diff --git a/tests/components/shelly/__init__.py b/tests/components/shelly/__init__.py
index 8ded53a6f583..4b79fe9b79db 100644
--- a/tests/components/shelly/__init__.py
+++ b/tests/components/shelly/__init__.py
@@ -67,7 +67,7 @@ async def init_integration(
 
     if not skip_setup:
         await hass.config_entries.async_setup(entry.entry_id)
-        await hass.async_block_till_done()
+        await hass.async_block_till_done(wait_background_tasks=True)
 
     return entry
 
diff --git a/tests/components/shelly/test_binary_sensor.py b/tests/components/shelly/test_binary_sensor.py
index 695e0a11eb23..1b02f3f8d631 100644
--- a/tests/components/shelly/test_binary_sensor.py
+++ b/tests/components/shelly/test_binary_sensor.py
@@ -1,7 +1,7 @@
 """Tests for Shelly binary sensor platform."""
 
 from copy import deepcopy
-from unittest.mock import Mock
+from unittest.mock import Mock, patch
 
 from aioshelly.const import (
     MODEL_BLU_GATEWAY_G3,
@@ -10,6 +10,7 @@ from aioshelly.const import (
     MODEL_MOTION,
     MODEL_PLUS_SMOKE,
 )
+from aioshelly.exceptions import DeviceConnectionError
 from freezegun.api import FrozenDateTimeFactory
 import pytest
 from syrupy.assertion import SnapshotAssertion
@@ -335,7 +336,8 @@ async def test_rpc_sleeping_binary_sensor(
     entity_id = f"{BINARY_SENSOR_DOMAIN}.test_name_cloud"
     monkeypatch.setattr(mock_rpc_device, "connected", False)
     monkeypatch.setitem(mock_rpc_device.status["sys"], "wakeup_period", 1000)
-    config_entry = await init_integration(hass, 2, sleep_period=1000)
+    with patch.object(mock_rpc_device, "initialize", side_effect=DeviceConnectionError):
+        config_entry = await init_integration(hass, 2, sleep_period=1000)
 
     # Sensor should be created when device is online
     assert hass.states.get(entity_id) is None
@@ -376,7 +378,8 @@ async def test_rpc_sleeping_binary_sensor_with_channel_name(
     entity_id = f"{BINARY_SENSOR_DOMAIN}.test_name_test_channel_name_smoke"
     monkeypatch.setattr(mock_rpc_device, "connected", False)
     monkeypatch.setitem(mock_rpc_device.status["sys"], "wakeup_period", 1000)
-    await init_integration(hass, 2, sleep_period=1000, model=MODEL_PLUS_SMOKE)
+    with patch.object(mock_rpc_device, "initialize", side_effect=DeviceConnectionError):
+        await init_integration(hass, 2, sleep_period=1000, model=MODEL_PLUS_SMOKE)
 
     # Sensor should be created when device is online
     assert hass.states.get(entity_id) is None
diff --git a/tests/components/shelly/test_button.py b/tests/components/shelly/test_button.py
index a32ab642df08..5f40221488bd 100644
--- a/tests/components/shelly/test_button.py
+++ b/tests/components/shelly/test_button.py
@@ -1,7 +1,7 @@
 """Tests for Shelly button platform."""
 
 from copy import deepcopy
-from unittest.mock import Mock
+from unittest.mock import Mock, patch
 
 from aioshelly.const import MODEL_BLU_GATEWAY_G3, MODEL_PLUS_SMOKE, MODEL_WALL_DISPLAY
 from aioshelly.exceptions import DeviceConnectionError, InvalidAuthError, RpcCallError
@@ -494,7 +494,8 @@ async def test_rpc_smoke_mute_alarm_button(
     monkeypatch.setitem(mock_rpc_device.status["sys"], "wakeup_period", 1000)
     monkeypatch.setattr(mock_rpc_device, "config", {"smoke:0": {"id": 0, "name": None}})
     monkeypatch.setattr(mock_rpc_device, "connected", False)
-    await init_integration(hass, 2, sleep_period=1000, model=MODEL_PLUS_SMOKE)
+    with patch.object(mock_rpc_device, "initialize", side_effect=DeviceConnectionError):
+        await init_integration(hass, 2, sleep_period=1000, model=MODEL_PLUS_SMOKE)
 
     # Sensor should be created when device is online
     assert hass.states.get(entity_id) is None
diff --git a/tests/components/shelly/test_update.py b/tests/components/shelly/test_update.py
index 8007ecc36153..5890bd06aecb 100644
--- a/tests/components/shelly/test_update.py
+++ b/tests/components/shelly/test_update.py
@@ -1,6 +1,6 @@
 """Tests for Shelly update platform."""
 
-from unittest.mock import AsyncMock, Mock
+from unittest.mock import AsyncMock, Mock, patch
 
 from aioshelly.exceptions import DeviceConnectionError, InvalidAuthError, RpcCallError
 from freezegun.api import FrozenDateTimeFactory
@@ -420,7 +420,8 @@ async def test_rpc_sleeping_update(
         },
     )
     entity_id = f"{UPDATE_DOMAIN}.test_name_firmware"
-    await init_integration(hass, 2, sleep_period=1000)
+    with patch.object(mock_rpc_device, "initialize", side_effect=DeviceConnectionError):
+        await init_integration(hass, 2, sleep_period=1000)
 
     # Entity should be created when device is online
     assert hass.states.get(entity_id) is None