public static unsafe void PointerCtor()
{
int someInt32 = 42;
int * pInt32 = &someInt32;
byte *pByte = (byte *)pInt32;
using (var stream = new UnmanagedMemoryStream(pByte, 0))
{
Assert.True(stream.CanRead);
Assert.True(stream.CanSeek);
Assert.False(stream.CanWrite);
Assert.False(stream.CanTimeout);
Assert.Equal(0, stream.Length);
Assert.Equal(0, stream.Capacity);
Assert.Equal(0, stream.Position);
Assert.Throws <InvalidOperationException>(() => stream.ReadTimeout);
Assert.Throws <InvalidOperationException>(() => stream.ReadTimeout = 42);
Assert.Throws <InvalidOperationException>(() => stream.WriteTimeout);
Assert.Throws <InvalidOperationException>(() => stream.WriteTimeout = 42);
Assert.True(stream.PositionPointer == pByte);
}
using (var stream = new DerivedUnmanagedMemoryStream())
{
Assert.False(stream.CanRead);
Assert.False(stream.CanSeek);
Assert.False(stream.CanWrite);
Assert.False(stream.CanTimeout);
Assert.Throws <ArgumentOutOfRangeException>(() => stream.Initialize(pByte, -1, 4, FileAccess.Read));
Assert.Throws <ArgumentOutOfRangeException>(() => stream.Initialize(pByte, 1, -4, FileAccess.Read));
Assert.Throws <ArgumentOutOfRangeException>(() => stream.Initialize(pByte, 5, 4, FileAccess.Read));
Assert.Throws <ArgumentOutOfRangeException>(() => stream.Initialize(pByte, 1, 4, (FileAccess)12345));
stream.Initialize(pByte, 1, 4, FileAccess.ReadWrite);
Assert.Throws <InvalidOperationException>(() => stream.Initialize(pByte, 1, 4, FileAccess.ReadWrite));
Assert.True(stream.CanRead);
Assert.True(stream.CanSeek);
Assert.True(stream.CanWrite);
Assert.Equal(1, stream.Length);
Assert.Equal(4, stream.Capacity);
Assert.Equal(0, stream.Position);
Assert.Throws <InvalidOperationException>(() => stream.ReadTimeout);
Assert.Throws <InvalidOperationException>(() => stream.ReadTimeout = 42);
Assert.Throws <InvalidOperationException>(() => stream.WriteTimeout);
Assert.Throws <InvalidOperationException>(() => stream.WriteTimeout = 42);
Assert.True(stream.PositionPointer == pByte);
}
}
public static unsafe void PointerCtor()
{
int someInt32 = 42;
int* pInt32 = &someInt32;
byte* pByte = (byte*)pInt32;
using (var stream = new UnmanagedMemoryStream(pByte, 0))
{
Assert.True(stream.CanRead);
Assert.True(stream.CanSeek);
Assert.False(stream.CanWrite);
Assert.False(stream.CanTimeout);
Assert.Equal(0, stream.Length);
Assert.Equal(0, stream.Capacity);
Assert.Equal(0, stream.Position);
Assert.Throws<InvalidOperationException>(() => stream.ReadTimeout);
Assert.Throws<InvalidOperationException>(() => stream.ReadTimeout = 42);
Assert.Throws<InvalidOperationException>(() => stream.WriteTimeout);
Assert.Throws<InvalidOperationException>(() => stream.WriteTimeout = 42);
Assert.True(stream.PositionPointer == pByte);
}
using (var stream = new DerivedUnmanagedMemoryStream())
{
Assert.False(stream.CanRead);
Assert.False(stream.CanSeek);
Assert.False(stream.CanWrite);
Assert.False(stream.CanTimeout);
Assert.Throws<ArgumentOutOfRangeException>(() => stream.Initialize(pByte, -1, 4, FileAccess.Read));
Assert.Throws<ArgumentOutOfRangeException>(() => stream.Initialize(pByte, 1, -4, FileAccess.Read));
Assert.Throws<ArgumentOutOfRangeException>(() => stream.Initialize(pByte, 5, 4, FileAccess.Read));
Assert.Throws<ArgumentOutOfRangeException>(() => stream.Initialize(pByte, 1, 4, (FileAccess)12345));
stream.Initialize(pByte, 1, 4, FileAccess.ReadWrite);
Assert.Throws<InvalidOperationException>(() => stream.Initialize(pByte, 1, 4, FileAccess.ReadWrite));
Assert.True(stream.CanRead);
Assert.True(stream.CanSeek);
Assert.True(stream.CanWrite);
Assert.Equal(1, stream.Length);
Assert.Equal(4, stream.Capacity);
Assert.Equal(0, stream.Position);
Assert.Throws<InvalidOperationException>(() => stream.ReadTimeout);
Assert.Throws<InvalidOperationException>(() => stream.ReadTimeout = 42);
