Function RandomUnpackTest

be/src/util/bit-packing-test.cc:171–187

template <typename UINT_T>
void RandomUnpackTest() {
  const std::vector<UINT_T> in = GenerateRandomInput<UINT_T>(NUM_IN_VALUES,
      std::numeric_limits<UINT_T>::min(), std::numeric_limits<UINT_T>::max());

  const std::vector<int> lengths = GetLengths();

  constexpr int MAX_BITWIDTH = BitPacking::MAX_BITWIDTH;
  const int max_bit_width = std::min<int>(MAX_BITWIDTH, sizeof(UINT_T) * CHAR_BIT);
  for (int bit_width = 0; bit_width <= max_bit_width; ++bit_width) {
    for (const int length : lengths) {
      // Test that unpacking to/from aligned and unaligned memory works.
      for (const bool aligned : {true, false}) {
        PackUnpack<UINT_T>(in.data(), length, bit_width, aligned);
      }
    }
  }
}

TEST(BitPackingTest, RandomUnpack8) {
  RandomUnpackTest<uint8_t>();