"""``hermes sessions list`` tells the user when ``--limit`` cut the listing (#111989).

The cap is applied inside the SQL query, so the lister probes one row past it; the footer
must appear only when that probe row exists.
"""

from argparse import Namespace

import pytest

from hermes_cli import sessions_cmd


@pytest.fixture
def db(tmp_path):
    from hermes_state import SessionDB
    db = SessionDB(db_path=tmp_path / "state.db")
    for i in range(6):
        db.create_session(f"sess_{i}", "cli")
        db.append_message(f"sess_{i}", "user", f"hello {i}")
    yield db
    db.close()


def _list(db, limit, capsys):
    sessions_cmd._cmd_list(db, Namespace(limit=limit, source=None, workspace=None))
    return capsys.readouterr().out


def test_footer_when_more_sessions_than_limit(db, capsys):
    out = _list(db, 4, capsys)
    ids = [line.split()[-1] for line in out.splitlines() if line.startswith("hello")]
    assert len(ids) == 4  # the probe row is never rendered
    assert "--limit 8" in out


def test_no_footer_when_listing_fits(db, capsys):
    assert "more" not in _list(db, 6, capsys)  # exactly the limit
    assert "more" not in _list(db, 20, capsys)  # fewer than the limit