private static void ReadPrecalculatedTimeZone(DateTimeZoneReader reader)
{
int size = reader.ReadCount();
Console.WriteLine($" Precalculated intervals: {size}");
var start = reader.ReadZoneIntervalTransition(null);
for (int i = 0; i < size; i++)
{
var name = reader.ReadString();
var offset = reader.ReadOffset();
var savings = reader.ReadOffset();
var nextStart = reader.ReadZoneIntervalTransition(start);
Console.WriteLine(Invariant($" {start:yyyy-MM-dd'T'HH:mm:ss} - {nextStart:yyyy-MM-dd'T'HH:mm:ss}; wall offset: {offset}; savings: {savings}; name: {name}"));
start = nextStart;
}
if (reader.ReadByte() == 1)
{
Offset standardOffset = reader.ReadOffset();
string standardName = reader.ReadString();
ZoneYearOffset standardYearOffset = ZoneYearOffset.Read(reader);
string daylightName = reader.ReadString();
ZoneYearOffset daylightYearOffset = ZoneYearOffset.Read(reader);
Offset savings = reader.ReadOffset();
Console.WriteLine(" Tail zone:");
Console.WriteLine($" Standard time: {standardYearOffset}; offset: {standardOffset}; name: {standardName}");
Console.WriteLine($" Daylight time: {daylightYearOffset}; offset: {standardOffset + savings}; name: {daylightName}");
}
else
{
Console.WriteLine(" No tail zone");
}
}
public void ReadZoneIntervalTransition_InvalidMarkerValue()
{
byte[] data = new byte[] { 4, 0, 0, 0, 0, 0 }; // Marker value of 4 (followed by 0s to check that it's not just out of data)
var stream = new MemoryStream(data);
var reader = new DateTimeZoneReader(stream, null);
Assert.Throws <InvalidNodaDataException>(() => reader.ReadZoneIntervalTransition(previous: NodaConstants.UnixEpoch));
}
public void ReadZoneIntervalTransition_NoPreviousValue()
{
// Count value between 1 << 7 and 1 << 21 (followed by 0s to check that it's not just out of data)
byte[] data = new byte[] { 0xff, 0x7f, 0, 0, 0, 0 };
var stream = new MemoryStream(data);
var reader = new DateTimeZoneReader(stream, null);
Assert.Throws <InvalidNodaDataException>(() => reader.ReadZoneIntervalTransition(previous: null));
// Validate that when we *do* provide a previous value, it doesn't throw
stream.Position = 0;
reader = new DateTimeZoneReader(stream, null);
reader.ReadZoneIntervalTransition(previous: NodaConstants.UnixEpoch);
}