C++ (Cpp) unique_ptr::compress Examples

Example #1

File: CompressionTest.cpp Project: ManS/folly

void CompressionCorruptionTest::runSimpleTest(const DataHolder& dh) {
  constexpr uint64_t uncompressedLength = 42;
  auto original = IOBuf::wrapBuffer(dh.data(uncompressedLength));
  auto compressed = codec_->compress(original.get());

  if (!codec_->needsUncompressedLength()) {
    auto uncompressed = codec_->uncompress(compressed.get());
    EXPECT_EQ(uncompressedLength, uncompressed->computeChainDataLength());
    EXPECT_EQ(dh.hash(uncompressedLength), hashIOBuf(uncompressed.get()));
  }
  {
    auto uncompressed = codec_->uncompress(compressed.get(),
                                           uncompressedLength);
    EXPECT_EQ(uncompressedLength, uncompressed->computeChainDataLength());
    EXPECT_EQ(dh.hash(uncompressedLength), hashIOBuf(uncompressed.get()));
  }

  EXPECT_THROW(codec_->uncompress(compressed.get(), uncompressedLength + 1),
               std::runtime_error);

  // Corrupt the first character
  ++(compressed->writableData()[0]);

  if (!codec_->needsUncompressedLength()) {
    EXPECT_THROW(codec_->uncompress(compressed.get()),
                 std::runtime_error);
  }

  EXPECT_THROW(codec_->uncompress(compressed.get(), uncompressedLength),
               std::runtime_error);
}

Example #2

File: CompressionTest.cpp Project: ManS/folly

void CompressionTest::runSimpleTest(const DataHolder& dh) {
  auto original = IOBuf::wrapBuffer(dh.data(uncompressedLength_));
  auto compressed = codec_->compress(original.get());
  if (!codec_->needsUncompressedLength()) {
    auto uncompressed = codec_->uncompress(compressed.get());
    EXPECT_EQ(uncompressedLength_, uncompressed->computeChainDataLength());
    EXPECT_EQ(dh.hash(uncompressedLength_), hashIOBuf(uncompressed.get()));
  }
  {
    auto uncompressed = codec_->uncompress(compressed.get(),
                                           uncompressedLength_);
    EXPECT_EQ(uncompressedLength_, uncompressed->computeChainDataLength());
    EXPECT_EQ(dh.hash(uncompressedLength_), hashIOBuf(uncompressed.get()));
  }
}

Example #3

File: CompressionTest.cpp Project: AmineCherrai/folly

void CompressionVarintTest::runSimpleTest(const DataHolder& dh) {
  auto original = IOBuf::wrapBuffer(dh.data(uncompressedLength_));
  auto compressed = codec_->compress(original.get());
  auto breakPoint =
      1UL +
      Random::rand64(std::max(9UL, oneBasedMsbPos(uncompressedLength_)) / 9UL);
  auto tinyBuf = IOBuf::copyBuffer(compressed->data(),
                                   std::min(compressed->length(), breakPoint));
  compressed->trimStart(breakPoint);
  tinyBuf->prependChain(std::move(compressed));
  compressed = std::move(tinyBuf);

  auto uncompressed = codec_->uncompress(compressed.get());

  EXPECT_EQ(uncompressedLength_, uncompressed->computeChainDataLength());
  EXPECT_EQ(dh.hash(uncompressedLength_), hashIOBuf(uncompressed.get()));
}