G'day GrandFather,

Thanks for the suggestion. I had a look at the documentation for that module. From what I read, its main purpose is to allow testing of code/logic without touching the filesystem, which isn't really my problem.

Whether a real or a mocked file, there would only be a few CPU cycles between the file checks (-e, -r, etc.) and the open call: that only provides a very tiny window for something to change such that, for instance, -r is successful but open subsequently finds that the file does not have read permission.

Anyway, thanks for replying and offering a suggestion.

— Ken

In reply to Re^2: Testing unexpected I/O failures by kcott
in thread Testing unexpected I/O failures by kcott

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