public static void ReadWrite()
{
var length = 1000;
using (var manager = new UmsManager(FileAccess.ReadWrite, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
Assert.Equal(stream.Length, length);
var bytes = ArrayHelpers.CreateByteArray(length);
var copy = bytes.Copy();
stream.Write(copy, 0, length);
var memory = manager.ToArray();
Assert.True(ArrayHelpers.Comparer <byte>().Equals(bytes, memory));
stream.Seek(0, SeekOrigin.Begin);
byte[] read = UmsReadTests.ReadAllBytes(stream);
Assert.Equal(stream.Position, read.Length);
byte[] current = manager.ToArray();
Assert.True(ArrayHelpers.Comparer <byte>().Equals(read, current));
Assert.True(ArrayHelpers.Comparer <byte>().Equals(read, bytes));
stream.Write(new byte[0], 0, 0);
}
}
public static void ReadWriteByte()
{
var length = 1000;
using (var manager = new UmsManager(FileAccess.ReadWrite, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
var bytes = ArrayHelpers.CreateByteArray(length);
for (int index = 0; index < bytes.Length; index++)
{
byte byteToWrite = bytes[index];
stream.WriteByte(byteToWrite);
stream.Position--;
int read = stream.ReadByte();
Assert.Equal((byte)read, byteToWrite);
}
var memory = manager.ToArray();
Assert.True(ArrayHelpers.Comparer <byte>().Equals(bytes, memory));
}
}
public static void ReadWriteByteSafeBuffer()
{
var length = 1000;
using (var buffer = new TestSafeBuffer(length))
{
var stream = new UnmanagedMemoryStream(buffer, 0, (long)buffer.ByteLength, FileAccess.ReadWrite);
Assert.Equal(stream.Length, length);
var bytes = ArrayHelpers.CreateByteArray(length);
for (int index = 0; index < length; index++)
{
stream.WriteByte(bytes[index]);
}
stream.Position = 0;
for (int index = 0; index < length; index++)
{
int value = stream.ReadByte();
Assert.Equal(bytes[index], (byte)value);
}
var memory = buffer.ToArray();
Assert.True(ArrayHelpers.Comparer <byte>().Equals(bytes, memory));
}
}
public void WriteByte()
{
const int length = 1000;
using (var manager = new UmsManager(FileAccess.Write, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.WriteUmsInvariants(stream);
var bytes = ArrayHelpers.CreateByteArray(length);
for (int index = 0; index < bytes.Length; index++)
{
stream.WriteByte(bytes[index]);
}
var memory = manager.ToArray();
Assert.Equal(bytes, memory, ArrayHelpers.Comparer <byte>());
stream.SetLength(0);
stream.Position = 1;
bytes = ArrayHelpers.CreateByteArray(length);
for (int index = 1; index < bytes.Length; index++)
{
stream.WriteByte(bytes[index]);
}
stream.Position = 0;
stream.WriteByte(bytes[0]);
memory = manager.ToArray();
Assert.Equal(bytes, memory, ArrayHelpers.Comparer <byte>());
}
}
public void ReadWrite()
{
const int length = 1000;
using (var manager = new UmsManager(FileAccess.ReadWrite, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
Assert.Equal(stream.Length, length);
var bytes = ArrayHelpers.CreateByteArray(length);
var copy = bytes.Copy();
Write(stream, copy, 0, length);
var memory = manager.ToArray();
Assert.Equal(bytes, memory, ArrayHelpers.Comparer <byte>());
stream.Seek(0, SeekOrigin.Begin);
byte[] read = ReadAllBytes(stream);
Assert.Equal(stream.Position, read.Length);
byte[] current = manager.ToArray();
Assert.Equal(current, read, ArrayHelpers.Comparer <byte>());
Assert.Equal(bytes, read, ArrayHelpers.Comparer <byte>());
Write(stream, new byte[0], 0, 0);
}
}
public static void CannotUseStreamAfterDispose()
{
using (var manager = new UmsManager(FileAccess.ReadWrite, 1000))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
stream.Dispose();
