk/src/matrix";
 import { NotificationColor } from "./stores/notifications/NotificationColor";
 import { getUnsentMessages } from "./components/structures/RoomStatusBar";
 import { doesRoomHaveUnreadMessages, doesRoomOrThreadHaveUnreadMessages } from "./Unread";
-import { EffectiveMembership, getEffectiveMembership } from "./utils/membership";
+import { EffectiveMembership, getEffectiveMembership, isKnockDenied } from "./utils/membership";
 import SettingsStore from "./settings/SettingsStore";
 
 export enum RoomNotifState {
@@ -240,6 +240,10 @@ export function determineUnreadState(
         return { symbol: "!", count: 1, color: NotificationColor.Red };
     }
 
+    if (SettingsStore.getValue("feature_ask_to_join") && isKnockDenied(room)) {
+        return { symbol: "!", count: 1, color: NotificationColor.Red };
+    }
+
     if (getRoomNotifsState(room.client, room.roomId) === RoomNotifState.Mute) {
         return { symbol: null, count: 0, color: NotificationColor.None };
     }
diff --git a/src/components/views/rooms/NotificationBadge.tsx b/src/components/views/rooms/NotificationBadge.tsx
index c6fe4e2ba1..7c094366f2 100644
--- a/src/components/views/rooms/NotificationBadge.tsx
+++ b/src/components/views/rooms/NotificationBadge.tsx
@@ -114,7 +114,7 @@ export default class NotificationBadge extends React.PureComponent<XOR<IProps, I
         /* eslint @typescript-eslint/no-unused-vars: ["error", { "ignoreRestSiblings": true }] */
         const { notification, showUnsentTooltip, forceCount, onClick, tabIndex } = this.props;
 
-        if (notification.isIdle) return null;
+        if (notification.isIdle && !notification.knocked) return null;
         if (forceCount) {
             if (!notification.hasUnreadCount) return null; // Can't render a badge
         }
@@ -131,6 +131,7 @@ export default class NotificationBadge extends React.PureComponent<XOR<IProps, I
             symbol: notification.symbol,
             count: notification.count,
             color: notification.color,
+            knocked: notification.knocked,
             onMouseOver: this.onMouseOver,
             onMouseLeave: this.onMouseLeave,
         };
diff --git a/src/components/views/rooms/NotificationBadge/StatelessNotificationBadge.tsx b/src/components/views/rooms/NotificationBadge/StatelessNotificationBadge.tsx
index 1055ee07b2..770c549cba 100644
--- a/src/components/views/rooms/NotificationBadge/StatelessNotificationBadge.tsx
+++ b/src/components/views/rooms/NotificationBadge/StatelessNotificationBadge.tsx
@@ -27,6 +27,7 @@ interface Props {
     symbol: string | null;
     count: number;
     color: NotificationColor;
+    knocked?: boolean;
     onMouseOver?: (ev: MouseEvent) => void;
     onMouseLeave?: (ev: MouseEvent) => void;
     children?: ReactNode;
@@ -45,12 +46,13 @@ export function StatelessNotificationBadge({
     symbol,
     count,
     color,
+    knocked,
     ...props
 }: XOR<Props, ClickableProps>): JSX.Element {
     const hideBold = useSettingValue("feature_hidebold");
 
     // Don't show a badge if we don't need to
-    if (color === NotificationColor.None || (hideBold && color == NotificationColor.Bold)) {
+    if ((color === NotificationColor.None || (hideBold && color == NotificationColor.Bold)) && !knocked) {
         return <></>;
     }
 
