refactor(tests): format

tests/backend/test_fuzzing.py

@@ -1,21 +1,27 @@
-import pytest
 import os
-import time
 import random
-from unittest.mock import MagicMock, patch
+import time
-from hypothesis import given, strategies as st, settings, HealthCheck
-from meshchatx.meshchat import ReticulumMeshChat
-import RNS
-import LXMF
 from contextlib import ExitStack
-from meshchatx.src.backend.telemetry_utils import Telemeter
+from unittest.mock import MagicMock, patch
+
+import LXMF
+import pytest
+import RNS
+from hypothesis import HealthCheck, given, settings
+from hypothesis import strategies as st
+
+from meshchatx.meshchat import ReticulumMeshChat
 from meshchatx.src.backend.interface_config_parser import InterfaceConfigParser
-from meshchatx.src.backend.lxmf_message_fields import LxmfAudioField, LxmfImageField, LxmfFileAttachment
+from meshchatx.src.backend.lxmf_message_fields import (
+    LxmfAudioField,
+    LxmfFileAttachment,
+    LxmfImageField,
+)
+from meshchatx.src.backend.telemetry_utils import Telemeter
+
 
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(data=st.binary(min_size=0, max_size=1000))
-    data=st.binary(min_size=0, max_size=1000)
-)
 def test_telemetry_unpack_fuzzing(data):
     """Fuzz the telemetry unpacking logic with random binary data."""
     try:
@@ -25,10 +31,9 @@ def test_telemetry_unpack_fuzzing(data):
         # We expect some failures for invalid packed data, but no crashes
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(config_text=st.text(min_size=0, max_size=5000))
-    config_text=st.text(min_size=0, max_size=5000)
-)
 def test_interface_config_parsing_fuzzing(config_text):
     """Fuzz the interface configuration parser with random text."""
     try:
@@ -36,10 +41,9 @@ def test_interface_config_parsing_fuzzing(config_text):
     except Exception as e:
         pytest.fail(f"InterfaceConfigParser crashed with input: {e}")
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(identity_bytes=st.binary(min_size=0, max_size=2048))
-    identity_bytes=st.binary(min_size=0, max_size=2048)
-)
 def test_identity_parsing_fuzzing(identity_bytes):
     """Fuzz RNS.Identity loading with random bytes."""
     try:
@@ -49,32 +53,37 @@ def test_identity_parsing_fuzzing(identity_bytes):
         # but it should not cause an unhandled crash of the process.
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(path_data=st.one_of(st.none(), st.text(min_size=0, max_size=1000)))
-    path_data=st.one_of(st.none(), st.text(min_size=0, max_size=1000))
-)
 def test_nomadnet_string_conversion_fuzzing(path_data):
     """Fuzz the nomadnet string to map conversion."""
     try:
         ReticulumMeshChat.convert_nomadnet_string_data_to_map(path_data)
     except Exception as e:
-        pytest.fail(f"convert_nomadnet_string_data_to_map crashed with data {path_data}: {e}")
+        pytest.fail(
+            f"convert_nomadnet_string_data_to_map crashed with data {path_data}: {e}",
+        )
+
 
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
-    field_data=st.one_of(st.none(), st.dictionaries(keys=st.text(), values=st.text()), st.text())
+    field_data=st.one_of(
+        st.none(), st.dictionaries(keys=st.text(), values=st.text()), st.text(),
+    ),
 )
 def test_nomadnet_field_conversion_fuzzing(field_data):
     """Fuzz the nomadnet field data to map conversion."""
     try:
         ReticulumMeshChat.convert_nomadnet_field_data_to_map(field_data)
     except Exception as e:
-        pytest.fail(f"convert_nomadnet_field_data_to_map crashed with data {field_data}: {e}")
+        pytest.fail(
+            f"convert_nomadnet_field_data_to_map crashed with data {field_data}: {e}",
+        )
+
 
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(app_data_base64=st.one_of(st.none(), st.text(min_size=0, max_size=1000)))
-    app_data_base64=st.one_of(st.none(), st.text(min_size=0, max_size=1000))
-)
 def test_display_name_parsing_fuzzing(app_data_base64):
     """Fuzz the display name parsing methods."""
     try:
@@ -83,10 +92,12 @@ def test_display_name_parsing_fuzzing(app_data_base64):
     except Exception as e:
         pytest.fail(f"Display name parsing crashed with data {app_data_base64}: {e}")
 
+
 @pytest.fixture
 def temp_dir(tmp_path):
     return str(tmp_path)
 
