public unsafe void CreateFromUnmanagedMemoryStream_LargeIntSize()
{
var assembly = TestResources.Basic.Members;
fixed(byte *assemblyPtr = assembly)
{
// ensure that having an extremely large stream is not a problem (e.g. that we don't wrap the int around
// to be a negative size).
var disposed = false;
var seeked = false;
var stream = new MockUnmanagedMemoryStream(assemblyPtr, (long)int.MaxValue + 1)
{
OnDispose = _ => disposed = true,
OnSeek = (_, _) => seeked = true,
};
var metadata = ModuleMetadata.CreateFromStream(stream, leaveOpen: false);
Assert.Equal(new AssemblyIdentity("Members"), metadata.Module.ReadAssemblyIdentityOrThrow());
// Disposing the metadata should dispose the stream.
metadata.Dispose();
Assert.True(disposed);
// We should have not seeked. This stream will still be read as a direct memory block.
Assert.False(seeked);
}
}
public unsafe void CreateFromMetadata_Assembly_Stream_DisposeOwnerFalse()
{
var assembly = TestResources.Basic.Members;
PEHeaders h = new PEHeaders(new MemoryStream(assembly));
fixed(byte *ptr = &assembly[h.MetadataStartOffset])
{
var disposed = false;
var seeked = false;
var stream = new MockUnmanagedMemoryStream(ptr, h.MetadataSize)
{
OnDispose = _ => disposed = true,
OnSeek = (_, _) => seeked = true,
};
var metadata = ModuleMetadata.CreateFromMetadata((IntPtr)stream.PositionPointer, (int)stream.Length, stream, disposeOwner: false);
Assert.Equal(new AssemblyIdentity("Members"), metadata.Module.ReadAssemblyIdentityOrThrow());
// Disposing the metadata should not dispose the stream.
metadata.Dispose();
Assert.False(disposed);
stream.Dispose();
Assert.True(disposed);
// We should have never seeked. The pointer should have been used directly.
Assert.False(seeked);
}
}
public unsafe void CreateFromUnmanagedMemoryStream_Prefetcha_LeaveOpenTrue(PEStreamOptions options)
{
var assembly = TestResources.Basic.Members;
fixed(byte *assemblyPtr = assembly)
{
var disposed = false;
var seeked = false;
var stream = new MockUnmanagedMemoryStream(assemblyPtr, assembly.LongLength)
{
OnDispose = _ => disposed = true,
OnSeek = (_, _) => seeked = true,
};
var metadata = ModuleMetadata.CreateFromStream(stream, options | PEStreamOptions.LeaveOpen);
Assert.Equal(new AssemblyIdentity("Members"), metadata.Module.ReadAssemblyIdentityOrThrow());
// Disposing the metadata should not dispose the stream.
metadata.Dispose();
Assert.False(disposed);
stream.Dispose();
Assert.True(disposed);
// We should have seeked. This stream will be viewed as a normal stream since we're prefetching
// everything.
Assert.True(seeked);
}
}
public unsafe void CreateFromUnmanagedMemoryStream_LeaveOpenTrue()
{
var assembly = TestResources.Basic.Members;
fixed(byte *assemblyPtr = assembly)
{
var disposed = false;
var seeked = false;
var stream = new MockUnmanagedMemoryStream(assemblyPtr, assembly.LongLength)
{
OnDispose = _ => disposed = true,
OnSeek = (_, _) => seeked = true,
};
var metadata = ModuleMetadata.CreateFromStream(stream, leaveOpen: true);
Assert.Equal(new AssemblyIdentity("Members"), metadata.Module.ReadAssemblyIdentityOrThrow());
// Disposing the metadata should not dispose the stream.
metadata.Dispose();
Assert.False(disposed);
stream.Dispose();
Assert.True(disposed);
// We should have never seeked. The pointer should have been used directly.
Assert.False(seeked);
}
}