using NUnit.Framework;
using System;
using System.Threading;

namespace ln.threading.tests
{
    public class Tests
    {
        bool setup;

        [SetUp]
        public void Setup()
        {
            if (!setup)
            {
                DynamicThreadPool.DefaultPool.Enqueue(()=>{
                    while (true)
                    {
                        Thread.Sleep(1000);
                        TestContext.Error.WriteLine("SimpleThreadPool: Threads={0} Idle={1} AvgIdle={5} Tasks={2} Min={3} Max={4}", DynamicThreadPool.DefaultPool.CurrentThreads, DynamicThreadPool.DefaultPool.IdleThreads, DynamicThreadPool.DefaultPool.QueuedTasks, DynamicThreadPool.DefaultPool.MinThreads, DynamicThreadPool.DefaultPool.MaxThreads, DynamicThreadPool.DefaultPool.AverageIdleThreads);
                        TestContext.Error.Flush();
                    }
                });
                setup = true;
            }
        }

        [Test]
        public void Test0_SimpleThreadPool()
        {
            bool success = false;
            DynamicThreadPool.DefaultPool.Enqueue(()=>{success=true;});
            Thread.Sleep(TimeSpan.FromSeconds(1));
            Assert.IsTrue(success);

            for (int n=0;n<32;n++)
                DynamicThreadPool.DefaultPool.Enqueue(CreateTask(n));

            Thread.Sleep(3200);

            Assert.AreEqual(0, DynamicThreadPool.DefaultPool.QueuedTasks);
        }

        public Action CreateTask(int n)
        {
            return ()=>{
                    TestContext.Error.WriteLine("STP_task_{0}", n);
                    TestContext.Error.Flush();
                    Thread.Sleep(100 * n);
                };
        }

        [Test]
        public void Test1()
        {
            int a = 0;

            PoolTimer timer = new PoolTimer(100, ()=>{
                lock (this)
                {
                    a++;
                    TestContext.Error.WriteLine("timer elapsed: {0}", a);
                    TestContext.Error.Flush();
                }
            });

            timer.Start();
            Thread.Sleep(TimeSpan.FromSeconds(2.05));
            timer.Stop();

            Assert.AreEqual(20, a);

            Assert.Pass();
        }

        [Test]
        public void ZZZ_Waiter()
        {
            Thread.Sleep(30000);
        }
        [Test]
        public void AAA_Waiter()
        {
            Thread.Sleep(5000);
        }
    }
}