From 7f20173f6d1d7edc5826109d800e0b47d10bf782 Mon Sep 17 00:00:00 2001
From: Erwin Douna <e.douna@gmail.com>
Date: Fri, 21 Jun 2024 15:07:43 +0200
Subject: [PATCH] MelCloud add diagnostics platform (#115962)

---
 .../components/melcloud/diagnostics.py        | 38 ++++++++++++++++++
 .../melcloud/snapshots/test_diagnostics.ambr  | 23 +++++++++++
 tests/components/melcloud/test_diagnostics.py | 39 +++++++++++++++++++
 3 files changed, 100 insertions(+)
 create mode 100644 homeassistant/components/melcloud/diagnostics.py
 create mode 100644 tests/components/melcloud/snapshots/test_diagnostics.ambr
 create mode 100644 tests/components/melcloud/test_diagnostics.py

diff --git a/homeassistant/components/melcloud/diagnostics.py b/homeassistant/components/melcloud/diagnostics.py
new file mode 100644
index 00000000000..8c2ad0818ff
--- /dev/null
+++ b/homeassistant/components/melcloud/diagnostics.py
@@ -0,0 +1,38 @@
+"""Diagnostics support for MelCloud."""
+
+from __future__ import annotations
+
+from typing import Any
+
+from homeassistant.components.diagnostics.util import async_redact_data
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_TOKEN, CONF_USERNAME
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import entity_registry as er
+
+TO_REDACT = {
+    CONF_USERNAME,
+    CONF_TOKEN,
+}
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for the config entry."""
+    ent_reg = er.async_get(hass)
+    entities = [
+        entity.entity_id
+        for entity in er.async_entries_for_config_entry(ent_reg, entry.entry_id)
+    ]
+
+    entity_states = {entity: hass.states.get(entity) for entity in entities}
+
+    entry_dict = entry.as_dict()
+    if "data" in entry_dict:
+        entry_dict["data"] = async_redact_data(entry_dict["data"], TO_REDACT)
+
+    return {
+        "entry": entry_dict,
+        "entities": entity_states,
+    }
diff --git a/tests/components/melcloud/snapshots/test_diagnostics.ambr b/tests/components/melcloud/snapshots/test_diagnostics.ambr
new file mode 100644
index 00000000000..7b0173c240e
--- /dev/null
+++ b/tests/components/melcloud/snapshots/test_diagnostics.ambr
@@ -0,0 +1,23 @@
+# serializer version: 1
+# name: test_get_config_entry_diagnostics
+  dict({
+    'entities': dict({
+    }),
+    'entry': dict({
+      'data': dict({
+      }),
+      'disabled_by': None,
+      'domain': 'melcloud',
+      'entry_id': 'TEST_ENTRY_ID',
+      'minor_version': 1,
+      'options': dict({
+      }),
+      'pref_disable_new_entities': False,
+      'pref_disable_polling': False,
+      'source': 'user',
+      'title': 'melcloud',
+      'unique_id': 'UNIQUE_TEST_ID',
+      'version': 1,
+    }),
+  })
+# ---
diff --git a/tests/components/melcloud/test_diagnostics.py b/tests/components/melcloud/test_diagnostics.py
new file mode 100644
index 00000000000..cbb35eadfd4
--- /dev/null
+++ b/tests/components/melcloud/test_diagnostics.py
@@ -0,0 +1,39 @@
+"""Test the DSMR Reader component diagnostics."""
+
+from unittest.mock import patch
+
+from syrupy import SnapshotAssertion
+
+from homeassistant.components.melcloud.const import DOMAIN
+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_get_config_entry_diagnostics(
+    hass: HomeAssistant,
+    snapshot: SnapshotAssertion,
+    hass_client: ClientSessionGenerator,
+) -> None:
+    """Test if get_config_entry_diagnostics returns the correct data."""
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        title=DOMAIN,
+        options={},
+        entry_id="TEST_ENTRY_ID",
+        unique_id="UNIQUE_TEST_ID",
+    )
+    config_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.melcloud.async_setup_entry", return_value=True
+    ):
+        await hass.config_entries.async_setup(config_entry.entry_id)
+        await hass.async_block_till_done()
+
+    diagnostics = await get_diagnostics_for_config_entry(
+        hass, hass_client, config_entry
+    )
+    assert diagnostics == snapshot