public void DoubleReturnError()
{
var mock = new Mock <IArrayPool>();
using (var memoryStream = new PooledMemoryStream(mock.Object, 128))
{
mock.Verify(s => s.Return(It.IsAny <byte[]>()), Times.Never);
memoryStream.Close();
mock.Verify(s => s.Return(It.IsAny <byte[]>()), Times.Once);
}
mock.Verify(s => s.Return(It.IsAny <byte[]>()), Times.Once);
}