| // |
| // Copyright (C) 2023 The Android Open Source Project |
| // |
| // 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 "update_engine/payload_consumer/block_extent_writer.h" |
| |
| #include <fcntl.h> |
| |
| #include <algorithm> |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include <gtest/gtest.h> |
| #include <gmock/gmock.h> |
| |
| #include "update_engine/common/test_utils.h" |
| #include "update_engine/payload_generator/delta_diff_generator.h" |
| #include "update_engine/payload_generator/extent_utils.h" |
| #include "update_engine/common/utils.h" |
| #include "update_engine/payload_generator/extent_ranges.h" |
| |
| using std::min; |
| using std::string; |
| using std::vector; |
| using testing::_; |
| using testing::Return; |
| |
| namespace chromeos_update_engine { |
| |
| class BlockExtentWriterTest : public ::testing::Test { |
| protected: |
| void SetUp() override {} |
| void TearDown() override {} |
| }; |
| |
| class MockBlockExtentWriter : public BlockExtentWriter { |
| public: |
| MOCK_METHOD(bool, |
| WriteExtent, |
| (const void*, const Extent&, size_t), |
| (override)); |
| }; |
| |
| TEST_F(BlockExtentWriterTest, LongExtentTest) { |
| google::protobuf::RepeatedPtrField<Extent> extents; |
| *extents.Add() = ExtentForRange(0, 1); |
| *extents.Add() = ExtentForRange(2, 1); |
| *extents.Add() = ExtentForRange(4, 1); |
| // A single large extent which doesn't fit in 1 buffer |
| static constexpr auto BLOCKS_PER_BUFFER = |
| BlockExtentWriter::BUFFER_SIZE / kBlockSize; |
| *extents.Add() = ExtentForRange(10, BLOCKS_PER_BUFFER * 2); |
| MockBlockExtentWriter writer; |
| ASSERT_TRUE(writer.Init(extents, kBlockSize)); |
| std::string buffer; |
| buffer.resize(BlockExtentWriter::BUFFER_SIZE * 2); |
| ON_CALL(writer, WriteExtent(_, _, _)).WillByDefault(Return(true)); |
| EXPECT_CALL(writer, |
| WriteExtent(buffer.data(), ExtentForRange(0, 1), kBlockSize)); |
| EXPECT_CALL(writer, |
| WriteExtent(static_cast<void*>(buffer.data() + kBlockSize), |
| ExtentForRange(2, 1), |
| kBlockSize)); |
| EXPECT_CALL(writer, |
| WriteExtent(static_cast<void*>(buffer.data() + kBlockSize * 2), |
| ExtentForRange(4, 1), |
| kBlockSize)); |
| // The last chunk should be split up into multiple chunks, each chunk is 1 |
| // BUFFR_SIZE |
| EXPECT_CALL(writer, |
| WriteExtent(static_cast<void*>(buffer.data()), |
| ExtentForRange(10, BLOCKS_PER_BUFFER), |
| kBlockSize)); |
| EXPECT_CALL( |
| writer, |
| WriteExtent( |
| static_cast<void*>(buffer.data() + BlockExtentWriter::BUFFER_SIZE), |
| ExtentForRange(10 + BLOCKS_PER_BUFFER, BLOCKS_PER_BUFFER), |
| kBlockSize)); |
| ASSERT_TRUE(writer.Write(buffer.data(), kBlockSize * 3)); |
| ASSERT_TRUE(writer.Write(buffer.data(), BlockExtentWriter::BUFFER_SIZE * 2)); |
| } |
| |
| TEST_F(BlockExtentWriterTest, LongExtentMultiCall) { |
| google::protobuf::RepeatedPtrField<Extent> extents; |
| static constexpr auto BLOCKS_PER_BUFFER = |
| BlockExtentWriter::BUFFER_SIZE / kBlockSize; |
| *extents.Add() = ExtentForRange(10, BLOCKS_PER_BUFFER * 5); |
| MockBlockExtentWriter writer; |
| ASSERT_TRUE(writer.Init(extents, kBlockSize)); |
| std::string buffer; |
