using System;
using Util.Helpers;
using Xunit;

namespace Util.Tests.Helpers {
    /// <summary>
    /// 时间操作测试
    /// </summary>
    public class TimeTest : IDisposable {
        /// <summary>
        /// 测试清理
        /// </summary>
        public void Dispose() {
            Time.Reset();
        }

        /// <summary>
        /// 日期字符串,"2012-01-02"
        /// </summary>
        public const string DateString1 = "2012-01-02";

        /// <summary>
        /// 日期,2012-01-02
        /// </summary>
        public static readonly DateTime Date1 = DateTime.Parse( DateString1 );

        /// <summary>
        /// 日期字符串,"2012-11-12"
        /// </summary>
        public const string DateString2 = "2012-11-12";

        /// <summary>
        /// 日期时间字符串,"2012-01-02 01:02:03"
        /// </summary>
        public const string DatetimeString1 = "2012-01-02 01:02:03";

        /// <summary>
        /// 日期时间,2012-01-02 01:02:03
        /// </summary>
        public static readonly DateTime Datetime1 = DateTime.Parse( DatetimeString1 );

        /// <summary>
        /// 日期时间字符串,"2012-11-12 13:04:05"
        /// </summary>
        public const string DatetimeString2 = "2012-11-12 13:04:05";

        /// <summary>
        /// 日期时间,2012-11-12 13:04:05
        /// </summary>
        public static readonly DateTime Datetime2 = DateTime.Parse( DatetimeString2 );

        /// <summary>
        /// 测试设置时间
        /// </summary>
        [Fact]
        public void TestSetTime() {
            Time.SetTime( Datetime1 );
            Assert.Equal( Datetime1, Time.GetDateTime() );
            Time.Reset();
            Assert.NotEqual( Datetime1, Time.GetDateTime() );
        }

        /// <summary>
        /// 测试获取Unix时间戳
        /// </summary>
        [Fact]
        public void TestGetUnixTimestamp() {
            Assert.Equal( 15132, Time.GetUnixTimestamp( new DateTime( 1970, 01, 01, 12, 12, 12 ) ) );
            Assert.Equal( 976594332, Time.GetUnixTimestamp( new DateTime( 2000, 12, 12, 12, 12, 12 ) ) );
            Assert.Equal( 1392668699, Time.GetUnixTimestamp( new DateTime( 2014, 02, 18, 04, 24, 59 ) ) );
        }

        /// <summary>
        /// 测试从Unix时间戳获取时间
        /// </summary>
        [Fact]
        public void TestGetTimeFromUnixTimestamp() {
            Assert.Equal( new DateTime( 1970, 01, 01, 12, 12, 12 ), Time.GetTimeFromUnixTimestamp( 15132 ) );
            Assert.Equal( new DateTime( 2000, 12, 12, 12, 12, 12 ), Time.GetTimeFromUnixTimestamp( 976594332 ) );
            Assert.Equal( new DateTime( 2014, 02, 18, 04, 24, 59 ), Time.GetTimeFromUnixTimestamp( 1392668699 ) );
        }
    }
}