// Copyright 2009 Google Inc.
// All Rights Reserved.
//


#include <vector>
#include "talk/base/gunit.h"
#include "talk/base/network.h"

namespace talk_base {

// A network that should not be ignored.
static const Network kNetwork1("test1", "Test Network Adapter 1",
                               0x12345678, 0x12345601);
// A network that should be ignored (IP is 0.1.0.4).
static const Network kNetwork2("test2", "Test Network Adapter 2",
                               0x00010004, 0x01000000);
// A network that should not be ignored (IP is valid, but gateway is 0.0.0.1).
// Previously, we attempted to ignore networks with no default gateway,
// but if an explicit route is set, no default gateway is needed.
static const Network kNetwork3("test3", "Test Network Adapter 3",
                               0x55667788, 0x01000000);

class NetworkTest : public testing::Test, public sigslot::has_slots<>  {
 public:
  NetworkTest()
      : callback_called_(false) {
  }

  void OnNetworksChanged() {
    callback_called_ = true;
  }

  void MergeNetworkList(BasicNetworkManager& network_manager,
                        const NetworkManager::NetworkList& list,
                        bool force_notification) {
    network_manager.MergeNetworkList(list, force_notification);
  }

  bool IsIgnoredNetwork(const Network& network) {
    return BasicNetworkManager::IsIgnoredNetwork(network);
  }

 protected:
  bool callback_called_;
};

// Test that the Network ctor works properly.
TEST_F(NetworkTest, TestNetworkConstruct) {
  EXPECT_EQ("test1", kNetwork1.name());
  EXPECT_EQ("Test Network Adapter 1", kNetwork1.description());
  EXPECT_EQ(0x12345678U, kNetwork1.ip());
  EXPECT_EQ(0x12345601U, kNetwork1.gateway_ip());
  EXPECT_FALSE(kNetwork1.ignored());
}

// Tests that our ignore function works properly.
TEST_F(NetworkTest, TestNetworkIgnore) {
  EXPECT_FALSE(IsIgnoredNetwork(kNetwork1));
  EXPECT_TRUE(IsIgnoredNetwork(kNetwork2));
  EXPECT_FALSE(IsIgnoredNetwork(kNetwork3));
}

// Test that UpdateNetworks succeeds.
TEST_F(NetworkTest, TestUpdateNetworks) {
  BasicNetworkManager manager;
  manager.SignalNetworksChanged.connect(
      static_cast<NetworkTest*>(this), &NetworkTest::OnNetworksChanged);
  manager.StartUpdating();
  Thread::Current()->ProcessMessages(0);
  EXPECT_TRUE(callback_called_);
}

// Verify that MergeNetworkList() merges network lists properly.
TEST_F(NetworkTest, TestMergeNetworkList) {
  BasicNetworkManager manager;
  manager.SignalNetworksChanged.connect(
      static_cast<NetworkTest*>(this), &NetworkTest::OnNetworksChanged);

  // Add kNetwork1 to the list of networks.
  NetworkManager::NetworkList list;
  list.push_back(new Network(kNetwork1));
  callback_called_ = false;
  MergeNetworkList(manager, list, false);
  EXPECT_TRUE(callback_called_);
  list.clear();

  manager.GetNetworks(&list);
  EXPECT_EQ(1U, list.size());
  EXPECT_EQ(kNetwork1.ToString(), list[0]->ToString());
  Network* net1 = list[0];
  list.clear();

  // Replace kNetwork1 with kNetwork2.
  list.push_back(new Network(kNetwork2));
  callback_called_ = false;
  MergeNetworkList(manager, list, false);
  EXPECT_TRUE(callback_called_);
  list.clear();

  manager.GetNetworks(&list);
  EXPECT_EQ(1U, list.size());
  EXPECT_EQ(kNetwork2.ToString(), list[0]->ToString());
  Network* net2 = list[0];
  list.clear();

  // Add Network2 back.
  list.push_back(new Network(kNetwork1));
  list.push_back(new Network(kNetwork2));
  callback_called_ = false;
  MergeNetworkList(manager, list, false);
  EXPECT_TRUE(callback_called_);
  list.clear();

  // Verify that we get previous instances of Network objects.
  manager.GetNetworks(&list);
  EXPECT_EQ(2U, list.size());
  EXPECT_TRUE((net1 == list[0] && net2 == list[1]) ||
              (net1 == list[1] && net2 == list[0]));
  list.clear();

  // Call MergeNetworkList() again and verify that we don't get update
  // notification.
  list.push_back(new Network(kNetwork2));
  list.push_back(new Network(kNetwork1));
  callback_called_ = false;
  MergeNetworkList(manager, list, false);
  EXPECT_FALSE(callback_called_);
  list.clear();

  // Verify that we get previous instances of Network objects.
  manager.GetNetworks(&list);
  EXPECT_EQ(2U, list.size());
  EXPECT_TRUE((net1 == list[0] && net2 == list[1]) ||
              (net1 == list[1] && net2 == list[0]));
  list.clear();
}

// Test that DumpNetworks works.
TEST_F(NetworkTest, TestDumpNetworks) {
  BasicNetworkManager::DumpNetworks(true);
}

}  // namespace talk_base