如何对对等GameKit应用程序进行单元测试？

Question

我想用GameKit框架构建一个单元测试。 实际上我已经实现了一个创建两个线程的单元测试。 一个用于服务器，一个用于客户端。

这里是服务器线程主要方法的代码：

@implementation ServerThread

- (void)main {

  session = [[SessionManager alloc] initWithSessionId:@"TEST" 
                                          displayName:@"Server"
                                          sessionMode:GKSessionModeServer];
  session.delegate = self;

  running = YES;
  while (running) {
    NSLog(@"Server running");
    [NSThread sleepForTimeInterval:1.0];
  }

  [session release];
  session = nil;
}

相同的代码适用于客户端，但是sessionMode = GKSessionModeClient。

不幸的是，客户端永远不会连接到服务器！ 日志：

2011-03-21 19:48:04.630 otest[41695:2f03] Server ready, peerId=352270827
2011-03-21 19:48:04.631 otest[41695:2f03] Server running
2011-03-21 19:48:04.651 otest[41695:2e07] Client ready, peerId=1781598997
2011-03-21 19:48:04.652 otest[41695:2e07] Client running
2011-03-21 19:48:05.633 otest[41695:2f03] Server running
2011-03-21 19:48:05.653 otest[41695:2e07] Client running
2011-03-21 19:48:06.633 otest[41695:2f03] Server running
2011-03-21 19:48:06.654 otest[41695:2e07] Client running
2011-03-21 19:48:07.634 otest[41695:2f03] Server running
2011-03-21 19:48:07.655 otest[41695:2e07] Client running
2011-03-21 19:48:08.635 otest[41695:2f03] Server running
2011-03-21 19:48:08.656 otest[41695:2e07] Client running

这里，单元测试方法：

- (void)test {

  serverThread = [[ServerThread alloc] init];
  clientThread = [[ClientThread alloc] init];
  [serverThread start];
  [clientThread start];   

  // The main thread must wait the end
  while ([serverThread isExecuting] || [clientThread isExecuting]) {
    [NSThread sleepForTimeInterval:1.0];  
  }

  [clientThread release];
  clientThread = nil;
  [serverThread release];
  serverThread = nil;
}

这里是SessionManager初始化程序：

- (id)initWithSessionId:(NSString *)aSessionId
            displayName:(NSString *)aDisplayName
            sessionMode:(GKSessionMode)aSessionMode {

  if ((self = [super init])) {
    peers = [[NSMutableArray alloc] init];

    // Peers need to have the same sessionID set on their GKSession to see each other.
    sessionId = [aSessionId retain];
    displayName = [aDisplayName retain];
    sessionMode = aSessionMode;

    gkSession = [[GKSession alloc] initWithSessionID:sessionId
                                         displayName:displayName
                                         sessionMode:sessionMode];
    gkSession.delegate = self; 
    [gkSession setDataReceiveHandler:self
                         withContext:nil]; 
    gkSession.available = YES;

    switch (sessionMode) {
      case GKSessionModeServer:
        NSLog(@"Server ready, peerId=%@", gkSession.peerID);
      break;
      case GKSessionModeClient:
        NSLog(@"Client ready, peerId=%@", gkSession.peerID);
      break;
      case GKSessionModePeer:
        NSLog(@"Peer ready, peerId=%@", gkSession.peerID);
      break;
    }
  }
  return self;
}

GKSession的委托'didChangeState'方法永远不会在服务器上和客户端上调用。