Open backdoor in VoiceEngineImpl to get at the actual voe::Channel objects from an ID.

webrtc/test/mock_voe_channel_proxy.h

+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_AUDIO_MOCK_VOE_CHANNEL_PROXY_H_
+#define WEBRTC_AUDIO_MOCK_VOE_CHANNEL_PROXY_H_
+
+#include "testing/gmock/include/gmock/gmock.h"
+#include "webrtc/voice_engine/channel_proxy.h"
+
+namespace webrtc {
+namespace test {
+
+class MockVoEChannelProxy : public voe::ChannelProxy {
+ public:
+  MockVoEChannelProxy() : voe::ChannelProxy() {}

[kwiberg-webrtc, 2015/11/25 10:44:59]

Do you need this? It looks like the default constructor the compiler would write
for you.

[the sun, 2015/11/25 12:28:01]

Done.

+  ~MockVoEChannelProxy() override {}

[kwiberg-webrtc, 2015/11/25 10:44:59]

Same here.

[the sun, 2015/11/25 12:28:01]

Done.

+
+  MOCK_METHOD1(SetRTCPStatus, void(bool enable));
+  MOCK_METHOD1(SetLocalSSRC, void(uint32_t ssrc));
+  MOCK_METHOD1(SetRTCP_CNAME, void(const std::string& c_name));
+};
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // WEBRTC_AUDIO_MOCK_VOE_CHANNEL_PROXY_H_