"""Test: script engine validation + fallback always works."""
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parent.parent))

from nexus.script_engine import (fallback_script, humanize, title_variants,  # noqa: E402
                                 validate_script)


def test_fallback_short():
    s = fallback_script("The lost city of Atlantis", "short")
    assert len(s.split()) >= 120
    assert "wrong" in s.lower() or "truth" in s.lower()


def test_fallback_long():
    s = fallback_script("The lost city of Atlantis", "long")
    assert len(s.split()) >= 650
    assert "[SEG1]" in s and "[CTA]" in s


def test_validation_passes_fallback():
    v = validate_script(fallback_script("X", "short"), "short")
    assert v["pass"], v


def test_humanize():
    assert "use" in humanize("We will utilize the data")


def test_title_variants():
    ts = title_variants("Atlantis", "short")
    assert len(ts) >= 5
    assert all(len(t) < 100 for t in ts)