text: #pragma once
  
  #define CHECK_OK(expression)                       \
    do {                                             \
      auto status = (expression);                    \
      if (!status.ok()) {                            \
        std::cerr << status.ToString() << std::endl; \
        abort();                                     \
      }                                              \
    } while (0)
  
  #define CHECK_EQ(a, b)                                                      \
    if (a != b) {                                                             \
      std::cerr << "(" << #a << "=" << a << ") != (" << #b << "=" << b << ")" \
                << std::endl;                                                 \
      abort();                                                                \
    }
  
  #define CHECK_TRUE(cond)                                      \
    if (!(cond)) {                                              \
      std::cerr << "\"" << #cond << "\" is false" << std::endl; \
      abort();                                                  \
    }
  