Add voice broadcast pre-recoding PiP (#9548)

test/contexts/SdkContext-test.ts

@@ -0,0 +1,34 @@
+/*
+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 { SdkContextClass } from "../../src/contexts/SDKContext";
+import { VoiceBroadcastPreRecordingStore } from "../../src/voice-broadcast";
+
+jest.mock("../../src/voice-broadcast/stores/VoiceBroadcastPreRecordingStore");
+
+describe("SdkContextClass", () => {
+    const sdkContext = SdkContextClass.instance;
+
+    it("instance should always return the same instance", () => {
+        expect(SdkContextClass.instance).toBe(sdkContext);
+    });
+
+    it("voiceBroadcastPreRecordingStore should always return the same VoiceBroadcastPreRecordingStore", () => {
+        const first = sdkContext.voiceBroadcastPreRecordingStore;
+        expect(first).toBeInstanceOf(VoiceBroadcastPreRecordingStore);
+        expect(sdkContext.voiceBroadcastPreRecordingStore).toBe(first);
+    });
+});