grace period disconnect should be per-client

lib/ClientManager.test.js

@@ -54,4 +54,37 @@ describe('ClientManager', () => {
         await new Promise(resolve => setTimeout(resolve, 1500));
         assert(!manager.hasClient('foobar'));
     }).timeout(5000);
+
+    it('should remove correct client once it goes offline', async () => {
+        const manager = new ClientManager();
+        const clientFoo = await manager.newClient('foo');
+        const clientBar = await manager.newClient('bar');
+
+        const socket = await new Promise((resolve) => {
+            const netClient = net.createConnection({ port: clientFoo.port }, () => {
+                resolve(netClient);
+            });
+        });
+
+        await new Promise(resolve => setTimeout(resolve, 1500));
+
+        // foo should still be ok
+        assert(manager.hasClient('foo'));
+
+        // clientBar shound be removed - nothing connected to it
+        assert(!manager.hasClient('bar'));
+
+        manager.removeClient('foo');
+        socket.end();
+    }).timeout(5000);
+
+    it('should remove clients if they do not connect within 5 seconds', async () => {
+        const manager = new ClientManager();
+        const clientFoo = await manager.newClient('foo');
+        assert(manager.hasClient('foo'));
+
+        // wait past grace period (1s)
+        await new Promise(resolve => setTimeout(resolve, 1500));
+        assert(!manager.hasClient('foo'));
+    }).timeout(5000);
 });