commit 485a09238b4c4e73337e4eb0a88ee82955ff891a
author Patrick Williams <patrick@stwcx.xyz> Fri Aug 12 11:44:55 2022 -0500
committer Patrick Williams <patrick@stwcx.xyz> Tue Aug 23 02:30:16 2022 -0500
tree f7e2e727ff36d28883261306bfb9ad83583ce05f
parent fb612a5183ba7e4982801603062574b8cd9c0fb5

unit-test: cppcheck: use temporary directory

The previous code would create a directory named `cppcheck-temp`
in the root of the repository under test as the cppcheck cache but
never cleaned it up.  This left stray directories around when using
the unit test locally.

Switch the mechanism to use tempfile.TemporaryDirectory so that
the directory is automatically cleaned up when the testing is
complete.

Tested: Ran unit-test locally and observed cppcheck-temp directory
no longer remains[1].

1. https://github.com/williamspatrick/dotfiles/blob/840250f0c56b299a8de47cc2ea7c558a14eeb517/env/30_linux/lfopenbmc.zsh#L76

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Idde8feb28bef663d156c5d1d1f21a3d8c629c72d