+
 @pytest.fixture
 def mock_app(temp_dir):
     with ExitStack() as stack:
@@ -110,9 +121,17 @@ def mock_app(temp_dir):
         stack.enter_context(patch("RNS.Reticulum"))
         stack.enter_context(patch("RNS.Transport"))
         stack.enter_context(patch("threading.Thread"))
-        stack.enter_context(patch.object(ReticulumMeshChat, "announce_loop", return_value=None))
+        stack.enter_context(
-        stack.enter_context(patch.object(ReticulumMeshChat, "announce_sync_propagation_nodes", return_value=None))
+            patch.object(ReticulumMeshChat, "announce_loop", return_value=None),
-        stack.enter_context(patch.object(ReticulumMeshChat, "crawler_loop", return_value=None))
+        )
+        stack.enter_context(
+            patch.object(
+                ReticulumMeshChat, "announce_sync_propagation_nodes", return_value=None,
+            ),
+        )
+        stack.enter_context(
+            patch.object(ReticulumMeshChat, "crawler_loop", return_value=None),
+        )
 
         mock_id = MagicMock()
         mock_id.hash = b"test_hash_32_bytes_long_01234567"
@@ -141,7 +160,9 @@ def mock_app(temp_dir):
         app.config.auto_send_failed_messages_to_propagation_node.get.return_value = True
         app.config.show_suggested_community_interfaces.get.return_value = True
         app.config.lxmf_local_propagation_node_enabled.get.return_value = False
-        app.config.lxmf_preferred_propagation_node_destination_hash.get.return_value = None
+        app.config.lxmf_preferred_propagation_node_destination_hash.get.return_value = (
+            None
+        )
         app.config.lxmf_preferred_propagation_node_auto_sync_interval_seconds.get.return_value = 3600
         app.config.lxmf_preferred_propagation_node_last_synced_at.get.return_value = 0
         app.config.lxmf_user_icon_name.get.return_value = "user"
@@ -153,10 +174,16 @@ def mock_app(temp_dir):
         app.config.lxmf_auto_sync_propagation_nodes_min_hops.get.return_value = 1
         app.config.lxmf_auto_sync_propagation_nodes_max_hops.get.return_value = 5
         app.config.lxmf_auto_sync_propagation_nodes_max_count.get.return_value = 10
-        app.config.lxmf_auto_sync_propagation_nodes_max_age_seconds.get.return_value = 86400
+        app.config.lxmf_auto_sync_propagation_nodes_max_age_seconds.get.return_value = (
-        app.config.lxmf_auto_sync_propagation_nodes_max_size_bytes.get.return_value = 1000000
+            86400
+        )
+        app.config.lxmf_auto_sync_propagation_nodes_max_size_bytes.get.return_value = (
+            1000000
+        )
         app.config.lxmf_auto_sync_propagation_nodes_max_total_size_bytes.get.return_value = 10000000
-        app.config.lxmf_auto_sync_propagation_nodes_max_total_count.get.return_value = 100
+        app.config.lxmf_auto_sync_propagation_nodes_max_total_count.get.return_value = (
+            100
+        )
         app.config.lxmf_auto_sync_propagation_nodes_max_total_age_seconds.get.return_value = 864000
         app.config.lxmf_auto_sync_propagation_nodes_max_total_size_bytes_per_node.get.return_value = 1000000
         app.config.lxmf_auto_sync_propagation_nodes_max_total_count_per_node.get.return_value = 100
@@ -169,10 +196,13 @@ def mock_app(temp_dir):
         app.handle_forwarding = MagicMock()
         app.convert_db_announce_to_dict = MagicMock(return_value={})
         app.get_config_dict = MagicMock(return_value={"test_config": "test_value"})
-        app.resend_failed_messages_for_destination = MagicMock(side_effect=lambda dest: None)
+        app.resend_failed_messages_for_destination = MagicMock(
+            side_effect=lambda dest: None,
+        )
 
         yield app
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     num_announces=st.integers(min_value=10, max_value=100),
@@ -189,7 +219,7 @@ def test_announce_overload(mock_app, num_announces):
     mock_app.database.announces.get_announce_by_hash.return_value = {
         "aspect": "lxmf.delivery",
         "destination_hash": "some_hash",
-        "display_name": "Test Peer"
+        "display_name": "Test Peer",
     }
 
     for i in range(num_announces):
@@ -199,16 +229,13 @@ def test_announce_overload(mock_app, num_announces):
         announce_packet_hash = os.urandom(16)
 
         mock_app.on_lxmf_announce_received(
-            aspect,
+            aspect, destination_hash, announced_identity, app_data, announce_packet_hash,
-            destination_hash,
-            announced_identity,
-            app_data,
-            announce_packet_hash
         )
 
