public void ConvertsTimeFromUtc_ToUtc()
{
// prepare
var dateFrom = new DateTime(1234, 5, 6, 7, 8, 9, 123, DateTimeKind.Utc);
var tzTo = TimeZoneInfo.FindSystemTimeZoneById("UTC");
// execute
var result = SrkTimeZoneInfoExtensions.ConvertFromUtc(tzTo, dateFrom);
// verify
Assert.AreEqual(dateFrom.Year, result.Year);
Assert.AreEqual(dateFrom.Month, result.Month);
Assert.AreEqual(dateFrom.Day, result.Day);
Assert.AreEqual(dateFrom.Hour, result.Hour);
Assert.AreEqual(dateFrom.Minute, result.Minute);
Assert.AreEqual(dateFrom.Second, result.Second);
Assert.AreEqual(dateFrom.Millisecond, result.Millisecond);
Assert.AreEqual(DateTimeKind.Utc, result.Kind);
}
public void ConvertsTimeFromUnspecified()
{
// prepare
////var tzFrom = TimeZoneInfo.FindSystemTimeZoneById("Romance Standard Time"); // assume Unknown is UTC
var dateFrom = new DateTime(1234, 5, 6, 7, 8, 9, 123, DateTimeKind.Unspecified);
var tzTo = TimeZoneInfo.FindSystemTimeZoneById("Romance Standard Time");
// execute
var result = SrkTimeZoneInfoExtensions.ConvertFromUtc(tzTo, dateFrom);
// verify
Assert.AreEqual(dateFrom.Year, result.Year);
Assert.AreEqual(dateFrom.Month, result.Month);
Assert.AreEqual(dateFrom.Day, result.Day);
Assert.AreEqual(dateFrom.Hour + 2, result.Hour);
Assert.AreEqual(dateFrom.Minute, result.Minute);
Assert.AreEqual(dateFrom.Second, result.Second);
Assert.AreEqual(dateFrom.Millisecond, result.Millisecond);
Assert.AreEqual(DateTimeKind.Unspecified, result.Kind);
}
public void ConvertsTimeFromLocal_ToUtc()
{
// prepare
var tzFrom = TimeZoneInfo.Local;
var dateFrom = new DateTime(1234, 5, 6, 7, 8, 9, 123, DateTimeKind.Local);
var tzTo = TimeZoneInfo.FindSystemTimeZoneById("UTC");
// execute
var result = SrkTimeZoneInfoExtensions.ConvertFromUtc(tzTo, dateFrom);
// verify
Assert.AreEqual(dateFrom.Year, result.Year);
Assert.AreEqual(dateFrom.Month, result.Month);
Assert.AreEqual(dateFrom.Day, result.Day);
var expectedHour = dateFrom.Hour - tzFrom.GetUtcOffset(dateFrom).TotalHours + tzTo.GetUtcOffset(dateFrom).TotalHours;
Assert.AreEqual(expectedHour, result.Hour);
Assert.AreEqual(dateFrom.Minute, result.Minute);
Assert.AreEqual(dateFrom.Second, result.Second);
Assert.AreEqual(dateFrom.Millisecond, result.Millisecond);
Assert.AreEqual(DateTimeKind.Utc, result.Kind);
}