public void InfiniteFileInMemory()
{
using (var infFile = new InfiniteFileWriter(nameof(this.InfiniteFileInMemory), 128, 0))
{
using (var infFile2 = new InfiniteFileReader(nameof(this.InfiniteFileInMemory)))
{
byte[] bytes = new byte[100];
byte val = 100;
int pos = 10;
for (int i = 0; i < 4; i++)
{
bytes[pos] = val;
infFile.ReserveBlock(bytes.Length);
infFile.WriteToBlock(bytes);
infFile.CommitBlock();
infFile2.MoveNext();
infFile2.ReadBlock(ref bytes);
Assert.AreEqual(0, bytes[0]);
Assert.AreEqual(val, bytes[pos]);
val++;
}
}
}
}
public void InfiniteFileTruncation()
{
const int extentSize = 10 * 1024;
using (var infFile = new InfiniteFileWriter(this.path, nameof(this.InfiniteFileTest), extentSize))
{
// write less data than would fill an extent
byte[] bytes = new byte[1024];
infFile.ReserveBlock(bytes.Length);
infFile.WriteToBlock(bytes);
infFile.CommitBlock();
}
// get the full pathname of the first (and only) extent file
string extentPath = Path.Combine(this.path, string.Format("{0}_{1:000000}.psi", nameof(this.InfiniteFileTest), 0));
// verify that the extent file has been truncated (to the nearest 4096 byte block)
Assert.AreEqual(4096, new FileInfo(extentPath).Length);
}
public void InfiniteFileTest()
{
const int extentSize = 10 * 1024;
const int messagesPerExtent = 3;
const int messageSize = (int)(extentSize * 0.9) / messagesPerExtent; // not a multiple of 4k and not a divisor of initial file size, to force truncation
const int extentCount = 5;
const int iterations = messagesPerExtent * extentCount;
using (var infFile = new InfiniteFileWriter(this.path, nameof(this.InfiniteFileTest), extentSize))
{
byte[] bytes = new byte[messageSize];
byte val = 100;
for (int i = 0; i < iterations; i++)
{
bytes[messageSize - 1] = val;
val++;
infFile.ReserveBlock(bytes.Length);
infFile.WriteToBlock(bytes);
infFile.CommitBlock();
}
}
using (var infFile = new InfiniteFileReader(this.path, nameof(this.InfiniteFileTest)))
{
byte[] bytes = new byte[messageSize];
byte val = 100;
for (int i = 0; i < iterations; i++)
{
infFile.MoveNext();
infFile.ReadBlock(ref bytes);
Assert.AreEqual(0, bytes[0]);
Assert.AreEqual(val, bytes[messageSize - 1]);
val++;
}
}
}
