rhubarb-lip-sync/lib/webrtc-8d2248ff/webrtc/base/filerotatingstream_unittest.cc

319 lines
12 KiB
C++

/*
* Copyright 2015 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <memory>
#include "webrtc/base/arraysize.h"
#include "webrtc/base/checks.h"
#include "webrtc/base/filerotatingstream.h"
#include "webrtc/base/fileutils.h"
#include "webrtc/base/gunit.h"
#include "webrtc/base/pathutils.h"
namespace rtc {
class FileRotatingStreamTest : public ::testing::Test {
protected:
static const char* kFilePrefix;
static const size_t kMaxFileSize;
void Init(const std::string& dir_name,
const std::string& file_prefix,
size_t max_file_size,
size_t num_log_files) {
Pathname test_path;
ASSERT_TRUE(Filesystem::GetAppTempFolder(&test_path));
// Append per-test output path in order to run within gtest parallel.
test_path.AppendFolder(dir_name);
ASSERT_TRUE(Filesystem::CreateFolder(test_path));
dir_path_ = test_path.pathname();
ASSERT_TRUE(dir_path_.size());
stream_.reset(new FileRotatingStream(dir_path_, file_prefix, max_file_size,
num_log_files));
}
void TearDown() override {
stream_.reset();
if (dir_path_.size() && Filesystem::IsFolder(dir_path_) &&
Filesystem::IsTemporaryPath(dir_path_)) {
Filesystem::DeleteFolderAndContents(dir_path_);
}
}
// Writes the data to the stream and flushes it.
void WriteAndFlush(const void* data, const size_t data_len) {
EXPECT_EQ(SR_SUCCESS, stream_->WriteAll(data, data_len, nullptr, nullptr));
EXPECT_TRUE(stream_->Flush());
}
// Checks that the stream reads in the expected contents and then returns an
// end of stream result.
void VerifyStreamRead(const char* expected_contents,
const size_t expected_length,
const std::string& dir_path,
const char* file_prefix) {
std::unique_ptr<FileRotatingStream> stream;
stream.reset(new FileRotatingStream(dir_path, file_prefix));
ASSERT_TRUE(stream->Open());
size_t read = 0;
size_t stream_size = 0;
EXPECT_TRUE(stream->GetSize(&stream_size));
std::unique_ptr<uint8_t[]> buffer(new uint8_t[expected_length]);
EXPECT_EQ(SR_SUCCESS,
stream->ReadAll(buffer.get(), expected_length, &read, nullptr));
EXPECT_EQ(0, memcmp(expected_contents, buffer.get(), expected_length));
EXPECT_EQ(SR_EOS, stream->ReadAll(buffer.get(), 1, nullptr, nullptr));
EXPECT_EQ(stream_size, read);
}
void VerifyFileContents(const char* expected_contents,
const size_t expected_length,
const std::string& file_path) {
std::unique_ptr<uint8_t[]> buffer(new uint8_t[expected_length]);
std::unique_ptr<FileStream> stream(Filesystem::OpenFile(file_path, "r"));
EXPECT_TRUE(stream);
if (!stream) {
return;
}
EXPECT_EQ(rtc::SR_SUCCESS,
stream->ReadAll(buffer.get(), expected_length, nullptr, nullptr));
EXPECT_EQ(0, memcmp(expected_contents, buffer.get(), expected_length));
size_t file_size = 0;
EXPECT_TRUE(stream->GetSize(&file_size));
EXPECT_EQ(file_size, expected_length);
}
std::unique_ptr<FileRotatingStream> stream_;
std::string dir_path_;
};
const char* FileRotatingStreamTest::kFilePrefix = "FileRotatingStreamTest";
const size_t FileRotatingStreamTest::kMaxFileSize = 2;
// Tests that stream state is correct before and after Open / Close.
TEST_F(FileRotatingStreamTest, State) {
Init("FileRotatingStreamTestState", kFilePrefix, kMaxFileSize, 3);
EXPECT_EQ(SS_CLOSED, stream_->GetState());
ASSERT_TRUE(stream_->Open());
EXPECT_EQ(SS_OPEN, stream_->GetState());
stream_->Close();
EXPECT_EQ(SS_CLOSED, stream_->GetState());
}
// Tests that nothing is written to file when data of length zero is written.
