Performance: use guardian's identity indexes for page permission lookups

The per-page grant lookups filtered only on content type and object_pk. No guardian index leads with object_pk, so MariaDB read every grant of the model to find the 50 documents on a page, three times per list request.

Also restrict the grants to existing users and groups, which changes no result but lets the (identity, content_type, object_pk) indexes be used.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src-ui/src/app/components/common/custom-fields-dropdown/custom-fields-dropdown.component.scss

@@ -1,3 +1,10 @@
 .custom-fields-dropdown {
     min-width: 300px;
+
+    // correct position on mobile
+    @media (max-width: 575.98px) {
+        &.show {
+            margin-left: -245px !important;
+        }
+    }
 }

src-ui/src/app/components/document-detail/document-detail.component.html

@@ -308,7 +308,7 @@
                   </tr>
                   <tr class="align-middle">
                     <td i18n>Original SHA256 checksum</td>
-                    <td><span class="badge bg-light text-dark font-monospace text-wrap text-break text-start">{{metadata()?.original_checksum}}</span></td>
+                    <td><span class="badge bg-light font-monospace text-wrap text-break text-start">{{metadata()?.original_checksum}}</span></td>
                   </tr>
                   <tr>
                     <td i18n>Original file size</td>

src/conftest.py

@@ -77,30 +77,6 @@ def _clear_django_caches() -> None:
         cache.clear()
 
 
-@pytest.fixture(autouse=True)
-def _keep_connection_open_in_atomic(monkeypatch: pytest.MonkeyPatch) -> None:
-    """Make ``close_old_connections()`` a no-op inside the test's transaction.
-
-    The Celery signal handlers call it, as a worker would between tasks. Tests
-    run inside an open atomic block, where Postgres really closes the
-    connection, taking the test transaction and every later test on the
-    worker with it. SQLite in-memory ignores the close, which hid this.
-    """
-    from django.db.backends.base.base import BaseDatabaseWrapper
-
-    original = BaseDatabaseWrapper.close_if_unusable_or_obsolete
-
-    def close_unless_atomic(self: BaseDatabaseWrapper) -> None:
-        if not self.in_atomic_block:
-            original(self)
-
-    monkeypatch.setattr(
-        BaseDatabaseWrapper,
-        "close_if_unusable_or_obsolete",
-        close_unless_atomic,
-    )
-
-
 @pytest.fixture
 def paperless_dirs(
     tmp_path: Path,

src/documents/permissions.py

@@ -291,12 +291,19 @@ def get_permission_grantees(
         "permission__codename__in": list(action_by_codename),
         "object_pk__in": [str(pk) for pk in pks],
     }
-    for perm_model, identity_field, key in (
-        (UserObjectPermission, "user_id", "users"),
-        (GroupObjectPermission, "group_id", "groups"),
+    for perm_model, identity_model, identity_field, key in (
+        (UserObjectPermission, User, "user_id", "users"),
+        (GroupObjectPermission, Group, "group_id", "groups"),
     ):
+        # Every grant belongs to an existing user or group, so restricting to
+        # them changes no result. It lets MariaDB use guardian's
+        # (identity, content_type, object_pk) index; the content type alone
+        # matches every grant of the model and is scanned in full.
         rows = (
-            perm_model.objects.filter(**grant_filter)
+            perm_model.objects.filter(
+                **{f"{identity_field}__in": identity_model.objects.values("pk")},
+                **grant_filter,
+            )
             .values_list("object_pk", "permission__codename", identity_field)
             .order_by(identity_field)
         )

src/documents/serialisers.py

@@ -397,10 +397,14 @@ class OwnedObjectSerializer(
         object_pks = list(obj.pk for obj in objects)
         pk_type = type(first_obj.pk)
 
-        def get_pks_for_permission_type(model):
+        def get_pks_for_permission_type(model, identity_field, identity_model):
+            # Restricting to existing users/groups changes no result but lets
+            # MariaDB use guardian's (identity, content_type, object_pk) index
+            # instead of scanning every grant of the model.
             return map(
                 pk_type,  # coerce the pk to be the same type of the provided objects
                 model.objects.filter(
+                    **{f"{identity_field}__in": identity_model.objects.values("pk")},
                     content_type=ctype,
                     object_pk__in=object_pks,
                 )
@@ -410,8 +414,16 @@ class OwnedObjectSerializer(
 
