Add 100% coverage of Reolink sensor platform (#124472)

* Add 100% sensor test coverage

* use DOMAIN instead of const.DOMAIN

* snake_case

* better split tests

* styling

* Use entity_registry_enabled_by_default fixture

tests/components/reolink/test_sensor.py

@@ -0,0 +1,62 @@
+"""Test the Reolink sensor platform."""
+
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.const import STATE_UNAVAILABLE, Platform
+from homeassistant.core import HomeAssistant
+
+from .conftest import TEST_NVR_NAME
+
+from tests.common import MockConfigEntry
+
+
+@pytest.mark.usefixtures("entity_registry_enabled_by_default")
+async def test_sensors(
+    hass: HomeAssistant,
+    config_entry: MockConfigEntry,
+    reolink_connect: MagicMock,
+) -> None:
+    """Test sensor entities."""
+    reolink_connect.ptz_pan_position.return_value = 1200
+    reolink_connect.wifi_connection = True
+    reolink_connect.wifi_signal = 3
+    reolink_connect.hdd_list = [0]
+    reolink_connect.hdd_storage.return_value = 95
+
+    with patch("homeassistant.components.reolink.PLATFORMS", [Platform.SENSOR]):
+        assert await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+    assert config_entry.state is ConfigEntryState.LOADED
+
+    entity_id = f"{Platform.SENSOR}.{TEST_NVR_NAME}_ptz_pan_position"
+    assert hass.states.get(entity_id).state == "1200"
+
+    entity_id = f"{Platform.SENSOR}.{TEST_NVR_NAME}_wi_fi_signal"
+    assert hass.states.get(entity_id).state == "3"
+
+    entity_id = f"{Platform.SENSOR}.{TEST_NVR_NAME}_sd_0_storage"
+    assert hass.states.get(entity_id).state == "95"
+
+
+@pytest.mark.usefixtures("entity_registry_enabled_by_default")
+async def test_hdd_sensors(
+    hass: HomeAssistant,
+    config_entry: MockConfigEntry,
+    reolink_connect: MagicMock,
+) -> None:
+    """Test hdd sensor entity."""
+    reolink_connect.hdd_list = [0]
+    reolink_connect.hdd_type.return_value = "HDD"
+    reolink_connect.hdd_storage.return_value = 85
+    reolink_connect.hdd_available.return_value = False
+
+    with patch("homeassistant.components.reolink.PLATFORMS", [Platform.SENSOR]):
+        assert await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+    assert config_entry.state is ConfigEntryState.LOADED
+
+    entity_id = f"{Platform.SENSOR}.{TEST_NVR_NAME}_hdd_0_storage"
+    assert hass.states.get(entity_id).state == STATE_UNAVAILABLE