On Feb 5, 2007, at 5:41 AM, Adam Kennedy wrote:
Short of running each test in some sort of transactional file
system (do such things exist? Are they common?) or cloning the
build directory before each test...
Here's a terrible, non-portable idea:
* create a new, empty temp directory
* use UnionFS[1] or Aufs[2] to mount that temp dir read-write
overlaid on your build folder as read-only.
* chdir to that new filesystem (or chroot?)
* run your tests (which copy-on-write through the unioned FS to the
temp dir)
* chdir back
* unmount the unioned FS
* delete the temp dir
Rather than being transactional, it's instead a throw-away branch of
your filesystem. Like a BEGIN where you never plan to COMMIT.
Chris
[1] http://en.wikipedia.org/wiki/UnionFS
http://lwn.net/Articles/219827/ (subscribers only until this
Thursday)
[2] http://aufs.sourceforge.net/
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Chris Dolan, Equilibrious LLC, http://equilibrious.net/
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