Assert.False(stream.CanRead);
Assert.False(stream.CanWrite);
Assert.False(stream.CanSeek);
Assert.Throws <ObjectDisposedException>(() => { long x = stream.Capacity; });
Assert.Throws <ObjectDisposedException>(() => { long y = stream.Length; });
Assert.Throws <ObjectDisposedException>(() => { stream.SetLength(2); });
Assert.Throws <ObjectDisposedException>(() => { long z = stream.Position; });
Assert.Throws <ObjectDisposedException>(() => { stream.Position = 2; });
Assert.Throws <ObjectDisposedException>(() => stream.Seek(0, SeekOrigin.Begin));
Assert.Throws <ObjectDisposedException>(() => stream.Seek(0, SeekOrigin.Current));
Assert.Throws <ObjectDisposedException>(() => stream.Seek(0, SeekOrigin.End));
byte[] buffer = ArrayHelpers.CreateByteArray(10);
Assert.Throws <ObjectDisposedException>(() => stream.Read(buffer, 0, buffer.Length));
Assert.Throws <ObjectDisposedException>(() => stream.ReadByte());
Assert.Throws <ObjectDisposedException>(() => stream.WriteByte(0));
Assert.Throws <ObjectDisposedException>(() => stream.Write(buffer, 0, buffer.Length));
}
}
public void Write()
{
const int length = 1000;
using (var manager = new UmsManager(FileAccess.Write, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.WriteUmsInvariants(stream);
Assert.Equal(stream.Length, length);
var bytes = ArrayHelpers.CreateByteArray(length);
Write(stream, bytes.Copy(), 0, length);
var memory = manager.ToArray();
Assert.Equal(bytes, memory, ArrayHelpers.Comparer <byte>());
Write(stream, new byte[0], 0, 0);
stream.SetLength(1);
Assert.Equal(1, stream.Length);
stream.SetLength(4);
Assert.Equal(4, stream.Length);
stream.SetLength(0);
Assert.Equal(0, stream.Length);
stream.Position = 1;
bytes = ArrayHelpers.CreateByteArray(length - 1);
Write(stream, bytes, 0, length - 1);
memory = manager.ToArray();
for (int i = 0; i < bytes.Length; i++)
{
Assert.Equal(bytes[i], memory[i + 1]);
}
Assert.True(stream.WriteAsync(bytes, 0, bytes.Length, new CancellationToken(true)).IsCanceled);
stream.Position = 0;
bytes = ArrayHelpers.CreateByteArray(length);
for (int i = 0; i < 4; i++)
{
Task t = stream.WriteAsync(bytes, i * (bytes.Length / 4), bytes.Length / 4);
Assert.True(t.Status == TaskStatus.RanToCompletion);
}
Assert.Equal(bytes, manager.ToArray(), ArrayHelpers.Comparer <byte>());
}
}
public static void WriteSafeBuffer()
{
var length = 1000;
using (var buffer = new TestSafeBuffer(length))
{
var stream = new UnmanagedMemoryStream(buffer, 0, (long)buffer.ByteLength, FileAccess.Write);
Assert.Equal(stream.Length, length);
var bytes = ArrayHelpers.CreateByteArray(length);
var copy = bytes.Copy();
stream.Write(copy, 0, length);
var memory = buffer.ToArray();
Assert.True(ArrayHelpers.Comparer <byte>().Equals(bytes, memory));
stream.Write(new byte[0], 0, 0);
}
}
public static void Write()
{
const int length = 1000;
using (var manager = new UmsManager(FileAccess.Write, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.WriteUmsInvariants(stream);
Assert.Equal(stream.Length, length);
var bytes = ArrayHelpers.CreateByteArray(length);
stream.Write(bytes.Copy(), 0, length);
var memory = manager.ToArray();
Assert.Equal(bytes, memory, ArrayHelpers.Comparer <byte>());
stream.Write(new byte[0], 0, 0);
}
}
public static async Task CopyToAsyncTest()
{
byte[] testData = ArrayHelpers.CreateByteArray(8192);
using (var manager = new UmsManager(FileAccess.Read, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.ReadUmsInvariants(ums);
MemoryStream destination = new MemoryStream();
destination.Position = 0;
