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// Copyright 2015 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/blimp_message_checkpointer.h"
#include "base/memory/ref_counted.h"
#include "base/test/test_mock_time_task_runner.h"
#include "base/thread_task_runner_handle.h"
#include "blimp/common/create_blimp_message.h"
#include "blimp/net/blimp_message_checkpoint_observer.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 {
class MockCheckpointObserver : public BlimpMessageCheckpointObserver {
public:
MockCheckpointObserver() {}
~MockCheckpointObserver() override {}
MOCK_METHOD1(OnMessageCheckpoint, void(int64_t));
};
} // namespace
static scoped_ptr<BlimpMessage> CreateExpectedAckMessage(int64_t id) {
scoped_ptr<BlimpMessage> message = make_scoped_ptr(new BlimpMessage);
message->set_type(BlimpMessage::PROTOCOL_CONTROL);
ProtocolControlMessage* protocol_control =
message->mutable_protocol_control();
protocol_control->set_type(ProtocolControlMessage::CHECKPOINT_ACK);
CheckpointAckMessage* checkpoint_ack =
protocol_control->mutable_checkpoint_ack();
checkpoint_ack->set_checkpoint_id(id);
return message;
}
class BlimpMessageCheckpointerTest : public testing::Test {
public:
BlimpMessageCheckpointerTest()
: runner_(new base::TestMockTimeTaskRunner), runner_handle_(runner_) {}
~BlimpMessageCheckpointerTest() override {}
int64_t SimulateIncomingMessage() {
scoped_ptr<BlimpMessage> message(new BlimpMessage);
message->set_message_id(++message_id_);
message->set_type(BlimpMessage::INPUT);
checkpointer_->ProcessMessage(
std::move(message),
base::Bind(&BlimpMessageCheckpointerTest::IncomingCompletionCallback,
base::Unretained(this)));
return message_id_;
}
void SetUp() override {
checkpointer_ = make_scoped_ptr(new BlimpMessageCheckpointer(
&incoming_processor_, &outgoing_processor_, &checkpoint_observer_));
}
MOCK_METHOD1(IncomingCompletionCallback, void(int));
protected:
// Used to verify timing-specific behaviours.
scoped_refptr<base::TestMockTimeTaskRunner> runner_;
base::ThreadTaskRunnerHandle runner_handle_;
int64_t message_id_ = 0;
testing::StrictMock<MockBlimpMessageProcessor> incoming_processor_;
testing::StrictMock<MockBlimpMessageProcessor> outgoing_processor_;
testing::StrictMock<MockCheckpointObserver> checkpoint_observer_;
net::CompletionCallback captured_cb_;
scoped_ptr<BlimpMessageCheckpointer> checkpointer_;
};
TEST_F(BlimpMessageCheckpointerTest, CallbackPropagates) {
EXPECT_CALL(incoming_processor_, MockableProcessMessage(_, _))
.WillOnce(SaveArg<1>(&captured_cb_));
EXPECT_CALL(*this, IncomingCompletionCallback(_));
// Simulate an incoming message.
SimulateIncomingMessage();
// Verify TestCompletionCallback called on completion.
captured_cb_.Run(net::OK);
}
TEST_F(BlimpMessageCheckpointerTest, DeleteWhileProcessing) {
EXPECT_CALL(incoming_processor_, MockableProcessMessage(_, _))
.WillOnce(SaveArg<1>(&captured_cb_));
EXPECT_CALL(*this, IncomingCompletionCallback(_)).Times(0);
// Simulate an incoming message.
SimulateIncomingMessage();
// Delete the checkpointer, then simulate completion of processing.
// TestCompletionCallback should not fire, so no expectations.
checkpointer_ = nullptr;
captured_cb_.Run(net::OK);
}
TEST_F(BlimpMessageCheckpointerTest, SingleMessageAck) {
EXPECT_CALL(incoming_processor_, MockableProcessMessage(_, _))
.WillOnce(SaveArg<1>(&captured_cb_));
scoped_ptr<BlimpMessage> expected_ack = CreateExpectedAckMessage(1);
EXPECT_CALL(outgoing_processor_,
MockableProcessMessage(EqualsProto(*expected_ack), _));
EXPECT_CALL(*this, IncomingCompletionCallback(net::OK));
// Simulate an incoming message.
SimulateIncomingMessage();
// Fast-forward time to verify that an ACK message is sent.
captured_cb_.Run(net::OK);
runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
}
TEST_F(BlimpMessageCheckpointerTest, BatchMessageAck) {
EXPECT_CALL(incoming_processor_, MockableProcessMessage(_, _))
.Times(10)
.WillRepeatedly(SaveArg<1>(&captured_cb_));
scoped_ptr<BlimpMessage> expected_ack = CreateExpectedAckMessage(10);
EXPECT_CALL(outgoing_processor_,
MockableProcessMessage(EqualsProto(*expected_ack), _));
EXPECT_CALL(*this, IncomingCompletionCallback(net::OK)).Times(10);
// Simulate ten incoming messages.
for (int i = 0; i < 10; ++i) {
SimulateIncomingMessage();
captured_cb_.Run(net::OK);
}
// Fast-forward time to verify that only a single ACK message is sent.
runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
}
TEST_F(BlimpMessageCheckpointerTest, MultipleAcks) {
EXPECT_CALL(incoming_processor_, MockableProcessMessage(_, _))
.Times(2)
.WillRepeatedly(SaveArg<1>(&captured_cb_));
scoped_ptr<BlimpMessage> expected_ack1 = CreateExpectedAckMessage(1);
EXPECT_CALL(outgoing_processor_,
MockableProcessMessage(EqualsProto(*expected_ack1), _));
scoped_ptr<BlimpMessage> expected_ack2 = CreateExpectedAckMessage(2);
EXPECT_CALL(outgoing_processor_,
MockableProcessMessage(EqualsProto(*expected_ack2), _));
EXPECT_CALL(*this, IncomingCompletionCallback(net::OK)).Times(2);
// Simulate an incoming messages and fast-forward to get the ACK.
SimulateIncomingMessage();
captured_cb_.Run(net::OK);
runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
// And do it again to verify we get a fresh ACK.
SimulateIncomingMessage();
captured_cb_.Run(net::OK);
runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
}
TEST_F(BlimpMessageCheckpointerTest, IncomingAckMessage) {
EXPECT_CALL(*this, IncomingCompletionCallback(net::OK));
EXPECT_CALL(checkpoint_observer_, OnMessageCheckpoint(10));
// Simulate an incoming message.
scoped_ptr<BlimpMessage> ack_message = CreateCheckpointAckMessage(10);
checkpointer_->ProcessMessage(
std::move(ack_message),
base::Bind(&BlimpMessageCheckpointerTest::IncomingCompletionCallback,
base::Unretained(this)));
}
} // namespace blimp
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