From 3e44d15fc18d56a58f5b1e529191abb71ab52d4b Mon Sep 17 00:00:00 2001
From: mettolen <1007649+mettolen@users.noreply.github.com>
Date: Sun, 8 Feb 2026 23:52:56 +0200
Subject: [PATCH] Add diagnostics to Liebherr integration (#162360)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
---
 .../components/liebherr/diagnostics.py        | 34 ++++++++++++++
 .../components/liebherr/quality_scale.yaml    |  2 +-
 .../liebherr/snapshots/test_diagnostics.ambr  | 47 +++++++++++++++++++
 tests/components/liebherr/test_diagnostics.py | 25 ++++++++++
 4 files changed, 107 insertions(+), 1 deletion(-)
 create mode 100644 homeassistant/components/liebherr/diagnostics.py
 create mode 100644 tests/components/liebherr/snapshots/test_diagnostics.ambr
 create mode 100644 tests/components/liebherr/test_diagnostics.py

diff --git a/homeassistant/components/liebherr/diagnostics.py b/homeassistant/components/liebherr/diagnostics.py
new file mode 100644
index 00000000000..21e6ab7af4c
--- /dev/null
+++ b/homeassistant/components/liebherr/diagnostics.py
@@ -0,0 +1,34 @@
+"""Diagnostics support for Liebherr."""
+
+from __future__ import annotations
+
+from dataclasses import asdict
+from typing import Any
+
+from homeassistant.const import CONF_API_KEY
+from homeassistant.core import HomeAssistant
+
+from .coordinator import LiebherrConfigEntry
+
+TO_REDACT = {CONF_API_KEY}
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: LiebherrConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    return {
+        "devices": {
+            device_id: {
+                "coordinator": {
+                    "last_update_success": coordinator.last_update_success,
+                    "update_interval": str(coordinator.update_interval),
+                    "last_exception": str(coordinator.last_exception)
+                    if coordinator.last_exception
+                    else None,
+                },
+                "data": asdict(coordinator.data),
+            }
+            for device_id, coordinator in entry.runtime_data.items()
+        },
+    }
diff --git a/homeassistant/components/liebherr/quality_scale.yaml b/homeassistant/components/liebherr/quality_scale.yaml
index 24a4d938f6f..25b6bd26116 100644
--- a/homeassistant/components/liebherr/quality_scale.yaml
+++ b/homeassistant/components/liebherr/quality_scale.yaml
@@ -41,7 +41,7 @@ rules:
 
   # Gold
   devices: done
-  diagnostics: todo
+  diagnostics: done
   discovery-update-info:
     status: exempt
     comment: Cloud API does not require updating entry data from network discovery.
diff --git a/tests/components/liebherr/snapshots/test_diagnostics.ambr b/tests/components/liebherr/snapshots/test_diagnostics.ambr
new file mode 100644
index 00000000000..54db49bd365
--- /dev/null
+++ b/tests/components/liebherr/snapshots/test_diagnostics.ambr
@@ -0,0 +1,47 @@
+# serializer version: 1
+# name: test_diagnostics
+  dict({
+    'devices': dict({
+      'test_device_id': dict({
+        'coordinator': dict({
+          'last_exception': None,
+          'last_update_success': True,
+          'update_interval': '0:01:00',
+        }),
+        'data': dict({
+          'controls': list([
+            dict({
+              'max': 8,
+              'min': 2,
+              'name': 'Fridge',
+              'target': 4,
+              'type': 'fridge',
+              'unit': '°C',
+              'value': 5,
+              'zone_id': 1,
+              'zone_position': 'top',
+            }),
+            dict({
+              'max': -16,
+              'min': -24,
+              'name': 'Freezer',
+              'target': -18,
+              'type': 'freezer',
+              'unit': '°C',
+              'value': -18,
+              'zone_id': 2,
+              'zone_position': 'bottom',
+            }),
+          ]),
+          'device': dict({
+            'device_id': 'test_device_id',
+            'device_name': 'CBNes1234',
+            'device_type': 'COMBI',
+            'image_url': None,
+            'nickname': 'Test Fridge',
+          }),
+        }),
+      }),
+    }),
+  })
+# ---
diff --git a/tests/components/liebherr/test_diagnostics.py b/tests/components/liebherr/test_diagnostics.py
new file mode 100644
index 00000000000..2f4a4b568b1
--- /dev/null
+++ b/tests/components/liebherr/test_diagnostics.py
@@ -0,0 +1,25 @@
+"""Tests for the diagnostics data provided by the Liebherr integration."""
+
+from unittest.mock import MagicMock
+
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+from tests.components.diagnostics import get_diagnostics_for_config_entry
+from tests.typing import ClientSessionGenerator
+
+
+async def test_diagnostics(
+    hass: HomeAssistant,
+    hass_client: ClientSessionGenerator,
+    mock_liebherr_client: MagicMock,
+    init_integration: MockConfigEntry,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test diagnostics."""
+    assert (
+        await get_diagnostics_for_config_entry(hass, hass_client, init_integration)
+        == snapshot
+    )