     # Verify that the database was called for each announce
     assert mock_app.announce_manager.upsert_announce.call_count == num_announces
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     num_messages=st.integers(min_value=10, max_value=100),
@@ -229,6 +256,7 @@ def test_message_spamming(mock_app, num_messages):
 
     assert mock_app.db_upsert_lxmf_message.call_count == num_messages
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     num_messages=st.integers(min_value=10, max_value=50),
@@ -250,18 +278,34 @@ def test_message_spamming_large_payloads(mock_app, num_messages, payload_size):
 
     assert mock_app.db_upsert_lxmf_message.call_count == num_messages
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     msg=st.dictionaries(
         keys=st.text(),
-        values=st.one_of(st.text(), st.integers(), st.booleans(), st.dictionaries(keys=st.text(), values=st.text())),
+        values=st.one_of(
-        min_size=1, max_size=10
+            st.text(),
-    ).flatmap(lambda d: st.sampled_from([
+            st.integers(),
-            "ping", "config.set", "nomadnet.download.cancel", 
+            st.booleans(),
-            "nomadnet.page.archives.get", "lxmf.forwarding.rule.add",
+            st.dictionaries(keys=st.text(), values=st.text()),
-            "lxmf.forwarding.rule.delete", "lxm.ingest_uri",
+        ),
-            "lxm.generate_paper_uri", "keyboard_shortcuts.get"
+        min_size=1,
-        ]).map(lambda t: {**d, "type": t}))
+        max_size=10,
+    ).flatmap(
+        lambda d: st.sampled_from(
+            [
+                "ping",
+                "config.set",
+                "nomadnet.download.cancel",
+                "nomadnet.page.archives.get",
+                "lxmf.forwarding.rule.add",
+                "lxmf.forwarding.rule.delete",
+                "lxm.ingest_uri",
+                "lxm.generate_paper_uri",
+                "keyboard_shortcuts.get",
+            ],
+        ).map(lambda t: {**d, "type": t}),
+    ),
 )
 @pytest.mark.asyncio
 async def test_websocket_api_hypothesis(mock_app, msg):
@@ -274,6 +318,7 @@ async def test_websocket_api_hypothesis(mock_app, msg):
     except Exception:
         pass
 
+
 @pytest.mark.asyncio
 async def test_websocket_api_fuzzing(mock_app):
     """Fuzz the websocket API with various message types and payloads."""
@@ -287,11 +332,19 @@ async def test_websocket_api_fuzzing(mock_app):
         {"type": "config.set", "config": {"invalid_key": "invalid_value"}},
         {"type": "config.set", "config": "not_a_dict"},
         {"type": "nomadnet.download.cancel", "download_id": "non_existent_id"},
-        {"type": "nomadnet.page.archives.get", "destination_hash": "invalid_hash", "page_path": "/invalid"},
+        {
+            "type": "nomadnet.page.archives.get",
+            "destination_hash": "invalid_hash",
+            "page_path": "/invalid",
+        },
         {"type": "lxmf.forwarding.rule.add", "rule": {}},
         {"type": "lxmf.forwarding.rule.delete", "id": -1},
         {"type": "lxm.ingest_uri", "uri": "invalid_uri"},
-        {"type": "lxm.generate_paper_uri", "destination_hash": "00" * 16, "content": "test"},
+        {
+            "type": "lxm.generate_paper_uri",
+            "destination_hash": "00" * 16,
+            "content": "test",
+        },
         {"type": "non_existent_type", "data": "random_data"},
     ]
 
@@ -301,6 +354,7 @@ async def test_websocket_api_fuzzing(mock_app):
         except Exception:
             pass
 
+
 @pytest.mark.asyncio
 async def test_config_fuzzing(mock_app):
     """Fuzz the config update logic with various values."""
@@ -319,31 +373,23 @@ async def test_config_fuzzing(mock_app):
         except Exception:
             pass
 
+
 def test_malformed_announce_data(mock_app):
     """Test handling of malformed or unexpected data in announces."""
     aspect = "lxmf.delivery"
     destination_hash = b"too_short"  # Malformed hash
 
     # Test with None identity
-    mock_app.on_lxmf_announce_received(
+    mock_app.on_lxmf_announce_received(aspect, destination_hash, None, None, b"")
-        aspect,
-        destination_hash,
-        None,
-        None,
-        b""
-    )
 
