Function TestLEB128Decode

cpp/src/arrow/util/bit_util_test.cc:820–829

/// Utility function to test LEB128 decoding with known byte array and expected result
template <typename Int>
void TestLEB128Decode(const std::vector<uint8_t>& data, Int expected_value,
                      int32_t expected_bytes_read) {
  Int result = 0;
  auto bytes_read = bit_util::ParseLeadingLEB128(
      data.data(), static_cast<int32_t>(data.size()), &result);
  EXPECT_EQ(bytes_read, expected_bytes_read);
  if (expected_bytes_read > 0) {
    EXPECT_EQ(result, expected_value);
  }
}

/// Test decoding from known LEB128 byte sequences with edge case parameters.
/// \see LEB128.KnownSuccessfulValues for other known values tested.