public void DuplicateStreamIsCollected()
{
VerifySupportsExceptionsInDelegates();
var handle = DoWork();
CollectGarbage();
Assert.False(SKObject.GetInstance <SKManagedStream>(handle, out _));
IntPtr DoWork()
{
var dotnet = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 });
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(1, stream.ReadByte());
Assert.Equal(2, stream.ReadByte());
var dupe1 = stream.Duplicate();
Assert.Equal(1, dupe1.ReadByte());
Assert.Equal(2, dupe1.ReadByte());
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
stream.Dispose();
var dupe2 = dupe1.Duplicate();
Assert.Equal(1, dupe2.ReadByte());
Assert.Equal(2, dupe2.ReadByte());
return(dupe2.Handle);
}
}
public void FullOwnershipIsTransferredToTheChildIfTheParentIsDisposed()
{
VerifySupportsExceptionsInDelegates();
var dotnet = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 });
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(1, stream.ReadByte());
Assert.Equal(2, stream.ReadByte());
var dupe1 = stream.Duplicate();
Assert.Equal(1, dupe1.ReadByte());
Assert.Equal(2, dupe1.ReadByte());
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
stream.Dispose();
var dupe2 = dupe1.Duplicate();
Assert.Equal(1, dupe2.ReadByte());
Assert.Equal(2, dupe2.ReadByte());
Assert.Throws <InvalidOperationException>(() => dupe1.Duplicate());
dupe1.Dispose();
dupe2.Dispose();
Assert.Throws <ObjectDisposedException>(() => dotnet.Position);
}
public void StreamCannotBeDuplicatedMultipleTimes()
{
VerifySupportsExceptionsInDelegates();
var dotnet = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 });
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(1, stream.ReadByte());
Assert.Equal(2, stream.ReadByte());
var dupe = stream.Duplicate();
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
Assert.Equal(1, dupe.ReadByte());
}
public void MiddleDuplicateCanBeRemoved()
{
VerifySupportsExceptionsInDelegates();
var dotnet = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 });
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(1, stream.ReadByte());
Assert.Equal(2, stream.ReadByte());
var dupe1 = stream.Duplicate();
Assert.Equal(1, dupe1.ReadByte());
Assert.Equal(2, dupe1.ReadByte());
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
var dupe2 = dupe1.Duplicate();
Assert.Equal(1, dupe2.ReadByte());
Assert.Equal(2, dupe2.ReadByte());
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
Assert.Throws <InvalidOperationException>(() => dupe1.Duplicate());
dupe1.Dispose();
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
dupe2.Dispose();
var dupe3 = stream.Duplicate();
Assert.Equal(1, dupe3.ReadByte());
Assert.Equal(2, dupe3.ReadByte());
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
}
public void DotNetStreamIsNotClosedPrematurely()
{
var dotnet = CreateTestStream();
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(0, stream.Position);
var dupe = stream.Duplicate();
Assert.Equal(0, dupe.Position);
stream.Dispose();
Assert.Equal(0, dupe.Position);
dupe.Dispose();
Assert.Throws <ObjectDisposedException>(() => dotnet.Position);
}
public void StreamCanBeDuplicatedButTheOriginalCannotBeRead()
{
VerifySupportsExceptionsInDelegates();
var dotnet = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 });
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(1, stream.ReadByte());
Assert.Equal(2, stream.ReadByte());
Assert.Equal(3, stream.ReadByte());
var dupe = stream.Duplicate();
Assert.NotSame(stream, dupe);
Assert.IsType <SKManagedStream>(dupe);
Assert.Equal(1, dupe.ReadByte());
Assert.Equal(2, dupe.ReadByte());
Assert.Equal(3, dupe.ReadByte());
Assert.Throws <InvalidOperationException>(() => stream.ReadByte());
}
