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How to use popen_env_test method in tox

Best Python code snippet using tox_python

test_session.py

Source:test_session.py

...142        "py36-diffcov",143        "py36-diffcov-extra",144    ]145@pytest.fixture()146def popen_env_test(initproj, cmd, monkeypatch):147    def func(tox_env, isolated_build):148        files = {149            "tox.ini": """150               [tox]151               isolated_build = {}152               [testenv:{}]153               commands = python -c "print('ok')"154               """.format(155                "True" if isolated_build else "False",156                tox_env,157            ),158        }159        if isolated_build:160            files[161                "pyproject.toml"162            ] = """163                [build-system]164                requires = ["setuptools >= 35.0.2", "setuptools_scm >= 2.0.0, <3"]165                build-backend = 'setuptools.build_meta'166                """167        initproj("env_var_test", filedefs=files)168        class IsolatedResult(object):169            def __init__(self):170                self.popens = []171                self.cwd = None172        res = IsolatedResult()173        class EnvironmentTestRun(Thread):174            """we wrap this invocation into a thread to avoid modifying in any way the175            current threads environment variable (e.g. on failure of this test incorrect teardown)176            """177            def run(self):178                prev_build = tox.session.build_session179                def build_session(config):180                    res.session = prev_build(config)181                    res._popen = res.session.popen182                    monkeypatch.setattr(res.session, "popen", popen)183                    return res.session184                monkeypatch.setattr(tox.session, "build_session", build_session)185                def popen(cmd, **kwargs):186                    activity_id = _actions[-1].name187                    activity_name = _actions[-1].activity188                    ret = "NOTSET"189                    try:190                        ret = res._popen(cmd, **kwargs)191                    except tox.exception.InvocationError as exception:192                        ret = exception193                    finally:194                        res.popens.append(195                            (activity_id, activity_name, kwargs.get("env"), ret, cmd),196                        )197                    return ret198                _actions = []199                from tox.action import Action200                _prev_enter = Action.__enter__201                def enter(self):202                    _actions.append(self)203                    return _prev_enter(self)204                monkeypatch.setattr(Action, "__enter__", enter)205                _prev_exit = Action.__exit__206                def exit_func(self, *args, **kwargs):207                    del _actions[_actions.index(self)]208                    _prev_exit(self, *args, **kwargs)209                monkeypatch.setattr(Action, "__exit__", exit_func)210                res.result = cmd("-e", tox_env)211                res.cwd = os.getcwd()212        thread = EnvironmentTestRun()213        thread.start()214        thread.join()215        return res216    yield func217@pytest.mark.network218def test_tox_env_var_flags_inserted_non_isolated(popen_env_test):219    res = popen_env_test("py", False)220    assert_popen_env(res)221@pytest.mark.network222def test_tox_env_var_flags_inserted_isolated(popen_env_test):223    res = popen_env_test("py", True)224    assert_popen_env(res)225def assert_popen_env(res):226    res.result.assert_success()227    for tox_id, _, env, __, ___ in res.popens:228        assert env["TOX_WORK_DIR"] == os.path.join(res.cwd, ".tox")229        if tox_id != "GLOB":230            assert env["TOX_ENV_NAME"] == tox_id231            assert env["TOX_ENV_DIR"] == os.path.join(res.cwd, ".tox", tox_id)232        # ensure native strings for environ for windows233        for k, v in env.items():234            assert type(k) is str, (k, v, type(k))235            assert type(v) is str, (k, v, type(v))236def test_command_prev_post_ok(cmd, initproj, mock_venv):237    initproj(...

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