test: add pytest coverage for plugin utilities

tests/test_config.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from afs_scawful.config import load_training_paths, load_training_resources
+
+
+def test_load_training_paths_expands_paths(tmp_path: Path) -> None:
+    config_path = tmp_path / "training_paths.toml"
+    config_path.write_text(
+        "[paths]\n"
+        "training_root = \"~/training\"\n"
+        "datasets = \"~/training/datasets\"\n",
+        encoding="utf-8",
+    )
+
+    data = load_training_paths(config_path=config_path)
+    paths = data["paths"]
+    assert paths["training_root"] == (Path.home() / "training").resolve()
+    assert paths["datasets"] == (Path.home() / "training" / "datasets").resolve()
+
+
+def test_load_training_resources_expands_roots(tmp_path: Path) -> None:
+    config_path = tmp_path / "training_resources.toml"
+    config_path.write_text(
+        "[resource_discovery]\n"
+        f"resource_roots = [\"{tmp_path}\"]\n",
+        encoding="utf-8",
+    )
+
+    data = load_training_resources(config_path=config_path)
+    roots = data["resource_discovery"]["resource_roots"]
+    assert roots == [tmp_path.resolve()]