diff --git a/tests/components/wake_on_lan/conftest.py b/tests/components/wake_on_lan/conftest.py
new file mode 100644
index 00000000000..582698e39d5
--- /dev/null
+++ b/tests/components/wake_on_lan/conftest.py
@@ -0,0 +1,13 @@
+"""Test fixtures for Wake on Lan."""
+from __future__ import annotations
+
+from unittest.mock import AsyncMock, patch
+
+import pytest
+
+
+@pytest.fixture
+def mock_send_magic_packet() -> AsyncMock:
+    """Mock magic packet."""
+    with patch("wakeonlan.send_magic_packet") as mock_send:
+        yield mock_send
diff --git a/tests/components/wake_on_lan/test_init.py b/tests/components/wake_on_lan/test_init.py
index 3ec7a53a436..1cfe2fa7436 100644
--- a/tests/components/wake_on_lan/test_init.py
+++ b/tests/components/wake_on_lan/test_init.py
@@ -1,14 +1,17 @@
 """Tests for Wake On LAN component."""
+from __future__ import annotations
+
 from unittest.mock import patch
 
 import pytest
 import voluptuous as vol
 
 from homeassistant.components.wake_on_lan import DOMAIN, SERVICE_SEND_MAGIC_PACKET
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 
-async def test_send_magic_packet(hass):
+async def test_send_magic_packet(hass: HomeAssistant) -> None:
     """Test of send magic packet service call."""
     with patch("homeassistant.components.wake_on_lan.wakeonlan") as mocked_wakeonlan:
         mac = "aa:bb:cc:dd:ee:ff"
diff --git a/tests/components/wake_on_lan/test_switch.py b/tests/components/wake_on_lan/test_switch.py
index cac287a87a1..b73f5223576 100644
--- a/tests/components/wake_on_lan/test_switch.py
+++ b/tests/components/wake_on_lan/test_switch.py
@@ -1,10 +1,10 @@
 """The tests for the wake on lan switch platform."""
+from __future__ import annotations
+
 import subprocess
-from unittest.mock import patch
+from unittest.mock import AsyncMock, patch
 
-import pytest
-
-import homeassistant.components.switch as switch
+from homeassistant.components import switch
 from homeassistant.const import (
     ATTR_ENTITY_ID,
     SERVICE_TURN_OFF,
@@ -12,19 +12,15 @@ from homeassistant.const import (
     STATE_OFF,
     STATE_ON,
 )
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 from tests.common import async_mock_service
 
 
-@pytest.fixture(autouse=True)
-def mock_send_magic_packet():
-    """Mock magic packet."""
-    with patch("wakeonlan.send_magic_packet") as mock_send:
-        yield mock_send
-
-
-async def test_valid_hostname(hass):
+async def test_valid_hostname(
+    hass: HomeAssistant, mock_send_magic_packet: AsyncMock
+) -> None:
     """Test with valid hostname."""
     assert await async_setup_component(
         hass,
@@ -65,7 +61,9 @@ async def test_valid_hostname(hass):
         assert state.state == STATE_ON
 
 
-async def test_broadcast_config_ip_and_port(hass, mock_send_magic_packet):
+async def test_broadcast_config_ip_and_port(
+    hass: HomeAssistant, mock_send_magic_packet: AsyncMock
+) -> None:
     """Test with broadcast address and broadcast port config."""
     mac = "00-01-02-03-04-05"
     broadcast_address = "255.255.255.255"
@@ -102,7 +100,9 @@ async def test_broadcast_config_ip_and_port(hass, mock_send_magic_packet):
         )
 
 
-async def test_broadcast_config_ip(hass, mock_send_magic_packet):
+async def test_broadcast_config_ip(
+    hass: HomeAssistant, mock_send_magic_packet: AsyncMock
+) -> None:
     """Test with only broadcast address."""
 
     mac = "00-01-02-03-04-05"
@@ -136,7 +136,9 @@ async def test_broadcast_config_ip(hass, mock_send_magic_packet):
         mock_send_magic_packet.assert_called_with(mac, ip_address=broadcast_address)
 
 
-async def test_broadcast_config_port(hass, mock_send_magic_packet):
+async def test_broadcast_config_port(
+    hass: HomeAssistant, mock_send_magic_packet: AsyncMock
+) -> None:
     """Test with only broadcast port config."""
 
     mac = "00-01-02-03-04-05"
@@ -164,7 +166,9 @@ async def test_broadcast_config_port(hass, mock_send_magic_packet):
         mock_send_magic_packet.assert_called_with(mac, port=port)
 
 
-async def test_off_script(hass):
+async def test_off_script(
+    hass: HomeAssistant, mock_send_magic_packet: AsyncMock
+) -> None:
     """Test with turn off script."""
 
     assert await async_setup_component(
@@ -212,7 +216,9 @@ async def test_off_script(hass):
         assert len(calls) == 1
 
 
-async def test_no_hostname_state(hass):
+async def test_no_hostname_state(
+    hass: HomeAssistant, mock_send_magic_packet: AsyncMock
+) -> None:
     """Test that the state updates if we do not pass in a hostname."""
 
     assert await async_setup_component(