from crossvenue_arbx.fuzz import ScenarioGenerator, ReplayRunner


def test_replay_determinism_same_seed():
    gen = ScenarioGenerator(seed=42)
    events = gen.generate(steps=20)

    runner1 = ReplayRunner()
    log1, final1 = runner1.run(events)

    runner2 = ReplayRunner()
    # regenerate to ensure fresh objects but same seed
    gen2 = ScenarioGenerator(seed=42)
    events2 = gen2.generate(steps=20)
    log2, final2 = runner2.run(events2)

    assert log1 == log2, "Replay logs must be identical for same seed"
    assert final1 == final2, "Final plan signature must match for same seed"


def test_replay_variation_different_seed():
    gen = ScenarioGenerator(seed=1)
    events = gen.generate(steps=20)
    runner = ReplayRunner()
    log1, final1 = runner.run(events)

    genb = ScenarioGenerator(seed=2)
    eventsb = genb.generate(steps=20)
    runnerb = ReplayRunner()
    log2, final2 = runnerb.run(eventsb)

    # usually different seeds will produce different logs or final plan
    assert (log1 != log2) or (final1 != final2)