Assert.Throws<InvalidOperationException>(() => stream.WriteTimeout);
Assert.Throws<InvalidOperationException>(() => stream.WriteTimeout = 42);
Assert.True(stream.PositionPointer == pByte);
}
}
private unsafe Task <Stream> CreateStream(byte[] initialData, FileAccess access)
{
Stream stream = null;
if (initialData is not null)
{
IntPtr ptr = Marshal.AllocHGlobal(initialData.Length);
_pointers.Add(ptr);
Marshal.Copy(initialData, 0, ptr, initialData.Length);
stream = new DerivedUnmanagedMemoryStream((byte *)ptr, initialData.Length, initialData.Length, access);
}
return(Task.FromResult(stream));
}
public static void Flush()
{
const int length = 1000;
using (var manager = new UmsManager(FileAccess.Write, length))
{
UnmanagedMemoryStream stream = manager.Stream;
stream.Flush();
Assert.True(stream.FlushAsync(new CancellationToken(true)).IsCanceled);
Assert.True(stream.FlushAsync().Status == TaskStatus.RanToCompletion);
}
using (var stream = new DerivedUnmanagedMemoryStream())
{
Assert.Throws<ObjectDisposedException>(() => stream.Flush());
Task t = stream.FlushAsync();
Assert.True(t.IsFaulted);
Assert.IsType<ObjectDisposedException>(t.Exception.InnerException);
}
}
public static void Flush()
{
const int length = 1000;
using (var manager = new UmsManager(FileAccess.Write, length))
{
UnmanagedMemoryStream stream = manager.Stream;
stream.Flush();
Assert.True(stream.FlushAsync(new CancellationToken(true)).IsCanceled);
Assert.True(stream.FlushAsync().Status == TaskStatus.RanToCompletion);
}
using (var stream = new DerivedUnmanagedMemoryStream())
{
Assert.Throws <ObjectDisposedException>(() => stream.Flush());
Task t = stream.FlushAsync();
Assert.True(t.IsFaulted);
Assert.IsType <ObjectDisposedException>(t.Exception.InnerException);
}
}
public static unsafe void BufferCtor()
{
const int length = 99;
using (FakeSafeBuffer buffer = new FakeSafeBuffer(length))
using (var stream = new DerivedUnmanagedMemoryStream(buffer, length, FileAccess.Read))
{
Assert.True(stream.CanRead);
Assert.True(stream.CanSeek);
Assert.False(stream.CanWrite);
Assert.Equal(length, stream.Length);
Assert.Equal(length, stream.Capacity);
Assert.Equal(0, stream.Position);
}
using (FakeSafeBuffer buffer = new FakeSafeBuffer(length))
using (var stream = new DerivedUnmanagedMemoryStream())
{
Assert.False(stream.CanRead);
Assert.False(stream.CanSeek);
Assert.False(stream.CanWrite);
stream.Initialize(buffer, 0, length, FileAccess.Write);
Assert.Throws <InvalidOperationException>(() => stream.Initialize(buffer, 0, length, FileAccess.Write));
Assert.False(stream.CanRead);
Assert.True(stream.CanSeek);
Assert.True(stream.CanWrite);
Assert.Equal(length, stream.Length);
Assert.Equal(length, stream.Capacity);
Assert.Equal(0, stream.Position);
Assert.Throws <NotSupportedException>(() => stream.SetLength(1));
}
}
public static unsafe void BufferCtor()
{
const int length = 99;
using (FakeSafeBuffer buffer = new FakeSafeBuffer(length))
using (var stream = new DerivedUnmanagedMemoryStream(buffer, length, FileAccess.Read))
{
Assert.True(stream.CanRead);
Assert.True(stream.CanSeek);
Assert.False(stream.CanWrite);
Assert.Equal(length, stream.Length);
Assert.Equal(length, stream.Capacity);
Assert.Equal(0, stream.Position);
}
using (FakeSafeBuffer buffer = new FakeSafeBuffer(length))
using (var stream = new DerivedUnmanagedMemoryStream())
{
Assert.False(stream.CanRead);
Assert.False(stream.CanSeek);
Assert.False(stream.CanWrite);
stream.Initialize(buffer, 0, length, FileAccess.Write);
Assert.Throws<InvalidOperationException>(() => stream.Initialize(buffer, 0, length, FileAccess.Write));
Assert.False(stream.CanRead);
Assert.True(stream.CanSeek);
Assert.True(stream.CanWrite);
Assert.Equal(length, stream.Length);
Assert.Equal(length, stream.Capacity);
Assert.Equal(0, stream.Position);
Assert.Throws<NotSupportedException>(() => stream.SetLength(1));
}
}