Preserve nested model types in prediction requests

tests/conftest.py

@@ -0,0 +1,23 @@
+from pathlib import Path
+from typing import Iterator
+
+import pytest
+from great_ai import RouteConfig, configure, context
+from great_ai.large_file import LargeFileBase, LargeFileLocal
+
+
+@pytest.fixture
+def isolated_context(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> Iterator[None]:
+    monkeypatch.chdir(tmp_path)
+    monkeypatch.setattr(context, "_context", None)
+    monkeypatch.setattr(context, "DEFAULT_TRACING_DATABASE_CONFIG_PATHS", {})
+    monkeypatch.setattr(context, "DEFAULT_LARGE_FILE_CONFIG_PATHS", {})
+    for implementation in (LargeFileBase, LargeFileLocal):
+        monkeypatch.setattr(implementation, "cache_path", tmp_path / "cache")
+        monkeypatch.setattr(implementation, "max_cache_size", None)
+    configure(
+        disable_se4ml_banner=True,
+        should_log_exception_stack=False,
+        route_config=RouteConfig(dashboard_enabled=False),
+    )
+    yield