diff --git a/tests/helpers/test_config_entry_flow.py b/tests/helpers/test_config_entry_flow.py
index 8909f18e544..90d8030be79 100644
--- a/tests/helpers/test_config_entry_flow.py
+++ b/tests/helpers/test_config_entry_flow.py
@@ -1,4 +1,5 @@
 """Tests for the Config Entry Flow helper."""
+from collections.abc import Generator
 from unittest.mock import Mock, PropertyMock, patch
 
 import pytest
@@ -17,11 +18,11 @@ from tests.common import (
 
 
 @pytest.fixture
-def discovery_flow_conf(hass):
+def discovery_flow_conf(hass: HomeAssistant) -> Generator[dict[str, bool], None, None]:
     """Register a handler."""
     handler_conf = {"discovered": False}
 
-    async def has_discovered_devices(hass):
+    async def has_discovered_devices(hass: HomeAssistant) -> bool:
         """Mock if we have discovered devices."""
         return handler_conf["discovered"]
 
@@ -33,17 +34,19 @@ def discovery_flow_conf(hass):
 
 
 @pytest.fixture
-def webhook_flow_conf(hass):
+def webhook_flow_conf(hass: HomeAssistant) -> Generator[None, None, None]:
     """Register a handler."""
     with patch.dict(config_entries.HANDLERS):
         config_entry_flow.register_webhook_flow("test_single", "Test Single", {}, False)
         config_entry_flow.register_webhook_flow(
             "test_multiple", "Test Multiple", {}, True
         )
-        yield {}
+        yield
 
 
-async def test_single_entry_allowed(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_single_entry_allowed(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test only a single entry is allowed."""
     flow = config_entries.HANDLERS["test"]()
     flow.hass = hass
@@ -56,7 +59,9 @@ async def test_single_entry_allowed(hass: HomeAssistant, discovery_flow_conf) ->
     assert result["reason"] == "single_instance_allowed"
 
 
-async def test_user_no_devices_found(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_user_no_devices_found(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test if no devices found."""
     flow = config_entries.HANDLERS["test"]()
     flow.hass = hass
@@ -67,7 +72,9 @@ async def test_user_no_devices_found(hass: HomeAssistant, discovery_flow_conf) -
     assert result["reason"] == "no_devices_found"
 
 
-async def test_user_has_confirmation(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_user_has_confirmation(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test user requires confirmation to setup."""
     discovery_flow_conf["discovered"] = True
     mock_entity_platform(hass, "config_flow.test", None)
@@ -104,7 +111,7 @@ async def test_user_has_confirmation(hass: HomeAssistant, discovery_flow_conf) -
     ],
 )
 async def test_discovery_single_instance(
-    hass: HomeAssistant, discovery_flow_conf, source
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool], source: str
 ) -> None:
     """Test we not allow duplicates."""
     flow = config_entries.HANDLERS["test"]()
@@ -130,7 +137,7 @@ async def test_discovery_single_instance(
     ],
 )
 async def test_discovery_confirmation(
-    hass: HomeAssistant, discovery_flow_conf, source
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool], source: str
 ) -> None:
     """Test we ask for confirmation via discovery."""
     flow = config_entries.HANDLERS["test"]()
@@ -158,7 +165,7 @@ async def test_discovery_confirmation(
     ],
 )
 async def test_discovery_during_onboarding(
-    hass: HomeAssistant, discovery_flow_conf, source
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool], source: str
 ) -> None:
     """Test we create config entry via discovery during onboarding."""
     flow = config_entries.HANDLERS["test"]()
@@ -173,7 +180,9 @@ async def test_discovery_during_onboarding(
     assert result["type"] == data_entry_flow.FlowResultType.CREATE_ENTRY
 
 
-async def test_multiple_discoveries(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_multiple_discoveries(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test we only create one instance for multiple discoveries."""
     mock_entity_platform(hass, "config_flow.test", None)
 
@@ -189,7 +198,9 @@ async def test_multiple_discoveries(hass: HomeAssistant, discovery_flow_conf) ->
     assert result["type"] == data_entry_flow.FlowResultType.ABORT
 
 
-async def test_only_one_in_progress(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_only_one_in_progress(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test a user initialized one will finish and cancel discovered one."""
     mock_entity_platform(hass, "config_flow.test", None)
 
@@ -215,7 +226,9 @@ async def test_only_one_in_progress(hass: HomeAssistant, discovery_flow_conf) ->
     assert len(hass.config_entries.flow.async_progress()) == 0
 
