Add config flow for min_max sensor (#67807)

Co-authored-by: Paulus Schoutsen <balloob@gmail.com>
Co-authored-by: Franck Nijhof <git@frenck.dev>

tests/components/min_max/test_init.py

@@ -0,0 +1,55 @@
+"""Test the Min/Max integration."""
+import pytest
+
+from homeassistant.components.min_max.const import DOMAIN
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import entity_registry as er
+
+from tests.common import MockConfigEntry
+
+
+@pytest.mark.parametrize("platform", ("sensor",))
+async def test_setup_and_remove_config_entry(
+    hass: HomeAssistant,
+    platform: str,
+) -> None:
+    """Test setting up and removing a config entry."""
+    hass.states.async_set("sensor.input_one", "10")
+    hass.states.async_set("sensor.input_two", "20")
+
+    input_sensors = ["sensor.input_one", "sensor.input_two"]
+
+    registry = er.async_get(hass)
+    min_max_entity_id = f"{platform}.my_min_max"
+
+    # Setup the config entry
+    config_entry = MockConfigEntry(
+        data={},
+        domain=DOMAIN,
+        options={
+            "entity_ids": input_sensors,
+            "name": "My min_max",
+            "round_digits": 2.0,
+            "type": "max",
+        },
+        title="My min_max",
+    )
+    config_entry.add_to_hass(hass)
+    assert await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    # Check the entity is registered in the entity registry
+    assert registry.async_get(min_max_entity_id) is not None
+
+    # Check the platform is setup correctly
+    state = hass.states.get(min_max_entity_id)
+    assert state.state == "20.0"
+    assert state.attributes["count_sensors"] == 2
+
+    # Remove the config entry
+    assert await hass.config_entries.async_remove(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    # Check the state and entity registry entry are removed
+    assert hass.states.get(min_max_entity_id) is None
+    assert registry.async_get(min_max_entity_id) is None