Rewrite random unittest tests to pytest style test functions (#40920)

tests/components/random/test_sensor.py

@@ -1,37 +1,26 @@
 """The test for the random number sensor platform."""
-import unittest
-
-from homeassistant.setup import setup_component
-
-from tests.common import get_test_home_assistant
+from homeassistant.setup import async_setup_component
 
 
-class TestRandomSensor(unittest.TestCase):
+async def test_random_sensor(hass):
     """Test the Random number sensor."""
-
-    def setup_method(self, method):
-        """Set up things to be run when tests are started."""
-        self.hass = get_test_home_assistant()
-
-    def teardown_method(self, method):
-        """Stop everything that was started."""
-        self.hass.stop()
-
-    def test_random_sensor(self):
-        """Test the Random number sensor."""
-        config = {
-            "sensor": {
-                "platform": "random",
-                "name": "test",
-                "minimum": 10,
-                "maximum": 20,
-            }
+    config = {
+        "sensor": {
+            "platform": "random",
+            "name": "test",
+            "minimum": 10,
+            "maximum": 20,
         }
+    }
 
-        assert setup_component(self.hass, "sensor", config)
-        self.hass.block_till_done()
+    assert await async_setup_component(
+        hass,
+        "sensor",
+        config,
+    )
+    await hass.async_block_till_done()
 
-        state = self.hass.states.get("sensor.test")
+    state = hass.states.get("sensor.test")
 
-        assert int(state.state) <= config["sensor"]["maximum"]
-        assert int(state.state) >= config["sensor"]["minimum"]
+    assert int(state.state) <= config["sensor"]["maximum"]
+    assert int(state.state) >= config["sensor"]["minimum"]