Function stress_test

tests/system_test/stress_test.cpp:210–253

* @brief Stress system test entry point */

 * @brief Stress system test entry point
 */
auto stress_test() -> bool {
  klog::Info("===== Stress System Test Start =====");

  g_tests_completed = 0;
  g_tests_failed = 0;

  auto& tm = TaskManagerSingleton::instance();

  // Sub-test 1: Many tasks
  auto t1 = kstd::make_unique<TaskControlBlock>("TestManyTasks", 10,
                                                test_many_tasks, nullptr);
  tm.AddTask(std::move(t1));

  // Sub-test 2: Wait non-child
  auto t2 = kstd::make_unique<TaskControlBlock>("TestWaitNonChild", 10,
                                                test_wait_non_child, nullptr);
  tm.AddTask(std::move(t2));

  // Sub-test 3: Rapid create/exit
  auto t3 = kstd::make_unique<TaskControlBlock>(
      "TestRapidCreateExit", 10, test_rapid_create_exit, nullptr);
  tm.AddTask(std::move(t3));

  // Wait for all 3 sub-tests to complete (timeout: 400 * 50ms = 20s)
  constexpr int kExpectedTests = 3;
  int timeout = 400;
  while (timeout > 0) {
    (void)sys_sleep(50);
    if (g_tests_completed.load() >= kExpectedTests) {
      break;
    }
    timeout--;
  }

  klog::Info("Stress System Test: completed={}, failed={}",
             g_tests_completed.load(), g_tests_failed.load());

  EXPECT_EQ(g_tests_completed.load(), kExpectedTests,
            "All 3 stress sub-tests completed");
  EXPECT_EQ(g_tests_failed.load(), 0, "No stress sub-tests failed");

  klog::Info("===== Stress System Test End =====");
  return true;
}