# tests/test_gates.py
"""Gates structurels : torch ne vit que dans fractus_vorax/model/."""
from pathlib import Path

REPO = Path(__file__).parent.parent


def test_torch_isolated_in_model_dir():
    package = REPO / "fractus_vorax"
    offenders = []
    for py in package.rglob("*.py"):
        if py.parent == package / "model":
            continue  # autorisé ici et ici seulement
        text = py.read_text(encoding="utf-8")
        if "import torch" in text or "from torch" in text:
            offenders.append(str(py.relative_to(REPO)))
        # imports dynamiques : importlib.import_module("torch"),
        # __import__("torch") — même confinement, motif "torch" + appel.
        elif "torch" in text and ("import_module" in text or "__import__" in text):
            offenders.append(str(py.relative_to(REPO)))
        # tokenizers : même confinement que torch (fractus_vorax/model/ seulement).
        if "import tokenizers" in text or "from tokenizers" in text:
            offenders.append(str(py.relative_to(REPO)))
    assert offenders == []


def test_gate_catches_dynamic_import_patterns(tmp_path):
    fake = tmp_path / "fake.py"
    fake.write_text('import importlib\nimportlib.import_module("torch")\n', encoding="utf-8")
    text = fake.read_text(encoding="utf-8")
    assert ("torch" in text and ("import_module" in text or "__import__" in text))