public void HasMoreData_Buffers()
{
var stream = new MemoryStream(new byte[] { 1, 2 });
var reader = new DateTimeZoneReader(stream, null);
// HasMoreData reads a byte and buffers it
Assert.AreEqual(0, stream.Position);
Assert.IsTrue(reader.HasMoreData);
Assert.AreEqual(1, stream.Position);
Assert.IsTrue(reader.HasMoreData);
Assert.AreEqual(1, stream.Position);
// Consume the buffered byte
Assert.AreEqual((byte)1, reader.ReadByte());
Assert.AreEqual(1, stream.Position);
// HasMoreData reads the next byte
Assert.IsTrue(reader.HasMoreData);
Assert.AreEqual(2, stream.Position);
Assert.IsTrue(reader.HasMoreData);
Assert.AreEqual(2, stream.Position);
// Consume the buffered byte
Assert.AreEqual((byte)2, reader.ReadByte());
Assert.AreEqual(2, stream.Position);
// No more data
Assert.IsFalse(reader.HasMoreData);
}
public void ReadByte_NotEnoughData()
{
byte[] data = new byte[] { 0x05 };
var stream = new MemoryStream(data);
var reader = new DateTimeZoneReader(stream, null);
// Just check we can read the first byte, then fail on the second
Assert.AreEqual((byte)5, reader.ReadByte());
Assert.Throws <InvalidNodaDataException>(() => reader.ReadByte());
}
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");
}
}
private static void ReadTimeZone(DateTimeZoneReader reader)
{
Console.WriteLine($" ID: {reader.ReadString()}");
var type = (DateTimeZoneWriter.DateTimeZoneType)reader.ReadByte();
Console.WriteLine($" Type: {type}");
switch (type)
{
case DateTimeZoneWriter.DateTimeZoneType.Fixed:
ReadFixedTimeZone(reader);
break;
case DateTimeZoneWriter.DateTimeZoneType.Precalculated:
ReadPrecalculatedTimeZone(reader);
break;
default:
Console.WriteLine(" (Unknown time zone type)");
break;
}
}