     # Test with identity having None hash
     announced_identity = MagicMock()
     announced_identity.hash = None
     mock_app.on_lxmf_announce_received(
-        aspect,
+        aspect, destination_hash, announced_identity, None, b"",
-        destination_hash,
-        announced_identity,
-        None,
-        b""
     )
 
+
 def test_malformed_message_data(mock_app):
     """Test handling of malformed LXMF messages."""
     mock_message = MagicMock()
@@ -353,10 +399,11 @@ def test_malformed_message_data(mock_app):
     # This should be caught by the try-except in on_lxmf_delivery
     mock_app.on_lxmf_delivery(mock_message)
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     weird_string=st.text(min_size=0, max_size=1000),
-    large_binary=st.binary(min_size=0, max_size=10000)
+    large_binary=st.binary(min_size=0, max_size=10000),
 )
 def test_database_dao_fuzzing(mock_app, weird_string, large_binary):
     """Fuzz the database DAOs with weird strings and large binary data."""
@@ -369,7 +416,7 @@ def test_database_dao_fuzzing(mock_app, weird_string, large_binary):
         "app_data": large_binary,
         "rssi": random.randint(-120, 0),
         "snr": random.uniform(-20, 20),
-        "quality": random.uniform(0, 100)
+        "quality": random.uniform(0, 100),
     }
     try:
         mock_app.database.announces.upsert_announce(announce_data)
@@ -387,31 +434,34 @@ def test_database_dao_fuzzing(mock_app, weird_string, large_binary):
         "fields": {"weird": weird_string},
         "timestamp": time.time(),
         "is_incoming": random.choice([0, 1]),
-        "is_spam": random.choice([0, 1])
+        "is_spam": random.choice([0, 1]),
     }
     try:
         mock_app.database.messages.upsert_lxmf_message(message_data)
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     audio_bytes=st.binary(min_size=0, max_size=5000),
-    image_bytes=st.binary(min_size=0, max_size=10000)
+    image_bytes=st.binary(min_size=0, max_size=10000),
 )
 def test_lxmf_field_fuzzing(audio_bytes, image_bytes):
     """Fuzz the LXMF field helper classes."""
     try:
         LxmfAudioField(audio_mode=random.randint(0, 10), audio_bytes=audio_bytes)
-        LxmfImageField(image_type=random.choice(["png", "jpg", "webp", "invalid"]), image_bytes=image_bytes)
+        LxmfImageField(
+            image_type=random.choice(["png", "jpg", "webp", "invalid"]),
+            image_bytes=image_bytes,
+        )
         LxmfFileAttachment(file_name="test.txt", file_bytes=audio_bytes)
     except Exception as e:
         pytest.fail(f"LXMF field classes crashed: {e}")
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(command_bytes=st.binary(min_size=1, max_size=100))
-    command_bytes=st.binary(min_size=1, max_size=100)
-)
 def test_sideband_command_fuzzing(mock_app, command_bytes):
     """Fuzz the sideband command parsing in LXMF delivery."""
     mock_message = MagicMock()
@@ -425,11 +475,12 @@ def test_sideband_command_fuzzing(mock_app, command_bytes):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     destination_hash=st.text(min_size=0, max_size=100),
     page_path=st.text(min_size=0, max_size=500),
-    content=st.text(min_size=0, max_size=10000)
+    content=st.text(min_size=0, max_size=10000),
 )
 def test_archiver_manager_fuzzing(mock_app, destination_hash, page_path, content):
     """Fuzz the archiver manager's page archiving logic."""
@@ -438,10 +489,9 @@ def test_archiver_manager_fuzzing(mock_app, destination_hash, page_path, content
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(state=st.integers(min_value=-10, max_value=30))
-    state=st.integers(min_value=-10, max_value=30)
-)
 def test_lxmf_state_conversion_fuzzing(mock_app, state):
     """Fuzz LXMF state string conversion."""
     mock_message = MagicMock()
@@ -451,10 +501,9 @@ def test_lxmf_state_conversion_fuzzing(mock_app, state):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(method=st.integers(min_value=-10, max_value=30))
-    method=st.integers(min_value=-10, max_value=30)
-)
 def test_lxmf_method_conversion_fuzzing(mock_app, method):
     """Fuzz LXMF method string conversion."""
     mock_message = MagicMock()
@@ -464,6 +513,7 @@ def test_lxmf_method_conversion_fuzzing(mock_app, method):
     except Exception:
         pass
 
