From babe19767db77b1df458b8b61a326c83fdefb763 Mon Sep 17 00:00:00 2001
From: Joost Lekkerkerker <joostlek@outlook.com>
Date: Fri, 21 Nov 2025 14:20:47 +0100
Subject: [PATCH] Add diagnostic support to WAQI (#156811)

---
 homeassistant/components/waqi/diagnostics.py  | 20 +++++++++
 .../waqi/snapshots/test_diagnostics.ambr      | 44 +++++++++++++++++++
 tests/components/waqi/test_diagnostics.py     | 28 ++++++++++++
 3 files changed, 92 insertions(+)
 create mode 100644 homeassistant/components/waqi/diagnostics.py
 create mode 100644 tests/components/waqi/snapshots/test_diagnostics.ambr
 create mode 100644 tests/components/waqi/test_diagnostics.py

diff --git a/homeassistant/components/waqi/diagnostics.py b/homeassistant/components/waqi/diagnostics.py
new file mode 100644
index 00000000000..636b8980d0a
--- /dev/null
+++ b/homeassistant/components/waqi/diagnostics.py
@@ -0,0 +1,20 @@
+"""Diagnostics support for WAQI."""
+
+from __future__ import annotations
+
+from dataclasses import asdict
+from typing import Any
+
+from homeassistant.core import HomeAssistant
+
+from .coordinator import WAQIConfigEntry
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: WAQIConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    return {
+        subentry_id: asdict(coordinator.data)
+        for subentry_id, coordinator in entry.runtime_data.items()
+    }
diff --git a/tests/components/waqi/snapshots/test_diagnostics.ambr b/tests/components/waqi/snapshots/test_diagnostics.ambr
new file mode 100644
index 00000000000..aa40b441f7c
--- /dev/null
+++ b/tests/components/waqi/snapshots/test_diagnostics.ambr
@@ -0,0 +1,44 @@
+# serializer version: 1
+# name: test_diagnostics
+  dict({
+    'ABCDEF': dict({
+      'air_quality_index': 29,
+      'attributions': list([
+        dict({
+          'logo': 'Netherland-RIVM.png',
+          'name': 'RIVM - Rijksinstituut voor Volksgezondheid en Milieum, Landelijk Meetnet Luchtkwaliteit',
+          'url': 'http://www.luchtmeetnet.nl/',
+        }),
+        dict({
+          'logo': None,
+          'name': 'World Air Quality Index Project',
+          'url': 'https://waqi.info/',
+        }),
+      ]),
+      'city': dict({
+        'coordinates': dict({
+          'latitude': 52.105031,
+          'longitude': 5.124464,
+        }),
+        'external_url': 'https://aqicn.org/city/netherland/utrecht/de-jongweg',
+        'location': None,
+        'name': 'de Jongweg, Utrecht',
+      }),
+      'dominant_pollutant': 'o3',
+      'extended_air_quality': dict({
+        'carbon_monoxide': 2.3,
+        'humidity': 80,
+        'nephelometry': 80,
+        'nitrogen_dioxide': 2.3,
+        'ozone': 29.4,
+        'pm10': 12,
+        'pm25': 17,
+        'pressure': 1008.8,
+        'sulfur_dioxide': 2.3,
+        'temperature': 16,
+      }),
+      'measured_at': '2023-08-07T17:00:00+02:00',
+      'station_id': 4584,
+    }),
+  })
+# ---
diff --git a/tests/components/waqi/test_diagnostics.py b/tests/components/waqi/test_diagnostics.py
new file mode 100644
index 00000000000..c5b896e9b97
--- /dev/null
+++ b/tests/components/waqi/test_diagnostics.py
@@ -0,0 +1,28 @@
+"""Tests for the diagnostics data provided by the WAQI integration."""
+
+from unittest.mock import AsyncMock
+
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.core import HomeAssistant
+
+from . import setup_integration
+
+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_waqi: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test diagnostics."""
+    await setup_integration(hass, mock_config_entry)
+    assert (
+        await get_diagnostics_for_config_entry(hass, hass_client, mock_config_entry)
+        == snapshot
+    )