@@ -64,9 +66,10 @@ export function StatelessNotificationBadge({
 
     const classes = classNames({
         mx_NotificationBadge: true,
-        mx_NotificationBadge_visible: isEmptyBadge ? true : hasUnreadCount,
+        mx_NotificationBadge_visible: isEmptyBadge || knocked ? true : hasUnreadCount,
         mx_NotificationBadge_highlighted: color >= NotificationColor.Red,
-        mx_NotificationBadge_dot: isEmptyBadge,
+        mx_NotificationBadge_dot: isEmptyBadge && !knocked,
+        mx_NotificationBadge_knocked: knocked,
         mx_NotificationBadge_2char: symbol && symbol.length > 0 && symbol.length < 3,
         mx_NotificationBadge_3char: symbol && symbol.length > 2,
     });
diff --git a/src/components/views/rooms/RoomTile.tsx b/src/components/views/rooms/RoomTile.tsx
index 31e4ba269a..465a3d0a93 100644
--- a/src/components/views/rooms/RoomTile.tsx
+++ b/src/components/views/rooms/RoomTile.tsx
@@ -51,6 +51,8 @@ import { useHasRoomLiveVoiceBroadcast } from "../../../voice-broadcast";
 import { RoomTileSubtitle } from "./RoomTileSubtitle";
 import { shouldShowComponent } from "../../../customisations/helpers/UIComponents";
 import { UIComponent } from "../../../settings/UIFeature";
+import { isKnockDenied } from "../../../utils/membership";
+import SettingsStore from "../../../settings/SettingsStore";
 
 interface Props {
     room: Room;
@@ -120,7 +122,12 @@ export class RoomTile extends React.PureComponent<ClassProps, State> {
     };
 
     private get showContextMenu(): boolean {
-        return this.props.tag !== DefaultTagID.Invite && shouldShowComponent(UIComponent.RoomOptionsMenu);
+        return (
+            this.props.tag !== DefaultTagID.Invite &&
+            this.props.room.getMyMembership() !== "knock" &&
+            !isKnockDenied(this.props.room) &&
+            shouldShowComponent(UIComponent.RoomOptionsMenu)
+        );
     }
 
     private get showMessagePreview(): boolean {
@@ -378,6 +385,9 @@ export class RoomTile extends React.PureComponent<ClassProps, State> {
     public render(): React.ReactElement {
         const classes = classNames({
             mx_RoomTile: true,
+            mx_RoomTile_sticky:
+                SettingsStore.getValue("feature_ask_to_join") &&
+                (this.props.room.getMyMembership() === "knock" || isKnockDenied(this.props.room)),
             mx_RoomTile_selected: this.state.selected,
             mx_RoomTile_hasMenuOpen: !!(this.state.generalMenuPosition || this.state.notificationsMenuPosition),
             mx_RoomTile_minimized: this.props.isMinimized,
diff --git a/src/stores/notifications/NotificationState.ts b/src/stores/notifications/NotificationState.ts
index 63537eb610..6de2d6b853 100644
--- a/src/stores/notifications/NotificationState.ts
+++ b/src/stores/notifications/NotificationState.ts
@@ -25,6 +25,7 @@ export interface INotificationStateSnapshotParams {
     count: number;
     color: NotificationColor;
     muted: boolean;
+    knocked: boolean;
 }
 
 export enum NotificationStateEvents {
@@ -44,6 +45,7 @@ export abstract class NotificationState
     protected _count = 0;
     protected _color: NotificationColor = NotificationColor.None;
     protected _muted = false;
+    protected _knocked = false;
 
     private watcherReferences: string[] = [];
 
@@ -72,6 +74,10 @@ export abstract class NotificationState
         return this._muted;
     }
 
+    public get knocked(): boolean {
+        return this._knocked;
+    }
+
     public get isIdle(): boolean {
         return this.color <= NotificationColor.None;
     }
@@ -117,17 +123,31 @@ export class NotificationStateSnapshot {
     private readonly count: number;
     private readonly color: NotificationColor;
     private readonly muted: boolean;
+    private readonly knocked: boolean;
 
     public constructor(state: INotificationStateSnapshotParams) {
         this.symbol = state.symbol;
         this.count = state.count;
         this.color = state.color;
         this.muted = state.muted;
+        this.knocked = state.knocked;
     }
 
     public isDifferentFrom(other: INotificationStateSnapshotParams): boolean {
-        const before = { count: this.count, symbol: this.symbol, color: this.color, muted: this.muted };
-        const after = { count: other.count, symbol: other.symbol, color: other.color, muted: other.muted };
+        const before = {
+            count: this.count,
+            symbol: this.symbol,
+            color: this.color,
+            muted: this.muted,
+            knocked: this.knocked,
+        };
+        const after = {
+            count: other.count,
+            symbol: other.symbol,
+            color: other.color,
+            muted: other.muted,
+            knocked: other.knocked,
+        };
         return JSON.stringify(before) !== JSON.stringify(after);
     }
 }
diff --git a/src/stores/notifications/RoomNotificationState.ts b/src/stores/notifications/RoomNotificationState.ts
index 052aacc4ae..44b4931f90 100644
--- a/src/stores/notifications/RoomNotificationState.ts
+++ b/src/stores/notifications/RoomNotificationState.ts
@@ -22,6 +22,7 @@ import { MatrixClientPeg } from "../../MatrixClientPeg";
 import { readReceiptChangeIsFor } from "../../utils/read-receipts";
 import * as RoomNotifs from "../../RoomNotifs";
 import { NotificationState } from "./NotificationState";
+import SettingsStore from "../../settings/SettingsStore";
 
