from midnight_static.fixtures import fixture_script
from midnight_static.schema import Genre, Line, Script


def test_fixture_script_is_valid():
    script = fixture_script("a phone that only receives calls from 1962")

    script.validate()

    assert script.genre == Genre.WEIRD
    assert len(script.cast) >= 2
    assert len(script.scenes) == 2


def test_schema_rejects_unknown_cast_reference():
    script = fixture_script("static")
    broken_scene = script.scenes[0]
    broken = Script(
        title=script.title,
        logline=script.logline,
        genre=script.genre,
        cast=script.cast,
        scenes=[
            type(broken_scene)(
                title=broken_scene.title,
                sfx=broken_scene.sfx,
                lines=[Line(cast="missing", text="No one can say this.")],
            )
        ],
        music=script.music,
        estimated_seconds=script.estimated_seconds,
    )

    try:
        broken.validate()
    except ValueError as exc:
        assert "unknown cast" in str(exc)
    else:
        raise AssertionError("expected validation to fail")