Create configured model cache directories

tests/large_file/test_storage_safety.py

@@ -0,0 +1,22 @@
+from pathlib import Path
+from typing import Iterator
+
+import pytest
+from great_ai.large_file import LargeFileBase, LargeFileLocal
+
+
+@pytest.fixture(autouse=True)
+def storage(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> Iterator[None]:
+    for implementation in (LargeFileBase, LargeFileLocal):
+        monkeypatch.setattr(implementation, "cache_path", tmp_path / "cache")
+        monkeypatch.setattr(implementation, "max_cache_size", None)
+    yield
+
+
+def test_configured_cache_directory_is_created(
+    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr(LargeFileLocal, "cache_path", tmp_path / "custom-cache")
+    with LargeFileLocal("model", "w") as file:
+        file.write("weights")
+    assert LargeFileLocal("model").get().read_text() == "weights"