await ums.CopyToAsync(destination);
Assert.Equal(testData, destination.ToArray());
destination.Position = 0;
await ums.CopyToAsync(destination, 2);
Assert.Equal(testData, destination.ToArray());
destination.Position = 0;
await ums.CopyToAsync(destination, 0x1000, new CancellationTokenSource().Token);
Assert.Equal(testData, destination.ToArray());
await Assert.ThrowsAnyAsync <OperationCanceledException>(() => ums.CopyToAsync(destination, 0x1000, new CancellationToken(true)));
}
// copy to disposed stream should throw
using (var manager = new UmsManager(FileAccess.Read, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.ReadUmsInvariants(ums);
MemoryStream destination = new MemoryStream();
destination.Dispose();
await Assert.ThrowsAsync <ObjectDisposedException>(() => ums.CopyToAsync(destination));
}
// copy from disposed stream should throw
using (var manager = new UmsManager(FileAccess.Read, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.ReadUmsInvariants(ums);
ums.Dispose();
MemoryStream destination = new MemoryStream();
await Assert.ThrowsAsync <ObjectDisposedException>(() => ums.CopyToAsync(destination));
}
// copying to non-writable stream should throw
using (var manager = new UmsManager(FileAccess.Read, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.ReadUmsInvariants(ums);
MemoryStream destination = new MemoryStream(new byte[0], false);
await Assert.ThrowsAsync <NotSupportedException>(() => ums.CopyToAsync(destination));
}
// copying from non-readable stream should throw
using (var manager = new UmsManager(FileAccess.Write, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.WriteUmsInvariants(ums);
MemoryStream destination = new MemoryStream(new byte[0], false);
await Assert.ThrowsAsync <NotSupportedException>(() => ums.CopyToAsync(destination));
}
}
public static void CopyToTest()
{
byte[] testData = ArrayHelpers.CreateByteArray(8192);
using (var manager = new UmsManager(FileAccess.Read, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.ReadUmsInvariants(ums);
MemoryStream destination = new MemoryStream();
destination.Position = 0;
ums.CopyTo(destination);
Assert.Equal(testData, destination.ToArray());
destination.Position = 0;
ums.CopyTo(destination, 1);
Assert.Equal(testData, destination.ToArray());
}
// copy to disposed stream should throw
using (var manager = new UmsManager(FileAccess.Read, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.ReadUmsInvariants(ums);
MemoryStream destination = new MemoryStream();
destination.Dispose();
Assert.Throws <ObjectDisposedException>(() => ums.CopyTo(destination));
}
// copy from disposed stream should throw
using (var manager = new UmsManager(FileAccess.Read, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.ReadUmsInvariants(ums);
ums.Dispose();
MemoryStream destination = new MemoryStream();
Assert.Throws <ObjectDisposedException>(() => ums.CopyTo(destination));
}
// copying to non-writable stream should throw
using (var manager = new UmsManager(FileAccess.Read, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.ReadUmsInvariants(ums);
MemoryStream destination = new MemoryStream(new byte[0], false);
Assert.Throws <NotSupportedException>(() => ums.CopyTo(destination));
}
// copying from non-readable stream should throw
using (var manager = new UmsManager(FileAccess.Write, testData))
{
UnmanagedMemoryStream ums = manager.Stream;
UmsTests.WriteUmsInvariants(ums);
MemoryStream destination = new MemoryStream(new byte[0], false);
Assert.Throws <NotSupportedException>(() => ums.CopyTo(destination));
}
}