         UserObjectPermission = get_user_obj_perms_model()
         GroupObjectPermission = get_group_obj_perms_model()
-        user_permission_pks = get_pks_for_permission_type(UserObjectPermission)
-        group_permission_pks = get_pks_for_permission_type(GroupObjectPermission)
+        user_permission_pks = get_pks_for_permission_type(
+            UserObjectPermission,
+            "user_id",
+            User,
+        )
+        group_permission_pks = get_pks_for_permission_type(
+            GroupObjectPermission,
+            "group_id",
+            Group,
+        )
 
         return set(user_permission_pks) | set(group_permission_pks)
 

src/documents/tests/test_api_custom_fields.py

@@ -1062,7 +1062,7 @@ class TestCustomFieldsAPI(DirectoriesMixin, APITestCase):
                 "custom_fields": [
                     {
                         "field": custom_field_doclink.id,
-                        "value": [doc2.id, doc3.id, doc4.id],
+                        "value": [2, 3, 4],
                     },
                 ],
             },
@@ -1073,13 +1073,13 @@ class TestCustomFieldsAPI(DirectoriesMixin, APITestCase):
         self.assertEqual(CustomFieldInstance.objects.count(), 4)
         _cf_5 = doc2.custom_fields.first()
         assert _cf_5 is not None
-        self.assertEqual(_cf_5.value, [doc1.id])
+        self.assertEqual(_cf_5.value, [1])
         _cf_6 = doc3.custom_fields.first()
         assert _cf_6 is not None
-        self.assertEqual(_cf_6.value, [doc1.id])
+        self.assertEqual(_cf_6.value, [1])
         _cf_7 = doc4.custom_fields.first()
         assert _cf_7 is not None
-        self.assertEqual(_cf_7.value, [doc1.id])
+        self.assertEqual(_cf_7.value, [1])
 
         # Add links appends if necessary
         resp = self.client.patch(
@@ -1088,7 +1088,7 @@ class TestCustomFieldsAPI(DirectoriesMixin, APITestCase):
                 "custom_fields": [
                     {
                         "field": custom_field_doclink.id,
-                        "value": [doc1.id, doc4.id],
+                        "value": [1, 4],
                     },
                 ],
             },
@@ -1098,7 +1098,7 @@ class TestCustomFieldsAPI(DirectoriesMixin, APITestCase):
         self.assertEqual(resp.status_code, status.HTTP_200_OK)
         _cf_8 = doc4.custom_fields.first()
         assert _cf_8 is not None
-        self.assertEqual(_cf_8.value, [doc1.id, doc3.id])
+        self.assertEqual(_cf_8.value, [1, 3])
 
         # Remove one of the links, removed on other doc
         resp = self.client.patch(
@@ -1107,7 +1107,7 @@ class TestCustomFieldsAPI(DirectoriesMixin, APITestCase):
                 "custom_fields": [
                     {
                         "field": custom_field_doclink.id,
-                        "value": [doc2.id, doc3.id],
+                        "value": [2, 3],
                     },
                 ],
             },
@@ -1117,13 +1117,13 @@ class TestCustomFieldsAPI(DirectoriesMixin, APITestCase):
         self.assertEqual(resp.status_code, status.HTTP_200_OK)
         _cf_9 = doc2.custom_fields.first()
         assert _cf_9 is not None
-        self.assertEqual(_cf_9.value, [doc1.id])
+        self.assertEqual(_cf_9.value, [1])
         _cf_10 = doc3.custom_fields.first()
         assert _cf_10 is not None
-        self.assertEqual(_cf_10.value, [doc1.id, doc4.id])
+        self.assertEqual(_cf_10.value, [1, 4])
         _cf_11 = doc4.custom_fields.first()
         assert _cf_11 is not None
-        self.assertEqual(_cf_11.value, [doc3.id])
+        self.assertEqual(_cf_11.value, [3])
 
