cloudini 0.3.1

The cloudini point cloud compression library for Rust.
Documentation 
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/*
 * Copyright 2025 Davide Faconti
 *
 * 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 <gtest/gtest.h>

#include "cloudini_lib/cloudini.hpp"

TEST(Cloudini, Header) {
  using namespace Cloudini;

  EncodingInfo header;
  header.width = 10;
  header.height = 20;
  header.point_step = sizeof(float) * 4;
  header.encoding_opt = EncodingOptions::LOSSY;
  header.compression_opt = CompressionOption::ZSTD;

  header.fields.push_back({"x", 0, FieldType::FLOAT32, 0.01});
  header.fields.push_back({"y", 4, FieldType::FLOAT32, 0.01});
  header.fields.push_back({"z", 8, FieldType::FLOAT32, 0.01});
  header.fields.push_back({"intensity", 12, FieldType::FLOAT32, 0.01});

  std::vector<uint8_t> buffer;
  EncodeHeader(header, buffer);

  ConstBufferView input(buffer.data(), buffer.size());
  auto decoded_header = DecodeHeader(input);

  ASSERT_EQ(decoded_header.width, header.width);
  ASSERT_EQ(decoded_header.height, header.height);
  ASSERT_EQ(decoded_header.point_step, header.point_step);
  ASSERT_EQ(decoded_header.encoding_opt, header.encoding_opt);
  ASSERT_EQ(decoded_header.compression_opt, header.compression_opt);
  ASSERT_EQ(decoded_header.fields.size(), header.fields.size());
  for (size_t i = 0; i < header.fields.size(); ++i) {
    ASSERT_EQ(decoded_header.fields[i].name, header.fields[i].name);
    ASSERT_EQ(decoded_header.fields[i].offset, header.fields[i].offset);
    ASSERT_EQ(decoded_header.fields[i].type, header.fields[i].type);
    ASSERT_EQ(decoded_header.fields[i].resolution, header.fields[i].resolution);
  }
}

TEST(Cloudini, HeaderTruncatedInput) {
  using namespace Cloudini;

  std::vector<uint8_t> buffer = {'C', 'L', 'O', 'U'};
  ConstBufferView input(buffer.data(), buffer.size());
  EXPECT_THROW(DecodeHeader(input), std::runtime_error);
}

TEST(Cloudini, HeaderMissingYamlTerminator) {
  using namespace Cloudini;

  EncodingInfo header;
  header.width = 1;
  header.height = 1;
  header.point_step = sizeof(float) * 3;
  header.encoding_opt = EncodingOptions::LOSSY;
  header.compression_opt = CompressionOption::ZSTD;
  header.fields.push_back({"x", 0, FieldType::FLOAT32, 0.01F});
  header.fields.push_back({"y", 4, FieldType::FLOAT32, 0.01F});
  header.fields.push_back({"z", 8, FieldType::FLOAT32, 0.01F});

  std::vector<uint8_t> buffer;
  EncodeHeader(header, buffer);
  buffer.pop_back();  // remove YAML null terminator

  ConstBufferView input(buffer.data(), buffer.size());
  EXPECT_THROW(DecodeHeader(input), std::runtime_error);
}