fix: resolve profile entries with their owner

tests/test_owner_resolution.py

@@ -0,0 +1,65 @@
+"""Every reader of a profile entry names its owner, as the builder does.
+
+The resolver prefers the owning profile's copy when a name has several. The
+builder passes `source_profile`; the site's consumer index, the slot claims
+and the agnostic scan did not, and resolved 95 entries to other files: the
+site credited aethersx2's game_controller_db.txt to armsx2 and left the copy
+armsx2's pack ships without a reader, and MAME's neogeo.zip without MAME.
+"""
+
+from __future__ import annotations
+
+import sys
+import unittest
+from pathlib import Path
+
+REPO_ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(REPO_ROOT / "scripts"))
+
+import cross_reference  # noqa: E402
+import slots  # noqa: E402
+from common import (  # noqa: E402
+    build_zip_contents_index,
+    load_database,
+    load_emulator_profiles,
+)
+
+
+class ReadersNameTheOwner(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        db_path = REPO_ROOT / "database.json"
+        if not db_path.exists():
+            raise unittest.SkipTest("database.json is not built")
+        cls.db = load_database(str(db_path))
+        cls.profiles = load_emulator_profiles(str(REPO_ROOT / "emulators"))
+        cls.sha1_by_path = {r["path"]: s for s, r in cls.db["files"].items()}
+
+    def test_the_site_credits_the_copy_the_pack_ships(self):
+        consumers = cross_reference.FileConsumers(
+            self.db, build_zip_contents_index(self.db)
+        )
+        consumers.add_emulators(self.profiles)
+        for path, owner in (
+            ("bios/Other/armsx2/game_controller_db.txt", "armsx2"),
+            ("bios/Arcade/MAME/neogeo.zip", "mame"),
+        ):
+            with self.subTest(path=path):
+                sha1 = self.sha1_by_path.get(path)
+                if sha1 is None:
+                    self.skipTest(f"{path} is not collected")
+                self.assertIn(owner, consumers.emulators.get(sha1, set()))
+
+    def test_slot_claims_resolve_the_owners_tree(self):
+        claims = slots.profile_claims({"pcem": self.profiles["pcem"]}, self.db)
+        held = {
+            claim.destination.rsplit("/", 1)[-1]: claim.local_path for claim in claims
+        }
+        local = held.get("ide_xt.bin")
+        if local is None:
+            self.skipTest("ide_xt.bin is not claimed")
+        self.assertTrue(local.startswith("bios/Other/pcem/"), local)
+
+
+if __name__ == "__main__":
+    unittest.main()