text: /*
   * Copyright (c) 2014 DeNA Co., Ltd.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to
   * deal in the Software without restriction, including without limitation the
   * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   * sell copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   * IN THE SOFTWARE.
   */
  #include <stdarg.h>
  #include <stdio.h>
  #include <string.h>
  #include "picotest.h"
  
  struct test_t {
      int num_tests;
      int failed;
  };
  struct test_t main_tests, *cur_tests = &main_tests;
  static int test_level = 0;
  
  static void indent(void)
  {
      int i;
      for (i = 0; i != test_level; ++i)
          printf("    ");
  }
  
  __attribute__((format (printf, 1, 2)))
  void note(const char *fmt, ...)
  {
      va_list arg;
  
      indent();
      printf("# ");
  
      va_start(arg, fmt);
      vprintf(fmt, arg);
      va_end(arg);
  
      printf("\n");
  }
  
  __attribute__((format (printf, 2, 3)))
  void _ok(int cond, const char *fmt, ...)
  {
      va_list arg;
  
      if (! cond)
          cur_tests->failed = 1;
      indent();
  
      printf("%s %d - ", cond ? "ok" : "not ok", ++cur_tests->num_tests);
      va_start(arg, fmt);
      vprintf(fmt, arg);
      va_end(arg);
  
      printf("\n");
  }
  
  int done_testing(void)
  {
      indent();
      printf("1..%d\n", cur_tests->num_tests);
      return cur_tests->failed;
  }
  
  void subtest(const char *name, void (*cb)(void))
  {
      struct test_t test = {}, *parent_tests;
  
      parent_tests = cur_tests;
      cur_tests = &test;
      ++test_level;
  
      note("Subtest: %s", name);
  
      cb();
  
      done_testing();
  
      --test_level;
      cur_tests = parent_tests;
      if (test.failed)
          cur_tests->failed = 1;
      _ok(! test.failed, "%s", name);
  }
  