diff --git a/tests/auth/permissions/test_entities.py b/tests/auth/permissions/test_entities.py
index 4b974bad780..ce539d51dde 100644
--- a/tests/auth/permissions/test_entities.py
+++ b/tests/auth/permissions/test_entities.py
@@ -7,6 +7,7 @@ from homeassistant.auth.permissions.entities import (
     compile_entities,
 )
 from homeassistant.auth.permissions.models import PermissionLookup
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceEntry
 from homeassistant.helpers.entity_registry import RegistryEntry
 
@@ -149,7 +150,7 @@ def test_entities_all_control() -> None:
     assert compiled("switch.kitchen", "control") is True
 
 
-def test_entities_device_id_boolean(hass):
+def test_entities_device_id_boolean(hass: HomeAssistant) -> None:
     """Test entity ID policy applying control on device id."""
     entity_registry = mock_registry(
         hass,
@@ -189,7 +190,7 @@ def test_entities_areas_true() -> None:
     assert compiled("light.kitchen", "read") is True
 
 
-def test_entities_areas_area_true(hass):
+def test_entities_areas_area_true(hass: HomeAssistant) -> None:
     """Test entity ID policy for areas with specific area."""
     entity_registry = mock_registry(
         hass,
diff --git a/tests/components/alexa/test_smart_home.py b/tests/components/alexa/test_smart_home.py
index 27a8aeda680..08f614fa123 100644
--- a/tests/components/alexa/test_smart_home.py
+++ b/tests/components/alexa/test_smart_home.py
@@ -12,7 +12,7 @@ from homeassistant.components.media_player import MediaPlayerEntityFeature
 import homeassistant.components.vacuum as vacuum
 from homeassistant.config import async_process_ha_core_config
 from homeassistant.const import STATE_UNKNOWN, UnitOfTemperature
-from homeassistant.core import Context
+from homeassistant.core import Context, HomeAssistant
 from homeassistant.helpers import entityfilter
 from homeassistant.setup import async_setup_component
 from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
@@ -54,7 +54,7 @@ async def mock_stream(hass):
     await hass.async_block_till_done()
 
 
-def test_create_api_message_defaults(hass):
+def test_create_api_message_defaults(hass: HomeAssistant) -> None:
     """Create an API message response of a request with defaults."""
     request = get_new_request("Alexa.PowerController", "TurnOn", "switch#xy")
     directive_header = request["directive"]["header"]
diff --git a/tests/components/demo/test_climate.py b/tests/components/demo/test_climate.py
index 67431ebb208..2ab274d0221 100644
--- a/tests/components/demo/test_climate.py
+++ b/tests/components/demo/test_climate.py
@@ -41,6 +41,7 @@ from homeassistant.const import (
     STATE_OFF,
     STATE_ON,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 from homeassistant.util.unit_system import METRIC_SYSTEM
 
@@ -57,7 +58,7 @@ async def setup_demo_climate(hass):
     await hass.async_block_till_done()
 
 
-def test_setup_params(hass):
+def test_setup_params(hass: HomeAssistant) -> None:
     """Test the initial parameters."""
     state = hass.states.get(ENTITY_CLIMATE)
     assert state.state == HVACMode.COOL
@@ -78,7 +79,7 @@ def test_setup_params(hass):
     ]
 
 
-def test_default_setup_params(hass):
+def test_default_setup_params(hass: HomeAssistant) -> None:
     """Test the setup with default parameters."""
     state = hass.states.get(ENTITY_CLIMATE)
     assert state.attributes.get(ATTR_MIN_TEMP) == 7
diff --git a/tests/components/demo/test_humidifier.py b/tests/components/demo/test_humidifier.py
index f4c90612f81..6a806019550 100644
--- a/tests/components/demo/test_humidifier.py
+++ b/tests/components/demo/test_humidifier.py
@@ -21,6 +21,7 @@ from homeassistant.const import (
     STATE_OFF,
     STATE_ON,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 ENTITY_DEHUMIDIFIER = "humidifier.dehumidifier"
@@ -37,14 +38,14 @@ async def setup_demo_humidifier(hass):
     await hass.async_block_till_done()
 
 
-def test_setup_params(hass):
+def test_setup_params(hass: HomeAssistant) -> None:
     """Test the initial parameters."""
     state = hass.states.get(ENTITY_DEHUMIDIFIER)
     assert state.state == STATE_ON
     assert state.attributes.get(ATTR_HUMIDITY) == 54
 
 
-def test_default_setup_params(hass):
+def test_default_setup_params(hass: HomeAssistant) -> None:
     """Test the setup with default parameters."""
     state = hass.states.get(ENTITY_DEHUMIDIFIER)
     assert state.attributes.get(ATTR_MIN_HUMIDITY) == 0
diff --git a/tests/components/demo/test_number.py b/tests/components/demo/test_number.py
index e8740d067f9..b0bfb602e76 100644
--- a/tests/components/demo/test_number.py
+++ b/tests/components/demo/test_number.py
@@ -13,6 +13,7 @@ from homeassistant.components.number import (
     NumberMode,
 )
 from homeassistant.const import ATTR_ENTITY_ID, ATTR_MODE
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 ENTITY_VOLUME = "number.volume"
@@ -28,13 +29,13 @@ async def setup_demo_number(hass):
     await hass.async_block_till_done()
 
