#include "test.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define TEST(c)                                                                \
  do {                                                                         \
    errno = 0;                                                                 \
    if (!(c))                                                                  \
      t_error("%s failed (errno = %d)\n", #c, errno);                          \
  } while (0)

int main(void) {
  // closing a valid fd returns 0
  int fd;
  TEST((fd = open("/a", O_RDWR | O_CREAT, 0755)) > 2);
  TEST(close(fd) == 0);

  // closing an invalid fd return -1
  TEST(close(fd) == -1 && errno == EBADF);

  // can close stdio
  TEST(close(0) == 0);

  return t_status;
}
