C++ AutoRequired::GetSize方法代码示例

TEST_F(ContextCreatorTest, ValidateMultipleEviction) {
  AutoCurrentContext()->Initiate();

  // Number of dependent contexts to be created
  const size_t count = 100;

  // Teardown lock, counter, and condition:
  std::mutex lock;
  std::condition_variable cond;
  int counter = count;

  // Obtain creator pointer:
  AutoRequired<Creator> creator;

  // Set up a signal manager at global context scope:
  AutoRequired<GlobalSignal> signal;
  {
    // Array of objects to test destruction on, and corresponding collection of contexts:
    std::shared_ptr<WaitMember> members[count];

    // Create a few contexts:
    for(int i = count; i--;) {
      AutoCreateContext ctxt;
      CurrentContextPusher pshr(ctxt);

      // Trivial validation that the newly created context is an empty context:
      ASSERT_EQ(static_cast<size_t>(0), ctxt->GetMemberCount()) << "A created context was not empty";

      // Add in an object to test asynchronous destruction:
      AutoRequired<WaitMember> obj;
      members[i] = obj;
      ASSERT_EQ(signal.get(), obj->m_signal.get()) << "Dependent context wiring did not correctly match to the enclosing scope";

      // Add a notifier to signal a continue condition when we have everything we need:
      ctxt->AddTeardownListener([&lock, &cond, &counter] {
        (std::lock_guard<std::mutex>)lock,
        counter--,
        cond.notify_all();
      });

      // Kick off the context:
      ctxt->Initiate();
    }

    // Signal all members and then release everything:
    signal->Signal();
  }

  // Wait for all contexts to be destroyed
  std::unique_lock<std::mutex> lk(lock);
  bool wait_status = cond.wait_for(lk, std::chrono::seconds(1), [&counter] {return counter == 0;});
  ASSERT_TRUE(wait_status) << "All teardown listeners didn't trigger, counter still at " << counter;

  // Validate that everything expires:
  ASSERT_EQ(static_cast<size_t>(0), creator->GetSize()) << "Not all contexts were evicted as expected";
}

TEST_F(ContextCreatorTest, VoidKeyType) {
  AutoRequired<VoidCreator> vc;

  {
    std::shared_ptr<CoreContext> ctxt = vc->CreateContext();
    ASSERT_EQ(1UL, vc->GetSize()) << "Requested that a context be created, but the void creator did not have any members";

    ASSERT_EQ(1UL, vc->GetSize()) << "A created context was apparently destroyed after firing bolts";
    ASSERT_EQ(0UL, vc->m_totalDestroyed) << "The void creator received a NotifyContextDestroyed call unexpectedly early";

    vc->Clear(true);

    //Make another one to check about collisions
    std::shared_ptr<CoreContext> ctxt2 = vc->CreateContext();
    ASSERT_EQ(1UL, vc->GetSize()) << "Second void context creation failed!";
  }

  ASSERT_EQ(0UL, vc->GetSize()) << "A void context creator was not correctly updated when its dependent context went out of scope";
  ASSERT_EQ(2UL, vc->m_totalDestroyed) << "The void creator did not receive the expected number of NotifyContextDestroyed calls";
}