 
-async def test_import_abort_discovery(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_import_abort_discovery(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test import will finish and cancel discovered one."""
     mock_entity_platform(hass, "config_flow.test", None)
 
@@ -236,7 +249,9 @@ async def test_import_abort_discovery(hass: HomeAssistant, discovery_flow_conf)
     assert len(hass.config_entries.flow.async_progress()) == 0
 
 
-async def test_import_no_confirmation(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_import_no_confirmation(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test import requires no confirmation to set up."""
     flow = config_entries.HANDLERS["test"]()
     flow.hass = hass
@@ -247,7 +262,9 @@ async def test_import_no_confirmation(hass: HomeAssistant, discovery_flow_conf)
     assert result["type"] == data_entry_flow.FlowResultType.CREATE_ENTRY
 
 
-async def test_import_single_instance(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_import_single_instance(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test import doesn't create second instance."""
     flow = config_entries.HANDLERS["test"]()
     flow.hass = hass
@@ -259,7 +276,9 @@ async def test_import_single_instance(hass: HomeAssistant, discovery_flow_conf)
     assert result["type"] == data_entry_flow.FlowResultType.ABORT
 
 
-async def test_ignored_discoveries(hass: HomeAssistant, discovery_flow_conf) -> None:
+async def test_ignored_discoveries(
+    hass: HomeAssistant, discovery_flow_conf: dict[str, bool]
+) -> None:
     """Test we can ignore discovered entries."""
     mock_entity_platform(hass, "config_flow.test", None)
 
@@ -292,7 +311,7 @@ async def test_ignored_discoveries(hass: HomeAssistant, discovery_flow_conf) ->
 
 
 async def test_webhook_single_entry_allowed(
-    hass: HomeAssistant, webhook_flow_conf
+    hass: HomeAssistant, webhook_flow_conf: None
 ) -> None:
     """Test only a single entry is allowed."""
     flow = config_entries.HANDLERS["test_single"]()
@@ -306,7 +325,7 @@ async def test_webhook_single_entry_allowed(
 
 
 async def test_webhook_multiple_entries_allowed(
-    hass: HomeAssistant, webhook_flow_conf
+    hass: HomeAssistant, webhook_flow_conf: None
 ) -> None:
     """Test multiple entries are allowed when specified."""
     flow = config_entries.HANDLERS["test_multiple"]()
@@ -320,7 +339,7 @@ async def test_webhook_multiple_entries_allowed(
 
 
 async def test_webhook_config_flow_registers_webhook(
-    hass: HomeAssistant, webhook_flow_conf
+    hass: HomeAssistant, webhook_flow_conf: None
 ) -> None:
     """Test setting up an entry creates a webhook."""
     flow = config_entries.HANDLERS["test_single"]()
@@ -336,7 +355,9 @@ async def test_webhook_config_flow_registers_webhook(
     assert result["data"]["webhook_id"] is not None
 
 
-async def test_webhook_create_cloudhook(hass: HomeAssistant, webhook_flow_conf) -> None:
+async def test_webhook_create_cloudhook(
+    hass: HomeAssistant, webhook_flow_conf: None
+) -> None:
     """Test cloudhook will be created if subscribed."""
     assert await setup.async_setup_component(hass, "cloud", {})
 
@@ -390,7 +411,7 @@ async def test_webhook_create_cloudhook(hass: HomeAssistant, webhook_flow_conf)
 
 
 async def test_webhook_create_cloudhook_aborts_not_connected(
-    hass: HomeAssistant, webhook_flow_conf
+    hass: HomeAssistant, webhook_flow_conf: None
 ) -> None:
     """Test cloudhook aborts if subscribed but not connected."""
     assert await setup.async_setup_component(hass, "cloud", {})
diff --git a/tests/helpers/test_entity.py b/tests/helpers/test_entity.py
index 4b505c894b5..2b9a332e825 100644
--- a/tests/helpers/test_entity.py
+++ b/tests/helpers/test_entity.py
@@ -914,7 +914,10 @@ async def test_entity_description_fallback() -> None:
     ),
 )
 async def test_friendly_name(
-    hass: HomeAssistant, has_entity_name, entity_name, expected_friendly_name
+    hass: HomeAssistant,
+    has_entity_name: bool,
+    entity_name: str | None,
+    expected_friendly_name: str | None,
 ) -> None:
     """Test entity_id is influenced by entity name."""
 