 
-def test_setup_params(hass):
+def test_setup_params(hass: HomeAssistant) -> None:
     """Test the initial parameters."""
     state = hass.states.get(ENTITY_VOLUME)
     assert state.state == "42.0"
 
 
-def test_default_setup_params(hass):
+def test_default_setup_params(hass: HomeAssistant) -> None:
     """Test the setup with default parameters."""
     state = hass.states.get(ENTITY_VOLUME)
     assert state.attributes.get(ATTR_MIN) == 0.0
diff --git a/tests/components/demo/test_siren.py b/tests/components/demo/test_siren.py
index 4418a70a546..b649e1e283c 100644
--- a/tests/components/demo/test_siren.py
+++ b/tests/components/demo/test_siren.py
@@ -17,6 +17,7 @@ from homeassistant.const import (
     STATE_OFF,
     STATE_ON,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 ENTITY_SIREN = "siren.siren"
@@ -30,14 +31,14 @@ async def setup_demo_siren(hass):
     await hass.async_block_till_done()
 
 
-def test_setup_params(hass):
+def test_setup_params(hass: HomeAssistant) -> None:
     """Test the initial parameters."""
     state = hass.states.get(ENTITY_SIREN)
     assert state.state == STATE_ON
     assert ATTR_AVAILABLE_TONES not in state.attributes
 
 
-def test_all_setup_params(hass):
+def test_all_setup_params(hass: HomeAssistant) -> None:
     """Test the setup with all parameters."""
     state = hass.states.get(ENTITY_SIREN_WITH_ALL_FEATURES)
     assert state.attributes.get(ATTR_AVAILABLE_TONES) == ["fire", "alarm"]
diff --git a/tests/components/demo/test_text.py b/tests/components/demo/test_text.py
index df93531bd1a..1d48f8b649f 100644
--- a/tests/components/demo/test_text.py
+++ b/tests/components/demo/test_text.py
@@ -10,6 +10,7 @@ from homeassistant.components.text import (
     SERVICE_SET_VALUE,
 )
 from homeassistant.const import ATTR_ENTITY_ID, ATTR_MODE, MAX_LENGTH_STATE_STATE
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 ENTITY_TEXT = "text.text"
@@ -22,7 +23,7 @@ async def setup_demo_text(hass):
     await hass.async_block_till_done()
 
 
-def test_setup_params(hass):
+def test_setup_params(hass: HomeAssistant) -> None:
     """Test the initial parameters."""
     state = hass.states.get(ENTITY_TEXT)
     assert state.state == "Hello world"
diff --git a/tests/components/eight_sleep/test_config_flow.py b/tests/components/eight_sleep/test_config_flow.py
index 1cace5b31cd..9e5a77ab36c 100644
--- a/tests/components/eight_sleep/test_config_flow.py
+++ b/tests/components/eight_sleep/test_config_flow.py
@@ -1,10 +1,11 @@
 """Test the Eight Sleep config flow."""
 from homeassistant import config_entries
 from homeassistant.components.eight_sleep.const import DOMAIN
+from homeassistant.core import HomeAssistant
 from homeassistant.data_entry_flow import FlowResultType
 
 
-async def test_form(hass) -> None:
+async def test_form(hass: HomeAssistant) -> None:
     """Test we get the form."""
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": config_entries.SOURCE_USER}
@@ -48,7 +49,7 @@ async def test_form_invalid_auth(hass, token_error) -> None:
     assert result2["errors"] == {"base": "cannot_connect"}
 
 
-async def test_import(hass) -> None:
+async def test_import(hass: HomeAssistant) -> None:
     """Test import works."""
     result = await hass.config_entries.flow.async_init(
         DOMAIN,
diff --git a/tests/components/generic/test_config_flow.py b/tests/components/generic/test_config_flow.py
index 5617f09a33f..5dd7fef018a 100644
--- a/tests/components/generic/test_config_flow.py
+++ b/tests/components/generic/test_config_flow.py
@@ -34,6 +34,7 @@ from homeassistant.const import (
     CONF_VERIFY_SSL,
     HTTP_BASIC_AUTHENTICATION,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import entity_registry
 
 from tests.common import MockConfigEntry
@@ -736,7 +737,7 @@ async def test_unload_entry(hass, fakeimg_png):
     assert mock_entry.state is config_entries.ConfigEntryState.NOT_LOADED
 
 
-async def test_reload_on_title_change(hass) -> None:
+async def test_reload_on_title_change(hass: HomeAssistant) -> None:
     """Test the integration gets reloaded when the title is updated."""
 
     test_data = TESTDATA_OPTIONS
@@ -758,7 +759,7 @@ async def test_reload_on_title_change(hass) -> None:
     assert hass.states.get("camera.my_title").attributes["friendly_name"] == "New Title"
 
 
-async def test_migrate_existing_ids(hass) -> None:
+async def test_migrate_existing_ids(hass: HomeAssistant) -> None:
     """Test that existing ids are migrated for issue #70568."""
 
