Prepare for repo merge

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

test/unit-tests/utils/dm/findDMRoom-test.ts

@@ -0,0 +1,62 @@
+/*
+Copyright 2024 New Vector Ltd.
+Copyright 2022 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 { mocked } from "jest-mock";
+import { MatrixClient, Room } from "matrix-js-sdk/src/matrix";
+
+import { MatrixClientPeg } from "../../../src/MatrixClientPeg";
+import { DirectoryMember, ThreepidMember } from "../../../src/utils/direct-messages";
+import { findDMForUser } from "../../../src/utils/dm/findDMForUser";
+import { findDMRoom } from "../../../src/utils/dm/findDMRoom";
+import DMRoomMap from "../../../src/utils/DMRoomMap";
+import { createTestClient } from "../../test-utils";
+
+jest.mock("../../../src/utils/dm/findDMForUser", () => ({
+    findDMForUser: jest.fn(),
+}));
+
+describe("findDMRoom", () => {
+    const userId1 = "@user1:example.com";
+    const member1 = new DirectoryMember({ user_id: userId1 });
+    const member2 = new ThreepidMember("user2");
+    let mockClient: MatrixClient;
+    let room1: Room;
+    let dmRoomMap: DMRoomMap;
+
+    beforeEach(() => {
+        mockClient = createTestClient();
+        jest.spyOn(MatrixClientPeg, "get").mockReturnValue(mockClient);
+        room1 = new Room("!room1:example.com", mockClient, userId1);
+
+        dmRoomMap = {
+            getDMRoomForIdentifiers: jest.fn(),
+            getDMRoomsForUserId: jest.fn(),
+        } as unknown as DMRoomMap;
+        jest.spyOn(DMRoomMap, "shared").mockReturnValue(dmRoomMap);
+    });
+
+    it("should return the room for a single target with a room", () => {
+        mocked(findDMForUser).mockReturnValue(room1);
+        expect(findDMRoom(mockClient, [member1])).toBe(room1);
+    });
+
+    it("should return undefined for a single target without a room", () => {
+        mocked(findDMForUser).mockReturnValue(undefined);
+        expect(findDMRoom(mockClient, [member1])).toBeNull();
+    });
+
+    it("should return the room for 2 targets with a room", () => {
+        mocked(dmRoomMap.getDMRoomForIdentifiers).mockReturnValue(room1);
+        expect(findDMRoom(mockClient, [member1, member2])).toBe(room1);
+    });
+
+    it("should return null for 2 targets without a room", () => {
+        mocked(dmRoomMap.getDMRoomForIdentifiers).mockReturnValue(null);
+        expect(findDMRoom(mockClient, [member1, member2])).toBeNull();
+    });
+});