+
 def test_telephone_announce_fuzzing(mock_app):
     """Fuzz telephone announce reception."""
     aspect = "telephone.call"
@@ -475,11 +525,7 @@ def test_telephone_announce_fuzzing(mock_app):
 
     try:
         mock_app.on_telephone_announce_received(
-            aspect,
+            aspect, destination_hash, announced_identity, app_data, announce_packet_hash,
-            destination_hash,
-            announced_identity,
-            app_data,
-            announce_packet_hash
         )
     except Exception:
         pass

tests/backend/test_meshchat_utils.py

@@ -38,7 +38,9 @@ def mock_app(temp_dir):
         patch("RNS.Transport"),
         patch("threading.Thread"),
         patch.object(
-            ReticulumMeshChat, "announce_loop", new=MagicMock(return_value=None),
+            ReticulumMeshChat,
+            "announce_loop",
+            new=MagicMock(return_value=None),
         ),
         patch.object(
             ReticulumMeshChat,
@@ -46,7 +48,9 @@ def mock_app(temp_dir):
             new=MagicMock(return_value=None),
         ),
         patch.object(
-            ReticulumMeshChat, "crawler_loop", new=MagicMock(return_value=None),
+            ReticulumMeshChat,
+            "crawler_loop",
+            new=MagicMock(return_value=None),
         ),
     ):
         mock_id = MagicMock()

tests/backend/test_rns_lifecycle.py

@@ -16,7 +16,9 @@ def mock_rns():
         patch("RNS.Identity") as mock_identity,
         patch("threading.Thread"),
         patch.object(
-            ReticulumMeshChat, "announce_loop", new=MagicMock(return_value=None),
+            ReticulumMeshChat,
+            "announce_loop",
+            new=MagicMock(return_value=None),
         ),
         patch.object(
             ReticulumMeshChat,
@@ -24,7 +26,9 @@ def mock_rns():
             new=MagicMock(return_value=None),
         ),
         patch.object(
-            ReticulumMeshChat, "crawler_loop", new=MagicMock(return_value=None),
+            ReticulumMeshChat,
+            "crawler_loop",
+            new=MagicMock(return_value=None),
         ),
     ):
         # Setup mock identity
@@ -215,7 +219,9 @@ async def test_reload_reticulum_failure_recovery(mock_rns, temp_dir):
         # We need to make something else fail to reach the except block
         # or just mock a method inside the try block to raise.
         with patch.object(
-            app, "teardown_identity", side_effect=Exception("Reload failed"),
+            app,
+            "teardown_identity",
+            side_effect=Exception("Reload failed"),
         ):
             result = await app.reload_reticulum()
 

tests/backend/test_security_fuzzing.py

@@ -1,10 +1,14 @@
-import pytest
 import os
-from unittest.mock import MagicMock, patch
-from hypothesis import given, strategies as st, settings, HealthCheck
-import LXMF
-from meshchatx.meshchat import ReticulumMeshChat
 from contextlib import ExitStack
+from unittest.mock import MagicMock, patch
+
+import LXMF
+import pytest
+from hypothesis import HealthCheck, given, settings
+from hypothesis import strategies as st
+
+from meshchatx.meshchat import ReticulumMeshChat
+
 
 @pytest.fixture
 def mock_app():
@@ -28,9 +32,17 @@ def mock_app():
         stack.enter_context(patch("RNS.Reticulum"))
         stack.enter_context(patch("RNS.Transport"))
         stack.enter_context(patch("threading.Thread"))
-        stack.enter_context(patch.object(ReticulumMeshChat, "announce_loop", return_value=None))
+        stack.enter_context(
-        stack.enter_context(patch.object(ReticulumMeshChat, "announce_sync_propagation_nodes", return_value=None))
+            patch.object(ReticulumMeshChat, "announce_loop", return_value=None),
-        stack.enter_context(patch.object(ReticulumMeshChat, "crawler_loop", return_value=None))
+        )
+        stack.enter_context(
+            patch.object(
+                ReticulumMeshChat, "announce_sync_propagation_nodes", return_value=None,
+            ),
+        )
+        stack.enter_context(
+            patch.object(ReticulumMeshChat, "crawler_loop", return_value=None),
+        )
 
         mock_id = MagicMock()
         mock_id.hash = b"test_hash_32_bytes_long_01234567"
@@ -69,14 +81,36 @@ def mock_app():
 
