fix: file the SF-7000 rom under Sega

sf7000.rom is read only by the sega-sf7000 entries of blueMSX. It sat in bios/Microsoft/MSX because blueMSX keeps its machine folders together, which is a pack destination, not where the collection files a dump.

tests/test_sega_filing.py

@@ -0,0 +1,49 @@
+"""Sega ROMs live under bios/Sega.
+
+The SF-7000 disk unit ROM, which only the sega-sf7000 entries read, sat in
+bios/Microsoft/MSX because blueMSX keeps its machine folders together. The
+collection files a dump under the maker of the machine it belongs to, and
+the blueMSX layout is a destination the pack writes, not a storage rule.
+Reads the repository.
+"""
+
+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"))
+
+
+class SegaFilesStayUnderSega(unittest.TestCase):
+    def test_no_sega_only_file_under_msx(self):
+        folder = REPO_ROOT / "bios" / "Microsoft" / "MSX"
+        if not folder.is_dir():
+            self.skipTest("bios/Microsoft/MSX is absent")
+        from common import load_emulator_profiles
+
+        systems: dict[str, set[str]] = {}
+        for profile in load_emulator_profiles(str(REPO_ROOT / "emulators")).values():
+            for entry in profile.get("files") or []:
+                if not isinstance(entry, dict) or not entry.get("system"):
+                    continue
+                for name in [entry.get("name", ""), *(entry.get("aliases") or [])]:
+                    key = Path(str(name)).name.lower()
+                    systems.setdefault(key, set()).add(str(entry["system"]))
+        misfiled = sorted(
+            str(path.relative_to(folder))
+            for path in folder.rglob("*")
+            if path.is_file()
+            and systems.get(path.name.lower())
+            and all(s.startswith("sega-") for s in systems[path.name.lower()])
+        )
+        self.assertEqual(misfiled, [])
+
+    def test_sf7000_rom_is_filed_under_sega(self):
+        self.assertTrue((REPO_ROOT / "bios" / "Sega" / "SF-7000" / "sf7000.rom").is_file())
+
+
+if __name__ == "__main__":
+    unittest.main()

wiki/testing-guide.md

@@ -38,7 +38,7 @@ Every module in `tests/`, by the area it guards.
 | Area | Fixtures | Modules |
 |------|----------|---------|
 | Core regression suites | synthetic | `test_e2e`, `test_audit_regressions`, `test_tool_messages` |
-| File resolution and identity | synthetic + collection | `test_adler32_resolution`, `test_agnostic_scan`, `test_agnostic_scan_mode`, `test_agnostic_scope`, `test_agnostic_substitute`, `test_archive_choice`, `test_bios_companions`, `test_bundled_identity`, `test_casefold_cache`, `test_db_aliases`, `test_declared_names`, `test_derivations`, `test_directory_entries`, `test_extra_identity`, `test_foreign_tree`, `test_foreign_tree_names`, `test_frontend_digest`, `test_game_data_homonyms`, `test_hashing`, `test_identity`, `test_md5_pack_context`, `test_name_tiebreak`, `test_nec_filing`, `test_owner_resolution`, `test_path_suffix`, `test_resolution_evidence`, `test_shipped_content`, `test_twin_declarations`, `test_validated_choice`, `test_variant_choice`, `test_variant_identity`, `test_zipped_member` |
+| File resolution and identity | synthetic + collection | `test_adler32_resolution`, `test_agnostic_scan`, `test_agnostic_scan_mode`, `test_agnostic_scope`, `test_agnostic_substitute`, `test_archive_choice`, `test_bios_companions`, `test_bundled_identity`, `test_casefold_cache`, `test_db_aliases`, `test_declared_names`, `test_derivations`, `test_directory_entries`, `test_extra_identity`, `test_foreign_tree`, `test_foreign_tree_names`, `test_frontend_digest`, `test_game_data_homonyms`, `test_hashing`, `test_identity`, `test_md5_pack_context`, `test_name_tiebreak`, `test_nec_filing`, `test_owner_resolution`, `test_path_suffix`, `test_resolution_evidence`, `test_sega_filing`, `test_shipped_content`, `test_twin_declarations`, `test_validated_choice`, `test_variant_choice`, `test_variant_identity`, `test_zipped_member` |
 | Verification, cross-reference and profile checks | synthetic + profiles | `test_crypto_aes`, `test_crypto_unique_data`, `test_crypto_verify`, `test_case_insensitive_platforms`, `test_checks_have_values`, `test_core_file_fills_declaration`, `test_core_size_refusal`, `test_cross_reference_sources`, `test_file_consumers`, `test_fileless_audit`, `test_gap_settlement`, `test_hidden_extras`, `test_launcher_aliases`, `test_launcher_layer`, `test_native_mode`, `test_no_case_collisions`, `test_path_conflict_status`, `test_path_null_copies`, `test_profile_checks`, `test_profile_repositories`, `test_romm_hash_rule`, `test_shared_groups`, `test_standalone_mode`, `test_undeclared_dedup`, `test_unplaced_extras`, `test_validation_scope`, `test_verify_all_dir`, `test_verify_emulator_evidence`, `test_verify_listing`, `test_verify_pack_choice`, `test_verify_release_asset` |
 | Packs and manifests | synthetic + real packs | `test_artifact_lock`, `test_atomic_artifacts`, `test_batocera_cores`, `test_deterministic_zip`, `test_emulator_pack_counts`, `test_finalize_pack_names`, `test_large_file_cache`, `test_libretro_layout`, `test_manifest_entry`, `test_pack_conformance_dirs`, `test_pack_core_extras`, `test_pack_counts`, `test_pack_destinations`, `test_pack_failures`, `test_pack_file_names`, `test_pack_grouping`, `test_pack_integrity`, `test_pack_member_identity`, `test_pack_readme`, `test_platform_inheritance`, `test_platform_keys`, `test_required_only_archives`, `test_required_only_twins`, `test_split_extras`, `test_split_names`, `test_split_pack`, `test_system_pack_extras`, `test_system_pack_parity`, `test_torrentzip`, `test_which_pack` |
 | Slots and regions | synthetic + profiles | `test_region`, `test_region_agnostic_scan`, `test_region_groups`, `test_region_held`, `test_region_platform_index`, `test_region_required_only`, `test_slot`, `test_slots`, `test_slots_shipped_file` |