fix: carry identity in extras, refile rom b

tests/test_extra_identity.py

@@ -0,0 +1,67 @@
+"""A core extra keeps every field that identifies its content.
+
+Each hop kept its own subset: min_size and validation were lost, so
+np2kai's bios.rom (98304 bytes minimum, size checked) resolved by name to an
+IBM PCjr ROM and shipped in four packs, and dosbox's SC-55 ROMs to a
+Galaksija ROM and a PS2 ROM2.BIN.
+"""
+
+from __future__ import annotations
+
+import sys
+import unittest
+from pathlib import Path
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(REPO_ROOT / "scripts"))
+
+from common import PROFILE_IDENTITY_FIELDS  # noqa: E402
+
+ENTRY = {
+    "name": "bios.rom",
+    "path": "np2kai/bios.rom",
+    "min_size": 98304,
+    "validation": ["size"],
+    "aliases": ["BIOS.ROM"],
+    "crc32": "12345678",
+}
+
+
+class IdentityTravels(unittest.TestCase):
+    def test_report_and_extra_keep_every_identity_field(self):
+        from packextras import _collect_emulator_extras
+        from verify import find_undeclared_files
+
+        profile = {
+            "emulator": "NP2kai",
+            "type": "libretro",
+            "systems": ["nec-pc-98"],
+            "files": [dict(ENTRY)],
+        }
+        config = {"cores": ["np2kai"], "systems": {}}
+        db = {
+            "files": {"s1": {"name": "bios.rom", "path": "bios/NEC/PC-98/bios.rom",
+                             "size": 100000, "sha1": "s1", "md5": "m1", "crc32": "12345678"}},
+            "indexes": {"by_name": {"bios.rom": ["s1"]}, "by_md5": {"m1": "s1"},
+                        "by_crc32": {"12345678": "s1"}},
+        }
+        report = find_undeclared_files(config, "emulators", db, emu_profiles={"np2kai": profile})
+        extras = _collect_emulator_extras(
+            config, "emulators", db, set(), "", {"np2kai": profile}, include_all=True
+        )
+        for label, item in (("report", report[0]), ("extra", extras[0])):
+            for field in ("min_size", "validation", "aliases", "crc32"):
+                with self.subTest(where=label, field=field):
+                    self.assertEqual(item.get(field), ENTRY[field])
+
+    def test_every_hop_reads_the_shared_list(self):
+        for name in ("packextras.py", "verify.py"):
+            source = (REPO_ROOT / "scripts" / name).read_text(encoding="utf-8")
+            with self.subTest(module=name):
+                self.assertIn("PROFILE_IDENTITY_FIELDS", source)
+                self.assertNotIn('("sha1", "md5", "sha256", "crc32", "size"', source)
+        self.assertIn("validation", PROFILE_IDENTITY_FIELDS)
+
+
+if __name__ == "__main__":
+    unittest.main()