     registry = entity_registry.async_get(hass)
diff --git a/tests/components/hassio/test_http.py b/tests/components/hassio/test_http.py
index 7947f7cccae..2fc41380bef 100644
--- a/tests/components/hassio/test_http.py
+++ b/tests/components/hassio/test_http.py
@@ -6,6 +6,7 @@ from aiohttp import StreamReader
 import pytest
 
 from homeassistant.components.hassio.http import _need_auth
+from homeassistant.core import HomeAssistant
 
 
 async def test_forward_request(hassio_client, aioclient_mock):
@@ -170,7 +171,7 @@ async def test_backup_download_headers(hassio_client, aioclient_mock):
     assert resp.headers["Content-Disposition"] == content_disposition
 
 
-def test_need_auth(hass):
+def test_need_auth(hass: HomeAssistant) -> None:
     """Test if the requested path needs authentication."""
     assert not _need_auth(hass, "addons/test/logo")
     assert _need_auth(hass, "backups/new/upload")
diff --git a/tests/components/integration/test_sensor.py b/tests/components/integration/test_sensor.py
index 12f9781a81a..e0fa8036a2f 100644
--- a/tests/components/integration/test_sensor.py
+++ b/tests/components/integration/test_sensor.py
@@ -20,7 +20,7 @@ import homeassistant.util.dt as dt_util
 from tests.common import mock_restore_cache
 
 
-async def test_state(hass) -> None:
+async def test_state(hass: HomeAssistant) -> None:
     """Test integration sensor state."""
     config = {
         "sensor": {
diff --git a/tests/components/kira/test_remote.py b/tests/components/kira/test_remote.py
index 03268200077..105d457bf89 100644
--- a/tests/components/kira/test_remote.py
+++ b/tests/components/kira/test_remote.py
@@ -2,6 +2,7 @@
 from unittest.mock import MagicMock
 
 from homeassistant.components.kira import remote as kira
+from homeassistant.core import HomeAssistant
 
 SERVICE_SEND_COMMAND = "send_command"
 
@@ -18,7 +19,7 @@ def add_entities(devices):
         DEVICES.append(device)
 
 
-def test_service_call(hass):
+def test_service_call(hass: HomeAssistant) -> None:
     """Test Kira's ability to send commands."""
     mock_kira = MagicMock()
     hass.data[kira.DOMAIN] = {kira.CONF_REMOTE: {}}
diff --git a/tests/components/mazda/test_button.py b/tests/components/mazda/test_button.py
index 81ad175020e..993228bc994 100644
--- a/tests/components/mazda/test_button.py
+++ b/tests/components/mazda/test_button.py
@@ -5,13 +5,14 @@ import pytest
 
 from homeassistant.components.button import DOMAIN as BUTTON_DOMAIN, SERVICE_PRESS
 from homeassistant.const import ATTR_ENTITY_ID, ATTR_FRIENDLY_NAME, ATTR_ICON
+from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import entity_registry as er
 
 from . import init_integration
 
 
-async def test_button_setup_non_electric_vehicle(hass) -> None:
+async def test_button_setup_non_electric_vehicle(hass: HomeAssistant) -> None:
     """Test creation of button entities."""
     await init_integration(hass)
 
@@ -58,7 +59,7 @@ async def test_button_setup_non_electric_vehicle(hass) -> None:
     assert state is None
 
 
-async def test_button_setup_electric_vehicle(hass) -> None:
+async def test_button_setup_electric_vehicle(hass: HomeAssistant) -> None:
     """Test creation of button entities for an electric vehicle."""
     await init_integration(hass, electric_vehicle=True)
 
@@ -133,7 +134,7 @@ async def test_button_press(hass, entity_id_suffix, api_method_name) -> None:
     api_method.assert_called_once_with(12345)
 
 
-async def test_button_press_error(hass) -> None:
+async def test_button_press_error(hass: HomeAssistant) -> None:
     """Test the Mazda API raising an error when a button entity is pressed."""
     client_mock = await init_integration(hass)
 
diff --git a/tests/components/mqtt/test_text.py b/tests/components/mqtt/test_text.py
index 6b4680bd030..e42c97b37ee 100644
--- a/tests/components/mqtt/test_text.py
+++ b/tests/components/mqtt/test_text.py
@@ -172,7 +172,7 @@ async def test_controlling_validation_state_via_topic(
     assert state.state == "no"
 
 
-async def test_attribute_validation_max_greater_then_min(hass) -> None:
+async def test_attribute_validation_max_greater_then_min(hass: HomeAssistant) -> None:
     """Test the validation of min and max configuration attributes."""
     assert not await async_setup_component(
         hass,
@@ -190,7 +190,9 @@ async def test_attribute_validation_max_greater_then_min(hass) -> None:
     )
 
 
-async def test_attribute_validation_max_not_greater_then_max_state_length(hass) -> None:
+async def test_attribute_validation_max_not_greater_then_max_state_length(
+    hass: HomeAssistant,
+) -> None:
     """Test the max value of of max configuration attribute."""
     assert not await async_setup_component(
         hass,
diff --git a/tests/components/nx584/test_binary_sensor.py b/tests/components/nx584/test_binary_sensor.py
index cb6670d198e..f239953ca15 100644
--- a/tests/components/nx584/test_binary_sensor.py
+++ b/tests/components/nx584/test_binary_sensor.py
@@ -6,6 +6,7 @@ import pytest
 import requests
 
 from homeassistant.components.nx584 import binary_sensor as nx584
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 DEFAULT_CONFIG = {
@@ -133,7 +134,7 @@ async def test_nx584_sensor_setup_version_too_old(hass):
 
