Show users in voice channels before joining

test.js

@@ -38,15 +38,23 @@ test('server HTTP and WebSocket signaling endpoints', async (t) => {
   const healthText = await resHealth.text();
   assert.strictEqual(healthText, 'ok');
 
+  // test /api/rooms initially empty
+  const resRoomsInit = await fetch(`http://127.0.0.1:${port}/api/rooms`);
+  assert.strictEqual(resRoomsInit.status, 200);
+  const roomsInit = await resRoomsInit.json();
+  assert.deepStrictEqual(roomsInit, {});
+
   // test WebSocket signaling /ws
   const { WebSocket } = require('ws');
   const ws = new WebSocket(`ws://127.0.0.1:${port}/ws?room=testroom&name=tester`);
 
+  const messages = [];
   const helloPromise = new Promise((resolve, reject) => {
     ws.on('message', (raw) => {
       try {
         const msg = JSON.parse(raw.toString());
-        resolve(msg);
+        messages.push(msg);
+        if (msg.type === 'hello') resolve(msg);
       } catch (err) {
         reject(err);
       }
@@ -55,10 +63,19 @@ test('server HTTP and WebSocket signaling endpoints', async (t) => {
   });
 
   const msg = await helloPromise;
-  ws.close();
   assert.strictEqual(msg.type, 'hello');
   assert.strictEqual(msg.room, 'testroom');
   assert.ok(msg.id, 'client id assigned');
+
+  // test /api/rooms while tester is connected
+  const resRoomsActive = await fetch(`http://127.0.0.1:${port}/api/rooms`);
+  assert.strictEqual(resRoomsActive.status, 200);
+  const roomsActive = await resRoomsActive.json();
+  assert.ok(roomsActive.testroom, 'testroom present in /api/rooms');
+  assert.strictEqual(roomsActive.testroom.length, 1);
+  assert.strictEqual(roomsActive.testroom[0].name, 'tester');
+
+  ws.close();
 });
 
 test('TURN credentials generation with TURN_SECRET', () => {