TEST_F(FileRotatingStreamTest, EmptyWrite) {
Init("FileRotatingStreamTestEmptyWrite", kFilePrefix, kMaxFileSize, 3);
ASSERT_TRUE(stream_->Open());
WriteAndFlush("a", 0);
std::string logfile_path = stream_->GetFilePath(0);
std::unique_ptr<FileStream> stream(Filesystem::OpenFile(logfile_path, "r"));
size_t file_size = 0;
EXPECT_TRUE(stream->GetSize(&file_size));
EXPECT_EQ(0u, file_size);
}
// Tests that a write operation followed by a read returns the expected data
// and writes to the expected files.
TEST_F(FileRotatingStreamTest, WriteAndRead) {
Init("FileRotatingStreamTestWriteAndRead", kFilePrefix, kMaxFileSize, 3);
ASSERT_TRUE(stream_->Open());
// The test is set up to create three log files of length 2. Write and check
// contents.
std::string messages[3] = {"aa", "bb", "cc"};
for (size_t i = 0; i < arraysize(messages); ++i) {
const std::string& message = messages[i];
WriteAndFlush(message.c_str(), message.size());
// Since the max log size is 2, we will be causing rotation. Read from the
// next file.
VerifyFileContents(message.c_str(), message.size(),
stream_->GetFilePath(1));
}
// Check that exactly three files exist.
for (size_t i = 0; i < arraysize(messages); ++i) {
EXPECT_TRUE(Filesystem::IsFile(stream_->GetFilePath(i)));
}
std::string message("d");
WriteAndFlush(message.c_str(), message.size());
for (size_t i = 0; i < arraysize(messages); ++i) {
EXPECT_TRUE(Filesystem::IsFile(stream_->GetFilePath(i)));
}
// TODO(tkchin): Maybe check all the files in the dir.
// Reopen for read.
std::string expected_contents("bbccd");
VerifyStreamRead(expected_contents.c_str(), expected_contents.size(),
dir_path_, kFilePrefix);
}
// Tests that writing data greater than the total capacity of the files
// overwrites the files correctly and is read correctly after.
TEST_F(FileRotatingStreamTest, WriteOverflowAndRead) {
Init("FileRotatingStreamTestWriteOverflowAndRead", kFilePrefix, kMaxFileSize,
3);
ASSERT_TRUE(stream_->Open());
// This should cause overflow across all three files, such that the first file
// we wrote to also gets overwritten.
std::string message("foobarbaz");
WriteAndFlush(message.c_str(), message.size());
std::string expected_file_contents("z");
VerifyFileContents(expected_file_contents.c_str(),
expected_file_contents.size(), stream_->GetFilePath(0));
std::string expected_stream_contents("arbaz");
VerifyStreamRead(expected_stream_contents.c_str(),
expected_stream_contents.size(), dir_path_, kFilePrefix);
}
// Tests that the returned file paths have the right folder and prefix.
TEST_F(FileRotatingStreamTest, GetFilePath) {
Init("FileRotatingStreamTestGetFilePath", kFilePrefix, kMaxFileSize, 20);
for (auto i = 0; i < 20; ++i) {
Pathname path(stream_->GetFilePath(i));
EXPECT_EQ(0, path.folder().compare(dir_path_));
EXPECT_EQ(0, path.filename().compare(0, strlen(kFilePrefix), kFilePrefix));
}
}
class CallSessionFileRotatingStreamTest : public ::testing::Test {
protected:
void Init(const std::string& dir_name, size_t max_total_log_size) {
Pathname test_path;
ASSERT_TRUE(Filesystem::GetAppTempFolder(&test_path));
// Append per-test output path in order to run within gtest parallel.
test_path.AppendFolder(dir_name);
ASSERT_TRUE(Filesystem::CreateFolder(test_path));
dir_path_ = test_path.pathname();
ASSERT_TRUE(dir_path_.size());
stream_.reset(
new CallSessionFileRotatingStream(dir_path_, max_total_log_size));
}
virtual void TearDown() {
stream_.reset();
if (dir_path_.size() && Filesystem::IsFolder(dir_path_) &&
Filesystem::IsTemporaryPath(dir_path_)) {
Filesystem::DeleteFolderAndContents(dir_path_);
}
}
// Writes the data to the stream and flushes it.
void WriteAndFlush(const void* data, const size_t data_len) {
EXPECT_EQ(SR_SUCCESS, stream_->WriteAll(data, data_len, nullptr, nullptr));
EXPECT_TRUE(stream_->Flush());
}
// Checks that the stream reads in the expected contents and then returns an
// end of stream result.
