New issue 288: Pass test result to finalizer for cleaning up debug data
https://bitbucket.org/hpk42/pytest/issue/288/pass-test-result-to-finalizer-for-cleaning
Torsten Landschoff:
We are currently juggling with big files in tests which we currently store in
tmpdir.
This kills our Jenkins slaves because py.test will keep temporary files for 3
runs of each test suite. We are no up at > 10GB of temporary files for some
projects per test run.
Keeping the temporary files is indeed a nice feature which we often use during
TDD to find out what we were missing. But the temporary files of a passed test
are 99.99% worthless for us.
Therefore I'd like to have a tmpdir fixture that cleans up the temporary files
if the test was successful or skipped. Or have some options to configure how
py.test handles temporary files wrt. what is kept.
As an intermediate step I am currently moving some pytest.fixture functions to
clean up the temporary files after use, but I end up removing the files even if
the test failed.
What I am also just realizing: We moved the temporary files inside the Jenkins
workspace of each project to keep track of disk usage and for easy access via
the web interface. If only temporary files for failed tests are kept, then we
could archive them as build artifacts so that we can even diagnose tests that
failed in the past.
I was thinking about something in the line of
```
#!python
@pytest.fixture
def database(request):
# Pull SQLite test database from somewhere
dbfile = "..."
def finalizer(testresult):
if testresult == "PASS":
os.unlink(dbfile)
request.addfinalizer(finalizer, parameters=["testresult"])
```
Alternatively, pytest could use introspection to inject the testresult if the
finalizer takes a testresult argument.
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