 
 @pytest.mark.usefixtures("client")
-def test_nx584_sensor_setup_no_zones(hass):
+def test_nx584_sensor_setup_no_zones(hass: HomeAssistant) -> None:
     """Test the setup with no zones."""
     nx584_client.Client.return_value.list_zones.return_value = []
     add_entities = mock.MagicMock()
diff --git a/tests/components/pilight/test_init.py b/tests/components/pilight/test_init.py
index 9b2f9ebf4d5..74c6826891c 100644
--- a/tests/components/pilight/test_init.py
+++ b/tests/components/pilight/test_init.py
@@ -7,6 +7,7 @@ from unittest.mock import patch
 from voluptuous import MultipleInvalid
 
 from homeassistant.components import pilight
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 from homeassistant.util import dt as dt_util
 
@@ -388,7 +389,7 @@ async def test_call_rate_delay_throttle_enabled(hass):
         assert runs == exp
 
 
-def test_call_rate_delay_throttle_disabled(hass):
+def test_call_rate_delay_throttle_disabled(hass: HomeAssistant) -> None:
     """Test that the limiter is a noop if no delay set."""
     runs = []
 
diff --git a/tests/components/plant/test_init.py b/tests/components/plant/test_init.py
index 15ad409b4cc..bc2d5024574 100644
--- a/tests/components/plant/test_init.py
+++ b/tests/components/plant/test_init.py
@@ -10,7 +10,7 @@ from homeassistant.const import (
     STATE_PROBLEM,
     STATE_UNAVAILABLE,
 )
-from homeassistant.core import State
+from homeassistant.core import HomeAssistant, State
 from homeassistant.setup import async_setup_component
 
 from tests.components.recorder.common import async_wait_recording_done
@@ -192,13 +192,13 @@ async def test_brightness_history(hass):
     assert state.state == STATE_OK
 
 
-def test_daily_history_no_data(hass):
+def test_daily_history_no_data(hass: HomeAssistant) -> None:
     """Test with empty history."""
     dh = plant.DailyHistory(3)
     assert dh.max is None
 
 
-def test_daily_history_one_day(hass):
+def test_daily_history_one_day(hass: HomeAssistant) -> None:
     """Test storing data for the same day."""
     dh = plant.DailyHistory(3)
     values = [-2, 10, 0, 5, 20]
@@ -209,7 +209,7 @@ def test_daily_history_one_day(hass):
         assert dh.max == max_value
 
 
-def test_daily_history_multiple_days(hass):
+def test_daily_history_multiple_days(hass: HomeAssistant) -> None:
     """Test storing data for different days."""
     dh = plant.DailyHistory(3)
     today = datetime.now()
diff --git a/tests/components/powerwall/test_config_flow.py b/tests/components/powerwall/test_config_flow.py
index 11861a8238c..0f47964ce59 100644
--- a/tests/components/powerwall/test_config_flow.py
+++ b/tests/components/powerwall/test_config_flow.py
@@ -12,6 +12,7 @@ from homeassistant import config_entries
 from homeassistant.components import dhcp
 from homeassistant.components.powerwall.const import DOMAIN
 from homeassistant.const import CONF_IP_ADDRESS, CONF_PASSWORD
+from homeassistant.core import HomeAssistant
 from homeassistant.data_entry_flow import FlowResultType
 
 from .mocks import (
@@ -507,7 +508,9 @@ async def test_dhcp_discovery_updates_unique_id_when_entry_is_failed(hass):
     assert entry.unique_id == MOCK_GATEWAY_DIN
 
 
-async def test_discovered_wifi_does_not_update_ip_if_is_still_online(hass) -> None:
+async def test_discovered_wifi_does_not_update_ip_if_is_still_online(
+    hass: HomeAssistant,
+) -> None:
     """Test a discovery does not update the ip unless the powerwall at the old ip is offline."""
     entry = MockConfigEntry(
         domain=DOMAIN,
diff --git a/tests/components/ps4/test_init.py b/tests/components/ps4/test_init.py
index bedfa7989f2..e8cc9b633a1 100644
--- a/tests/components/ps4/test_init.py
+++ b/tests/components/ps4/test_init.py
@@ -25,6 +25,7 @@ from homeassistant.const import (
     CONF_REGION,
     CONF_TOKEN,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.setup import async_setup_component
 from homeassistant.util import location
@@ -195,7 +196,7 @@ async def setup_mock_component(hass):
     await hass.async_block_till_done()
 
 
-def test_games_reformat_to_dict(hass):
+def test_games_reformat_to_dict(hass: HomeAssistant) -> None:
     """Test old data format is converted to new format."""
     with patch(
         "homeassistant.components.ps4.load_json",
@@ -218,7 +219,7 @@ def test_games_reformat_to_dict(hass):
         assert mock_data[ATTR_MEDIA_CONTENT_TYPE] == MediaType.GAME
 
