from chat.db.connection import open_db
from chat.db.migrate import apply_migrations


def test_apply_migrations_creates_meta_table(tmp_path):
    db = tmp_path / "test.db"
    apply_migrations(db)
    with open_db(db) as conn:
        row = conn.execute(
            "SELECT value FROM meta WHERE key = 'schema_version'"
        ).fetchone()
        assert row is not None
        assert int(row[0]) >= 1


def test_apply_migrations_idempotent(tmp_path):
    db = tmp_path / "test.db"
    apply_migrations(db)
    apply_migrations(db)  # second call must be a no-op
    with open_db(db) as conn:
        count = conn.execute("SELECT COUNT(*) FROM meta").fetchone()[0]
        assert count == 1