Add basic tests for temper USB temperature sensor integration (#80220)

* Add basic tests

* Updated requriements_test_all.txt

* Update temperusb version

* Add type hints

Co-authored-by: Christian Knittl-Frank <lcnittl@gmail.com>

* Add type hints

Co-authored-by: Christian Knittl-Frank <lcnittl@gmail.com>

* Correct typo in type hint

* Fix isort

* Fix requirements_test_all.txt

---------

Co-authored-by: Dave T <davet2001@users.noreply.github.com>
Co-authored-by: Christian Knittl-Frank <lcnittl@gmail.com>

requirements_test_all.txt

@@ -1760,6 +1760,9 @@ tellduslive==0.10.11
 # homeassistant.components.lg_soundbar
 temescal==0.5
 
+# homeassistant.components.temper
+temperusb==1.6.0
+
 # homeassistant.components.powerwall
 tesla-powerwall==0.3.19
 

tests/components/temper/__init__.py

@@ -0,0 +1 @@
+"""Tests for the temper integration."""

tests/components/temper/test_sensor.py

@@ -0,0 +1,35 @@
+"""The tests for the temper (USB temperature sensor) component."""
+from datetime import timedelta
+from unittest.mock import Mock, patch
+
+from homeassistant.core import HomeAssistant
+from homeassistant.setup import async_setup_component
+import homeassistant.util.dt as dt_util
+
+from tests.common import async_fire_time_changed
+
+
+async def test_temperature_readback(hass: HomeAssistant) -> None:
+    """Test for reading sensors."""
+    mock_temper_device = Mock()
+    mock_temper_device.get_temperature.return_value = 12.3
+
+    utcnow = dt_util.utcnow()
+
+    with patch(
+        "temperusb.temper.TemperHandler.get_devices",
+        return_value=[mock_temper_device],
+    ):
+        await async_setup_component(
+            hass,
+            "sensor",
+            {"sensor": {"platform": "temper", "name": "mydevicename"}},
+        )
+        await hass.async_block_till_done()
+
+        async_fire_time_changed(hass, utcnow + timedelta(seconds=70))
+        await hass.async_block_till_done()
+
+        temperature = hass.states.get("sensor.mydevicename")
+        assert temperature
+        assert temperature.state == "12.3"