 
-def test_load_games(hass):
+def test_load_games(hass: HomeAssistant) -> None:
     """Test that games are loaded correctly."""
     with patch(
         "homeassistant.components.ps4.load_json", return_value=MOCK_GAMES
@@ -237,7 +238,7 @@ def test_load_games(hass):
     assert mock_data[ATTR_MEDIA_CONTENT_TYPE] == MediaType.GAME
 
 
-def test_loading_games_returns_dict(hass):
+def test_loading_games_returns_dict(hass: HomeAssistant) -> None:
     """Test that loading games always returns a dict."""
     with patch(
         "homeassistant.components.ps4.load_json", side_effect=HomeAssistantError
diff --git a/tests/components/recorder/test_init.py b/tests/components/recorder/test_init.py
index cf4a5935933..63973b87585 100644
--- a/tests/components/recorder/test_init.py
+++ b/tests/components/recorder/test_init.py
@@ -729,7 +729,7 @@ def test_saving_state_with_oversized_attributes(hass_recorder, caplog):
     assert states[1].attributes == {}
 
 
-def test_recorder_setup_failure(hass):
+def test_recorder_setup_failure(hass: HomeAssistant) -> None:
     """Test some exceptions."""
     recorder_helper.async_initialize_recorder(hass)
     with patch.object(Recorder, "_setup_connection") as setup, patch(
@@ -744,7 +744,7 @@ def test_recorder_setup_failure(hass):
     hass.stop()
 
 
-def test_recorder_validate_schema_failure(hass):
+def test_recorder_validate_schema_failure(hass: HomeAssistant) -> None:
     """Test some exceptions."""
     recorder_helper.async_initialize_recorder(hass)
     with patch(
@@ -761,7 +761,7 @@ def test_recorder_validate_schema_failure(hass):
     hass.stop()
 
 
-def test_recorder_setup_failure_without_event_listener(hass):
+def test_recorder_setup_failure_without_event_listener(hass: HomeAssistant) -> None:
     """Test recorder setup failure when the event listener is not setup."""
     recorder_helper.async_initialize_recorder(hass)
     with patch.object(Recorder, "_setup_connection") as setup, patch(
diff --git a/tests/components/recorder/test_migrate.py b/tests/components/recorder/test_migrate.py
index 39e1247abca..186806fc964 100644
--- a/tests/components/recorder/test_migrate.py
+++ b/tests/components/recorder/test_migrate.py
@@ -27,6 +27,7 @@ from homeassistant.components.recorder.db_schema import (
     States,
 )
 from homeassistant.components.recorder.util import session_scope
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import recorder as recorder_helper
 import homeassistant.util.dt as dt_util
 
@@ -365,7 +366,7 @@ async def test_schema_migrate(hass, start_version, live):
         assert recorder.util.async_migration_in_progress(hass) is not True
 
 
-def test_invalid_update(hass):
+def test_invalid_update(hass: HomeAssistant) -> None:
     """Test that an invalid new version raises an exception."""
     with pytest.raises(ValueError):
         migration._apply_update(hass, Mock(), Mock(), -1, 0)
diff --git a/tests/components/remember_the_milk/test_init.py b/tests/components/remember_the_milk/test_init.py
index 9d463165819..703e1de7b93 100644
--- a/tests/components/remember_the_milk/test_init.py
+++ b/tests/components/remember_the_milk/test_init.py
@@ -2,11 +2,12 @@
 from unittest.mock import Mock, mock_open, patch
 
 import homeassistant.components.remember_the_milk as rtm
+from homeassistant.core import HomeAssistant
 
 from .const import JSON_STRING, PROFILE, TOKEN
 
 
-def test_create_new(hass):
+def test_create_new(hass: HomeAssistant) -> None:
     """Test creating a new config file."""
     with patch("builtins.open", mock_open()), patch(
         "os.path.isfile", Mock(return_value=False)
@@ -16,7 +17,7 @@ def test_create_new(hass):
     assert config.get_token(PROFILE) == TOKEN
 
 
-def test_load_config(hass):
+def test_load_config(hass: HomeAssistant) -> None:
     """Test loading an existing token from the file."""
     with patch("builtins.open", mock_open(read_data=JSON_STRING)), patch(
         "os.path.isfile", Mock(return_value=True)
@@ -25,7 +26,7 @@ def test_load_config(hass):
     assert config.get_token(PROFILE) == TOKEN
 
 
-def test_invalid_data(hass):
+def test_invalid_data(hass: HomeAssistant) -> None:
     """Test starts with invalid data and should not raise an exception."""
     with patch("builtins.open", mock_open(read_data="random characters")), patch(
         "os.path.isfile", Mock(return_value=True)
@@ -34,7 +35,7 @@ def test_invalid_data(hass):
     assert config is not None
 
 
-def test_id_map(hass):
+def test_id_map(hass: HomeAssistant) -> None:
     """Test the hass to rtm task is mapping."""
     hass_id = "hass-id-1234"
     list_id = "mylist"
@@ -52,7 +53,7 @@ def test_id_map(hass):
         assert config.get_rtm_id(PROFILE, hass_id) is None
 
