Method testDictionary

bolt/vector/tests/DecodedVectorTest.cpp:419–450

  template <typename T>
  void testDictionary(
      vector_size_t size,
      std::function<T(vector_size_t /*index*/)> valueAt,
      const TypePtr& type = CppToType<T>::create()) {
    BufferPtr indices = makeEvenIndices(size);
    auto dictionarySize = size / 2;
    auto flatVector = makeFlatVector<T>(size, valueAt, nullptr, type);

    auto dictionaryVector = std::dynamic_pointer_cast<DictionaryVector<T>>(
        BaseVector::wrapInDictionary(
            BufferPtr(nullptr), indices, dictionarySize, flatVector));
    auto check = [&](const auto& decoded) {
      EXPECT_FALSE(decoded.isConstantMapping());
      EXPECT_FALSE(decoded.isIdentityMapping());
      for (int32_t i = 0; i < dictionaryVector->size(); i++) {
        EXPECT_FALSE(decoded.isNullAt(i)) << "at " << i;
        EXPECT_EQ(decoded.template valueAt<T>(i), dictionaryVector->valueAt(i))
            << "at " << i;
      }
    };

    {
      SelectivityVector selection(dictionarySize);
      DecodedVector decoded(*dictionaryVector, selection);
      check(decoded);
    }

    {
      DecodedVector decoded(*dictionaryVector);
      check(decoded);
    }
  }

  SelectivityVector allSelected_;
  SelectivityVector halfSelected_;