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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 <stddef.h>
#include <string>
#include "base/callback_helpers.h"
#include "blimp/common/proto/blimp_message.pb.h"
#include "blimp/net/blimp_message_pump.h"
#include "blimp/net/common.h"
#include "blimp/net/connection_error_observer.h"
#include "blimp/net/test_common.h"
#include "net/base/completion_callback.h"
#include "net/base/io_buffer.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::DoAll;
using testing::InSequence;
using testing::NotNull;
using testing::Return;
using testing::SaveArg;
namespace blimp {
namespace {
class BlimpMessagePumpTest : public testing::Test {
public:
BlimpMessagePumpTest()
: message1_(new BlimpMessage), message2_(new BlimpMessage) {
message1_->set_type(BlimpMessage::INPUT);
message2_->set_type(BlimpMessage::TAB_CONTROL);
message_pump_.reset(new BlimpMessagePump(&reader_));
message_pump_->set_error_observer(&error_observer_);
}
~BlimpMessagePumpTest() override {}
void NullMessageProcessor() { message_pump_->SetMessageProcessor(nullptr); }
protected:
scoped_ptr<BlimpMessage> message1_;
scoped_ptr<BlimpMessage> message2_;
testing::StrictMock<MockPacketReader> reader_;
testing::StrictMock<MockConnectionErrorObserver> error_observer_;
testing::StrictMock<MockBlimpMessageProcessor> receiver_;
scoped_ptr<BlimpMessagePump> message_pump_;
};
// Reader completes reading one packet asynchronously.
TEST_F(BlimpMessagePumpTest, ReadPacket) {
net::CompletionCallback read_packet_cb;
EXPECT_CALL(reader_, ReadPacket(NotNull(), _));
EXPECT_CALL(reader_, ReadPacket(NotNull(), _))
.WillOnce(DoAll(FillBufferFromMessage<0>(message1_.get()),
SaveArg<1>(&read_packet_cb)))
.RetiresOnSaturation();
net::CompletionCallback process_msg_cb;
EXPECT_CALL(receiver_, MockableProcessMessage(EqualsProto(*message1_), _))
.WillOnce(SaveArg<1>(&process_msg_cb));
message_pump_->SetMessageProcessor(&receiver_);
ASSERT_FALSE(read_packet_cb.is_null());
base::ResetAndReturn(&read_packet_cb).Run(message1_->ByteSize());
process_msg_cb.Run(net::OK);
}
// Reader completes reading two packets asynchronously.
TEST_F(BlimpMessagePumpTest, ReadTwoPackets) {
net::CompletionCallback read_packet_cb;
EXPECT_CALL(reader_, ReadPacket(NotNull(), _))
.WillOnce(DoAll(FillBufferFromMessage<0>(message1_.get()),
SaveArg<1>(&read_packet_cb)))
.WillOnce(DoAll(FillBufferFromMessage<0>(message2_.get()),
SaveArg<1>(&read_packet_cb)));
net::CompletionCallback process_msg_cb;
{
InSequence s;
EXPECT_CALL(receiver_, MockableProcessMessage(EqualsProto(*message1_), _))
.WillOnce(SaveArg<1>(&process_msg_cb))
.RetiresOnSaturation();
EXPECT_CALL(receiver_, MockableProcessMessage(EqualsProto(*message2_), _));
}
message_pump_->SetMessageProcessor(&receiver_);
ASSERT_FALSE(read_packet_cb.is_null());
base::ResetAndReturn(&read_packet_cb).Run(message1_->ByteSize());
// Trigger next packet read
process_msg_cb.Run(net::OK);
ASSERT_FALSE(read_packet_cb.is_null());
base::ResetAndReturn(&read_packet_cb).Run(message2_->ByteSize());
}
// Reader completes reading two packets asynchronously.
// The first read succeeds, and the second fails.
TEST_F(BlimpMessagePumpTest, ReadTwoPacketsWithError) {
net::CompletionCallback process_msg_cb;
net::CompletionCallback read_packet_cb;
EXPECT_CALL(reader_, ReadPacket(NotNull(), _))
.WillOnce(DoAll(FillBufferFromMessage<0>(message1_.get()),
SaveArg<1>(&read_packet_cb)))
.WillOnce(DoAll(FillBufferFromMessage<0>(message2_.get()),
SaveArg<1>(&read_packet_cb)));
EXPECT_CALL(receiver_, MockableProcessMessage(EqualsProto(*message1_), _))
.WillOnce(SaveArg<1>(&process_msg_cb));
EXPECT_CALL(error_observer_, OnConnectionError(net::ERR_FAILED));
message_pump_->SetMessageProcessor(&receiver_);
ASSERT_FALSE(read_packet_cb.is_null());
base::ResetAndReturn(&read_packet_cb).Run(message1_->ByteSize());
// Trigger next packet read
process_msg_cb.Run(net::OK);
ASSERT_FALSE(read_packet_cb.is_null());
base::ResetAndReturn(&read_packet_cb).Run(net::ERR_FAILED);
}
// Reader completes reading one packet synchronously, but packet is invalid
TEST_F(BlimpMessagePumpTest, InvalidPacket) {
net::CompletionCallback read_packet_cb;
std::string test_msg("msg");
EXPECT_CALL(reader_, ReadPacket(NotNull(), _))
.WillOnce(DoAll(FillBufferFromString<0>(test_msg),
SaveArg<1>(&read_packet_cb)));
EXPECT_CALL(error_observer_, OnConnectionError(net::ERR_FAILED));
message_pump_->SetMessageProcessor(&receiver_);
ASSERT_FALSE(read_packet_cb.is_null());
base::ResetAndReturn(&read_packet_cb).Run(message1_->ByteSize());
}
// Outgoing MessageProcessor can be set to NULL if no read is pending.
// This test NULLs the outgoing processor from within ProcessMessage().
TEST_F(BlimpMessagePumpTest, NullMessageProcessor) {
// Set up a ReadPacket expectation to return one message to process.
net::CompletionCallback read_packet_cb;
EXPECT_CALL(reader_, ReadPacket(NotNull(), _))
.WillOnce(DoAll(FillBufferFromMessage<0>(message1_.get()),
SaveArg<1>(&read_packet_cb)))
.RetiresOnSaturation();
// Set up a ProcessMessage expectation to NULL the outgoing processor.
net::CompletionCallback process_msg_cb;
EXPECT_CALL(receiver_, MockableProcessMessage(EqualsProto(*message1_), _))
.WillOnce(DoAll(
InvokeWithoutArgs(this, &BlimpMessagePumpTest::NullMessageProcessor),
SaveArg<1>(&process_msg_cb)));
// Set the outgoing processor to start the MessagePump.
message_pump_->SetMessageProcessor(&receiver_);
ASSERT_FALSE(read_packet_cb.is_null());
base::ResetAndReturn(&read_packet_cb).Run(message1_->ByteSize());
process_msg_cb.Run(net::OK);
// Running |process_msg_cb| should NOT trigger another ReadPacket call.
}
} // namespace
} // namespace blimp
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