From 3d3aa824b339553fd696663bee989ebcffc97219 Mon Sep 17 00:00:00 2001
From: Jack Boswell <boswelja@outlook.com>
Date: Wed, 28 Sep 2022 19:46:13 +1300
Subject: [PATCH] Refactor Trend to use `async_setup_platform` (#78216)

* Move trend constants to const.py

* Migrate to async_setup_platform

* Fix test

* Reorder attrs
---
 homeassistant/components/trend/__init__.py    |  1 -
 .../components/trend/binary_sensor.py         | 37 ++++++++++---------
 homeassistant/components/trend/const.py       | 14 +++++++
 tests/components/trend/test_binary_sensor.py  |  2 +-
 4 files changed, 34 insertions(+), 20 deletions(-)
 create mode 100644 homeassistant/components/trend/const.py

diff --git a/homeassistant/components/trend/__init__.py b/homeassistant/components/trend/__init__.py
index a56bb00d97b..b583f424da1 100644
--- a/homeassistant/components/trend/__init__.py
+++ b/homeassistant/components/trend/__init__.py
@@ -2,5 +2,4 @@
 
 from homeassistant.const import Platform
 
-DOMAIN = "trend"
 PLATFORMS = [Platform.BINARY_SENSOR]
diff --git a/homeassistant/components/trend/binary_sensor.py b/homeassistant/components/trend/binary_sensor.py
index b98d904cabd..e43032a580f 100644
--- a/homeassistant/components/trend/binary_sensor.py
+++ b/homeassistant/components/trend/binary_sensor.py
@@ -30,26 +30,26 @@ import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import generate_entity_id
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.event import async_track_state_change_event
-from homeassistant.helpers.reload import setup_reload_service
+from homeassistant.helpers.reload import async_setup_reload_service
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.util.dt import utcnow
 
-from . import DOMAIN, PLATFORMS
+from . import PLATFORMS
+from .const import (
+    ATTR_GRADIENT,
+    ATTR_INVERT,
+    ATTR_MIN_GRADIENT,
+    ATTR_SAMPLE_COUNT,
+    ATTR_SAMPLE_DURATION,
+    CONF_INVERT,
+    CONF_MAX_SAMPLES,
+    CONF_MIN_GRADIENT,
+    CONF_SAMPLE_DURATION,
+    DOMAIN,
+)
 
 _LOGGER = logging.getLogger(__name__)
 
-ATTR_ATTRIBUTE = "attribute"
-ATTR_GRADIENT = "gradient"
-ATTR_MIN_GRADIENT = "min_gradient"
-ATTR_INVERT = "invert"
-ATTR_SAMPLE_DURATION = "sample_duration"
-ATTR_SAMPLE_COUNT = "sample_count"
-
-CONF_INVERT = "invert"
-CONF_MAX_SAMPLES = "max_samples"
-CONF_MIN_GRADIENT = "min_gradient"
-CONF_SAMPLE_DURATION = "sample_duration"
-
 SENSOR_SCHEMA = vol.Schema(
     {
         vol.Required(CONF_ENTITY_ID): cv.entity_id,
@@ -68,14 +68,14 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 )
 
 
-def setup_platform(
+async def async_setup_platform(
     hass: HomeAssistant,
     config: ConfigType,
-    add_entities: AddEntitiesCallback,
+    async_add_entities: AddEntitiesCallback,
     discovery_info: DiscoveryInfoType | None = None,
 ) -> None:
     """Set up the trend sensors."""
-    setup_reload_service(hass, DOMAIN, PLATFORMS)
+    await async_setup_reload_service(hass, DOMAIN, PLATFORMS)
 
     sensors = []
 
@@ -106,7 +106,8 @@ def setup_platform(
     if not sensors:
         _LOGGER.error("No sensors added")
         return
-    add_entities(sensors)
+
+    async_add_entities(sensors)
 
 
 class SensorTrend(BinarySensorEntity):
diff --git a/homeassistant/components/trend/const.py b/homeassistant/components/trend/const.py
new file mode 100644
index 00000000000..6787dc08445
--- /dev/null
+++ b/homeassistant/components/trend/const.py
@@ -0,0 +1,14 @@
+"""Constant values for Trend integration."""
+DOMAIN = "trend"
+
+ATTR_ATTRIBUTE = "attribute"
+ATTR_GRADIENT = "gradient"
+ATTR_INVERT = "invert"
+ATTR_MIN_GRADIENT = "min_gradient"
+ATTR_SAMPLE_DURATION = "sample_duration"
+ATTR_SAMPLE_COUNT = "sample_count"
+
+CONF_INVERT = "invert"
+CONF_MAX_SAMPLES = "max_samples"
+CONF_MIN_GRADIENT = "min_gradient"
+CONF_SAMPLE_DURATION = "sample_duration"
diff --git a/tests/components/trend/test_binary_sensor.py b/tests/components/trend/test_binary_sensor.py
index f7ccee97b29..1439ca80e9f 100644
--- a/tests/components/trend/test_binary_sensor.py
+++ b/tests/components/trend/test_binary_sensor.py
@@ -3,7 +3,7 @@ from datetime import timedelta
 from unittest.mock import patch
 
 from homeassistant import config as hass_config, setup
-from homeassistant.components.trend import DOMAIN
+from homeassistant.components.trend.const import DOMAIN
 from homeassistant.const import SERVICE_RELOAD, STATE_UNKNOWN
 import homeassistant.util.dt as dt_util