 
-def test_load_key_map(hass):
+def test_load_key_map(hass: HomeAssistant) -> None:
     """Test loading an existing key map from the file."""
     with patch("builtins.open", mock_open(read_data=JSON_STRING)), patch(
         "os.path.isfile", Mock(return_value=True)
diff --git a/tests/components/sabnzbd/test_config_flow.py b/tests/components/sabnzbd/test_config_flow.py
index f48f788b348..fe0f97b93b4 100644
--- a/tests/components/sabnzbd/test_config_flow.py
+++ b/tests/components/sabnzbd/test_config_flow.py
@@ -14,6 +14,7 @@ from homeassistant.const import (
     CONF_SSL,
     CONF_URL,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.data_entry_flow import FlowResultType
 
 VALID_CONFIG = {
@@ -77,7 +78,7 @@ async def test_auth_error(hass):
         assert result["errors"] == {"base": "cannot_connect"}
 
 
-async def test_import_flow(hass) -> None:
+async def test_import_flow(hass: HomeAssistant) -> None:
     """Test the import configuration flow."""
     with patch(
         "homeassistant.components.sabnzbd.sab.SabnzbdApi.check_available",
diff --git a/tests/components/unifi_direct/test_device_tracker.py b/tests/components/unifi_direct/test_device_tracker.py
index fe68d6d4032..8bc217aae7e 100644
--- a/tests/components/unifi_direct/test_device_tracker.py
+++ b/tests/components/unifi_direct/test_device_tracker.py
@@ -21,6 +21,7 @@ from homeassistant.components.unifi_direct.device_tracker import (
     get_scanner,
 )
 from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_PLATFORM, CONF_USERNAME
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 from tests.common import assert_setup_component, load_fixture, mock_component
@@ -130,13 +131,13 @@ async def test_to_get_update(mock_sendline, mock_prompt, mock_login, mock_logout
     assert devices is None
 
 
-def test_good_response_parses(hass):
+def test_good_response_parses(hass: HomeAssistant) -> None:
     """Test that the response form the AP parses to JSON correctly."""
     response = _response_to_json(load_fixture("data.txt", "unifi_direct"))
     assert response != {}
 
 
-def test_bad_response_returns_none(hass):
+def test_bad_response_returns_none(hass: HomeAssistant) -> None:
     """Test that a bad response form the AP parses to JSON correctly."""
     assert _response_to_json("{(}") == {}
 
diff --git a/tests/components/vicare/test_config_flow.py b/tests/components/vicare/test_config_flow.py
index d2852b33606..8ee5634230e 100644
--- a/tests/components/vicare/test_config_flow.py
+++ b/tests/components/vicare/test_config_flow.py
@@ -7,6 +7,7 @@ from homeassistant import config_entries, data_entry_flow
 from homeassistant.components import dhcp
 from homeassistant.components.vicare.const import DOMAIN
 from homeassistant.const import CONF_CLIENT_ID, CONF_PASSWORD, CONF_USERNAME
+from homeassistant.core import HomeAssistant
 
 from . import ENTRY_CONFIG, MOCK_MAC
 
@@ -44,7 +45,7 @@ async def test_form(hass):
     assert len(mock_setup_entry.mock_calls) == 1
 
 
-async def test_invalid_login(hass) -> None:
+async def test_invalid_login(hass: HomeAssistant) -> None:
     """Test a flow with an invalid Vicare login."""
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": config_entries.SOURCE_USER}
diff --git a/tests/helpers/test_config_validation.py b/tests/helpers/test_config_validation.py
index 39720cafdf3..5d97ff9b5d5 100644
--- a/tests/helpers/test_config_validation.py
+++ b/tests/helpers/test_config_validation.py
@@ -11,6 +11,7 @@ import pytest
 import voluptuous as vol
 
 import homeassistant
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_validation as cv, selector, template
 
 
@@ -487,7 +488,7 @@ def test_slug() -> None:
         schema(value)
 
 
-def test_string(hass):
+def test_string(hass: HomeAssistant) -> None:
     """Test string validation."""
     schema = vol.Schema(cv.string)
 
diff --git a/tests/helpers/test_json.py b/tests/helpers/test_json.py
index a0a318ba27c..30b20c73adf 100644
--- a/tests/helpers/test_json.py
+++ b/tests/helpers/test_json.py
@@ -6,7 +6,7 @@ from typing import NamedTuple
 
 import pytest
 
-from homeassistant import core
+from homeassistant.core import HomeAssistant, State
 from homeassistant.helpers.json import (
     ExtendedJSONEncoder,
     JSONEncoder,
@@ -22,7 +22,7 @@ from homeassistant.util.color import RGBColor
 def test_json_encoder(hass, encoder):
     """Test the JSON encoders."""
     ha_json_enc = encoder()
-    state = core.State("test.test", "hello")
+    state = State("test.test", "hello")
 
     # Test serializing a datetime
     now = dt_util.utcnow()
@@ -36,7 +36,7 @@ def test_json_encoder(hass, encoder):
     assert ha_json_enc.default(state) == state.as_dict()
 
 
-def test_json_encoder_raises(hass):
+def test_json_encoder_raises(hass: HomeAssistant) -> None:
     """Test the JSON encoder raises on unsupported types."""
     ha_json_enc = JSONEncoder()
 
@@ -45,7 +45,7 @@ def test_json_encoder_raises(hass):
         ha_json_enc.default(1)
 
