Method SetUp

cpp/src/arrow/sparse_tensor_test.cc:234–258

  using c_value_type = typename ValueType::c_type;

  void SetUp() {
    shape_ = {2, 3, 4};
    dim_names_ = {"foo", "bar", "baz"};

    // Dense representation:
    // [
    //   [
    //     1 0 2 0
    //     0 3 0 4
    //     5 0 6 0
    //   ],
    //   [
    //      0 11  0 12
    //     13  0 14  0
    //      0 15  0 16
    //   ]
    // ]
    dense_values_ = {1, 0,  2, 0,  0,  3, 0,  4, 5, 0,  6, 0,
                     0, 11, 0, 12, 13, 0, 14, 0, 0, 15, 0, 16};
    auto dense_data = Buffer::Wrap(dense_values_);
    NumericTensor<ValueType> dense_tensor(dense_data, shape_, {}, dim_names_);
    ASSERT_OK_AND_ASSIGN(sparse_tensor_from_dense_,
                         SparseCOOTensor::Make(
                             dense_tensor, TypeTraits<IndexValueType>::type_singleton()));
  }

 protected:
  using TestSparseTensorBase<ValueType>::shape_;