         # Removes the field entirely
         resp = self.client.patch(
@@ -1140,10 +1140,10 @@ class TestCustomFieldsAPI(DirectoriesMixin, APITestCase):
         self.assertEqual(_cf_12.value, [])
         _cf_13 = doc3.custom_fields.first()
         assert _cf_13 is not None
-        self.assertEqual(_cf_13.value, [doc4.id])
+        self.assertEqual(_cf_13.value, [4])
         _cf_14 = doc4.custom_fields.first()
         assert _cf_14 is not None
-        self.assertEqual(_cf_14.value, [doc3.id])
+        self.assertEqual(_cf_14.value, [3])
 
         # If field exists on target doc but value is None
         doc5 = Document.objects.create(
@@ -1170,7 +1170,7 @@ class TestCustomFieldsAPI(DirectoriesMixin, APITestCase):
         self.assertEqual(resp.status_code, status.HTTP_200_OK)
         _cf_15 = doc5.custom_fields.first()
         assert _cf_15 is not None
-        self.assertEqual(_cf_15.value, [doc1.id])
+        self.assertEqual(_cf_15.value, [1])
 
     def test_documentlink_patch_requires_change_permission_on_target_documents(
         self,

src/documents/tests/test_api_filter_by_custom_fields.py

@@ -628,23 +628,22 @@ class TestCustomFieldsSearch(DirectoriesMixin, APITestCase):
     # Subset check (document link field only)                   #
     # ==========================================================#
     def test_document_link_contains(self) -> None:
-        linked = {self.documents[1].id, self.documents[2].id}
         # Document link field "contains" performs a subset check.
         self._assert_query_match_predicate(
-            ["documentlink_field", "contains", sorted(linked)],
+            ["documentlink_field", "contains", [1, 2]],
             lambda document: (
                 "documentlink_field" in document
                 and document["documentlink_field"] is not None
-                and set(document["documentlink_field"]) >= linked
+                and set(document["documentlink_field"]) >= {1, 2}
             ),
         )
         # The order of IDs don't matter - this is the same as above.
         self._assert_query_match_predicate(
-            ["documentlink_field", "contains", sorted(linked, reverse=True)],
+            ["documentlink_field", "contains", [2, 1]],
             lambda document: (
                 "documentlink_field" in document
                 and document["documentlink_field"] is not None
-                and set(document["documentlink_field"]) >= linked
+                and set(document["documentlink_field"]) >= {1, 2}
             ),
         )
 

src/documents/tests/test_api_search.py

@@ -944,7 +944,7 @@ class TestDocumentSearchApi(DirectoriesMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
 
         results = response.data["results"]
-        self.assertEqual({r["id"] for r in results}, {d1.id, d2.id})
+        self.assertEqual({r["id"] for r in results}, {1, 2})
 
     @mock.patch("documents.search._backend.parse_user_query")
     def test_search_parser_bug_surfaces_as_500_not_400(self, m) -> None:
@@ -1801,7 +1801,6 @@ class TestDocumentSearchApi(DirectoriesMixin, APITestCase):
     def test_search_sorting(self) -> None:
         u1 = UserFactory(username="user1")
         u2 = UserFactory(username="user2")
-        u3 = UserFactory(username="user3")
         c1 = Correspondent.objects.create(name="corres Ax")
         c2 = Correspondent.objects.create(name="corres Cx")
         c3 = Correspondent.objects.create(name="corres Bx")
@@ -1827,7 +1826,6 @@ class TestDocumentSearchApi(DirectoriesMixin, APITestCase):
             content="test",
             archive_serial_number=1,
             title="1",
-            owner=u3,
         )
         Note.objects.create(
             note="This is a note.",
@@ -1880,14 +1878,14 @@ class TestDocumentSearchApi(DirectoriesMixin, APITestCase):
             search_query("&ordering=-num_notes"),
             [d1.id, d3.id, d2.id],
         )
-        # owner sort: ORM orders by owner_id (integer)
+        # owner sort: ORM orders by owner_id (integer); NULLs first in SQLite ASC
         self.assertListEqual(
             search_query("&ordering=owner"),
-            [d1.id, d2.id, d3.id],
+            [d3.id, d1.id, d2.id],
         )
         self.assertListEqual(
             search_query("&ordering=-owner"),
-            [d3.id, d2.id, d1.id],
+            [d2.id, d1.id, d3.id],
         )
 
     def test_search_ordering_by_score(self) -> None:

src/documents/tests/test_api_status.py

@@ -5,7 +5,6 @@ from datetime import timedelta
 from pathlib import Path
 from unittest import mock
 