 export class RoomNotificationState extends NotificationState implements IDestroyable {
     public constructor(public readonly room: Room) {
@@ -92,10 +93,12 @@ export class RoomNotificationState extends NotificationState implements IDestroy
         const { color, symbol, count } = RoomNotifs.determineUnreadState(this.room);
         const muted =
             RoomNotifs.getRoomNotifsState(this.room.client, this.room.roomId) === RoomNotifs.RoomNotifState.Mute;
+        const knocked = SettingsStore.getValue("feature_ask_to_join") && this.room.getMyMembership() === "knock";
         this._color = color;
         this._symbol = symbol;
         this._count = count;
         this._muted = muted;
+        this._knocked = knocked;
 
         // finally, publish an update if needed
         this.emitIfUpdated(snapshot);
diff --git a/src/stores/room-list/RoomListStore.ts b/src/stores/room-list/RoomListStore.ts
index e35726b338..b6e65fada7 100644
--- a/src/stores/room-list/RoomListStore.ts
+++ b/src/stores/room-list/RoomListStore.ts
@@ -25,7 +25,7 @@ import defaultDispatcher, { MatrixDispatcher } from "../../dispatcher/dispatcher
 import { readReceiptChangeIsFor } from "../../utils/read-receipts";
 import { FILTER_CHANGED, IFilterCondition } from "./filters/IFilterCondition";
 import { Algorithm, LIST_UPDATED_EVENT } from "./algorithms/Algorithm";
-import { EffectiveMembership, getEffectiveMembership } from "../../utils/membership";
+import { EffectiveMembership, getEffectiveMembership, getEffectiveMembershipTag } from "../../utils/membership";
 import RoomListLayoutStore from "./RoomListLayoutStore";
 import { MarkedExecution } from "../../utils/MarkedExecution";
 import { AsyncStoreWithClient } from "../AsyncStoreWithClient";
@@ -308,7 +308,7 @@ export class RoomListStoreClass extends AsyncStoreWithClient<IState> implements
     public async onDispatchMyMembership(membershipPayload: any): Promise<void> {
         // TODO: Type out the dispatcher types so membershipPayload is not any
         const oldMembership = getEffectiveMembership(membershipPayload.oldMembership);
-        const newMembership = getEffectiveMembership(membershipPayload.membership);
+        const newMembership = getEffectiveMembershipTag(membershipPayload.room, membershipPayload.membership);
         if (oldMembership !== EffectiveMembership.Join && newMembership === EffectiveMembership.Join) {
             // If we're joining an upgraded room, we'll want to make sure we don't proliferate
             // the dead room in the list.
diff --git a/src/stores/room-list/algorithms/Algorithm.ts b/src/stores/room-list/algorithms/Algorithm.ts
index 3ae5fcfea3..cc81d36249 100644
--- a/src/stores/room-list/algorithms/Algorithm.ts
+++ b/src/stores/room-list/algorithms/Algorithm.ts
@@ -30,7 +30,12 @@ import {
     ListAlgorithm,
     SortAlgorithm,
 } from "./models";
-import { EffectiveMembership, getEffectiveMembership, splitRoomsByMembership } from "../../../utils/membership";
+import {
+    EffectiveMembership,
+    getEffectiveMembership,
+    getEffectiveMembershipTag,
+    splitRoomsByMembership,
+} from "../../../utils/membership";
 import { OrderingAlgorithm } from "./list-ordering/OrderingAlgorithm";
 import { getListAlgorithmInstance } from "./list-ordering";
 import { VisibilityProvider } from "../filters/VisibilityProvider";
@@ -543,8 +548,9 @@ export class Algorithm extends EventEmitter {
     public getTagsForRoom(room: Room): TagID[] {
         const tags: TagID[] = [];
 
