Get tests working on systems that only support IPv6.

webrtc/p2p/client/basicportallocator_unittest.cc

 /*
  *  Copyright 2009 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.
  */
 
 #include <algorithm>
 #include <memory>
 
-#include "webrtc/p2p/base/basicpacketsocketfactory.h"
-#include "webrtc/p2p/base/p2pconstants.h"
-#include "webrtc/p2p/base/p2ptransportchannel.h"
-#include "webrtc/p2p/base/testrelayserver.h"
-#include "webrtc/p2p/base/teststunserver.h"
-#include "webrtc/p2p/base/testturnserver.h"
-#include "webrtc/p2p/client/basicportallocator.h"
 #include "webrtc/base/fakeclock.h"
 #include "webrtc/base/fakenetwork.h"
 #include "webrtc/base/firewallsocketserver.h"
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/helpers.h"
 #include "webrtc/base/ipaddress.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/natserver.h"
 #include "webrtc/base/natsocketfactory.h"
+#include "webrtc/base/nethelpers.h"
 #include "webrtc/base/network.h"
 #include "webrtc/base/physicalsocketserver.h"
 #include "webrtc/base/socketaddress.h"
 #include "webrtc/base/ssladapter.h"
 #include "webrtc/base/thread.h"
 #include "webrtc/base/virtualsocketserver.h"
+#include "webrtc/p2p/base/basicpacketsocketfactory.h"
+#include "webrtc/p2p/base/p2pconstants.h"
+#include "webrtc/p2p/base/p2ptransportchannel.h"
+#include "webrtc/p2p/base/testrelayserver.h"
+#include "webrtc/p2p/base/teststunserver.h"
+#include "webrtc/p2p/base/testturnserver.h"
+#include "webrtc/p2p/client/basicportallocator.h"
 
 using rtc::IPAddress;
 using rtc::SocketAddress;
 using rtc::Thread;
 
+#define MAYBE_SKIP_IPV4                    \
+  if (!rtc::HasIPv4Enabled()) {            \
+    LOG(LS_INFO) << "No IPv4... skipping"; \
+    return;                                \
+  }
+
 static const SocketAddress kAnyAddr("0.0.0.0", 0);
 static const SocketAddress kClientAddr("11.11.11.11", 0);
 static const SocketAddress kClientAddr2("22.22.22.22", 0);
 static const SocketAddress kLoopbackAddr("127.0.0.1", 0);
 static const SocketAddress kPrivateAddr("192.168.1.11", 0);
 static const SocketAddress kPrivateAddr2("192.168.1.12", 0);
 static const SocketAddress kClientIPv6Addr("2401:fa00:4:1000:be30:5bff:fee5:c3",
                                            0);
 static const SocketAddress kClientIPv6Addr2(
     "2401:fa00:4:2000:be30:5bff:fee5:c3",
@@ skipping 1465 matching lines @@
   TestEachInterfaceHasItsOwnTurnPorts();
 }
 
 // Testing DNS resolve for the TURN server, this will test AllocationSequence
 // handling the unresolved address signal from TurnPort.
 // TODO(pthatcher): Make this test work with SIMULATED_WAIT. It
 // appears that it doesn't currently because of the DNS look up not
 // using the fake clock.
 TEST_F(BasicPortAllocatorTestWithRealClock,
        TestSharedSocketWithServerAddressResolve) {
+  // This test relies on a real query for "localhost", so it won't work on an
+  // IPv6-only machine.
+  MAYBE_SKIP_IPV4;
   turn_server_.AddInternalSocket(rtc::SocketAddress("127.0.0.1", 3478),
                                  PROTO_UDP);
   AddInterface(kClientAddr);
   allocator_.reset(new BasicPortAllocator(&network_manager_));
   RelayServerConfig turn_server(RELAY_TURN);
   RelayCredentials credentials(kTurnUsername, kTurnPassword);
   turn_server.credentials = credentials;
   turn_server.ports.push_back(
       ProtocolAddress(rtc::SocketAddress("localhost", 3478), PROTO_UDP));
   allocator_->AddTurnServer(turn_server);
@@ skipping 357 matching lines @@
   for (const Candidate& candidate : candidates) {
     // Expect only relay candidates now that the filter is applied.
     EXPECT_EQ(std::string(RELAY_PORT_TYPE), candidate.type());
     // Expect that the raddr is emptied due to the CF_RELAY filter.
     EXPECT_EQ(candidate.related_address(),
               rtc::EmptySocketAddressWithFamily(candidate.address().family()));
   }
 }
 
 }  // namespace cricket