using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace Falcon.SugarApi.Test
{
    /// <summary>
    /// 任务防抖测试
    /// </summary>
    [TestClass()]
    public class ThreadSafeFixedSizeQueueTest
    {
        /// <summary>
        /// 出入数据测试
        /// </summary>
        [TestMethod()]
        public void TestInOut() {
            var queue = new ThreadSafeFixedSizeQueue<int>(3);

            var i = queue.Dequeue();
            Assert.IsTrue(i == 0);

            queue.Enqueue(1);
            Assert.IsTrue(queue.Count == 1);

            i = queue.Dequeue();
            Assert.IsTrue(i == 1);


            queue.Enqueue(1);
            queue.Enqueue(2);
            queue.Enqueue(3);
            queue.Enqueue(4);
            queue.Enqueue(5);
            Assert.IsTrue(queue.Count == 3);
            i = queue.Dequeue();
            Assert.IsTrue(i == 3);
            i = queue.Dequeue();
            Assert.IsTrue(i == 4);
            i = queue.Dequeue();
            Assert.IsTrue(i == 5);
            Assert.IsTrue(queue.Count == 0);

            queue.Enqueue(1);
            queue.Enqueue(2);
            queue.Enqueue(3);
            queue.Clear();
            Assert.IsTrue(queue.Count == 0);
            i = queue.Dequeue();
            Assert.IsTrue(i == 0);

            queue.Enqueue(1);
            queue.Enqueue(2);
            queue.Enqueue(3);
            int id = 1;
            while(queue.TryDequeue(out i)) {
                Assert.IsTrue(i == id++);
            }
            Assert.IsTrue(queue.Count == 0);
        }
    }
}