Add local notification settings capability (#2700)

spec/unit/local_notifications.spec.ts

@@ -0,0 +1,43 @@
+/*
+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 { LocalNotificationSettings } from "../../src/@types/local_notifications";
+import { LOCAL_NOTIFICATION_SETTINGS_PREFIX, MatrixClient } from "../../src/matrix";
+import { TestClient } from '../TestClient';
+
+let client: MatrixClient;
+
+describe("Local notification settings", () => {
+    beforeEach(() => {
+        client = (new TestClient(
+            "@alice:matrix.org", "123", undefined, undefined, undefined,
+        )).client;
+        client.setAccountData = jest.fn();
+    });
+
+    describe("Lets you set local notification settings", () => {
+        it("stores settings in account data", () => {
+            const deviceId = "device";
+            const settings: LocalNotificationSettings = { is_silenced: true };
+            client.setLocalNotificationSettings(deviceId, settings);
+
+            expect(client.setAccountData).toHaveBeenCalledWith(
+                `${LOCAL_NOTIFICATION_SETTINGS_PREFIX.name}.${deviceId}`,
+                settings,
+            );
+        });
+    });
+});