talk/app/webrtc/objctests/RTCPeerConnectionSyncObserver.h

/*
 * libjingle
 * Copyright 2013 Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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#import <Foundation/Foundation.h>

#import "RTCDataChannel.h"
#import "RTCPeerConnectionDelegate.h"

// Observer of PeerConnection events, used by RTCPeerConnectionTest to check
// expectations.
@interface RTCPeerConnectionSyncObserver
    : NSObject<RTCPeerConnectionDelegate, RTCDataChannelDelegate>
@property(nonatomic) RTCDataChannel* dataChannel;
// TODO(hughv): Add support for RTCVideoRendererDelegate when Video is enabled.

// Transfer received ICE candidates to the caller.
- (NSArray*)releaseReceivedICECandidates;

// Register expectations for events that this observer should see before it can
// be considered satisfied (see below).
- (void)expectError;
- (void)expectSignalingChange:(RTCSignalingState)state;
- (void)expectAddStream:(NSString *)label;
- (void)expectRemoveStream:(NSString *)label;
- (void)expectICECandidates:(int)count;
- (void)expectICEConnectionChange:(RTCICEConnectionState)state;
- (void)expectICEGatheringChange:(RTCICEGatheringState)state;
- (void)expectDataChannel:(NSString*)label;
- (void)expectStateChange:(RTCDataChannelState)state;
- (void)expectMessage:(NSData*)message isBinary:(BOOL)isBinary;

// Wait until all registered expectations above have been observed.
// Return false if expectations aren't met within |timeoutSeconds|.
- (BOOL)waitForAllExpectationsToBeSatisfiedWithTimeout:(NSTimeInterval)timeout;

@end