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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/file_transfer/rtc_log_file_operations.h"
#include "base/memory/raw_ptr.h"
#include "base/test/task_environment.h"
#include "remoting/protocol/fake_connection_to_client.h"
#include "remoting/protocol/session.h"
#include "remoting/protocol/webrtc_event_log_data.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting {
namespace {
std::string ToString(const std::vector<std::uint8_t>& data) {
return std::string(data.begin(), data.end());
}
class FakeConnectionWithRtcLog : public protocol::FakeConnectionToClient {
public:
explicit FakeConnectionWithRtcLog(protocol::WebrtcEventLogData* event_log)
: protocol::FakeConnectionToClient(nullptr), event_log_(event_log) {}
~FakeConnectionWithRtcLog() override = default;
FakeConnectionWithRtcLog(const FakeConnectionWithRtcLog&) = delete;
FakeConnectionWithRtcLog& operator=(const FakeConnectionWithRtcLog&) = delete;
protocol::WebrtcEventLogData* rtc_event_log() override { return event_log_; }
void set_event_log(protocol::WebrtcEventLogData* log) { event_log_ = log; }
private:
raw_ptr<protocol::WebrtcEventLogData> event_log_;
};
} // namespace
class RtcLogFileOperationsTest : public testing::Test {
public:
RtcLogFileOperationsTest()
: connection_(&event_log_), file_operations_(&connection_) {}
void SetUp() override { reader_ = file_operations_.CreateReader(); }
protected:
base::test::SingleThreadTaskEnvironment task_environment_;
protocol::WebrtcEventLogData event_log_;
FakeConnectionWithRtcLog connection_;
RtcLogFileOperations file_operations_;
std::unique_ptr<FileOperations::Reader> reader_;
// These are the most-recent results from the callbacks.
std::optional<FileOperations::Reader::OpenResult> open_result_;
std::optional<FileOperations::Reader::ReadResult> read_result_;
FileOperations::Reader::OpenCallback MakeOpenCallback() {
return base::BindOnce(&RtcLogFileOperationsTest::OnOpenResult,
base::Unretained(this));
}
FileOperations::Reader::ReadCallback MakeReadCallback() {
return base::BindOnce(&RtcLogFileOperationsTest::OnReadResult,
base::Unretained(this));
}
private:
void OnOpenResult(FileOperations::Reader::OpenResult result) {
open_result_ = result;
}
void OnReadResult(FileOperations::Reader::ReadResult result) {
read_result_ = result;
}
};
TEST_F(RtcLogFileOperationsTest, InitialState_IsCreated) {
EXPECT_EQ(reader_->state(), FileOperations::State::kCreated);
}
TEST_F(RtcLogFileOperationsTest, NonWebrtcConnection_RaisesProtocolError) {
connection_.set_event_log(nullptr);
reader_->Open(MakeOpenCallback());
task_environment_.RunUntilIdle();
ASSERT_TRUE(open_result_);
ASSERT_FALSE(*open_result_);
EXPECT_EQ(open_result_->error().type(),
protocol::FileTransfer_Error_Type_PROTOCOL_ERROR);
}
TEST_F(RtcLogFileOperationsTest, EmptyLog_ZeroBytesSent) {
// No setup needed, the RTC log is initially empty.
reader_->Open(MakeOpenCallback());
task_environment_.RunUntilIdle();
reader_->ReadChunk(1U, MakeReadCallback());
task_environment_.RunUntilIdle();
ASSERT_TRUE(open_result_);
ASSERT_TRUE(*open_result_);
ASSERT_TRUE(read_result_);
ASSERT_TRUE(*read_result_);
EXPECT_TRUE((*read_result_)->empty());
EXPECT_EQ(reader_->state(), FileOperations::State::kComplete);
}
TEST_F(RtcLogFileOperationsTest, FileSizeOfMultipleLogSections_IsCorrect) {
event_log_.SetMaxSectionSizeForTest(3);
event_log_.Write("aaa");
event_log_.Write("bb");
event_log_.Write("cc");
reader_->Open(MakeOpenCallback());
task_environment_.RunUntilIdle();
EXPECT_EQ(reader_->size(), 7U);
}
TEST_F(RtcLogFileOperationsTest, PartialTransfer_IsReady) {
event_log_.Write("aaa");
reader_->Open(MakeOpenCallback());
task_environment_.RunUntilIdle();
reader_->ReadChunk(2U, MakeReadCallback());
task_environment_.RunUntilIdle();
EXPECT_EQ(reader_->state(), FileOperations::State::kReady);
}
TEST_F(RtcLogFileOperationsTest, CompleteTransfer_IsComplete) {
event_log_.Write("aaa");
reader_->Open(MakeOpenCallback());
task_environment_.RunUntilIdle();
reader_->ReadChunk(3U, MakeReadCallback());
task_environment_.RunUntilIdle();
// State becomes Complete only after a final read has returned 0 bytes.
reader_->ReadChunk(3U, MakeReadCallback());
task_environment_.RunUntilIdle();
ASSERT_TRUE(read_result_);
ASSERT_TRUE(*read_result_);
EXPECT_TRUE((*read_result_)->empty());
EXPECT_EQ(reader_->state(), FileOperations::State::kComplete);
}
TEST_F(RtcLogFileOperationsTest,
MultipleReadsOverMultipleSections_CorrectDataIsSent) {
event_log_.SetMaxSectionSizeForTest(3);
event_log_.Write("aaa");
event_log_.Write("bbb");
event_log_.Write("ccc");
reader_->Open(MakeOpenCallback());
task_environment_.RunUntilIdle();
reader_->ReadChunk(2U, MakeReadCallback());
task_environment_.RunUntilIdle();
ASSERT_TRUE(read_result_);
ASSERT_TRUE(*read_result_);
EXPECT_EQ(ToString(**read_result_), "aa");
reader_->ReadChunk(5U, MakeReadCallback());
task_environment_.RunUntilIdle();
EXPECT_EQ(ToString(**read_result_), "abbbc");
reader_->ReadChunk(100U, MakeReadCallback());
task_environment_.RunUntilIdle();
EXPECT_EQ(ToString(**read_result_), "cc");
}
} // namespace remoting
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