How to use _collect_session method in tox

Best Python code snippet using tox_python

ShellProcess.py

Source:ShellProcess.py

...45        self.pid = None46        self.linesep = linesep47        self.status = None48        self.kill_handler = []49        ShellProcess._collect_session(self)50        self.killing = False51        self._execute()52        if process_manager:53            ProcessManager.register_pid(self.pid , self._die_event)54    _sessions = []55    @classmethod56    def _collect_session(cls, instance):57        ShellProcess._sessions.append(instance)58    @classmethod59    def kill_all_session(cls):60        for session in ShellProcess._sessions:61            session.kill()62    @classmethod63    def _del_session(cls, instance):64        ShellProcess._sessions.remove(instance)65    def __del__(self):66        ShellProcess._del_session(self)67        self.kill()68    def __repr__(self):69        return "<ShellProcess %s>" % (self.command)70    __str__ = __repr__...

conftest.py

Source:conftest.py

...12    request.addfinalizer(py.path.local().chdir)13    def run(*argv):14        reset_report()15        with RunResult(argv, capfd) as result:16            _collect_session(result)17            # noinspection PyBroadException18            try:19                tox.session.main([str(x) for x in argv])20                assert False  # this should always exist with SystemExit21            except SystemExit as exception:22                result.ret = exception.code23            except OSError as e:24                traceback.print_exc()25                result.ret = e.errno26            except Exception:27                traceback.print_exc()28                result.ret = 129        return result30    def _collect_session(result):31        prev_build = tox.session.build_session32        def build_session(config):33            result.session = prev_build(config)34            return result.session35        monkeypatch.setattr(tox.session, "build_session", build_session)36    yield run37@pytest.fixture(params=["bake_default",38                        "bake_examples_compiled",39                        "bake_examples"])40def cookiejar(request):41    """42    All the possible renders of the template.43    """44    return request.getfixturevalue(request.param)...

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