-        const membership = getEffectiveMembership(room.getMyMembership());
-        if (!membership) return []; // peeked room has no tags
+        if (!getEffectiveMembership(room.getMyMembership())) return []; // peeked room has no tags
+
+        const membership = getEffectiveMembershipTag(room);
 
         if (membership === EffectiveMembership.Invite) {
             tags.push(DefaultTagID.Invite);
diff --git a/src/utils/membership.ts b/src/utils/membership.ts
index 2977062029..df012e442b 100644
--- a/src/utils/membership.ts
+++ b/src/utils/membership.ts
@@ -16,6 +16,9 @@ limitations under the License.
 
 import { Room, RoomMember, RoomState, RoomStateEvent, MatrixEvent, MatrixClient } from "matrix-js-sdk/src/matrix";
 
+import { MatrixClientPeg } from "../MatrixClientPeg";
+import SettingsStore from "../settings/SettingsStore";
+
 /**
  * Approximation of a membership status for a given room.
  */
@@ -55,7 +58,7 @@ export function splitRoomsByMembership(rooms: Room[]): MembershipSplit {
         const membership = room.getMyMembership();
         // Filter out falsey relationship as this will be peeked rooms
         if (!!membership) {
-            split[getEffectiveMembership(membership)].push(room);
+            split[getEffectiveMembershipTag(room)].push(room);
         }
     }
 
@@ -65,8 +68,7 @@ export function splitRoomsByMembership(rooms: Room[]): MembershipSplit {
 export function getEffectiveMembership(membership: string): EffectiveMembership {
     if (membership === "invite") {
         return EffectiveMembership.Invite;
-    } else if (membership === "join") {
-        // TODO: Include knocks? Update docs as needed in the enum. https://github.com/vector-im/element-web/issues/14237
+    } else if (membership === "join" || (SettingsStore.getValue("feature_ask_to_join") && membership === "knock")) {
         return EffectiveMembership.Join;
     } else {
         // Probably a leave, kick, or ban
@@ -74,6 +76,20 @@ export function getEffectiveMembership(membership: string): EffectiveMembership
     }
 }
 
+export function isKnockDenied(room: Room): boolean | undefined {
+    const memberId = MatrixClientPeg.get()?.getSafeUserId();
+    const member = memberId ? room.getMember(memberId) : null;
+    const previousMembership = member?.events.member?.getPrevContent().membership;
+
+    return member?.isKicked() && previousMembership === "knock";
+}
+
+export function getEffectiveMembershipTag(room: Room, membership?: string): EffectiveMembership {
+    return isKnockDenied(room)
+        ? EffectiveMembership.Join
+        : getEffectiveMembership(membership ?? room.getMyMembership());
+}
+
 export function isJoinedOrNearlyJoined(membership: string): boolean {
     const effective = getEffectiveMembership(membership);
     return effective === EffectiveMembership.Join || effective === EffectiveMembership.Invite;
diff --git a/test/RoomNotifs-test.ts b/test/RoomNotifs-test.ts
index 43ea09923c..3544e862c2 100644
--- a/test/RoomNotifs-test.ts
+++ b/test/RoomNotifs-test.ts
@@ -27,7 +27,7 @@ import {
 } from "matrix-js-sdk/src/matrix";
 
 import type { MatrixClient } from "matrix-js-sdk/src/matrix";
-import { mkEvent, mkRoom, muteRoom, stubClient, upsertRoomStateEvents } from "./test-utils";
+import { mkEvent, mkRoom, mkRoomMember, muteRoom, stubClient, upsertRoomStateEvents } from "./test-utils";
 import {
     getRoomNotifsState,
     RoomNotifState,
@@ -36,6 +36,7 @@ import {
 } from "../src/RoomNotifs";
 import { NotificationColor } from "../src/stores/notifications/NotificationColor";
 import SettingsStore from "../src/settings/SettingsStore";
+import { MatrixClientPeg } from "../src/MatrixClientPeg";
 
 describe("RoomNotifs test", () => {
     let client: jest.Mocked<MatrixClient>;
@@ -285,6 +286,21 @@ describe("RoomNotifs test", () => {
             expect(count).toBeGreaterThan(0);
         });
 