 
-def test_extended_json_encoder(hass):
+def test_extended_json_encoder(hass: HomeAssistant) -> None:
     """Test the extended JSON encoder."""
     ha_json_enc = ExtendedJSONEncoder()
     # Test serializing a timedelta
diff --git a/tests/helpers/test_location.py b/tests/helpers/test_location.py
index 5197468e503..72e4720023b 100644
--- a/tests/helpers/test_location.py
+++ b/tests/helpers/test_location.py
@@ -1,6 +1,6 @@
 """Tests Home Assistant location helpers."""
 from homeassistant.const import ATTR_FRIENDLY_NAME, ATTR_LATITUDE, ATTR_LONGITUDE
-from homeassistant.core import State
+from homeassistant.core import HomeAssistant, State
 from homeassistant.helpers import location
 
 
@@ -101,7 +101,7 @@ async def test_coordinates_function_device_tracker_from_input_select(hass):
     )
 
 
-def test_coordinates_function_returns_none_on_recursion(hass):
+def test_coordinates_function_returns_none_on_recursion(hass: HomeAssistant) -> None:
     """Test coordinates function."""
     hass.states.async_set(
         "test.first",
@@ -120,7 +120,7 @@ async def test_coordinates_function_returns_state_if_no_coords(hass):
     assert location.find_coordinates(hass, "test.object") == "abc"
 
 
-def test_coordinates_function_returns_input_if_no_coords(hass):
+def test_coordinates_function_returns_input_if_no_coords(hass: HomeAssistant) -> None:
     """Test test_coordinates function."""
     assert location.find_coordinates(hass, "test.abc") == "test.abc"
     assert location.find_coordinates(hass, "abc") == "abc"
diff --git a/tests/helpers/test_sun.py b/tests/helpers/test_sun.py
index 1cad1b49bdc..86076221483 100644
--- a/tests/helpers/test_sun.py
+++ b/tests/helpers/test_sun.py
@@ -4,11 +4,12 @@ from datetime import datetime, timedelta
 from unittest.mock import patch
 
 from homeassistant.const import SUN_EVENT_SUNRISE, SUN_EVENT_SUNSET
+from homeassistant.core import HomeAssistant
 import homeassistant.helpers.sun as sun
 import homeassistant.util.dt as dt_util
 
 
-def test_next_events(hass):
+def test_next_events(hass: HomeAssistant) -> None:
     """Test retrieving next sun events."""
     utc_now = datetime(2016, 11, 1, 8, 0, 0, tzinfo=dt_util.UTC)
     from astral import LocationInfo
@@ -83,7 +84,7 @@ def test_next_events(hass):
         assert next_setting == sun.get_astral_event_next(hass, SUN_EVENT_SUNSET)
 
 
-def test_date_events(hass):
+def test_date_events(hass: HomeAssistant) -> None:
     """Test retrieving next sun events."""
     utc_now = datetime(2016, 11, 1, 8, 0, 0, tzinfo=dt_util.UTC)
     from astral import LocationInfo
@@ -110,7 +111,7 @@ def test_date_events(hass):
     assert sunset == sun.get_astral_event_date(hass, SUN_EVENT_SUNSET, utc_today)
 
 
-def test_date_events_default_date(hass):
+def test_date_events_default_date(hass: HomeAssistant) -> None:
     """Test retrieving next sun events."""
     utc_now = datetime(2016, 11, 1, 8, 0, 0, tzinfo=dt_util.UTC)
     from astral import LocationInfo
@@ -138,7 +139,7 @@ def test_date_events_default_date(hass):
         assert sunset == sun.get_astral_event_date(hass, SUN_EVENT_SUNSET, utc_today)
 
 
-def test_date_events_accepts_datetime(hass):
+def test_date_events_accepts_datetime(hass: HomeAssistant) -> None:
     """Test retrieving next sun events."""
     utc_now = datetime(2016, 11, 1, 8, 0, 0, tzinfo=dt_util.UTC)
     from astral import LocationInfo
@@ -165,7 +166,7 @@ def test_date_events_accepts_datetime(hass):
     assert sunset == sun.get_astral_event_date(hass, SUN_EVENT_SUNSET, utc_now)
 
 
-def test_is_up(hass):
+def test_is_up(hass: HomeAssistant) -> None:
     """Test retrieving next sun events."""
     utc_now = datetime(2016, 11, 1, 12, 0, 0, tzinfo=dt_util.UTC)
     with patch("homeassistant.helpers.condition.dt_util.utcnow", return_value=utc_now):
@@ -176,7 +177,7 @@ def test_is_up(hass):
         assert sun.is_up(hass)
 
 
-def test_norway_in_june(hass):
+def test_norway_in_june(hass: HomeAssistant) -> None:
     """Test location in Norway where the sun doesn't set in summer."""
     hass.config.latitude = 69.6
     hass.config.longitude = 18.8
diff --git a/tests/helpers/test_temperature.py b/tests/helpers/test_temperature.py
index 5108e111a10..c4ab540f9d6 100644
--- a/tests/helpers/test_temperature.py
+++ b/tests/helpers/test_temperature.py
@@ -8,12 +8,13 @@ from homeassistant.const import (
     TEMP_CELSIUS,
     TEMP_FAHRENHEIT,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers.temperature import display_temp
 
