| // Copyright 2019 The Crashpad Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "util/stream/file_encoder.h" |
| |
| #include <algorithm> |
| #include <memory> |
| #include <string> |
| |
| #include "base/files/file_path.h" |
| #include "base/macros.h" |
| #include "gtest/gtest.h" |
| #include "test/scoped_temp_dir.h" |
| #include "util/file/file_io.h" |
| #include "util/stream/file_output_stream.h" |
| |
| namespace crashpad { |
| namespace test { |
| namespace { |
| |
| constexpr size_t kBufferSize = 4096; |
| |
| class FileEncoderTest : public testing::Test { |
| public: |
| FileEncoderTest() {} |
| |
| void Verify(size_t size) { |
| std::string contents; |
| ASSERT_TRUE(LoggingReadEntireFile(decoded_, &contents)); |
| ASSERT_EQ(contents.size(), size); |
| EXPECT_EQ(memcmp(deterministic_input_.get(), contents.data(), size), 0); |
| } |
| |
| const uint8_t* BuildDeterministicInput(size_t size) { |
| deterministic_input_ = std::make_unique<uint8_t[]>(size); |
| uint8_t* deterministic_input_base = deterministic_input_.get(); |
| while (size-- > 0) |
| deterministic_input_base[size] = static_cast<uint8_t>(size); |
| return deterministic_input_base; |
| } |
| |
| void GenerateOrigFile(size_t size) { |
| ScopedFileHandle write_handle(OpenFileForWrite( |
| orig_, FileWriteMode::kCreateOrFail, FilePermissions::kOwnerOnly)); |
| ASSERT_TRUE(write_handle.is_valid()); |
| FileOutputStream out(write_handle.get()); |
| const uint8_t* buf = BuildDeterministicInput(size); |
| while (size > 0) { |
| size_t m = std::min(kBufferSize, size); |
| ASSERT_TRUE(out.Write(buf, m)); |
| size -= m; |
| buf += m; |
| } |
| ASSERT_TRUE(out.Flush()); |
| } |
| |
| FileEncoder* encoder() const { return encoder_.get(); } |
| |
| FileEncoder* decoder() const { return decoder_.get(); } |
| |
| protected: |
| void SetUp() override { |
| temp_dir_ = std::make_unique<ScopedTempDir>(); |
| orig_ = base::FilePath(temp_dir_->path().Append(FILE_PATH_LITERAL("orig"))); |
| encoded_ = |
| base::FilePath(temp_dir_->path().Append(FILE_PATH_LITERAL("encoded"))); |
| decoded_ = |
| base::FilePath(temp_dir_->path().Append(FILE_PATH_LITERAL("decoded"))); |
| encoder_ = std::make_unique<FileEncoder>( |
| FileEncoder::Mode::kEncode, orig_, encoded_); |
| decoder_ = std::make_unique<FileEncoder>( |
| FileEncoder::Mode::kDecode, encoded_, decoded_); |
| } |
| |
| private: |
| std::unique_ptr<ScopedTempDir> temp_dir_; |
| base::FilePath orig_; |
| base::FilePath encoded_; |
| base::FilePath decoded_; |
| std::unique_ptr<FileEncoder> encoder_; |
| std::unique_ptr<FileEncoder> decoder_; |
| std::unique_ptr<uint8_t[]> deterministic_input_; |
| }; |
| |
| TEST_F(FileEncoderTest, ProcessShortFile) { |
| GenerateOrigFile(kBufferSize - 512); |
| EXPECT_TRUE(encoder()->Process()); |
| EXPECT_TRUE(decoder()->Process()); |
| Verify(kBufferSize - 512); |
| } |
| |
| TEST_F(FileEncoderTest, ProcessLongFile) { |
| GenerateOrigFile(kBufferSize + 512); |
| EXPECT_TRUE(encoder()->Process()); |
| EXPECT_TRUE(decoder()->Process()); |
| Verify(kBufferSize + 512); |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace crashpad |