WebRTC should generate default private address even when adapter enumeration is disabled.

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 436222127e6e08dd82767b3974f75c9bbd94cc18..00f8fec723ec82597184c8d75f72ebead645472a 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/nethelpers.h"
 #include "webrtc/base/networkmonitor.h"
 #include <vector>
 #if defined(WEBRTC_POSIX)
@@ -96,6 +97,11 @@ class NetworkTest : public testing::Test, public sigslot::has_slots<>  {
   bool callback_called_;
 };
 
+class TestBasicNetworkManager : public BasicNetworkManager {
+ public:
+  using BasicNetworkManager::QueryDefaultAddress;
+};
+
 // Test that the Network ctor works properly.
 TEST_F(NetworkTest, TestNetworkConstruct) {
   Network ipv4_network1("test_eth0", "Test Network Adapter 1",
@@ -842,4 +848,19 @@ TEST_F(NetworkTest, TestNetworkMonitoring) {
   NetworkMonitorFactory::ReleaseFactory(factory);
 }
 
+TEST_F(NetworkTest, DefaultPrivateAddress) {
+  TestBasicNetworkManager manager;
+  manager.StartUpdating();
+  std::vector<Network*> networks;
+  manager.GetNetworks(&networks);
+  for (auto& network : networks) {
+    if (network->GetBestIP().family() == AF_INET) {
+      EXPECT_TRUE(manager.QueryDefaultAddress(AF_INET) != IPAddress());
+    } else if (network->GetBestIP().family() == AF_INET6) {
+      EXPECT_TRUE(manager.QueryDefaultAddress(AF_INET6) != IPAddress());
+    }
+  }
+  manager.StopUpdating();
+}
+
 }  // namespace rtc