Unnecessary warning when closing a file

[marijnd]

When running a unittest on a piece of code that uses libCharon we get:

.../Charon/VirtualFile.py:50: ResourceWarning: unclosed file

Reason for this is that the testrunner run python with -W. I think the warning is invalid. Is there a way to prevent this warning?

[Ghostkeeper]

The ResourceWarning most likely comes from zipfile.ZipFile, when you're closing a zip archive before all of the files within the archive have been closed?

[marijnd]

I get it when I do this:

    f = VirtualFile()
    f.open("output.ufp")
    f.close()

If a file remains unclosed that should be handled by VirtualFile I think