diff --git a/tests/test_mame_ref_audit.py b/tests/test_mame_ref_audit.py
index 07f4f3b3..69d60ae4 100644
--- a/tests/test_mame_ref_audit.py
+++ b/tests/test_mame_ref_audit.py
@@ -117,9 +117,14 @@ class TestCorpusStaysCorrect(unittest.TestCase):
             self.skipTest("no upstream cache")
         for name in ("mame", "mamearcade", "mamemess", "groovymame"):
             with self.subTest(emulator=name):
-                findings, agreed, _ = mame_ref_audit.audit(
-                    name, str(ROOT / "emulators"), str(cache), True
-                )
+                try:
+                    findings, agreed, _ = mame_ref_audit.audit(
+                        name, str(ROOT / "emulators"), str(cache), True
+                    )
+                except mame_ref_audit.upstream.NotCachedError as exc:
+                    # A cache that holds some drivers and not others is as
+                    # cold as an empty one for this profile.
+                    self.skipTest(f"{name}: {exc}")
                 if not agreed and not findings:
                     self.skipTest(f"{name}: driver sources not cached")
                 self.assertEqual(
diff --git a/wiki/testing-guide.md b/wiki/testing-guide.md
index d30186e0..2a72186e 100644
--- a/wiki/testing-guide.md
+++ b/wiki/testing-guide.md
@@ -56,7 +56,7 @@ Every module in `tests/`, by the area it guards.
 | Handheld port | stubbed PortMaster dialogs, fake installer | `test_port` |
 | Truth and native export | synthetic + cached originals | `test_export_counts`, `test_export_native_layer`, `test_export_report`, `test_exporters`, `test_truth_data_dir_readers`, `test_truth_diff`, `test_truth_layout` |
 | Scrapers, upstream and provenance | inline sources, synthetic | `test_check_freshness`, `test_dedup`, `test_elec_scrapers`, `test_fbneo_parser`, `test_find_pinned_revision`, `test_hash_merge`, `test_launchers`, `test_launchers_emudeck`, `test_launchers_recalbox`, `test_launchers_retrobat`, `test_launchers_retrodeck`, `test_launchers_retropie`, `test_launchers_rocknix`, `test_mame_devices`, `test_mame_parser`, `test_mame_ref_audit`, `test_profile_sync`, `test_provenance`, `test_refresh_data_dirs`, `test_refresh_failures`, `test_refresh_stale`, `test_retrodeck_scraper_errors`, `test_romset_recipes`, `test_scraper_contract`, `test_upstream`, `test_upstream_index` |
-| Site, docs and repository contracts | rendered pages, sources | `test_contributing_text`, `test_coverage_cache`, `test_data_dir_refs`, `test_dataclass_defaults`, `test_doc_pages`, `test_doc_surfaces`, `test_optional_dependencies`, `test_prose_style`, `test_site_availability`, `test_site_copy`, `test_site_content_data`, `test_site_cores`, `test_site_emulator_page`, `test_site_exports`, `test_site_funnel`, `test_site_images`, `test_site_platform_hashes`, `test_site_render`, `test_site_system_links`, `test_site_validation`, `test_site_weight`, `test_site_write`, `test_validate_pr`, `test_validate_pr_flow`, `test_validate_pr_hashes`, `test_workflow_paths` |
+| Site, docs and repository contracts | rendered pages, sources | `test_contributing_text`, `test_coverage_cache`, `test_data_dir_refs`, `test_dataclass_defaults`, `test_doc_pages`, `test_doc_surfaces`, `test_optional_dependencies`, `test_prose_style`, `test_schema_semantic_gate`, `test_site_availability`, `test_site_content_data`, `test_site_copy`, `test_site_cores`, `test_site_emulator_page`, `test_site_exports`, `test_site_funnel`, `test_site_images`, `test_site_platform_hashes`, `test_site_render`, `test_site_system_links`, `test_site_validation`, `test_site_weight`, `test_site_write`, `test_validate_pr`, `test_validate_pr_flow`, `test_validate_pr_hashes`, `test_workflow_paths` |
 
 ## Test architecture