[Chromoting] Add SessionPlugin in JingleSession

remoting/protocol/jingle_session_unittest.cc

Index: remoting/protocol/jingle_session_unittest.cc
diff --git a/remoting/protocol/jingle_session_unittest.cc b/remoting/protocol/jingle_session_unittest.cc
index 64808e3ab88bda396505469bc05e8c5d281c74d2..b33a8f3856c2ccb6f4a13ab43f6b38136e9afda2 100644
--- a/remoting/protocol/jingle_session_unittest.cc
+++ b/remoting/protocol/jingle_session_unittest.cc
@@ -11,6 +11,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/test/test_timeouts.h"
 #include "base/time/time.h"
@@ -25,6 +26,7 @@
 #include "remoting/protocol/fake_authenticator.h"
 #include "remoting/protocol/jingle_session_manager.h"
 #include "remoting/protocol/network_settings.h"
+#include "remoting/protocol/session_plugin.h"
 #include "remoting/protocol/transport.h"
 #include "remoting/protocol/transport_context.h"
 #include "remoting/signaling/fake_signal_strategy.h"
@@ -101,6 +103,44 @@ class FakeTransport : public Transport {
   base::Closure on_message_callback_;
 };
 
+class FakePlugin : public SessionPlugin {
+ public:
+   std::unique_ptr<buzz::XmlElement> OnOutgoing(
+       Session::State state,
+       JingleMessage::ActionType action) override {
+     std::string tag_name = "test-tag-";
+     tag_name += base::IntToString(outgoing_messages_.size());
+     std::unique_ptr<buzz::XmlElement> new_message(new buzz::XmlElement(
+         buzz::QName("test-namespace", tag_name)));
+     outgoing_messages_.push_back(*new_message);
+     return new_message;
+  }
+
+  void OnIncoming(Session::State state,
+                  JingleMessage::ActionType action,
+                  const buzz::XmlElement* attachments) override {
+    if (attachments) {
+      for (const buzz::XmlElement* it = attachments->FirstElement();
+           it != nullptr;
+           it = it->NextElement()) {
+        incoming_messages_.push_back(*it);
+      }
+    }
+  }
+
+  const std::vector<buzz::XmlElement>& outgoing_messages() const {
+    return outgoing_messages_;
+  }
+
+  const std::vector<buzz::XmlElement>& incoming_messages() const {
+    return incoming_messages_;
+  }
+
+ private:
+  std::vector<buzz::XmlElement> outgoing_messages_;
+  std::vector<buzz::XmlElement> incoming_messages_;
+};
+
 std::unique_ptr<buzz::XmlElement> CreateTransportInfo(const std::string& id) {
   std::unique_ptr<buzz::XmlElement> result(
       buzz::XmlElement::ForStr("<transport xmlns='google:remoting:ice'/>"));
@@ -124,6 +164,9 @@ class JingleSessionTest : public testing::Test {
     host_session_.reset(session);
     host_session_->SetEventHandler(&host_session_event_handler_);
     host_session_->SetTransport(&host_transport_);
+    std::unique_ptr<FakePlugin> plugin(new FakePlugin());
+    host_plugin_ = plugin.get();
+    host_session_->AddPlugin(std::move(plugin));
   }
 
   void DeleteHostSession() { host_session_.reset(); }
@@ -237,6 +280,9 @@ class JingleSessionTest : public testing::Test {
         client_server_->Connect(host_jid_, std::move(authenticator));
     client_session_->SetEventHandler(&client_session_event_handler_);
     client_session_->SetTransport(&client_transport_);
+    std::unique_ptr<FakePlugin> plugin(new FakePlugin());
+    client_plugin_ = plugin.get();
+    client_session_->AddPlugin(std::move(plugin));
     base::RunLoop().RunUntilIdle();
   }
 
@@ -277,6 +323,9 @@ class JingleSessionTest : public testing::Test {
   std::unique_ptr<Session> client_session_;
   MockSessionEventHandler client_session_event_handler_;
   FakeTransport client_transport_;
+
+  FakePlugin* host_plugin_;
+  FakePlugin* client_plugin_;
 };
 
 
@@ -555,5 +604,24 @@ TEST_F(JingleSessionTest, TransportInfoDuringAuthentication) {
   EXPECT_EQ("1", client_transport_.received_messages()[0]->Attr(buzz::QN_ID));
 }
 
+TEST_F(JingleSessionTest, TestSessionPlugin) {
+  CreateSessionManagers(3, FakeAuthenticator::ACCEPT);
+  ASSERT_NO_FATAL_FAILURE(
+      InitiateConnection(3, FakeAuthenticator::ACCEPT, false));
+  ASSERT_EQ(client_plugin_->outgoing_messages().size(),
+            host_plugin_->incoming_messages().size());
+  for (size_t i = 0; i < client_plugin_->outgoing_messages().size(); i++) {
+    ASSERT_EQ(client_plugin_->outgoing_messages()[i].Str(),
+              host_plugin_->incoming_messages()[i].Str());
+  }
+
+  ASSERT_EQ(client_plugin_->incoming_messages().size(),
+            host_plugin_->outgoing_messages().size());
+  for (size_t i = 0; i < client_plugin_->incoming_messages().size(); i++) {
+    ASSERT_EQ(client_plugin_->incoming_messages()[i].Str(),
+              host_plugin_->outgoing_messages()[i].Str());
+  }
+}
+
 }  // namespace protocol
 }  // namespace remoting