 TEMP = 24.636626
 
 
-def test_temperature_not_a_number(hass):
+def test_temperature_not_a_number(hass: HomeAssistant) -> None:
     """Test that temperature is a number."""
     temp = "Temperature"
     with pytest.raises(Exception) as exception:
@@ -22,16 +23,16 @@ def test_temperature_not_a_number(hass):
     assert f"Temperature is not a number: {temp}" in str(exception.value)
 
 
-def test_celsius_halves(hass):
+def test_celsius_halves(hass: HomeAssistant) -> None:
     """Test temperature to celsius rounding to halves."""
     assert display_temp(hass, TEMP, TEMP_CELSIUS, PRECISION_HALVES) == 24.5
 
 
-def test_celsius_tenths(hass):
+def test_celsius_tenths(hass: HomeAssistant) -> None:
     """Test temperature to celsius rounding to tenths."""
     assert display_temp(hass, TEMP, TEMP_CELSIUS, PRECISION_TENTHS) == 24.6
 
 
-def test_fahrenheit_wholes(hass):
+def test_fahrenheit_wholes(hass: HomeAssistant) -> None:
     """Test temperature to fahrenheit rounding to wholes."""
     assert display_temp(hass, TEMP, TEMP_FAHRENHEIT, PRECISION_WHOLE) == -4
diff --git a/tests/helpers/test_translation.py b/tests/helpers/test_translation.py
index 1576637745f..463f55204b0 100644
--- a/tests/helpers/test_translation.py
+++ b/tests/helpers/test_translation.py
@@ -6,6 +6,7 @@ from unittest.mock import Mock, patch
 
 import pytest
 
+from homeassistant.core import HomeAssistant
 from homeassistant.generated import config_flows
 from homeassistant.helpers import translation
 from homeassistant.loader import async_get_integration
@@ -75,7 +76,7 @@ async def test_component_translation_path(hass, enable_custom_integrations):
     )
 
 
-def test_load_translations_files(hass):
+def test_load_translations_files(hass: HomeAssistant) -> None:
     """Test the load translation files function."""
     # Test one valid and one invalid file
     file1 = hass.config.path(
diff --git a/tests/test_config.py b/tests/test_config.py
index 01514931de6..a39c3f9602d 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -339,7 +339,7 @@ def test_remove_lib_on_upgrade_94(mock_docker, mock_os, mock_shutil, hass):
         assert mock_shutil.rmtree.call_args == mock.call(hass_path)
 
 
-def test_process_config_upgrade(hass):
+def test_process_config_upgrade(hass: HomeAssistant) -> None:
     """Test update of version on upgrade."""
     ha_version = "0.92.0"
 
@@ -357,7 +357,7 @@ def test_process_config_upgrade(hass):
         assert opened_file.write.call_args == mock.call("0.91.0")
 
 
-def test_config_upgrade_same_version(hass):
+def test_config_upgrade_same_version(hass: HomeAssistant) -> None:
     """Test no update of version on no upgrade."""
     ha_version = __version__
 
@@ -372,7 +372,7 @@ def test_config_upgrade_same_version(hass):
         assert opened_file.write.call_count == 0
 
 
-def test_config_upgrade_no_file(hass):
+def test_config_upgrade_no_file(hass: HomeAssistant) -> None:
     """Test update of version on upgrade, with no version file."""
     mock_open = mock.mock_open()
     mock_open.side_effect = [FileNotFoundError(), mock.DEFAULT, mock.DEFAULT]
diff --git a/tests/test_loader.py b/tests/test_loader.py
index 2e853c33960..1c39ae1e080 100644
--- a/tests/test_loader.py
+++ b/tests/test_loader.py
@@ -3,9 +3,10 @@ from unittest.mock import patch
 
 import pytest
 
-from homeassistant import core, loader
+from homeassistant import loader
 from homeassistant.components import http, hue
 from homeassistant.components.hue import light as hue_light
+from homeassistant.core import HomeAssistant, callback
 
 from .common import MockModule, mock_integration
 
@@ -41,14 +42,14 @@ async def test_component_dependencies(hass):
         await loader._async_component_dependencies(hass, "mod_3", mod_3, set(), set())
 
 
-def test_component_loader(hass):
+def test_component_loader(hass: HomeAssistant) -> None:
     """Test loading components."""
     components = loader.Components(hass)
     assert components.http.CONFIG_SCHEMA is http.CONFIG_SCHEMA
     assert hass.components.http.CONFIG_SCHEMA is http.CONFIG_SCHEMA
 
 
-def test_component_loader_non_existing(hass):
+def test_component_loader_non_existing(hass: HomeAssistant) -> None:
     """Test loading components."""
     components = loader.Components(hass)
     with pytest.raises(ImportError):
@@ -69,7 +70,7 @@ async def test_helpers_wrapper(hass):
 
     result = []
 
-    @core.callback
+    @callback
     def discovery_callback(service, discovered):
         """Handle discovery callback."""
         result.append(discovered)
@@ -174,7 +175,7 @@ async def test_get_integration_custom_component(hass, enable_custom_integrations
     assert integration.name == "Test Package"
 
 
-def test_integration_properties(hass):
+def test_integration_properties(hass: HomeAssistant) -> None:
     """Test integration properties."""
     integration = loader.Integration(
         hass,