text: /* Copyright (c) 2010-2018, The Tor Project, Inc. */
  /* See LICENSE for licensing information */
  
  #define UTIL_PROCESS_PRIVATE
  #include "orconfig.h"
  #include "core/or/or.h"
  
  #include "test/test.h"
  
  #include "lib/process/waitpid.h"
  
  #include "test/log_test_helpers.h"
  
  #ifndef _WIN32
  #define NS_MODULE util_process
  
  static void
  temp_callback(int r, void *s)
  {
    (void)r;
    (void)s;
  }
  
  static void
  test_util_process_set_waitpid_callback(void *ignored)
  {
    (void)ignored;
    waitpid_callback_t *res1 = NULL, *res2 = NULL;
    setup_full_capture_of_logs(LOG_WARN);
    pid_t pid = (pid_t)42;
  
    res1 = set_waitpid_callback(pid, temp_callback, NULL);
    tt_assert(res1);
  
    res2 = set_waitpid_callback(pid, temp_callback, NULL);
    tt_assert(res2);
    expect_single_log_msg(
              "Replaced a waitpid monitor on pid 42. That should be "
              "impossible.\n");
  
   done:
    teardown_capture_of_logs();
    clear_waitpid_callback(res1);
    clear_waitpid_callback(res2);
  }
  
  static void
  test_util_process_clear_waitpid_callback(void *ignored)
  {
    (void)ignored;
    waitpid_callback_t *res;
    setup_capture_of_logs(LOG_WARN);
    pid_t pid = (pid_t)43;
  
    clear_waitpid_callback(NULL);
  
    res = set_waitpid_callback(pid, temp_callback, NULL);
    clear_waitpid_callback(res);
    expect_no_log_entry();
  
  #if 0
    /* No.  This is use-after-free.  We don't _do_ that. XXXX */
    clear_waitpid_callback(res);
    expect_log_msg("Couldn't remove waitpid monitor for pid 43.\n");
  #endif
  
   done:
    teardown_capture_of_logs();
  }
  #endif /* !defined(_WIN32) */
  
  #ifndef _WIN32
  #define TEST(name) { #name, test_util_process_##name, 0, NULL, NULL }
  #else
  #define TEST(name) { #name, NULL, TT_SKIP, NULL, NULL }
  #endif
  
  struct testcase_t util_process_tests[] = {
    TEST(set_waitpid_callback),
    TEST(clear_waitpid_callback),
    END_OF_TESTCASES
  };
  
  