import pytest
from spriteforge.manifest import ManifestInvalid, load_manifest

def test_future_manifest_version_is_rejected(tmp_path):
    path=tmp_path/"future.yaml"
    path.write_text("version: 2\nfloor:\n  backend: procedural\n  generator: floor\n")
    with pytest.raises(ManifestInvalid,match="only manifest version 1"): load_manifest(path)