CryptoExchange.Net/CryptoExchange.Net.UnitTests/ConverterTests.cs

using CryptoExchange.Net.Converters;
using Newtonsoft.Json;
using NUnit.Framework;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CryptoExchange.Net.UnitTests
{
    [TestFixture()]
    public class ConverterTests
    {
        [TestCase("2021-05-12")]
        [TestCase("20210512")]
        [TestCase("210512")]
        [TestCase("1620777600.000")]
        [TestCase("1620777600000")]
        [TestCase("2021-05-12T00:00:00.000Z")]
        [TestCase("", true)]
        [TestCase("  ", true)]
        public void TestDateTimeConverterString(string input, bool expectNull = false)
        {
            var output = JsonConvert.DeserializeObject<TimeObject>($"{{ \"time\": \"{input}\" }}");
            Assert.AreEqual(output.Time, expectNull ? null: new DateTime(2021, 05, 12, 0, 0, 0, DateTimeKind.Utc));
        }

        [TestCase(1620777600.000)]
        [TestCase(1620777600000d)]
        public void TestDateTimeConverterDouble(double input)
        {
            var output = JsonConvert.DeserializeObject<TimeObject>($"{{ \"time\": {input} }}");
            Assert.AreEqual(output.Time, new DateTime(2021, 05, 12, 0, 0, 0, DateTimeKind.Utc));
        }

        [TestCase(1620777600)]
        [TestCase(1620777600000)]
        [TestCase(1620777600000000)]
        [TestCase(1620777600000000000)]
        [TestCase(0, true)]
        public void TestDateTimeConverterLong(long input, bool expectNull = false)
        {
            var output = JsonConvert.DeserializeObject<TimeObject>($"{{ \"time\": {input} }}");
            Assert.AreEqual(output.Time, expectNull ? null : new DateTime(2021, 05, 12, 0, 0, 0, DateTimeKind.Utc));
        }

        [TestCase()]
        public void TestDateTimeConverterNull()
        {
            var output = JsonConvert.DeserializeObject<TimeObject>($"{{ \"time\": null }}");
            Assert.AreEqual(output.Time, null);
        }
    }

    public class TimeObject
    {
        [JsonConverter(typeof(DateTimeConverter))]
        public DateTime? Time { get; set; }
    }
}