Use setup_test_component_platform helper for select entity component tests instead of hass.components (#114412)

* Use `setup_test_component_platform` helper for select entity component tests instead of `hass.components`

* Use _values instead of _attr_current_option

* Clean up

* Set default current_option for second mock entity

---------

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

tests/testing_config/custom_components/test/select.py

@@ -1,63 +0,0 @@
-"""Provide a mock select platform.
-
-Call init before using it in your tests to ensure clean test data.
-"""
-
-from homeassistant.components.select import SelectEntity
-
-from tests.common import MockEntity
-
-UNIQUE_SELECT_1 = "unique_select_1"
-UNIQUE_SELECT_2 = "unique_select_2"
-
-ENTITIES = []
-
-
-class MockSelectEntity(MockEntity, SelectEntity):
-    """Mock Select class."""
-
-    _attr_current_option = None
-
-    @property
-    def current_option(self):
-        """Return the current option of this select."""
-        return self._handle("current_option")
-
-    @property
-    def options(self) -> list:
-        """Return the list of available options of this select."""
-        return self._handle("options")
-
-    def select_option(self, option: str) -> None:
-        """Change the selected option."""
-        self._attr_current_option = option
-
-
-def init(empty=False):
-    """Initialize the platform with entities."""
-    global ENTITIES
-
-    ENTITIES = (
-        []
-        if empty
-        else [
-            MockSelectEntity(
-                name="select 1",
-                unique_id="unique_select_1",
-                options=["option 1", "option 2", "option 3"],
-                current_option="option 1",
-            ),
-            MockSelectEntity(
-                name="select 2",
-                unique_id="unique_select_2",
-                options=["option 1", "option 2", "option 3"],
-            ),
-        ]
-    )
-
-
-async def async_setup_platform(
-    hass, config, async_add_entities_callback, discovery_info=None
-):
-    """Return mock entities."""
-    async_add_entities_callback(ENTITIES)