Method SquareNoncopyable

test/te.cpp:172–172

struct SquareNoncopyable {
  SquareNoncopyable() = default;
  SquareNoncopyable(const SquareNoncopyable &) = delete;
  SquareNoncopyable &operator=(const SquareNoncopyable &) = delete;
  SquareNoncopyable(SquareNoncopyable &&) = default;