-from django.db import connection
 from django.test import override_settings
 from django.utils import timezone
 from rest_framework import status
@@ -69,7 +68,7 @@ class TestSystemStatus(APITestCase):
         self.assertEqual(response.data["install_type"], "bare-metal")
         self.assertIsNotNone(response.data["storage"]["total"])
         self.assertIsNotNone(response.data["storage"]["available"])
-        self.assertEqual(response.data["database"]["type"], connection.vendor)
+        self.assertEqual(response.data["database"]["type"], "sqlite")
         self.assertIsNotNone(response.data["database"]["url"])
         self.assertEqual(response.data["database"]["status"], "OK")
         self.assertIsNone(response.data["database"]["error"])

src/documents/tests/test_bulk_edit.py

@@ -1031,7 +1031,9 @@ class TestPDFActions(DirectoriesMixin, TestCase):
         with self.assertLogs("paperless.bulk_edit", level="ERROR") as cm:
             bulk_edit.merge(doc_ids)
             error_str = cm.output[0]
-            expected_str = f"Error merging document {self.doc2.id}, it will not be included in the merge"
+            expected_str = (
+                "Error merging document 2, it will not be included in the merge"
+            )
             self.assertIn(expected_str, error_str)
 
         mock_consume_file.assert_not_called()
@@ -1191,7 +1193,7 @@ class TestPDFActions(DirectoriesMixin, TestCase):
         with self.assertLogs("paperless.bulk_edit", level="ERROR") as cm:
             bulk_edit.split(doc_ids, pages)
             error_str = cm.output[0]
-            expected_str = f"Error splitting document {self.doc2.id}"
+            expected_str = "Error splitting document 2"
             self.assertIn(expected_str, error_str)
 
         mock_consume_file.assert_not_called()

src/documents/tests/test_consumer.py

@@ -248,8 +248,8 @@ class TestConsumer(
         )
         self.assertIsNone(document.correspondent)
         self.assertIsNone(document.document_type)
-        self.assertEqual(document.filename, f"{document.pk:07}.pdf")
-        self.assertEqual(document.archive_filename, f"{document.pk:07}.pdf")
+        self.assertEqual(document.filename, "0000001.pdf")
+        self.assertEqual(document.archive_filename, "0000001.pdf")
 
         self.assertIsFile(document.source_path)
 
@@ -1127,17 +1127,17 @@ class TestConsumer(
         with self.get_consumer(settings.CONSUMPTION_DIR / "simple.png") as consumer:
             consumer.run()
 
-            doc1 = Document.objects.latest("pk")
+            doc1 = Document.objects.filter(pk=1).first()
 
         with self.get_consumer(settings.CONSUMPTION_DIR / "simple.pdf") as consumer:
             consumer.run()
 
-            doc2 = Document.objects.latest("pk")
+            doc2 = Document.objects.filter(pk=2).first()
 
         with self.get_consumer(settings.CONSUMPTION_DIR / "simple.png.pdf") as consumer:
             consumer.run()
 
-            doc3 = Document.objects.latest("pk")
+            doc3 = Document.objects.filter(pk=3).first()
 
         self.assertEqual(doc1.filename, "simple.png")
         self.assertEqual(doc1.archive_filename, "simple.pdf")

src/documents/tests/test_file_handling.py

@@ -760,9 +760,6 @@ class TestFileHandlingWithArchive(DirectoriesMixin, FileSystemAssertsMixin, Test
             archive_checksum="B",
         )
 
-        # Without a format the files are renamed to match the primary key
-        original = doc.source_path
-        archive = doc.archive_path
         self.assertIsFile(original)
         self.assertIsFile(archive)
         self.assertIsFile(doc.source_path)
@@ -981,9 +978,6 @@ class TestFileHandlingWithArchive(DirectoriesMixin, FileSystemAssertsMixin, Test
             archive_filename="0000001.pdf",
         )
 
-        # Without a format the files are renamed to match the primary key
-        original = doc.source_path
-        archive = doc.archive_path
         self.assertIsFile(original)
         self.assertIsFile(archive)
         self.assertIsFile(doc.source_path)

src/documents/tests/test_management_exporter.py

@@ -151,20 +151,6 @@ class TestExportImport(
 
         super().setUp()
 
