add Extentions for UnixTimeStamp.

src/JwtDnx/JwtDnxExtentions.cs

@@ -0,0 +1,30 @@
+using System;
+namespace JwtDnx
+{
+    public static class JwtDnxExtentions
+    {
+        private static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+
+        /// <summary>
+        /// Convert from .NET DateTime to UnixTimeStamp.
+        /// (FYI in NET4.6 -> https://msdn.microsoft.com/en-us/library/system.datetimeoffset.tounixtimeseconds.aspx)
+        /// </summary>
+        /// <param name="dateTimeUtc">DateTimeUtc</param>
+        /// <returns>UnixTimeStamp</returns>
+        public static long ToUnixTimeSeconds(this DateTime dateTimeUtc)
+        {
+            return (long)Math.Round((dateTimeUtc.ToUniversalTime() - UnixEpoch).TotalSeconds);
+        }
+
+        /// <summary>
+        /// Convert from UnixTimeStamp to .NET DateTime.
+        /// (FYI in NET4.6 -> https://msdn.microsoft.com/en-us/library/system.datetimeoffset.tounixtimeseconds.aspx)
+        /// </summary>
+        /// <param name="unixTimeStamp">UnixTimeStamp</param>
+        /// <returns>DateTime by Utc</returns>
+        public static DateTime ToDateTiemUtc(this long unixTimeStamp)
+        {
+            return UnixEpoch.AddSeconds(unixTimeStamp);
+        }
+    }
+}

test/JwtDnxTests/JwtDnxExtentionsTests.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading.Tasks;
+using JwtDnx;
+using Xunit;
+
+namespace JwtDnxTests
+{
+    public class ExtentionsTests
+    {
+
+        private static DateTime _netDateTimeUtc = new DateTime(2038, 01, 19, 03, 14, 07, DateTimeKind.Utc);
+        private static long _unixTimestamp = 2147483647L;
+
+        [Fact]
+        public void Should_Convert_from_DateTime_to_UnixTime()
+        {
+            long result = _netDateTimeUtc.ToUnixTimeSeconds();
+            Assert.Equal(result, _unixTimestamp);
+        }
+
+        [Fact]
+        public void Should_Convert_from_UnixTime_to_DateTime()
+        {
+            DateTime result = _unixTimestamp.ToDateTiemUtc();
+            Assert.Equal(result, _netDateTimeUtc);
+        }
+    }
+}

test/JwtDnxTests/project.json

@@ -1,13 +1,8 @@
 {
   "version": "1.0.0-*",
-  "description": "JwtDnxTests Class Library",
-  "authors": [ "ax" ],
-  "tags": [ "" ],
-  "projectUrl": "",
-  "licenseUrl": "",
   "dependencies": {
     "FluentAssertions": "4.1.1",
-    "JwtDnx": "1.0.0-*",
+    "JwtDnx": "1.0.1-*",
     "xunit": "2.1.0",
     "xunit.runner.dnx": "2.1.0-rc1-build204"
   },