public void FetchPageWithHalfSize_Test()
{
using (var stream = new MemoryStream(new byte[4096 + 1024]))
{
var reader = new PagedStreamReader(stream, 4096);
var page = reader.FetchPage(0);
Assert.AreEqual(0, page.PageIndex);
Assert.AreEqual(4096, page.Data.Length);
page = reader.FetchPage(1);
Assert.AreEqual(1, page.PageIndex);
Assert.AreEqual(1024, page.Data.Length);
}
}
public void LogRowDataPoint()
{
const string row = "2011-01-24 06:29:46.687|Core.State.StartTime|Core|181188615|356.3245\r\n";
string itemID;
LogRowIndex index;
char[] ptr = row.ToCharArray();
LogStudio.Data.LogFileParser.ParseRow(ptr, row.Length, 0, '|', out index, out itemID);
LogRowDataPoint data;
using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(row)))
{
var pagedReader = new PagedStreamReader(stream, 4096);
data = LogRowDataFactory.CreateDataPoint(pagedReader, index);
}
Assert.AreEqual(DateTime.Parse("2011-01-24 06:29:46.687"), data.TimeStamp);
Assert.AreEqual(356.3245, data.Value);
}
public void ReadPageAndCompareContentWithSource_PageSize_300_Test()
{
var source = Enumerable.Range(0, 500).Select(p => (byte)(p % 256)).ToArray();
using (var stream = new MemoryStream(source))
{
var reader = new PagedStreamReader(stream, 300);
var buffer = new byte[137];
var read = reader.Read(buffer, 0, buffer.Length);
Assert.AreEqual(buffer.Length, read);
Assert.That(buffer.Compare(0, source, 0, buffer.Length));
read = reader.Read(buffer, 480, buffer.Length);
Assert.AreEqual(20, read);
Assert.That(buffer.Compare(0, source, 480, read));
}
}
public void IncreasingStreamLength_PageSize_300_Test()
{
var source = Enumerable.Range(0, 500).Select(p => (byte)(p % 256)).ToArray();
using (var stream = new MemoryStream())
{
stream.Write(source, 0, source.Length);
var reader = new PagedStreamReader(stream, 300);
byte[] buffer = new byte[500];
int read = reader.Read(buffer, 0, buffer.Length);
var source2 = Enumerable.Range(0, 37).Select(p => (byte)(p % 256)).ToArray();
stream.Write(source2, 0, source2.Length);
read = reader.Read(buffer, read, buffer.Length);
Assert.AreEqual(37, read);
Assert.That(buffer.Compare(0, source2, 0, read));
}
}