Use Platform constant in tests (#145801)

* Use Platform constant in tests

* spelling

* Fix platform

tests/components/binary_sensor/test_init.py

@@ -7,7 +7,7 @@ import pytest
 
 from homeassistant.components import binary_sensor
 from homeassistant.config_entries import ConfigEntry, ConfigFlow
-from homeassistant.const import STATE_OFF, STATE_ON, EntityCategory
+from homeassistant.const import STATE_OFF, STATE_ON, EntityCategory, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 
@@ -62,7 +62,7 @@ async def test_name(hass: HomeAssistant) -> None:
     ) -> bool:
         """Set up test config entry."""
         await hass.config_entries.async_forward_entry_setups(
-            config_entry, [binary_sensor.DOMAIN]
+            config_entry, [Platform.BINARY_SENSOR]
         )
         return True
 
@@ -142,7 +142,7 @@ async def test_entity_category_config_raises_error(
     ) -> bool:
         """Set up test config entry."""
         await hass.config_entries.async_forward_entry_setups(
-            config_entry, [binary_sensor.DOMAIN]
+            config_entry, [Platform.BINARY_SENSOR]
         )
         return True