Well that’s weird
I ran into an interesting problem in a recent
Let’s set the scene …
Quickly Checking in Scala
In the project in question, I reached for a library to
do a fair amount of JSON parsing.
I hadn’t used the library before, so I ended up writing some
ScalaCheck tests for the convenience/wrapper
functions I made.
One test involved writing data to a temporary file, reading and parsing that
information, then comparing the parsed results to the original data.
If all went well, the parsed and original data should match perfectly.
Either way, there was clean up code at the end of the test to delete the
My mistake was in letting
ScalaCheck generate strings of arbitrary characters
for the temporary file’s name, rather than restricting those filenames to
printable or alphanumeric characters only.
Obscure OS X obstacles
It turns out that the latest version of Mac OS X can’t delete—or
otherwise get a handle on, via GUI or CLI—files with certain characters
ScalaCheck created such a temporary file, my clean up code was
I tried everything the Quantifind Dev team and I
could think of, to no avail.
I now have, tucked away in a directory called
unkillable_trash, a file that
nothing short of reformatting my hard drive will remove.
Since the time of this post, a botched update necessitated reinstalling the OS
on my work computer; the
unkillable_trash is, sadly, now gone.