From bac370e775264250de57dfcfcdfbb59511defa96 Mon Sep 17 00:00:00 2001
From: Joost Lekkerkerker <joostlek@outlook.com>
Date: Mon, 16 Mar 2026 08:22:46 +0100
Subject: [PATCH] Add diagnostics to Zinvolt (#165623)

---
 .../components/zinvolt/diagnostics.py         | 23 +++++++++++++
 .../components/zinvolt/quality_scale.yaml     |  2 +-
 .../zinvolt/snapshots/test_diagnostics.ambr   | 34 +++++++++++++++++++
 tests/components/zinvolt/test_diagnostics.py  | 30 ++++++++++++++++
 4 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100644 homeassistant/components/zinvolt/diagnostics.py
 create mode 100644 tests/components/zinvolt/snapshots/test_diagnostics.ambr
 create mode 100644 tests/components/zinvolt/test_diagnostics.py

diff --git a/homeassistant/components/zinvolt/diagnostics.py b/homeassistant/components/zinvolt/diagnostics.py
new file mode 100644
index 00000000000..a7e379551c9
--- /dev/null
+++ b/homeassistant/components/zinvolt/diagnostics.py
@@ -0,0 +1,23 @@
+"""Diagnostics support for Zinvolt."""
+
+from __future__ import annotations
+
+from typing import Any
+
+from homeassistant.core import HomeAssistant
+
+from .coordinator import ZinvoltConfigEntry
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ZinvoltConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    return {
+        "coordinators": [
+            {
+                coordinator.battery.identifier: coordinator.data.to_dict(),
+            }
+            for coordinator in entry.runtime_data.values()
+        ],
+    }
diff --git a/homeassistant/components/zinvolt/quality_scale.yaml b/homeassistant/components/zinvolt/quality_scale.yaml
index 413995615f0..9a86dcb68ea 100644
--- a/homeassistant/components/zinvolt/quality_scale.yaml
+++ b/homeassistant/components/zinvolt/quality_scale.yaml
@@ -41,7 +41,7 @@ rules:
 
   # Gold
   devices: done
-  diagnostics: todo
+  diagnostics: done
   discovery-update-info: todo
   discovery: todo
   docs-data-update: todo
diff --git a/tests/components/zinvolt/snapshots/test_diagnostics.ambr b/tests/components/zinvolt/snapshots/test_diagnostics.ambr
new file mode 100644
index 00000000000..0e60e9d7ff6
--- /dev/null
+++ b/tests/components/zinvolt/snapshots/test_diagnostics.ambr
@@ -0,0 +1,34 @@
+# serializer version: 1
+# name: test_entry_diagnostics
+  dict({
+    'coordinators': list([
+      dict({
+        'a125ef17-6bdf-45ad-b106-ce54e95e4634': dict({
+          'current_power': dict({
+            'is_dormant': False,
+            'max_power': 800,
+            'on_grid': True,
+            'online_status': 'ONLINE',
+            'output_current': 4,
+            'photovoltaic_power': 0,
+            'power_socket_output': -19,
+            'state_of_charge': 100.0,
+          }),
+          'global_settings': dict({
+            'battery_lower_threshold': 10,
+            'battery_upper_threshold': 100,
+            'max_output': 800,
+            'max_output_limit': 800,
+            'max_output_unlocked': False,
+            'maximum_charge_power': 800,
+            'standby_time': 60,
+          }),
+          'name': 'ZVG011025120088',
+          'online_status': 'ONLINE',
+          'serial_number': 'ZVG011025120088',
+          'smart_mode': 'CHARGED',
+        }),
+      }),
+    ]),
+  })
+# ---
diff --git a/tests/components/zinvolt/test_diagnostics.py b/tests/components/zinvolt/test_diagnostics.py
new file mode 100644
index 00000000000..e11f900742f
--- /dev/null
+++ b/tests/components/zinvolt/test_diagnostics.py
@@ -0,0 +1,30 @@
+"""Tests for Zinvolt diagnostics."""
+
+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_entry_diagnostics(
+    hass: HomeAssistant,
+    hass_client: ClientSessionGenerator,
+    mock_zinvolt_client: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test config entry diagnostics."""
+    await setup_integration(hass, mock_config_entry)
+
+    result = await get_diagnostics_for_config_entry(
+        hass, hass_client, mock_config_entry
+    )
+
+    assert result == snapshot