destructive_dispatcher.py 文件源码

def pytest_runtest_teardown(item, nextitem):
    """Pytest hook to dispatch destructive scenarios."""
    do_revert = True

    # Prevent reverting after skipped tests
    if getattr(item, SKIPPED, False):
        do_revert = False

    # Revert only destructive tests
    if not item.get_marker(DESTRUCTIVE):
        do_revert = False

    snapshot_name = item.session.config.option.snapshot_name

    # Prevent reverting if no snapshot_name passed
    if snapshot_name is None:
        do_revert = False

    if do_revert:
        destructor = item._request.getfixturevalue('os_faults_client')
        # reject finalizers of all fixture scopes
        for finalizers in item.session._setupstate._finalizers.values():
            for finalizer in finalizers:

                # There are finalizers in the form of lambda function without
                # name. That looks as internal pytest specifics. We should skip
                # them.
                try:
                    fixture_def = six.get_method_self(finalizer)
                except AttributeError:
                    continue
                if not hasattr(fixture_def.func, INDESTRUCTIBLE):
                    LOG.debug('Clear {} finalizers'.format(fixture_def))
                    fixture_def._finalizer[:] = []

                    # Clear fixture cached result to force fixture with any
                    # scope to restart in next test.
                    if hasattr(fixture_def, "cached_result"):
                        LOG.debug('Clear {} cache'.format(fixture_def))
                        del fixture_def.cached_result

    outcome = yield

    # Prevent reverting after last test
    if nextitem is None or item.session.shouldstop:
        do_revert = False

    # Prevent reverting after KeyboardInterrupt
    if outcome.excinfo is not None and outcome.excinfo[0] is KeyboardInterrupt:
        do_revert = False

    if do_revert and destructor:
        revert_environment(destructor, snapshot_name)
        time.sleep(item.session.config.option.revert_timeout * 60)