         yield app
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     field_data=st.one_of(
-        st.lists(st.one_of(st.text(), st.binary(), st.integers(), st.floats(), st.booleans(), st.none()), min_size=0, max_size=10),
+        st.lists(
-        st.dictionaries(keys=st.text(), values=st.one_of(st.text(), st.binary(), st.integers(), st.floats(), st.booleans(), st.none())),
+            st.one_of(
+                st.text(),
                 st.binary(),
-        st.text()
+                st.integers(),
-    )
+                st.floats(),
+                st.booleans(),
+                st.none(),
+            ),
+            min_size=0,
+            max_size=10,
+        ),
+        st.dictionaries(
+            keys=st.text(),
+            values=st.one_of(
+                st.text(),
+                st.binary(),
+                st.integers(),
+                st.floats(),
+                st.booleans(),
+                st.none(),
+            ),
+        ),
+        st.binary(),
+        st.text(),
+    ),
 )
 def test_lxmf_icon_appearance_fuzzing(mock_app, field_data):
     """Fuzz LXMF.FIELD_ICON_APPEARANCE parsing in on_lxmf_delivery."""
@@ -90,22 +124,37 @@ def test_lxmf_icon_appearance_fuzzing(mock_app, field_data):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     attachments_data=st.lists(
         st.one_of(
-            st.lists(st.one_of(st.text(), st.binary(), st.integers(), st.floats(), st.booleans(), st.none()), min_size=0, max_size=5),
+            st.lists(
+                st.one_of(
                     st.text(),
                     st.binary(),
-            st.none()
+                    st.integers(),
+                    st.floats(),
+                    st.booleans(),
+                    st.none(),
+                ),
+                min_size=0,
+                max_size=5,
+            ),
+            st.text(),
+            st.binary(),
+            st.none(),
+        ),
+        min_size=0,
+        max_size=10,
     ),
-        min_size=0, max_size=10
-    )
 )
 def test_lxmf_attachments_fuzzing(mock_app, attachments_data):
     """Fuzz LXMF.FIELD_FILE_ATTACHMENTS parsing."""
     mock_message = MagicMock()
-    mock_message.get_fields.return_value = {LXMF.FIELD_FILE_ATTACHMENTS: attachments_data}
+    mock_message.get_fields.return_value = {
+        LXMF.FIELD_FILE_ATTACHMENTS: attachments_data,
+    }
     mock_message.source_hash = os.urandom(16)
     mock_message.hash = os.urandom(16)
 
