public void ToString_Test()
{
var datetime = new DateTime(2018, 5, 6, 11, 22, 33, 111, DateTimeKind.Utc);
var utc = new DateTimeUtc(datetime);
Assert.Equal(datetime.ToString(), utc.ToString());
}
public void ToString_FormatTest()
{
var utc = new DateTimeUtc(2018, 5, 6, 11, 22, 33, 111);
Assert.Equal("2018-05-06 11:22:33.111 +00:00", utc.ToString("yyyy-MM-dd HH:mm:ss.fff zzz"));
}