| buffer.resize(BlockExtentWriter::BUFFER_SIZE * 2); |
| ON_CALL(writer, WriteExtent(_, _, _)).WillByDefault(Return(true)); |
| // The last chunk should be split up into multiple chunks, each chunk is 1 |
| // BUFFR_SIZE |
| EXPECT_CALL(writer, |
| WriteExtent(static_cast<void*>(buffer.data()), |
| ExtentForRange(10, BLOCKS_PER_BUFFER), |
| kBlockSize)); |
| EXPECT_CALL( |
| writer, |
| WriteExtent(static_cast<void*>(buffer.data()), |
| ExtentForRange(10 + BLOCKS_PER_BUFFER, BLOCKS_PER_BUFFER), |
| kBlockSize)); |
| EXPECT_CALL( |
| writer, |
| WriteExtent(static_cast<void*>(buffer.data()), |
| ExtentForRange(10 + BLOCKS_PER_BUFFER * 2, BLOCKS_PER_BUFFER), |
| kBlockSize)); |
| ASSERT_TRUE(writer.Write(buffer.data(), BlockExtentWriter::BUFFER_SIZE)); |
| ASSERT_TRUE(writer.Write(buffer.data(), BlockExtentWriter::BUFFER_SIZE)); |
| ASSERT_TRUE(writer.Write(buffer.data(), BlockExtentWriter::BUFFER_SIZE)); |
| } |
| |
| void FillArbitraryData(std::string* buffer) { |
| for (size_t i = 0; i < buffer->size(); i++) { |
| (*buffer)[i] = i; |
| } |
| } |
| |
| TEST_F(BlockExtentWriterTest, SingleBufferMultiCall) { |
| google::protobuf::RepeatedPtrField<Extent> extents; |
| static constexpr auto BLOCKS_PER_BUFFER = |
| BlockExtentWriter::BUFFER_SIZE / kBlockSize; |
| *extents.Add() = ExtentForRange(10, BLOCKS_PER_BUFFER); |
| MockBlockExtentWriter writer; |
| ASSERT_TRUE(writer.Init(extents, kBlockSize)); |
| std::string buffer; |
| buffer.resize(BlockExtentWriter::BUFFER_SIZE); |
| FillArbitraryData(&buffer); |
| |
| ON_CALL(writer, WriteExtent(_, _, _)).WillByDefault(Return(true)); |
| EXPECT_CALL(writer, |
| WriteExtent(_, ExtentForRange(10, BLOCKS_PER_BUFFER), kBlockSize)) |
| .WillOnce([&buffer](const void* data, const Extent& extent, size_t) { |
| return memcmp(data, buffer.data(), buffer.size()) == 0; |
| }); |
| |
| ASSERT_TRUE( |
| writer.Write(buffer.data(), BlockExtentWriter::BUFFER_SIZE - kBlockSize)); |
| ASSERT_TRUE(writer.Write( |
| buffer.data() + BlockExtentWriter::BUFFER_SIZE - kBlockSize, kBlockSize)); |
| } |
| |
| TEST_F(BlockExtentWriterTest, MultiBufferMultiCall) { |
| google::protobuf::RepeatedPtrField<Extent> extents; |
| static constexpr auto BLOCKS_PER_BUFFER = |
| BlockExtentWriter::BUFFER_SIZE / kBlockSize; |
| *extents.Add() = ExtentForRange(10, BLOCKS_PER_BUFFER + 1); |
| MockBlockExtentWriter writer; |
| ASSERT_TRUE(writer.Init(extents, kBlockSize)); |
| std::string buffer; |
| buffer.resize(BlockExtentWriter::BUFFER_SIZE); |
| FillArbitraryData(&buffer); |
| |
| ON_CALL(writer, WriteExtent(_, _, _)).WillByDefault(Return(true)); |
| EXPECT_CALL(writer, |
| WriteExtent(_, ExtentForRange(10, BLOCKS_PER_BUFFER), kBlockSize)) |
| .WillOnce([&buffer](const void* data, const Extent& extent, size_t) { |
| return memcmp(data, buffer.data(), extent.num_blocks() * kBlockSize) == |
| 0; |
| }); |
| EXPECT_CALL( |
| writer, |
| WriteExtent(_, ExtentForRange(10 + BLOCKS_PER_BUFFER, 1), kBlockSize)); |
| |
| ASSERT_TRUE(writer.Write(buffer.data(), BlockExtentWriter::BUFFER_SIZE)); |
| ASSERT_TRUE(writer.Write(buffer.data(), kBlockSize)); |
| } |
| |
| } // namespace chromeos_update_engine |