Create network change notifier.

webrtc/base/network_unittest.cc

Index: webrtc/base/network_unittest.cc
diff --git a/webrtc/base/network_unittest.cc b/webrtc/base/network_unittest.cc
index 6d920e0a507a0fa25cea656025e81376fa2459cb..f2966dca19bea8375b2670e47580dd92b85ed667 100644
--- a/webrtc/base/network_unittest.cc
+++ b/webrtc/base/network_unittest.cc
@@ -10,6 +10,7 @@
 
 #include "webrtc/base/network.h"
 
+#include "webrtc/base/networkchangenotifier.h"
 #include <vector>
 #if defined(WEBRTC_POSIX)
 #include <sys/types.h>
@@ -790,4 +791,32 @@ TEST_F(NetworkTest, TestIPv6Selection) {
   EXPECT_EQ(ipv6_network.GetBestIP(), static_cast<IPAddress>(ip));
 }
 
+TEST_F(NetworkTest, TestNetworkChangeNotified) {
+  BasicNetworkManager manager;
+  manager.SignalNetworksChanged.connect(
+      static_cast<NetworkTest*>(this), &NetworkTest::OnNetworksChanged);
+  scoped_ptr<NetworkChangeNotifierFactory> factory(
+      NetworkChangeNotifierFactory::CreateFactory());
+  NetworkChangeNotifier::SetFactory(factory.get());
+  NetworkChangeNotifierDelegate* delegate = factory->CreateDelegate();
+  manager.StartUpdating();
+  Thread::Current()->ProcessMessages(0);
+  EXPECT_TRUE(callback_called_);
+  callback_called_ = false;
+
+  // Network manager is started, so the callback is called when the delegate
+  // fires the network-change event.
+  delegate->OnNetworkChangeNotified();
+  Thread::Current()->ProcessMessages(0);
+  EXPECT_TRUE(callback_called_);
+  callback_called_ = false;
+
+  // Network manager is stopped, so the callback is not called when the delegate
+  // fires the network-change event.
+  manager.StopUpdating();
+  delegate->OnNetworkChangeNotified();
+  Thread::Current()->ProcessMessages(1000);
+  EXPECT_FALSE(callback_called_);
+}
+
 }  // namespace rtc