Function test_histmanager_thread_start_failure_uses_memory

tests/test_history.py:324–350

(
    hmmax2, tmp_path, monkeypatch, caplog
)

def test_histmanager_thread_start_failure_uses_memory(
    hmmax2, tmp_path, monkeypatch, caplog
):
    def fail_start(self):
        raise RuntimeError("thread unavailable")

    monkeypatch.setattr("IPython.core.history.HistorySavingThread.start", fail_start)

    hm = None
    try:
        hm = HistoryManager(shell=get_ipython(), hist_file=tmp_path / "history.sqlite")
        assert hm.hist_file == ":memory:"
        assert hm.db.execute("PRAGMA database_list").fetchall() == [(0, "main", "")]
        assert hm.save_thread is None

        hm.store_inputs(1, "a = 1")
        hm.writeout_cache()
        assert list(hm.get_tail(1, include_latest=True)) == [
            (hm.session_number, 1, "a = 1")
        ]
    finally:
        if hm is not None:
            hm.end_session()
            hm.db.close()
        hm = None
        caplog.clear()
        gc.collect()


def test_histmanager_disabled(hmmax2):