public void TestReadWriteWithOffset()
{
MemoryStream mainStream = new MemoryStream();
MemoryStream walStream = new MemoryStream();
using (AtomicStream stream = new AtomicStream(mainStream, walStream))
{
stream.Write(new byte[] { 1, 2, 3, 4, 5 }, 2, 2);
stream.Commit();
byte[] buffer = new byte[4];
stream.Position = 0;
Assert.That(stream.Read(buffer, 1, 3), Is.EqualTo(2));
Assert.That(buffer, Is.EqualTo(new byte[] { 0, 3, 4, 0 }));
}
}
public void TestOverlappingWrite()
{
MemoryStream mainStream = new MemoryStream();
MemoryStream walStream = new MemoryStream();
using (AtomicStream stream = new AtomicStream(mainStream, walStream))
{
stream.Write(new byte[] { 1, 2, 3, 4 }, 0, 4);
stream.Position = 2;
stream.Write(new byte[] { 5, 6, 7, 8 }, 0, 4);
stream.Commit();
byte[] buffer = new byte[7];
stream.Position = 0;
Assert.That(stream.Read(buffer, 0, 7), Is.EqualTo(6));
Assert.That(buffer, Is.EqualTo(new byte[] { 1, 2, 5, 6, 7, 8, 0 }));
}
}
public void TestSequentialRead()
{
MemoryStream mainStream = new MemoryStream();
MemoryStream walStream = new MemoryStream();
using (AtomicStream stream = new AtomicStream(mainStream, walStream))
{
stream.Write(new byte[] {1, 2, 3, 4, 5}, 0, 5);
stream.Commit();
byte[] buffer = new byte[3];
stream.Position = 0;
Assert.That(stream.Read(buffer, 0, 3), Is.EqualTo(3));
Assert.That(buffer, Is.EqualTo(new byte[] {1, 2, 3}));
Assert.That(stream.Read(buffer, 0, 3), Is.EqualTo(2));
Assert.That(buffer, Is.EqualTo(new byte[] {4, 5, 3}));
Assert.That(stream.Read(buffer, 0, 3), Is.EqualTo(0));
Assert.That(buffer, Is.EqualTo(new byte[] {4, 5, 3}));
}
}
public void TestSimple()
{
MemoryStream mainStream = new MemoryStream();
MemoryStream walStream = new MemoryStream();
using (AtomicStream stream = new AtomicStream(mainStream, walStream))
{
stream.Write(new byte[] {1}, 0, 1);
stream.Commit();
Assert.That(mainStream.ToArray(), Is.EqualTo(new byte[] {1}));
stream.Write(new byte[] {2}, 0, 1);
stream.Commit();
Assert.That(mainStream.ToArray(), Is.EqualTo(new byte[] {1, 2}));
stream.Position = 0;
stream.Write(new byte[] {3}, 0, 1);
stream.Commit();
Assert.That(mainStream.ToArray(), Is.EqualTo(new byte[] {3, 2}));
}
}