diff --git a/tests/helpers/test_entity_component.py b/tests/helpers/test_entity_component.py
index ac5108cb28f..018fb6c9372 100644
--- a/tests/helpers/test_entity_component.py
+++ b/tests/helpers/test_entity_component.py
@@ -18,6 +18,8 @@ from homeassistant.core import HomeAssistant, ServiceCall, callback
 from homeassistant.exceptions import PlatformNotReady
 from homeassistant.helpers import discovery
 from homeassistant.helpers.entity_component import EntityComponent, async_update_entity
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.setup import async_setup_component
 import homeassistant.util.dt as dt_util
 
@@ -90,7 +92,7 @@ async def test_setup_recovers_when_setup_raises(hass: HomeAssistant) -> None:
 )
 @patch("homeassistant.setup.async_setup_component", return_value=True)
 async def test_setup_does_discovery(
-    mock_setup_component, mock_setup, hass: HomeAssistant
+    mock_setup_component: AsyncMock, mock_setup: AsyncMock, hass: HomeAssistant
 ) -> None:
     """Test setup for discovery."""
     component = EntityComponent(_LOGGER, DOMAIN, hass)
@@ -108,10 +110,17 @@ async def test_setup_does_discovery(
 
 
 @patch("homeassistant.helpers.entity_platform.async_track_time_interval")
-async def test_set_scan_interval_via_config(mock_track, hass: HomeAssistant) -> None:
+async def test_set_scan_interval_via_config(
+    mock_track: Mock, hass: HomeAssistant
+) -> None:
     """Test the setting of the scan interval via configuration."""
 
-    def platform_setup(hass, config, add_entities, discovery_info=None):
+    def platform_setup(
+        hass: HomeAssistant,
+        config: ConfigType,
+        add_entities: AddEntitiesCallback,
+        discovery_info: DiscoveryInfoType | None = None,
+    ) -> None:
         """Test the platform setup."""
         add_entities([MockEntity(should_poll=True)])
 
@@ -131,7 +140,12 @@ async def test_set_scan_interval_via_config(mock_track, hass: HomeAssistant) ->
 async def test_set_entity_namespace_via_config(hass: HomeAssistant) -> None:
     """Test setting an entity namespace."""
 
-    def platform_setup(hass, config, add_entities, discovery_info=None):
+    def platform_setup(
+        hass: HomeAssistant,
+        config: ConfigType,
+        add_entities: AddEntitiesCallback,
+        discovery_info: DiscoveryInfoType | None = None,
+    ) -> None:
         """Test the platform setup."""
         add_entities([MockEntity(name="beer"), MockEntity(name=None)])
 
diff --git a/tests/helpers/test_entity_platform.py b/tests/helpers/test_entity_platform.py
index 597045f557f..7163461ae1c 100644
--- a/tests/helpers/test_entity_platform.py
+++ b/tests/helpers/test_entity_platform.py
@@ -23,6 +23,7 @@ from homeassistant.helpers.entity_component import (
     DEFAULT_SCAN_INTERVAL,
     EntityComponent,
 )
+from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 import homeassistant.util.dt as dt_util
 
 from tests.common import (
@@ -81,11 +82,11 @@ async def test_polling_updates_entities_with_exception(hass: HomeAssistant) -> N
     update_ok = []
     update_err = []
 
-    def update_mock():
+    def update_mock() -> None:
         """Mock normal update."""
         update_ok.append(None)
 
-    def update_mock_err():
+    def update_mock_err() -> None:
         """Mock error update."""
         update_err.append(None)
         raise AssertionError("Fake error update")
@@ -161,10 +162,17 @@ async def test_update_state_adds_entities_with_update_before_add_false(
 
 
 @patch("homeassistant.helpers.entity_platform.async_track_time_interval")
-async def test_set_scan_interval_via_platform(mock_track, hass: HomeAssistant) -> None:
+async def test_set_scan_interval_via_platform(
+    mock_track: Mock, hass: HomeAssistant
+) -> None:
     """Test the setting of the scan interval via platform."""
 
-    def platform_setup(hass, config, add_entities, discovery_info=None):
+    def platform_setup(
+        hass: HomeAssistant,
+        config: ConfigType,
+        add_entities: entity_platform.AddEntitiesCallback,
+        discovery_info: DiscoveryInfoType | None = None,
+    ) -> None:
         """Test the platform setup."""
         add_entities([MockEntity(should_poll=True)])
 
@@ -192,7 +200,7 @@ async def test_adding_entities_with_generator_and_thread_callback(
     """
     component = EntityComponent(_LOGGER, DOMAIN, hass)
 
