tests/DotNetCommon.Test/Extensions/ObjectTests_To.cs

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using NUnit.Framework;
using Shouldly;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading.Tasks;
using DotNetCommon.Extensions;
using System.Text.Json;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Linq.Expressions;
using Microsoft.VisualBasic;

namespace DotNetCommon.Test.Extensions
{
    [TestFixture]
    public class ObjectTests_To
    {
        /// <summary>
        /// null 或 DBNull 转其他
        /// </summary>
        [Test]
        public void TestNullToOther()
        {
            Person person = null;
            var st = person.To<IPerson>();
            st.ShouldBeNull();
            var st2 = person.To<int?>();
            st.ShouldBeNull();

            DBNull dbnull = DBNull.Value;
            var st3 = dbnull.To<IPerson>();
            st3.ShouldBeNull();
            var st4 = dbnull.To<int?>();
            st4.ShouldBeNull();
        }

        /// <summary>
        /// 测试DateOnly 和 TimeOnly
        /// </summary>
        [Test]
        public void TestDateOnlyTimeOnly()
        {
            //字符串转DateOnly TimeOnly
            "2020-01-01".To<DateOnly>().ShouldBe(new DateOnly(2020, 01, 01));
            "13:01:56.123".To<TimeOnly>().ShouldBe(new TimeOnly(13, 01, 56, 123));
            //DateTime => DateOnly TimeOnly
            "2020-01-01 13:01:56.123".To<DateTime>().To<DateOnly>().ShouldBe(new DateOnly(2020, 01, 01));
            "2020-01-01 13:01:56.123".To<DateTime>().To<TimeOnly>().ShouldBe(new TimeOnly(13, 01, 56, 123));
            //DateTimeOffset => DateOnly TimeOnly
            "2020-01-01 13:01:56.123 +08:00".To<DateTimeOffset>().To<DateOnly>().ShouldBe(new DateOnly(2020, 01, 01));
            "2020-01-01 13:01:56.123 +08:00".To<DateTimeOffset>().To<TimeOnly>().ShouldBe(new TimeOnly(13, 01, 56, 123));
            //TimeSpan => TimeOnly
            "13:01:56.123".To<TimeSpan>().To<TimeOnly>().ShouldBe(new TimeOnly(13, 01, 56, 123));

            //DateOnly TimeOnly => string
            "2020-01-01".To<DateOnly>().To<string>("yyyy-MM-dd").ShouldBe("2020-01-01");
            "13:01:56.123".To<TimeOnly>().To<string>("HH:mm:ss.fff").ShouldBe("13:01:56.123");