| // 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/log_output_stream.h" |
| |
| #include <algorithm> |
| #include <memory> |
| #include <string> |
| |
| #include "base/macros.h" |
| #include "gtest/gtest.h" |
| |
| namespace crashpad { |
| namespace test { |
| namespace { |
| |
| constexpr size_t kOutputCap = 128 * 1024; |
| constexpr size_t kLineBufferSize = 512; |
| const char* kBeginGuard = "-----BEGIN CRASHPAD MINIDUMP-----"; |
| const char* kEndGuard = "-----END CRASHPAD MINIDUMP-----"; |
| const char* kAbortGuard = "-----ABORT CRASHPAD MINIDUMP-----"; |
| |
| class LogOutputStreamTestDelegate final : public LogOutputStream::Delegate { |
| public: |
| explicit LogOutputStreamTestDelegate(std::string* logging_destination) |
| : logging_destination_(logging_destination) {} |
| ~LogOutputStreamTestDelegate() override = default; |
| |
| int Log(const char* buf) override { |
| size_t len = strnlen(buf, kLineBufferSize + 1); |
| EXPECT_LE(len, kLineBufferSize); |
| logging_destination_->append(buf, len); |
| return static_cast<int>(len); |
| } |
| |
| size_t OutputCap() override { return kOutputCap; } |
| size_t LineWidth() override { return kLineBufferSize; } |
| |
| private: |
| std::string* logging_destination_; |
| }; |
| |
| class LogOutputStreamTest : public testing::Test { |
| public: |
| LogOutputStreamTest() {} |
| |
| protected: |
| void SetUp() override { |
| log_stream_ = std::make_unique<LogOutputStream>( |
| std::make_unique<LogOutputStreamTestDelegate>(&test_log_output_)); |
| } |
| |
| 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>('a'); |
| return deterministic_input_base; |
| } |
| |
| const std::string& test_log_output() const { return test_log_output_; } |
| |
| LogOutputStream* log_stream() const { return log_stream_.get(); } |
| |
| private: |
| std::unique_ptr<LogOutputStream> log_stream_; |
| std::string test_log_output_; |
| std::unique_ptr<uint8_t[]> deterministic_input_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LogOutputStreamTest); |
| }; |
| |
| TEST_F(LogOutputStreamTest, WriteShortLog) { |
| const uint8_t* input = BuildDeterministicInput(2); |
| EXPECT_TRUE(log_stream()->Write(input, 2)); |
| EXPECT_TRUE(log_stream()->Flush()); |
| // Verify OutputStream wrote 2 guards and data. |
| EXPECT_FALSE(test_log_output().empty()); |
| EXPECT_EQ(test_log_output(), |
| std::string(kBeginGuard).append("aa").append(kEndGuard)); |
| } |
| |
| TEST_F(LogOutputStreamTest, WriteLongLog) { |
| size_t input_length = kLineBufferSize + kLineBufferSize / 2; |
| const uint8_t* input = BuildDeterministicInput(input_length); |
| // Verify OutputStream wrote 2 guards and data. |
| EXPECT_TRUE(log_stream()->Write(input, input_length)); |
| EXPECT_TRUE(log_stream()->Flush()); |
| EXPECT_EQ(test_log_output().size(), |
| strlen(kBeginGuard) + strlen(kEndGuard) + input_length); |
| } |
| |
| TEST_F(LogOutputStreamTest, WriteAbort) { |
| size_t input_length = kOutputCap + kLineBufferSize; |
| const uint8_t* input = BuildDeterministicInput(input_length); |
| EXPECT_FALSE(log_stream()->Write(input, input_length)); |
| EXPECT_EQ( |
| test_log_output().substr(test_log_output().size() - strlen(kAbortGuard)), |
| kAbortGuard); |
| } |
| |
| TEST_F(LogOutputStreamTest, FlushAbort) { |
| size_t input_length = kOutputCap - strlen(kBeginGuard) + kLineBufferSize / 2; |
| const uint8_t* input = BuildDeterministicInput(input_length); |
| EXPECT_TRUE(log_stream()->Write(input, input_length)); |
| EXPECT_FALSE(log_stream()->Flush()); |
| EXPECT_EQ( |
| test_log_output().substr(test_log_output().size() - strlen(kAbortGuard)), |
| kAbortGuard); |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace crashpad |