@@ -114,13 +163,25 @@ def test_lxmf_attachments_fuzzing(mock_app, attachments_data):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     image_data=st.one_of(
-        st.lists(st.one_of(st.text(), st.binary(), st.integers(), st.floats(), st.booleans(), st.none()), min_size=0, max_size=5),
+        st.lists(
+            st.one_of(
+                st.text(),
                 st.binary(),
-        st.none()
+                st.integers(),
-    )
+                st.floats(),
+                st.booleans(),
+                st.none(),
+            ),
+            min_size=0,
+            max_size=5,
+        ),
+        st.binary(),
+        st.none(),
+    ),
 )
 def test_lxmf_image_field_fuzzing(mock_app, image_data):
     """Fuzz LXMF.FIELD_IMAGE parsing."""
@@ -134,13 +195,25 @@ def test_lxmf_image_field_fuzzing(mock_app, image_data):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     audio_data=st.one_of(
-        st.lists(st.one_of(st.text(), st.binary(), st.integers(), st.floats(), st.booleans(), st.none()), min_size=0, max_size=5),
+        st.lists(
+            st.one_of(
+                st.text(),
                 st.binary(),
-        st.none()
+                st.integers(),
-    )
+                st.floats(),
+                st.booleans(),
+                st.none(),
+            ),
+            min_size=0,
+            max_size=5,
+        ),
+        st.binary(),
+        st.none(),
+    ),
 )
 def test_lxmf_audio_field_fuzzing(mock_app, audio_data):
     """Fuzz LXMF.FIELD_AUDIO parsing."""
@@ -154,16 +227,17 @@ def test_lxmf_audio_field_fuzzing(mock_app, audio_data):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     filename=st.text(min_size=0, max_size=1000),
-    file_bytes=st.binary(min_size=0, max_size=10000)
+    file_bytes=st.binary(min_size=0, max_size=10000),
 )
 def test_attachment_filename_security(mock_app, filename, file_bytes):
     """Test for potential directory traversal or malicious filenames in attachments."""
     mock_message = MagicMock()
     mock_message.get_fields.return_value = {
-        LXMF.FIELD_FILE_ATTACHMENTS: [[filename, file_bytes]]
+        LXMF.FIELD_FILE_ATTACHMENTS: [[filename, file_bytes]],
     }
     mock_message.source_hash = os.urandom(16)
     mock_message.hash = os.urandom(16)
@@ -174,10 +248,9 @@ def test_attachment_filename_security(mock_app, filename, file_bytes):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(caller_id_bytes=st.binary(min_size=0, max_size=1000))
-    caller_id_bytes=st.binary(min_size=0, max_size=1000)
-)
 def test_telephone_callback_fuzzing(mock_app, caller_id_bytes):
     """Fuzz telephone manager callbacks with malformed identity bytes."""
     try:
@@ -190,6 +263,7 @@ def test_telephone_callback_fuzzing(mock_app, caller_id_bytes):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     data=st.dictionaries(
@@ -200,9 +274,9 @@ def test_telephone_callback_fuzzing(mock_app, caller_id_bytes):
             st.integers(),
             st.floats(),
             st.lists(st.text()),
-            st.dictionaries(keys=st.text(), values=st.text())
+            st.dictionaries(keys=st.text(), values=st.text()),
-        )
+        ),
-    )
+    ),
 )
 def test_message_dao_upsert_fuzzing(mock_app, data):
     """Fuzz MessageDAO.upsert_lxmf_message with varied dictionary data."""
@@ -211,10 +285,11 @@ def test_message_dao_upsert_fuzzing(mock_app, data):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     title_bytes=st.binary(min_size=0, max_size=1000),
-    content_bytes=st.binary(min_size=0, max_size=5000)
+    content_bytes=st.binary(min_size=0, max_size=5000),
 )
 def test_lxmf_message_decoding_fuzzing(mock_app, title_bytes, content_bytes):
     """Fuzz LXMF message title and content decoding."""
@@ -239,10 +314,9 @@ def test_lxmf_message_decoding_fuzzing(mock_app, title_bytes, content_bytes):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(greeting_text=st.text(min_size=0, max_size=1000))
-    greeting_text=st.text(min_size=0, max_size=1000)
-)
 def test_voicemail_greeting_fuzzing(mock_app, greeting_text):
     """Fuzz voicemail greeting generation with varied text."""
     mock_app.voicemail_manager.has_espeak = True
@@ -256,10 +330,9 @@ def test_voicemail_greeting_fuzzing(mock_app, greeting_text):
         except Exception:
             pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(caller_hash=st.binary(min_size=0, max_size=32))
-    caller_hash=st.binary(min_size=0, max_size=32)
-)
 def test_voicemail_incoming_call_fuzzing(mock_app, caller_hash):
     """Fuzz voicemail incoming call handling."""
     mock_identity = MagicMock()
@@ -270,23 +343,27 @@ def test_voicemail_incoming_call_fuzzing(mock_app, caller_hash):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     source_hash=st.text(min_size=0, max_size=64),
     recipient_hash=st.text(min_size=0, max_size=64),
-    dest_hash=st.text(min_size=0, max_size=64)
+    dest_hash=st.text(min_size=0, max_size=64),
 )
-def test_forwarding_manager_mapping_fuzzing(mock_app, source_hash, recipient_hash, dest_hash):
+def test_forwarding_manager_mapping_fuzzing(
+    mock_app, source_hash, recipient_hash, dest_hash,
+):
     """Fuzz forwarding manager mapping creation."""
     try:
-        mock_app.forwarding_manager.get_or_create_mapping(source_hash, recipient_hash, dest_hash)
+        mock_app.forwarding_manager.get_or_create_mapping(
+            source_hash, recipient_hash, dest_hash,
+        )
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(uri=st.text(min_size=0, max_size=5000))
-    uri=st.text(min_size=0, max_size=5000)
-)