+        it("indicates the user knock has been denied", async () => {
+            jest.spyOn(SettingsStore, "getValue").mockImplementation((name) => {
+                return name === "feature_ask_to_join";
+            });
+            const roomMember = mkRoomMember(room.roomId, MatrixClientPeg.get()!.getSafeUserId(), "leave", true, {
+                membership: "knock",
+            });
+            jest.spyOn(room, "getMember").mockReturnValue(roomMember);
+            const { color, symbol, count } = determineUnreadState(room);
+
+            expect(symbol).toBe("!");
+            expect(color).toBe(NotificationColor.Red);
+            expect(count).toBeGreaterThan(0);
+        });
+
         it("shows nothing for muted channels", async () => {
             room.setUnreadNotificationCount(NotificationCountType.Highlight, 99);
             room.setUnreadNotificationCount(NotificationCountType.Total, 99);
diff --git a/test/components/views/rooms/NotificationBadge/StatelessNotificationBadge-test.tsx b/test/components/views/rooms/NotificationBadge/StatelessNotificationBadge-test.tsx
index 5eecff326f..c6d2b843e6 100644
--- a/test/components/views/rooms/NotificationBadge/StatelessNotificationBadge-test.tsx
+++ b/test/components/views/rooms/NotificationBadge/StatelessNotificationBadge-test.tsx
@@ -27,4 +27,12 @@ describe("StatelessNotificationBadge", () => {
         );
         expect(container.querySelector(".mx_NotificationBadge_highlighted")).not.toBe(null);
     });
+
+    it("has knock style", () => {
+        const { container } = render(
+            <StatelessNotificationBadge symbol="!" count={0} color={NotificationColor.Red} knocked={true} />,
+        );
+        expect(container.querySelector(".mx_NotificationBadge_dot")).not.toBeInTheDocument();
+        expect(container.querySelector(".mx_NotificationBadge_knocked")).toBeInTheDocument();
+    });
 });
diff --git a/test/components/views/rooms/RoomTile-test.tsx b/test/components/views/rooms/RoomTile-test.tsx
index d15618e36a..4e8e631195 100644
--- a/test/components/views/rooms/RoomTile-test.tsx
+++ b/test/components/views/rooms/RoomTile-test.tsx
@@ -54,6 +54,8 @@ import { SDKContext } from "../../../../src/contexts/SDKContext";
 import { shouldShowComponent } from "../../../../src/customisations/helpers/UIComponents";
 import { UIComponent } from "../../../../src/settings/UIFeature";
 import { MessagePreviewStore } from "../../../../src/stores/room-list/MessagePreviewStore";
+import { MatrixClientPeg } from "../../../../src/MatrixClientPeg";
+import SettingsStore from "../../../../src/settings/SettingsStore";
 
 jest.mock("../../../../src/customisations/helpers/UIComponents", () => ({
     shouldShowComponent: jest.fn(),
@@ -160,8 +162,9 @@ describe("RoomTile", () => {
     describe("when message previews are not enabled", () => {
         it("should render the room", () => {
             mocked(shouldShowComponent).mockReturnValue(true);
-            const renderResult = renderRoomTile();
-            expect(renderResult.container).toMatchSnapshot();
+            const { container } = renderRoomTile();
+            expect(container).toMatchSnapshot();
+            expect(container.querySelector(".mx_RoomTile_sticky")).not.toBeInTheDocument();
         });
 
         it("does not render the room options context menu when UIComponent customisations disable room options", () => {
@@ -178,6 +181,31 @@ describe("RoomTile", () => {
             expect(screen.queryByRole("button", { name: "Room options" })).toBeInTheDocument();
         });
 