void VerifyStreamRead(const char* expected_contents,
const size_t expected_length,
const std::string& dir_path) {
std::unique_ptr<CallSessionFileRotatingStream> stream(
new CallSessionFileRotatingStream(dir_path));
ASSERT_TRUE(stream->Open());
size_t read = 0;
size_t stream_size = 0;
EXPECT_TRUE(stream->GetSize(&stream_size));
std::unique_ptr<uint8_t[]> buffer(new uint8_t[expected_length]);
EXPECT_EQ(SR_SUCCESS,
stream->ReadAll(buffer.get(), expected_length, &read, nullptr));
EXPECT_EQ(0, memcmp(expected_contents, buffer.get(), expected_length));
EXPECT_EQ(SR_EOS, stream->ReadAll(buffer.get(), 1, nullptr, nullptr));
EXPECT_EQ(stream_size, read);
}
std::unique_ptr<CallSessionFileRotatingStream> stream_;
std::string dir_path_;
};
// Tests that writing and reading to a stream with the smallest possible
// capacity works.
TEST_F(CallSessionFileRotatingStreamTest, WriteAndReadSmallest) {
Init("CallSessionFileRotatingStreamTestWriteAndReadSmallest", 4);
ASSERT_TRUE(stream_->Open());
std::string message("abcde");
WriteAndFlush(message.c_str(), message.size());
std::string expected_contents("abe");
VerifyStreamRead(expected_contents.c_str(), expected_contents.size(),
dir_path_);
}
// Tests that writing and reading to a stream with capacity lesser than 4MB
// behaves correctly.
TEST_F(CallSessionFileRotatingStreamTest, WriteAndReadSmall) {
Init("CallSessionFileRotatingStreamTestWriteAndReadSmall", 8);
ASSERT_TRUE(stream_->Open());
std::string message("123456789");
WriteAndFlush(message.c_str(), message.size());
std::string expected_contents("1234789");
VerifyStreamRead(expected_contents.c_str(), expected_contents.size(),
dir_path_);
}
// Tests that writing and reading to a stream with capacity greater than 4MB
// behaves correctly.
TEST_F(CallSessionFileRotatingStreamTest, WriteAndReadLarge) {
Init("CallSessionFileRotatingStreamTestWriteAndReadLarge", 6 * 1024 * 1024);
ASSERT_TRUE(stream_->Open());
const size_t buffer_size = 1024 * 1024;
std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
for (int i = 0; i < 8; i++) {
memset(buffer.get(), i, buffer_size);
EXPECT_EQ(SR_SUCCESS,
stream_->WriteAll(buffer.get(), buffer_size, nullptr, nullptr));
}
stream_.reset(new CallSessionFileRotatingStream(dir_path_));
ASSERT_TRUE(stream_->Open());
std::unique_ptr<uint8_t[]> expected_buffer(new uint8_t[buffer_size]);
int expected_vals[] = {0, 1, 2, 6, 7};
for (size_t i = 0; i < arraysize(expected_vals); ++i) {
memset(expected_buffer.get(), expected_vals[i], buffer_size);
EXPECT_EQ(SR_SUCCESS,
stream_->ReadAll(buffer.get(), buffer_size, nullptr, nullptr));
EXPECT_EQ(0, memcmp(buffer.get(), expected_buffer.get(), buffer_size));
}
EXPECT_EQ(SR_EOS, stream_->ReadAll(buffer.get(), 1, nullptr, nullptr));
}
// Tests that writing and reading to a stream where only the first file is
// written to behaves correctly.
TEST_F(CallSessionFileRotatingStreamTest, WriteAndReadFirstHalf) {
Init("CallSessionFileRotatingStreamTestWriteAndReadFirstHalf",
6 * 1024 * 1024);
ASSERT_TRUE(stream_->Open());
const size_t buffer_size = 1024 * 1024;
std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
for (int i = 0; i < 2; i++) {
memset(buffer.get(), i, buffer_size);
EXPECT_EQ(SR_SUCCESS,
stream_->WriteAll(buffer.get(), buffer_size, nullptr, nullptr));
}
stream_.reset(new CallSessionFileRotatingStream(dir_path_));
ASSERT_TRUE(stream_->Open());
std::unique_ptr<uint8_t[]> expected_buffer(new uint8_t[buffer_size]);
int expected_vals[] = {0, 1};
for (size_t i = 0; i < arraysize(expected_vals); ++i) {
memset(expected_buffer.get(), expected_vals[i], buffer_size);
EXPECT_EQ(SR_SUCCESS,
stream_->ReadAll(buffer.get(), buffer_size, nullptr, nullptr));
EXPECT_EQ(0, memcmp(buffer.get(), expected_buffer.get(), buffer_size));
}
EXPECT_EQ(SR_EOS, stream_->ReadAll(buffer.get(), 1, nullptr, nullptr));
}
} // namespace rtc