 def test_lxm_ingest_uri_fuzzing(mock_app, uri):
     """Fuzz the lxm.ingest_uri WebSocket handler."""
     mock_client = MagicMock()
@@ -295,33 +372,46 @@ def test_lxm_ingest_uri_fuzzing(mock_app, uri):
     try:
         # We need to wrap it in a task since it's async
         import asyncio
+
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
-        loop.run_until_complete(mock_app.on_websocket_data_received(mock_client, {"type": "lxm.ingest_uri", "uri": uri}))
+        loop.run_until_complete(
+            mock_app.on_websocket_data_received(
+                mock_client, {"type": "lxm.ingest_uri", "uri": uri},
+            ),
+        )
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     config_data=st.dictionaries(
         keys=st.text(),
-        values=st.one_of(st.text(), st.integers(), st.booleans(), st.none(), st.lists(st.text()), st.dictionaries(keys=st.text(), values=st.text()))
+        values=st.one_of(
-    )
+            st.text(),
+            st.integers(),
+            st.booleans(),
+            st.none(),
+            st.lists(st.text()),
+            st.dictionaries(keys=st.text(), values=st.text()),
+        ),
+    ),
 )
 def test_update_config_fuzzing(mock_app, config_data):
     """Fuzz the update_config method with randomized dictionary data."""
     try:
         import asyncio
+
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
         loop.run_until_complete(mock_app.update_config(config_data))
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(large_string=st.text(min_size=1000, max_size=10000))
-    large_string=st.text(min_size=1000, max_size=10000)
-)
 def test_large_payload_dos_resistance(mock_app, large_string):
     """Check resistance to DoS via large strings in various fields."""
     mock_message = MagicMock()
@@ -336,50 +426,61 @@ def test_large_payload_dos_resistance(mock_app, large_string):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     nested_data=st.recursive(
         st.one_of(st.text(), st.integers()),
         lambda children: st.dictionaries(st.text(), children) | st.lists(children),
-        max_leaves=100
+        max_leaves=100,
-    )
+    ),
 )
 def test_websocket_recursion_fuzzing(mock_app, nested_data):
     """Fuzz the WebSocket handler with deeply nested JSON data."""
     mock_client = MagicMock()
     try:
         import asyncio
+
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
-        loop.run_until_complete(mock_app.on_websocket_data_received(mock_client, {"type": "ping", "data": nested_data}))
+        loop.run_until_complete(
+            mock_app.on_websocket_data_received(
+                mock_client, {"type": "ping", "data": nested_data},
+            ),
+        )
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(dest_hash=st.text(), content=st.text())
-    dest_hash=st.text(),
-    content=st.text()
-)
 def test_lxm_generate_paper_uri_fuzzing(mock_app, dest_hash, content):
     """Fuzz paper URI generation with randomized inputs."""
     mock_client = MagicMock()
     try:
         import asyncio
+
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
-        loop.run_until_complete(mock_app.on_websocket_data_received(mock_client, {
+        loop.run_until_complete(
+            mock_app.on_websocket_data_received(
+                mock_client,
+                {
                     "type": "lxm.generate_paper_uri",
                     "destination_hash": dest_hash,
-            "content": content
+                    "content": content,
-        }))
+                },
+            ),
+        )
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     lon=st.floats(allow_nan=False, allow_infinity=False),
     lat=st.floats(allow_nan=False, allow_infinity=False),
-    zoom=st.integers(min_value=-100, max_value=100)
+    zoom=st.integers(min_value=-100, max_value=100),
 )
 def test_map_manager_coord_fuzzing(mock_app, lon, lat, zoom):
     """Fuzz coordinate to tile conversion in MapManager."""
@@ -388,11 +489,12 @@ def test_map_manager_coord_fuzzing(mock_app, lon, lat, zoom):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
 @given(
     text=st.text(),
     source_lang=st.text(min_size=0, max_size=10),
-    target_lang=st.text(min_size=0, max_size=10)
+    target_lang=st.text(min_size=0, max_size=10),
 )
 def test_translator_handler_fuzzing(mock_app, text, source_lang, target_lang):
     """Fuzz the TranslatorHandler translate_text method."""
@@ -404,28 +506,26 @@ def test_translator_handler_fuzzing(mock_app, text, source_lang, target_lang):
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(dest_hash=st.text(), icon_name=st.text(), fg_color=st.text(), bg_color=st.text())
-    dest_hash=st.text(),
+def test_update_lxmf_user_icon_fuzzing(
-    icon_name=st.text(),
+    mock_app, dest_hash, icon_name, fg_color, bg_color,
-    fg_color=st.text(),
+):
-    bg_color=st.text()
-)
-def test_update_lxmf_user_icon_fuzzing(mock_app, dest_hash, icon_name, fg_color, bg_color):
     """Fuzz user icon update logic with malformed strings."""
     try:
         mock_app.update_lxmf_user_icon(dest_hash, icon_name, fg_color, bg_color)
     except Exception:
         pass
 
+
 @settings(suppress_health_check=[HealthCheck.function_scoped_fixture], deadline=None)
-@given(
+@given(binary_data=st.binary(min_size=0, max_size=10000))
-    binary_data=st.binary(min_size=0, max_size=10000)
-)
 def test_rns_identity_load_fuzzing(mock_app, binary_data):
     """Fuzz RNS.Identity loading with random binary data."""
     try:
         import RNS
+
         try:
             RNS.Identity.from_bytes(binary_data)
         except Exception: