public void StorageStream_can_read_overlaping_byte_ranges_from_last_page()
{
var buffer = new byte[StorageConstants.MaxPageSize];
new Random().NextBytes(buffer);
using (var stream = StorageStream.CreatingNewAndWritting(
transactionalStorage, new MockIndexStorage(),
new StorageOperationsTask(transactionalStorage, new MockIndexStorage(), new EmptyNotificationsPublisher()),
"file", EmptyETagMetadata))
{
stream.Write(buffer, 0, StorageConstants.MaxPageSize);
}
using (var stream = StorageStream.Reading(transactionalStorage, "file"))
{
var readBuffer = new byte[10];
stream.Seek(StorageConstants.MaxPageSize - 10, SeekOrigin.Begin);
stream.Read(readBuffer, 0, 10); // read last 10 bytes
var subBuffer = buffer.ToList().Skip(StorageConstants.MaxPageSize - 10).Take(10).ToArray();
for (int i = 0; i < 10; i++)
{
Assert.Equal(subBuffer[i], readBuffer[i]);
}
readBuffer = new byte[5];
stream.Seek(StorageConstants.MaxPageSize - 5, SeekOrigin.Begin);
stream.Read(readBuffer, 0, 5); // read last 5 bytes - note that they were read last time as well
subBuffer = buffer.ToList().Skip(StorageConstants.MaxPageSize - 5).Take(5).ToArray();
for (int i = 0; i < 5; i++)
{
Assert.Equal(subBuffer[i], readBuffer[i]);
}
}
}
public void StorageStream_should_write_to_storage_by_64kB_pages()
{
using (var stream = StorageStream.CreatingNewAndWritting(fs, "file", new RavenJObject()))
{
var buffer = new byte[StorageConstants.MaxPageSize];
new Random().NextBytes(buffer);
stream.Write(buffer, 0, 32768);
stream.Write(buffer, 32767, 32768);
stream.Write(buffer, 0, 1);
}
FileAndPagesInformation fileAndPages = null;
transactionalStorage.Batch(accessor => fileAndPages = accessor.GetFile("file", 0, 10));
Assert.Equal(2, fileAndPages.Pages.Count);
Assert.Equal(StorageConstants.MaxPageSize, fileAndPages.Pages[0].Size);
Assert.Equal(1, fileAndPages.Pages[1].Size);
}
public void StorageStream_can_read_overlaping_byte_ranges_from_last_page()
{
var buffer = new byte[StorageConstants.MaxPageSize];
new Random().NextBytes(buffer);
using (var stream = StorageStream.CreatingNewAndWritting(fs, "file", new RavenJObject()))
{
stream.Write(buffer, 0, StorageConstants.MaxPageSize);
}
using (var stream = StorageStream.Reading(fs.Storage, "file"))
{
var readBuffer = new byte[10];
stream.Seek(StorageConstants.MaxPageSize - 10, SeekOrigin.Begin);
stream.Read(readBuffer, 0, 10); // read last 10 bytes
var subBuffer = buffer.ToList().Skip(StorageConstants.MaxPageSize - 10).Take(10).ToArray();
for (int i = 0; i < 10; i++)
{
Assert.Equal(subBuffer[i], readBuffer[i]);
}
readBuffer = new byte[5];
stream.Seek(StorageConstants.MaxPageSize - 5, SeekOrigin.Begin);
stream.Read(readBuffer, 0, 5); // read last 5 bytes - note that they were read last time as well
subBuffer = buffer.ToList().Skip(StorageConstants.MaxPageSize - 5).Take(5).ToArray();
for (int i = 0; i < 5; i++)
{
Assert.Equal(subBuffer[i], readBuffer[i]);
}
}
}
public void StorageStream_should_write_to_storage_by_64kB_pages()
{
using (var stream = StorageStream.CreatingNewAndWritting(
transactionalStorage, new MockIndexStorage(),
new StorageOperationsTask(transactionalStorage, new MockIndexStorage(), new EmptyNotificationsPublisher()),
"file", EmptyETagMetadata))
{
var buffer = new byte[StorageConstants.MaxPageSize];
new Random().NextBytes(buffer);
stream.Write(buffer, 0, 32768);
stream.Write(buffer, 32767, 32768);
stream.Write(buffer, 0, 1);
}
FileAndPagesInformation fileAndPages = null;
transactionalStorage.Batch(accessor => fileAndPages = accessor.GetFile("file", 0, 10));
Assert.Equal(2, fileAndPages.Pages.Count);
Assert.Equal(StorageConstants.MaxPageSize, fileAndPages.Pages[0].Size);
Assert.Equal(1, fileAndPages.Pages[1].Size);
}
