feat: build CouchOS Melee appliance

tests/test_discovery.py

@@ -0,0 +1,23 @@
+from pathlib import Path
+import unittest
+
+from couchd.discovery import AllowlistError, allowlisted_target
+
+
+class AllowlistTests(unittest.TestCase):
+    def test_rejects_target_outside_allowed_roots(self) -> None:
+        with self.assertRaises(AllowlistError):
+            allowlisted_target(
+                candidate=Path("/tmp/SlippiLauncher.AppImage"),
+                allowed_roots=[Path("/home/couch/Applications")],
+                allowed_names={"SlippiLauncher.AppImage"},
+            )
+
+    def test_accepts_allowed_target_name_under_allowed_root(self) -> None:
+        target = allowlisted_target(
+            candidate=Path("/home/couch/Applications/SlippiLauncher.AppImage"),
+            allowed_roots=[Path("/home/couch/Applications")],
+            allowed_names={"SlippiLauncher.AppImage"},
+        )
+
+        self.assertEqual(target, Path("/home/couch/Applications/SlippiLauncher.AppImage"))