Implement broadcast message preview (#9762)

test/voice-broadcast/utils/textForVoiceBroadcastStoppedEventWithoutLink-test.ts

@@ -0,0 +1,55 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { mocked } from "jest-mock";
+import { MatrixClient } from "matrix-js-sdk/src/client";
+
+import { textForVoiceBroadcastStoppedEventWithoutLink, VoiceBroadcastInfoState } from "../../../src/voice-broadcast";
+import { stubClient } from "../../test-utils";
+import { mkVoiceBroadcastInfoStateEvent } from "./test-utils";
+
+describe("textForVoiceBroadcastStoppedEventWithoutLink", () => {
+    const otherUserId = "@other:example.com";
+    const roomId = "!room:example.com";
+    let client: MatrixClient;
+
+    beforeAll(() => {
+        client = stubClient();
+    });
+
+    const getText = (senderId: string, startEventId?: string) => {
+        const event = mkVoiceBroadcastInfoStateEvent(
+            roomId,
+            VoiceBroadcastInfoState.Stopped,
+            senderId,
+            client.deviceId!,
+        );
+        return textForVoiceBroadcastStoppedEventWithoutLink(event);
+    };
+
+    it("when called for an own broadcast it should return the expected text", () => {
+        expect(getText(client.getUserId()!)).toBe("You ended a voice broadcast");
+    });
+
+    it("when called for other ones broadcast it should return the expected text", () => {
+        expect(getText(otherUserId)).toBe(`${otherUserId} ended a voice broadcast`);
+    });
+
+    it("when not logged in it should return the exptected text", () => {
+        mocked(client.getUserId).mockReturnValue(null);
+        expect(getText(otherUserId)).toBe(`${otherUserId} ended a voice broadcast`);
+    });
+});