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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "blimp/net/thread_pipe_manager.h"
#include "base/location.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop/message_loop.h"
#include "base/threading/sequenced_task_runner_handle.h"
#include "base/threading/thread.h"
#include "blimp/net/blimp_message_thread_pipe.h"
#include "blimp/net/browser_connection_handler.h"
#include "blimp/net/test_common.h"
#include "net/base/net_errors.h"
#include "net/base/test_completion_callback.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::_;
using testing::SaveArg;
namespace blimp {
namespace {
scoped_ptr<BlimpMessage> CreateMessage(BlimpMessage::Type type) {
scoped_ptr<BlimpMessage> output(new BlimpMessage);
output->set_type(type);
return output;
}
// A feature that registers itself with ThreadPipeManager.
class FakeFeature {
public:
FakeFeature(BlimpMessage::Type type, ThreadPipeManager* pipe_manager_) {
outgoing_message_processor_ =
pipe_manager_->RegisterFeature(type, &incoming_message_processor_);
}
~FakeFeature() {}
BlimpMessageProcessor* outgoing_message_processor() {
return outgoing_message_processor_.get();
}
MockBlimpMessageProcessor* incoming_message_processor() {
return &incoming_message_processor_;
}
private:
testing::StrictMock<MockBlimpMessageProcessor> incoming_message_processor_;
scoped_ptr<BlimpMessageProcessor> outgoing_message_processor_;
};
// A feature peer on |thread_| that forwards incoming messages to
// |message_processor|.
class FakeFeaturePeer : public BlimpMessageProcessor {
public:
FakeFeaturePeer(BlimpMessage::Type type,
BlimpMessageProcessor* message_processor,
const scoped_refptr<base::SequencedTaskRunner>& task_runner)
: type_(type),
message_processor_(message_processor),
task_runner_(task_runner) {}
~FakeFeaturePeer() override {}
private:
void ForwardMessage(scoped_ptr<BlimpMessage> message) {
DCHECK(task_runner_->RunsTasksOnCurrentThread());
message_processor_->ProcessMessage(std::move(message),
net::CompletionCallback());
}
// BlimpMessageProcessor implementation.
void ProcessMessage(scoped_ptr<BlimpMessage> message,
const net::CompletionCallback& callback) override {
DCHECK(task_runner_->RunsTasksOnCurrentThread());
ASSERT_EQ(type_, message->type());
base::MessageLoop::current()->PostTask(
FROM_HERE, base::Bind(&FakeFeaturePeer::ForwardMessage,
base::Unretained(this), base::Passed(&message)));
if (!callback.is_null())
callback.Run(net::OK);
}
BlimpMessage::Type type_;
BlimpMessageProcessor* message_processor_ = nullptr;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
};
// A browser connection handler that returns FakeFeaturePeer to allow it
// forwarding message back so that FakeFeature can check message it receives
// with one it just sent.
class FakeBrowserConnectionHandler : public BrowserConnectionHandler {
public:
FakeBrowserConnectionHandler(
const scoped_refptr<base::SequencedTaskRunner>& task_runner)
: task_runner_(task_runner) {}
scoped_ptr<BlimpMessageProcessor> RegisterFeature(
BlimpMessage::Type type,
BlimpMessageProcessor* incoming_processor) override {
DCHECK(task_runner_->RunsTasksOnCurrentThread());
return make_scoped_ptr(
new FakeFeaturePeer(type, incoming_processor, task_runner_));
}
private:
scoped_refptr<base::SequencedTaskRunner> task_runner_;
};
} // namespace
class ThreadPipeManagerTest : public testing::Test {
public:
ThreadPipeManagerTest() : thread_("IoThread") {}
~ThreadPipeManagerTest() override {}
void SetUp() override {
ASSERT_TRUE(thread_.Start());
connection_handler_ = make_scoped_ptr(
new FakeBrowserConnectionHandler(thread_.task_runner()));
pipe_manager_ = make_scoped_ptr(new ThreadPipeManager(
thread_.task_runner(), base::SequencedTaskRunnerHandle::Get(),
connection_handler_.get()));
input_feature_.reset(
new FakeFeature(BlimpMessage::INPUT, pipe_manager_.get()));
tab_control_feature_.reset(
new FakeFeature(BlimpMessage::TAB_CONTROL, pipe_manager_.get()));
}
void TearDown() override { SynchronizeWithThread(); }
// Synchronize with |thread_| to ensure that any pending work is done.
void SynchronizeWithThread() {
net::TestCompletionCallback cb;
thread_.task_runner()->PostTaskAndReply(FROM_HERE,
base::Bind(&base::DoNothing),
base::Bind(cb.callback(), net::OK));
ASSERT_EQ(net::OK, cb.WaitForResult());
}
protected:
base::MessageLoop message_loop_;
scoped_ptr<BrowserConnectionHandler> connection_handler_;
scoped_ptr<ThreadPipeManager> pipe_manager_;
base::Thread thread_;
scoped_ptr<FakeFeature> input_feature_;
scoped_ptr<FakeFeature> tab_control_feature_;
};
// Features send out message and receive the same message due to
// |FakeFeaturePeer| loops the message back on |thread_|.
TEST_F(ThreadPipeManagerTest, MessageSentIsReceived) {
scoped_ptr<BlimpMessage> input_message = CreateMessage(BlimpMessage::INPUT);
scoped_ptr<BlimpMessage> tab_control_message =
CreateMessage(BlimpMessage::TAB_CONTROL);
EXPECT_CALL(*(input_feature_->incoming_message_processor()),
MockableProcessMessage(EqualsProto(*input_message), _))
.RetiresOnSaturation();
EXPECT_CALL(*(tab_control_feature_->incoming_message_processor()),
MockableProcessMessage(EqualsProto(*tab_control_message), _))
.RetiresOnSaturation();
net::TestCompletionCallback cb1;
input_feature_->outgoing_message_processor()->ProcessMessage(
std::move(input_message), cb1.callback());
net::TestCompletionCallback cb2;
tab_control_feature_->outgoing_message_processor()->ProcessMessage(
std::move(tab_control_message), cb2.callback());
EXPECT_EQ(net::OK, cb1.WaitForResult());
EXPECT_EQ(net::OK, cb2.WaitForResult());
}
} // namespace blimp
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