CaramelDB/tests/CodecTest.cc at main · detorresramos/CaramelDB · GitHub

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#include "TestUtils.h"
#include <gtest/gtest.h>
#include <random>
#include <src/construct/CsfCodebook.h>

namespace caramel::tests {

TEST(CodecTest, TestSingleCanonicalHuffman) {
  std::vector<uint32_t> symbols = {2, 3, 4, 5, 6, 7, 3, 4, 5, 6};
  auto huffman_output = canonicalHuffman<uint32_t>(symbols);

  for (auto [expected_key, code] : huffman_output.codedict) {
    uint32_t actual_key =
        canonicalDecode<uint32_t>(code, huffman_output.code_length_counts,
                                   huffman_output.ordered_symbols);
    ASSERT_EQ(actual_key, expected_key);
  }
}

TEST(CodecTest, TestRandomCanonicalHuffman) {
  uint32_t num_iters = 10;
  for (uint32_t iter = 0; iter < num_iters; iter++) {
    std::vector<uint32_t> symbols = genRandomVector(/* size = */ 30);

    auto huffman_output = canonicalHuffman<uint32_t>(symbols);

    for (auto [expected_key, code] : huffman_output.codedict) {
      uint32_t actual_key =
          canonicalDecode<uint32_t>(code, huffman_output.code_length_counts,
                                     huffman_output.ordered_symbols);
      ASSERT_EQ(actual_key, expected_key);
    }
  }
}

TEST(CodecTest, TestRepeatItemCanonicalHuffman) {
  std::vector<uint32_t> symbols = {2, 2, 2, 2};
  auto huffman_output =
      canonicalHuffman<uint32_t>(symbols);

  for (auto [expected_key, code] : huffman_output.codedict) {
    uint32_t actual_key =
        canonicalDecode<uint32_t>(code, huffman_output.code_length_counts,
                                   huffman_output.ordered_symbols);
    ASSERT_EQ(actual_key, expected_key);
  }
}

} // namespace caramel::tests