From edaf5c81673da80a73bd718d38ce2e0b86c09474 Mon Sep 17 00:00:00 2001
From: Jordan Harvey <jordan@hrvy.uk>
Date: Thu, 30 Oct 2025 12:42:51 +0000
Subject: [PATCH] Add serial number for Nintendo Switch devices (#155500)

---
 .../components/nintendo_parental_controls/entity.py          | 1 +
 tests/components/nintendo_parental_controls/conftest.py      | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/homeassistant/components/nintendo_parental_controls/entity.py b/homeassistant/components/nintendo_parental_controls/entity.py
index 339d2adbc23..b7e586d7999 100644
--- a/homeassistant/components/nintendo_parental_controls/entity.py
+++ b/homeassistant/components/nintendo_parental_controls/entity.py
@@ -30,6 +30,7 @@ class NintendoDevice(CoordinatorEntity[NintendoUpdateCoordinator]):
             sw_version=device.extra["firmwareVersion"]["displayedVersion"],
             model=device.model,
             model_id=device.generation,
+            serial_number=device.extra["serialNumber"],
         )
 
     async def async_added_to_hass(self) -> None:
diff --git a/tests/components/nintendo_parental_controls/conftest.py b/tests/components/nintendo_parental_controls/conftest.py
index 597b91669d7..eca9c1690c8 100644
--- a/tests/components/nintendo_parental_controls/conftest.py
+++ b/tests/components/nintendo_parental_controls/conftest.py
@@ -32,7 +32,10 @@ def mock_nintendo_device() -> Device:
     mock = AsyncMock(spec=Device)
     mock.device_id = "testdevid"
     mock.name = "Home Assistant Test"
-    mock.extra = {"firmwareVersion": {"displayedVersion": "99.99.99"}}
+    mock.extra = {
+        "firmwareVersion": {"displayedVersion": "99.99.99"},
+        "serialNumber": "SN12345678",
+    }
     mock.limit_time = 120
     mock.today_playing_time = 110
     mock.today_time_remaining = 10