tree 52a1b365838f54de53c685f19f27450dc3e53081
parent bf47d2ef673b889870f4169e10a20f9c04d9db45
author Tiancong Wang <tcwang@google.com> 1596144587 -0700
committer Commit Bot <commit-bot@chromium.org> 1596174447 +0000

toolchain: Cleanup tmp directory for artifact during prepare

Since some toolchain artifacts appears in /tmp or tmp under each
build, we want to make sure the directory we are looking for is
cleaned up before using it. So this patch adds clean up (and tests)
during prepare call.

BUG=chromium:1056904
TEST=unittest pass

Change-Id: Ib3594c8c192051ea20bed81ffc3b09acaae1ce29
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2330413
Tested-by: Tiancong Wang <tcwang@google.com>
Commit-Queue: Tiancong Wang <tcwang@google.com>
Reviewed-by: George Burgess <gbiv@chromium.org>
Auto-Submit: Tiancong Wang <tcwang@google.com>