fix: container volumes

tests/test_backend.py

@@ -23,7 +23,12 @@ from progression_backend.modlist import (
 )
 from progression_backend.refresh import RefreshCoordinator, RefreshService
 from progression_backend.steam_api import WorkshopDetails
-from progression_backend.workshop import SteamCmdBatchResult, parse_about_xml, utc_now
+from progression_backend.workshop import (
+    SteamCmdBatchResult,
+    SteamCmdRunner,
+    parse_about_xml,
+    utc_now,
+)
 
 
 class FakeSteam:
@@ -176,6 +181,22 @@ class BackendTests(unittest.TestCase):
             self.assertEqual(parsed.package_id, "author.mod")
             self.assertEqual(parsed.display_name, "A & B")
 
+    def test_steamcmd_runner_prepares_writable_workshop_path(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            content_dir = (
+                Path(directory)
+                / "steamapps"
+                / "workshop"
+                / "content"
+                / "294100"
+            )
+            runner = SteamCmdRunner("steamcmd", content_dir, 60)
+            runner.ensure_workshop_writable()
+            self.assertTrue(content_dir.is_dir())
+            self.assertFalse(
+                (content_dir.parent.parent / ".progression-write-test").exists()
+            )
+
     def test_rml_uses_workshop_id_and_escapes_names(self) -> None:
         payload = generate_rml(
             [