-    def create_entity(number):
+    def create_entity(number: int) -> MockEntity:
         """Create entity helper."""
         entity = MockEntity(unique_id=f"unique{number}")
         entity.entity_id = async_generate_entity_id(DOMAIN + ".{}", "Number", hass=hass)
@@ -402,7 +410,7 @@ async def test_raise_error_on_update(hass: HomeAssistant) -> None:
     entity1 = MockEntity(name="test_1")
     entity2 = MockEntity(name="test_2")
 
-    def _raise():
+    def _raise() -> None:
         """Raise an exception."""
         raise AssertionError
 
@@ -1490,7 +1498,10 @@ class SlowEntity(MockEntity):
     ),
 )
 async def test_entity_name_influences_entity_id(
-    hass: HomeAssistant, has_entity_name, entity_name, expected_entity_id
+    hass: HomeAssistant,
+    has_entity_name: bool,
+    entity_name: str | None,
+    expected_entity_id: str,
 ) -> None:
     """Test entity_id is influenced by entity name."""
     registry = er.async_get(hass)
diff --git a/tests/helpers/test_event.py b/tests/helpers/test_event.py
index 066460c90d8..d9ad81561cc 100644
--- a/tests/helpers/test_event.py
+++ b/tests/helpers/test_event.py
@@ -10,6 +10,7 @@ from astral import LocationInfo
 import astral.sun
 import async_timeout
 from freezegun import freeze_time
+from freezegun.api import FrozenDateTimeFactory
 import jinja2
 import pytest
 
@@ -1406,7 +1407,7 @@ async def test_track_template_result_super_template_initially_false(
     ],
 )
 async def test_track_template_result_super_template_2(
-    hass: HomeAssistant, availability_template
+    hass: HomeAssistant, availability_template: str
 ) -> None:
     """Test tracking template with super template listening to different entities."""
     specific_runs = []
@@ -1545,7 +1546,7 @@ async def test_track_template_result_super_template_2(
     ],
 )
 async def test_track_template_result_super_template_2_initially_false(
-    hass: HomeAssistant, availability_template
+    hass: HomeAssistant, availability_template: str
 ) -> None:
     """Test tracking template with super template listening to different entities."""
     specific_runs = []
@@ -3898,7 +3899,9 @@ async def test_periodic_task_duplicate_time(hass: HomeAssistant) -> None:
 
 # DST starts early morning March 28th 2021
 @pytest.mark.freeze_time("2021-03-28 01:28:00+01:00")
-async def test_periodic_task_entering_dst(hass: HomeAssistant, freezer) -> None:
+async def test_periodic_task_entering_dst(
+    hass: HomeAssistant, freezer: FrozenDateTimeFactory
+) -> None:
     """Test periodic task behavior when entering dst."""
     hass.config.set_time_zone("Europe/Vienna")
     specific_runs = []
@@ -3944,7 +3947,9 @@ async def test_periodic_task_entering_dst(hass: HomeAssistant, freezer) -> None:
 
 # DST starts early morning March 28th 2021
 @pytest.mark.freeze_time("2021-03-28 01:59:59+01:00")
-async def test_periodic_task_entering_dst_2(hass: HomeAssistant, freezer) -> None:
+async def test_periodic_task_entering_dst_2(
+    hass: HomeAssistant, freezer: FrozenDateTimeFactory
+) -> None:
     """Test periodic task behavior when entering dst.
 
     This tests a task firing every second in the range 0..58 (not *:*:59)
@@ -3995,7 +4000,9 @@ async def test_periodic_task_entering_dst_2(hass: HomeAssistant, freezer) -> Non
 
 # DST ends early morning October 31st 2021
 @pytest.mark.freeze_time("2021-10-31 02:28:00+02:00")
-async def test_periodic_task_leaving_dst(hass: HomeAssistant, freezer) -> None:
+async def test_periodic_task_leaving_dst(
+    hass: HomeAssistant, freezer: FrozenDateTimeFactory
+) -> None:
     """Test periodic task behavior when leaving dst."""
     hass.config.set_time_zone("Europe/Vienna")
     specific_runs = []
@@ -4069,7 +4076,9 @@ async def test_periodic_task_leaving_dst(hass: HomeAssistant, freezer) -> None:
 
 # DST ends early morning October 31st 2021
 @pytest.mark.freeze_time("2021-10-31 02:28:00+02:00")
-async def test_periodic_task_leaving_dst_2(hass: HomeAssistant, freezer) -> None:
+async def test_periodic_task_leaving_dst_2(
+    hass: HomeAssistant, freezer: FrozenDateTimeFactory
+) -> None:
     """Test periodic task behavior when leaving dst."""
     hass.config.set_time_zone("Europe/Vienna")
     specific_runs = []