René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"KeyError in allure_pytest when running pytest.main() from inside a test (nested pytest run)","articleBody":"Running a nested pytest session (subsession) from within a test using `pytest.main()` causes `allure` to fail during teardown in subsession with a `KeyError` in `allure_commons/reporter.py`.\nThe inner test passes, but `allure` raises an exception, causing the overall main test to fail.\n\nThe issue reproduces **only** when both main and sub sessions use allure (for example, via configuration (`pytest.ini` or `pyproject.toml`) and the subsession runs teardown fixtures.\n\nThe report shows the subtest as broken and duplicates teardown fixtures for it - one fixture has `passed` state, and the duplicate has `unknown` state. \n\n| simple_fixture::0 | Unknown |\n|-|-|\n| simple_fixture::0 | 0s|\n\nOverriding `alluredir` doesn't help - allure report for main session always contains both tests, allure report for subsession - only its test.\n\nSteps to reproduce:\n1. Set pytest ini options (I'm using `pyproject.toml`)\n```toml\n[tool.pytest.ini_options]\naddopts = [\n    \"-v\",\n    \"--alluredir\", \"allure-results\",\n]\n```\n2. Create test file\n\n```python\nfrom pathlib import Path\n\nimport pytest\n\n\ndef test_parent():\n    args: list[str] = [\n        f\"{Path(__file__)}::test_child\",\n    ]\n    result = pytest.main(args)\n    assert not result\n\n\n@pytest.fixture()\ndef simple_fixture():\n    yield 2\n\n\ndef test_child(simple_fixture):\n    assert simple_fixture == 2\n\n```\n3. Run the command\n```bash\npytest test/test_parent.py::test_parent\n```\n\nActual result:\n```log\n❯ poetry run pytest test/test_parent.py::test_parent\n======================================== test session starts =========================================\nplatform darwin -- Python 3.13.5, pytest-8.4.0, pluggy-1.6.0 -- /example_dir/Library/Caches/pypoetry/virtualenvs/tests_repo-CJ2ygyH8-py3.13/bin/python\ncachedir: .pytest_cache\nrootdir: /example_dir/tests_repo\nconfigfile: pyproject.toml\nplugins: allure-pytest-2.14.2, xdist-3.7.0, instafail-0.5.0, anyio-4.9.0, timeout-2.4.0, check-2.5.3, mock-3.14.1, cov-6.1.1\ncollected 1 item\n\ntest/test_parent.py::test_parent FAILED                                                        [100%]\n\n============================================== FAILURES ==============================================\n____________________________________________ test_parent _____________________________________________\n\n    def test_parent():\n        args: list[str] = [\n            \"-s\",\n            f\"{Path(__file__)}::test_child\",\n        ]\n        result = pytest.main(args)\n\u003e       assert not result\nE       assert not \u003cExitCode.TESTS_FAILED: 1\u003e\n\ntest/test_parent.py:12: AssertionError\n---------------------------------------- Captured stdout call ----------------------------------------\n============================= test session starts ==============================\nplatform darwin -- Python 3.13.5, pytest-8.4.0, pluggy-1.6.0 -- /example_dir/Library/Caches/pypoetry/virtualenvs/tests_repo-CJ2ygyH8-py3.13/bin/python\ncachedir: .pytest_cache\nrootdir: /example_dir/tests_repo\nconfigfile: pyproject.toml\nplugins: allure-pytest-2.14.2, xdist-3.7.0, instafail-0.5.0, anyio-4.9.0, timeout-2.4.0, check-2.5.3, mock-3.14.1, cov-6.1.1\ncollecting ... collected 1 item\n\ntest/test_parent.py::test_child PASSED\ntest/test_parent.py::test_child ERROR\n\n==================================== ERRORS ====================================\n_______________________ ERROR at teardown of test_child ________________________\n\nself = \u003callure_commons._allure.fixture object at 0x1027574d0\u003e, args = ()\nkwargs = {}\n\n    def __call__(self, *args, **kwargs):\n        self.parameters = func_parameters(self._fixture_function, *args, **kwargs)\n\n\u003e       with self:\n             ^^^^\n\n../../Library/Caches/pypoetry/virtualenvs/tests_repo-CJ2ygyH8-py3.13/lib/python3.13/site-packages/allure_commons/_allure.py:230:\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _\n../../Library/Caches/pypoetry/virtualenvs/tests_repo-CJ2ygyH8-py3.13/lib/python3.13/site-packages/allure_commons/_allure.py:240: in __exit__\n    plugin_manager.hook.stop_fixture(parent_uuid=self._parent_uuid,\n../../Library/Caches/pypoetry/virtualenvs/tests_repo-CJ2ygyH8-py3.13/lib/python3.13/site-packages/allure_pytest/listener.py:66: in stop_fixture\n    self.allure_logger.stop_after_fixture(uuid,\n../../Library/Caches/pypoetry/virtualenvs/tests_repo-CJ2ygyH8-py3.13/lib/python3.13/site-packages/allure_commons/reporter.py:109: in stop_after_fixture\n    self._update_item(uuid, **kwargs)\n../../Library/Caches/pypoetry/virtualenvs/tests_repo-CJ2ygyH8-py3.13/lib/python3.13/site-packages/allure_commons/reporter.py:62: in _update_item\n    item = self._items[uuid] if uuid else self._items[next(reversed(self._items))]\n           ^^^^^^^^^^^^^^^^^\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _\n\nself = \u003callure_commons.reporter.ThreadContextItems object at 0x10264b4d0\u003e\nitem = '5073499a-d95d-40a6-a635-36507b26b451'\n\n    def __getitem__(self, item):\n\u003e       return self.thread_context.__getitem__(item)\n               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nE       KeyError: '5073499a-d95d-40a6-a635-36507b26b451'\n\n../../Library/Caches/pypoetry/virtualenvs/tests_repo-CJ2ygyH8-py3.13/lib/python3.13/site-packages/allure_commons/reporter.py:33: KeyError\n=========================== short test summary info ============================\nERROR test/test_parent.py::test_child - KeyError: '5073499a-d95d-40a6-a635-36...\n========================== 1 passed, 1 error in 0.05s ==========================\n====================================== short test summary info =======================================\nFAILED test/test_parent.py::test_parent - assert not \u003cExitCode.TESTS_FAILED: 1\u003e\n========================================= 1 failed in 0.14s ==========================================\n```","author":{"url":"https://github.com/sashko1988","@type":"Person","name":"sashko1988"},"datePublished":"2025-10-09T16:15:30.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/881/allure-python/issues/881"}