Adding a simple placeholder test

server/rooms/game.test.ts

@@ -5,9 +5,17 @@ describe("Room", function () {
     let room: GameRoom = null;
 
     describe("onMessage / dispatchMessage", () => {
-        it("* should handle if message is not registered", () => {
+        it("should be able to create a GameRoom instance", () => {
             room = new GameRoom();
             expect(room).not.toBeNull();
+            expect(room).toHaveProperty('dispatcher');
+            expect(room).toHaveProperty('currentDealer');
+            expect(room).toHaveProperty('gameType');
         });
+
+        it("after creation getSeatedPlayers should return an empty array", () => {
+            room = new GameRoom();
+            expect(room.getSeatedPlayers()).toEqual([]);
+        })
     });
 });

server/rooms/game.ts

@@ -51,6 +51,9 @@ export class GameRoom extends Room<GameState> {
     }
 
     getSeatedPlayers(): Player[] {
+        if (this.state === undefined) {
+            return [];
+        }
         const players = Array.from<Player>(this.state.players.values());
         return players.filter((p) => { return (p.playing) });
     }