diff --git a/tests/components/shelly/__init__.py b/tests/components/shelly/__init__.py
index 7a20560e25f..5cba8e5e3b8 100644
--- a/tests/components/shelly/__init__.py
+++ b/tests/components/shelly/__init__.py
@@ -40,13 +40,15 @@ async def init_integration(
     sleep_period=0,
     options: dict[str, Any] | None = None,
     skip_setup: bool = False,
+    data: dict[str, Any] | None = None,
 ) -> MockConfigEntry:
     """Set up the Shelly integration in Home Assistant."""
-    data = {
-        CONF_HOST: "192.168.1.37",
-        CONF_SLEEP_PERIOD: sleep_period,
-        "model": model,
-    }
+    if data is None:
+        data = {
+            CONF_HOST: "192.168.1.37",
+            CONF_SLEEP_PERIOD: sleep_period,
+            "model": model,
+        }
     if gen is not None:
         data[CONF_GEN] = gen
 
diff --git a/tests/components/shelly/test_device_trigger.py b/tests/components/shelly/test_device_trigger.py
index fb68393304b..89045208d20 100644
--- a/tests/components/shelly/test_device_trigger.py
+++ b/tests/components/shelly/test_device_trigger.py
@@ -25,7 +25,7 @@ from homeassistant.setup import async_setup_component
 
 from . import init_integration
 
-from tests.common import MockConfigEntry, async_get_device_automations
+from tests.common import async_get_device_automations
 
 
 @pytest.mark.parametrize(
@@ -162,8 +162,7 @@ async def test_get_triggers_for_invalid_device_id(
 ) -> None:
     """Test error raised for invalid shelly device_id."""
     await init_integration(hass, 1)
-    config_entry = MockConfigEntry(domain=DOMAIN, data={})
-    config_entry.add_to_hass(hass)
+    config_entry = await init_integration(hass, 1, data={}, skip_setup=True)
     invalid_device = device_registry.async_get_or_create(
         config_entry_id=config_entry.entry_id,
         connections={(dr.CONNECTION_NETWORK_MAC, "12:34:56:AB:CD:EF")},
diff --git a/tests/components/shelly/test_init.py b/tests/components/shelly/test_init.py
index f3ce807b655..036da1bfd64 100644
--- a/tests/components/shelly/test_init.py
+++ b/tests/components/shelly/test_init.py
@@ -27,16 +27,10 @@ from homeassistant.config_entries import SOURCE_REAUTH, ConfigEntryState
 from homeassistant.const import CONF_HOST, CONF_PORT, STATE_ON, STATE_UNAVAILABLE
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import issue_registry as ir
-from homeassistant.helpers.device_registry import (
-    CONNECTION_NETWORK_MAC,
-    DeviceRegistry,
-    format_mac,
-)
+from homeassistant.helpers.device_registry import DeviceRegistry
 from homeassistant.setup import async_setup_component
 
-from . import MOCK_MAC, init_integration, mutate_rpc_device_status
-
-from tests.common import MockConfigEntry
+from . import init_integration, mutate_rpc_device_status
 
 
 async def test_custom_coap_port(
@@ -121,12 +115,6 @@ async def test_shared_device_mac(
     caplog: pytest.LogCaptureFixture,
 ) -> None:
     """Test first time shared device with another domain."""
-    config_entry = MockConfigEntry(domain="test", data={}, unique_id="some_id")
-    config_entry.add_to_hass(hass)
-    device_registry.async_get_or_create(
-        config_entry_id=config_entry.entry_id,
-        connections={(CONNECTION_NETWORK_MAC, format_mac(MOCK_MAC))},
-    )
     await init_integration(hass, gen, sleep_period=1000)
     assert "will resume when device is online" in caplog.text
 
@@ -135,12 +123,7 @@ async def test_setup_entry_not_shelly(
     hass: HomeAssistant, caplog: pytest.LogCaptureFixture
 ) -> None:
     """Test not Shelly entry."""
-    entry = MockConfigEntry(domain=DOMAIN, data={}, unique_id=DOMAIN)
-    entry.add_to_hass(hass)
-
-    assert await hass.config_entries.async_setup(entry.entry_id) is False
-    await hass.async_block_till_done()
-
+    await init_integration(hass, 1, data={})
     assert "probably comes from a custom integration" in caplog.text
 
 
@@ -247,12 +230,7 @@ async def test_sleeping_block_device_online(
     caplog: pytest.LogCaptureFixture,
 ) -> None:
     """Test sleeping block device online."""
-    config_entry = MockConfigEntry(domain=DOMAIN, data={}, unique_id="shelly")
-    config_entry.add_to_hass(hass)
-    device_registry.async_get_or_create(
-        config_entry_id=config_entry.entry_id,
-        connections={(CONNECTION_NETWORK_MAC, format_mac(MOCK_MAC))},
-    )
+    await init_integration(hass, 1, data={})
 
     monkeypatch.setitem(
         mock_block_device.settings,
@@ -498,8 +476,7 @@ async def test_entry_missing_port(hass: HomeAssistant) -> None:
         "model": MODEL_PLUS_2PM,
         CONF_GEN: 2,
     }
-    entry = MockConfigEntry(domain=DOMAIN, data=data, unique_id=MOCK_MAC)
-    entry.add_to_hass(hass)
+    entry = await init_integration(hass, 2, data=data, skip_setup=True)
     with (
         patch("homeassistant.components.shelly.RpcDevice.initialize"),
         patch(
@@ -523,8 +500,7 @@ async def test_rpc_entry_custom_port(hass: HomeAssistant) -> None:
         CONF_GEN: 2,
         CONF_PORT: 8001,
     }
-    entry = MockConfigEntry(domain=DOMAIN, data=data, unique_id=MOCK_MAC)
-    entry.add_to_hass(hass)
+    entry = await init_integration(hass, 2, data=data, skip_setup=True)
     with (
         patch("homeassistant.components.shelly.RpcDevice.initialize"),
         patch(