base/WorkerThread_unittest.cpp

// Copyright 2022 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <gtest/gtest.h>

#include "aemu/base/threads/WorkerThread.h"

#include <chrono>

namespace android {
namespace base {
namespace {
TEST(WorkerThread, TheReturnedFutureFromEnqueueShouldBeReadyWhenTheWorkerStops) {
    struct Item {};
    WorkerThread<Item> worker([](Item&&) { return WorkerProcessingResult::Stop; });
    worker.start();
    worker.enqueue(Item{}).wait();
    EXPECT_EQ(worker.enqueue(Item{}).wait_for(std::chrono::milliseconds(500)),
              std::future_status::ready);
}

TEST(WorkerThread, TheReturnedFutureFromEnqueueShouldBeReadyBeforeTheWorkerStarts) {
    struct Item {};
    WorkerThread<Item> worker([](Item&&) { return WorkerProcessingResult::Stop; });
    EXPECT_EQ(worker.enqueue(Item{}).wait_for(std::chrono::milliseconds(0)),
              std::future_status::ready);
}
}  // namespace
}  // namespace base
}  // namespace android