-    def _install_sample_files(self) -> None:
-        documents_dir = Path(self.dirs.media_dir) / "documents"
-        shutil.rmtree(documents_dir)
-        install_document_samples(documents_dir)
-        # Thumbnails are located by primary key, which the database sequence
-        # does not reset between tests on PostgreSQL
-        for number, document in enumerate(
-            (self.d1, self.d2, self.d3, self.d4),
-            start=1,
-        ):
-            source = documents_dir / "thumbnails" / f"{number:07}.webp"
-            if source != document.thumbnail_path:
-                shutil.copy(source, document.thumbnail_path)
-
     def _get_document_from_manifest(self, manifest, id):
         f = list(
             filter(
@@ -218,7 +204,8 @@ class TestExportImport(
         return manifest
 
     def test_exporter(self, *, use_filename_format=False) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         num_permission_objects = Permission.objects.count()
 
@@ -321,7 +308,8 @@ class TestExportImport(
             self.assertEqual(messages.total_issue_count, 0)
 
     def test_exporter_with_filename_format(self) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         with override_settings(
             FILENAME_FORMAT="{created_year}/{correspondent}/{title}",
@@ -329,7 +317,8 @@ class TestExportImport(
             self.test_exporter(use_filename_format=True)
 
     def test_exporter_includes_share_links_and_bundles(self) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         share_link = ShareLink.objects.create(
             slug="share-link-slug",
@@ -427,7 +416,8 @@ class TestExportImport(
             )
 
     def test_update_export_changed_time(self) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         self._do_export()
         self.assertIsFile(self.target / "manifest.json")
@@ -462,7 +452,8 @@ class TestExportImport(
         self.assertEqual(st_mtime_3, st_mtime_4)
 
     def test_update_export_changed_checksum(self) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         self._do_export()
 
@@ -488,7 +479,8 @@ class TestExportImport(
         self.assertIsFile(self.target / "manifest.json")
 
     def test_update_export_deleted_document(self) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         manifest = self._do_export()
 
@@ -519,7 +511,8 @@ class TestExportImport(
 
     @override_settings(FILENAME_FORMAT="{title}/{correspondent}")
     def test_update_export_changed_location(self) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         self._do_export(use_filename_format=True)
         self.assertIsFile(self.target / "wow1" / "c.pdf")
@@ -560,7 +553,8 @@ class TestExportImport(
             - Zipfile is created
             - Zipfile contains exported files
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         args = ["document_exporter", self.target, "--zip"]
 
@@ -588,7 +582,8 @@ class TestExportImport(
             - Zipfile is created
             - Zipfile contains exported files
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         args = ["document_exporter", self.target, "--zip", "--use-filename-format"]
 
@@ -623,7 +618,8 @@ class TestExportImport(
             - Zipfile contains exported files
             - The existing file and directory in target are removed
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         # Create stuff in target directory
         existing_file = self.target / "test.txt"
@@ -718,7 +714,8 @@ class TestExportImport(
             - Manifest.json doesn't contain information about archive files
             - Documents can be imported again
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         manifest = self._do_export()
         has_archive = False
@@ -760,7 +757,8 @@ class TestExportImport(
             - Manifest.json doesn't contain information about thumbnails
             - Documents can be imported again
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         manifest = self._do_export()
         has_thumbnail = False
@@ -804,7 +802,8 @@ class TestExportImport(
             - Main manifest.json file doesn't contain information about documents
             - Documents can be imported again
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         manifest = self._do_export(split_manifest=True)
         has_document = False
@@ -828,7 +827,8 @@ class TestExportImport(
             self.assertEqual(CustomFieldInstance.objects.count(), 1)
 
     def _export_import_barcodes(self, *, split_manifest: bool) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
         DocumentBarcodeFactory(document=self.d1, value="https://example.com")
         DocumentBarcodeFactory(document=self.d2, page=2, value="DE8937")
 
@@ -863,7 +863,8 @@ class TestExportImport(
         THEN:
             - Documents can be imported again
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         self._do_export(use_folder_prefix=True)
 
@@ -889,7 +890,8 @@ class TestExportImport(
         THEN:
             - Documents can be imported again
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         self._do_export(use_folder_prefix=True, split_manifest=True)
 
