Extract voice broadcast header (#9393)

test/voice-broadcast/components/atoms/VoiceBroadcastHeader-test.tsx

@@ -0,0 +1,60 @@
+/*
+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 React from "react";
+import { Container } from "react-dom";
+import { RoomMember } from "matrix-js-sdk/src/matrix";
+import { render, RenderResult } from "@testing-library/react";
+
+import { VoiceBroadcastHeader } from "../../../../src/voice-broadcast";
+
+describe("VoiceBroadcastHeader", () => {
+    const userId = "@user:example.com";
+    const roomId = "!room:example.com";
+    const roomName = "test room";
+    const sender = new RoomMember(roomId, userId);
+    let container: Container;
+
+    const renderHeader = (live: boolean, showBroadcast: boolean = undefined): RenderResult => {
+        return render(<VoiceBroadcastHeader
+            live={live}
+            sender={sender}
+            roomName={roomName}
+            showBroadcast={showBroadcast}
+        />);
+    };
+
+    beforeAll(() => {
+        sender.name = "test user";
+    });
+
+    describe("when rendering a live broadcast header with broadcast info", () => {
+        beforeEach(() => {
+            container = renderHeader(true, true).container;
+        });
+
+        it("should render the header with a live badge", () => {
+            expect(container).toMatchSnapshot();
+        });
+    });
+
+    describe("when rendering a non-live broadcast header", () => {
+        beforeEach(() => {
+            container = renderHeader(false).container;
+        });
+
+        it("should render the header without a live badge", () => {
+            expect(container).toMatchSnapshot();
+        });
+    });
+});