+        it("does not render the room options context menu when knocked to the room", () => {
+            jest.spyOn(SettingsStore, "getValue").mockImplementation((name) => {
+                return name === "feature_ask_to_join";
+            });
+            mocked(shouldShowComponent).mockReturnValue(true);
+            jest.spyOn(room, "getMyMembership").mockReturnValue("knock");
+            const { container } = renderRoomTile();
+            expect(container.querySelector(".mx_RoomTile_sticky")).toBeInTheDocument();
+            expect(screen.queryByRole("button", { name: "Room options" })).not.toBeInTheDocument();
+        });
+
+        it("does not render the room options context menu when knock has been denied", () => {
+            jest.spyOn(SettingsStore, "getValue").mockImplementation((name) => {
+                return name === "feature_ask_to_join";
+            });
+            mocked(shouldShowComponent).mockReturnValue(true);
+            const roomMember = mkRoomMember(room.roomId, MatrixClientPeg.get()!.getSafeUserId(), "leave", true, {
+                membership: "knock",
+            });
+            jest.spyOn(room, "getMember").mockReturnValue(roomMember);
+            const { container } = renderRoomTile();
+            expect(container.querySelector(".mx_RoomTile_sticky")).toBeInTheDocument();
+            expect(screen.queryByRole("button", { name: "Room options" })).not.toBeInTheDocument();
+        });
+
         describe("when a call starts", () => {
             let call: MockedCall;
             let widget: Widget;
diff --git a/test/test-utils/test-utils.ts b/test/test-utils/test-utils.ts
index 35a926f7d3..47f3713364 100644
--- a/test/test-utils/test-utils.ts
+++ b/test/test-utils/test-utils.ts
@@ -464,14 +464,26 @@ export function mkMembership(
     return e;
 }
 
-export function mkRoomMember(roomId: string, userId: string, membership = "join"): RoomMember {
+export function mkRoomMember(
+    roomId: string,
+    userId: string,
+    membership = "join",
+    isKicked = false,
+    prevMemberContent: Partial<IContent> = {},
+): RoomMember {
     return {
         userId,
         membership,
         name: userId,
         rawDisplayName: userId,
         roomId,
-        events: {},
+        events: {
+            member: {
+                getSender: () => undefined,
+                getPrevContent: () => prevMemberContent,
+            },
+        },
+        isKicked: () => isKicked,
         getAvatarUrl: () => {},
         getMxcAvatarUrl: () => {},
         getDMInviter: () => {},
@@ -597,6 +609,8 @@ export function mkStubRoom(
             roomId: roomId,
             getAvatarUrl: () => "mxc://avatar.url/image.png",
             getMxcAvatarUrl: () => "mxc://avatar.url/image.png",
+            events: {},
+            isKicked: () => false,
         }),
         getMembers: jest.fn().mockReturnValue([]),
         getMembersWithMembership: jest.fn().mockReturnValue([]),
diff --git a/test/utils/membership-test.ts b/test/utils/membership-test.ts
index 67bf3d98f7..3561625573 100644
--- a/test/utils/membership-test.ts
+++ b/test/utils/membership-test.ts
@@ -17,8 +17,36 @@ limitations under the License.
 import { MatrixClient, MatrixEvent, Room, RoomMember, RoomState, RoomStateEvent } from "matrix-js-sdk/src/matrix";
 import { mocked } from "jest-mock";
 
-import { waitForMember } from "../../src/utils/membership";
-import { createTestClient } from "../test-utils";
+import { isKnockDenied, waitForMember } from "../../src/utils/membership";
+import { createTestClient, mkRoomMember, stubClient } from "../test-utils";
+
+describe("isKnockDenied", () => {
+    const userId = "alice";
+    let client: jest.Mocked<MatrixClient>;
+    let room: Room;
+
+    beforeEach(() => {
+        client = stubClient() as jest.Mocked<MatrixClient>;
+        room = new Room("!room-id:example.com", client, "@user:example.com");
+    });
+
+    it("checks that the user knock has been denied", () => {
+        const roomMember = mkRoomMember(room.roomId, userId, "leave", true, { membership: "knock" });
+        jest.spyOn(room, "getMember").mockReturnValue(roomMember);
+        expect(isKnockDenied(room)).toBe(true);
+    });
+
+    it.each([
+        { membership: "leave", isKicked: false, prevMembership: "invite" },
+        { membership: "leave", isKicked: true, prevMembership: "invite" },
+        { membership: "leave", isKicked: false, prevMembership: "join" },
+        { membership: "leave", isKicked: true, prevMembership: "join" },
+    ])("checks that the user knock has been not denied", ({ membership, isKicked, prevMembership }) => {
+        const roomMember = mkRoomMember(room.roomId, userId, membership, isKicked, { membership: prevMembership });
+        jest.spyOn(room, "getMember").mockReturnValue(roomMember);
+        expect(isKnockDenied(room)).toBe(false);
+    });
+});
 
 /* Shorter timeout, we've got tests to run */
 const timeout = 30;