@@ -915,7 +917,8 @@ class TestExportImport(
             - ContentType & Permission objects are not deleted, db transaction rolled back
         """
 
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         num_content_type_objects = ContentType.objects.count()
         num_permission_objects = Permission.objects.count()
@@ -951,7 +954,8 @@ class TestExportImport(
             self.assertEqual(Permission.objects.count(), num_permission_objects + 1)
 
     def test_exporter_with_auditlog_disabled(self) -> None:
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         with override_settings(
             AUDIT_LOG_ENABLED=False,
@@ -970,7 +974,8 @@ class TestExportImport(
             - The soft-deleted document, note, and custom field instance
               survive the round-trip with deleted_at preserved
         """
-        self._install_sample_files()
+        shutil.rmtree(Path(self.dirs.media_dir) / "documents")
+        install_document_samples(Path(self.dirs.media_dir) / "documents")
 
         # d1 has self.note and self.cfi1 attached via setUp
         self.d1.delete()

src/documents/tests/test_management_fuzzy.py

@@ -19,10 +19,6 @@ class TestFuzzyMatchCommand(TestCase):
         call_command(
             "document_fuzzy_match",
             "--no-progress-bar",
-            # The default scales with the CPU count and forks, which closes
-            # the test's database connection on PostgreSQL
-            "--processes",
-            "1",
             *args,
             stdout=stdout,
             stderr=stderr,

src/documents/tests/test_management_retagger.py

@@ -425,29 +425,26 @@ class TestRetaggerStoragePath(DirectoriesMixin):
 @pytest.mark.management
 @pytest.mark.django_db
 class TestRetaggerIdRange(DirectoriesMixin):
+    @pytest.mark.usefixtures("documents")
     @pytest.mark.parametrize(
-        ("range_end", "expected_count"),
+        ("id_range_args", "expected_count"),
         [
-            pytest.param("second", 1, id="narrow_range_limits_scope"),
-            pytest.param("extra", 2, id="wide_range_tags_all_matches"),
+            pytest.param(["1", "2"], 1, id="narrow_range_limits_scope"),
+            pytest.param(["1", "9999"], 2, id="wide_range_tags_all_matches"),
         ],
     )
     def test_id_range_limits_scope(
         self,
         tags: TagTuple,
-        documents: DocumentTuple,
-        range_end: str,
+        id_range_args: list[str],
         expected_count: int,
     ) -> None:
-        first, second, *_ = documents
-        extra = DocumentFactory(content="NOT the first document")
-        end = {"second": second, "extra": extra}[range_end]
+        DocumentFactory(content="NOT the first document")
         call_command(
             "document_retagger",
             "--tags",
             "--id-range",
-            str(first.pk),
-            str(end.pk),
+            *id_range_args,
             skip_checks=True,
         )
         tag_first, *_ = tags

src/documents/tests/test_workflows.py

@@ -174,8 +174,8 @@ class TestWorkflows(
         w.save()
 
         self.assertEqual(w.__str__(), "Workflow: Workflow 1")
-        self.assertEqual(trigger.__str__(), f"WorkflowTrigger {trigger.pk}")
-        self.assertEqual(action.__str__(), f"WorkflowAction {action.pk}")
+        self.assertEqual(trigger.__str__(), "WorkflowTrigger 1")
+        self.assertEqual(action.__str__(), "WorkflowAction 1")
 
         test_file = shutil.copy(
             self.SIMPLE_PDF,
@@ -433,7 +433,7 @@ class TestWorkflows(
                 list(document.tags.all()),
                 [self.t1, self.t2, self.t3],
             )
-            self.assertCountEqual(
+            self.assertEqual(
                 list(
                     get_users_with_perms(
                         document,

src/paperless_ai/tests/test_chat.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import json
-from contextlib import nullcontext
 from typing import TYPE_CHECKING
 from typing import Any
 from unittest.mock import MagicMock
@@ -38,13 +37,6 @@ def patch_embed_model():
     llama_settings.Settings.embed_model = None
 
 
-@pytest.fixture(autouse=True)
-def keep_db_connection():
-    # Closing the connection would roll back the test's transaction on PostgreSQL
-    with patch("paperless_ai.chat.db_connection_released", nullcontext):
-        yield
-
-
 @pytest.fixture(autouse=True)
 def patch_embed_nodes():
     with patch(