The test suite purges the scratch dir in the tearDown method, but if python crashes (or is non-gracefully killed) this won't get run. Also the user can set QEMU_TEST_KEEP_SCRATCH to disable cleanup.
Purging the scratch dir on startup ensures that tests always run from a clean state. Reported-by: Peter Maydell <peter.mayd...@linaro.org> Signed-off-by: Daniel P. Berrangé <berra...@redhat.com> --- tests/functional/qemu_test/testcase.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tests/functional/qemu_test/testcase.py b/tests/functional/qemu_test/testcase.py index faa0a4f0db..2c0abde395 100644 --- a/tests/functional/qemu_test/testcase.py +++ b/tests/functional/qemu_test/testcase.py @@ -205,6 +205,10 @@ def setUp(self): self.outputdir = self.build_file('tests', 'functional', self.arch, self.id()) self.workdir = os.path.join(self.outputdir, 'scratch') + if os.path.exists(self.workdir): + # Purge as safety net in case of unclean termination of + # previous test, or use of QEMU_TEST_KEEP_SCRATCH + shutil.rmtree(self.workdir) os.makedirs(self.workdir, exist_ok=True) self.log_filename = self.log_file('base.log') -- 2.50.1