調用異步服務時的逾時處理

主線程調用異步服務後，通過設定主線程的等待時間來進行逾時處理。

Demo如下：

using System.Threading;

namespace MyCSharp.ExternalService
{
    public class DemoService
    {
        /// 
        /// 服務響應
        /// 
        public void Response()
        {
            Thread.Sleep(100);
        }
    }
}using System;
using System.Threading.Tasks;
using MyCSharp.ExternalService;

namespace MyCSharp.Grammas
{
    public class AsyncTask
    {
        private readonly int _timeout;

        private AsyncTask()
        {
        }

        /// 
        /// 構造函數
        /// 
        /// 
逾時時間
        public AsyncTask(Int32 timeout = 30000)
        {
            _timeout = timeout;
        }

        /// 
        /// 執行任務
        /// 
        /// 
   
        public bool Execute()
        {
            var task = Task.Factory.StartNew(this.CallExternalSevice);
            return task.Wait(_timeout);

        }

        /// 
        /// 調用外部服務
        /// 
        private void CallExternalSevice()
        {
            new DemoService().Response();
        }


    }
}
using Microsoft.VisualStudio.TestTools.UnitTesting;
using MyCSharp.Grammas;

namespace MyCSharp.FunctionTests
{
    [TestClass]
    public class AsyncTaskTest
    {
        [TestMethod]
        public void ExecuteTest_LessThanResponseTime_TimeOut()
        {
            var result = new AsyncTask(50).Execute();
            Assert.IsFalse(result);
        }

        [TestMethod]
        public void ExecuteTest_EqualsResponseTime_Success()
        {
            var result = new AsyncTask(100).Execute();
            Assert.IsFalse(result);
        }

        [TestMethod]
        public void ExecuteTest_MoreThanResponseTime_Success()
        {
            var result = new AsyncTask(120).Execute();
            Assert.IsTrue(result);
        }
    }
}