Async version of melissa (#17721)

* rebase upstream

* Fixed tests

* Fixing lint

tests/components/test_melissa.py

@@ -1,6 +1,5 @@
 """The test for the Melissa Climate component."""
-import unittest
-from tests.common import get_test_home_assistant, MockDependency
+from tests.common import MockDependency, mock_coro_func
 
 from homeassistant.components import melissa
 
@@ -12,25 +11,15 @@ VALID_CONFIG = {
 }
 
 
-class TestMelissa(unittest.TestCase):
-    """Test the Melissa component."""
+async def test_setup(hass):
+    """Test setting up the Melissa component."""
+    with MockDependency('melissa') as mocked_melissa:
+        mocked_melissa.AsyncMelissa().async_connect = mock_coro_func()
+        await melissa.async_setup(hass, VALID_CONFIG)
 
-    def setUp(self):  # pylint: disable=invalid-name
-        """Initialize the values for this test class."""
-        self.hass = get_test_home_assistant()
-        self.config = VALID_CONFIG
-
-    def tearDown(self):  # pylint: disable=invalid-name
-        """Teardown this test class. Stop hass."""
-        self.hass.stop()
-
-    @MockDependency("melissa")
-    def test_setup(self, mocked_melissa):
-        """Test setting up the Melissa component."""
-        melissa.setup(self.hass, self.config)
-
-        mocked_melissa.Melissa.assert_called_with(
+        mocked_melissa.AsyncMelissa.assert_called_with(
             username="********", password="********")
-        assert melissa.DATA_MELISSA in self.hass.data
-        assert isinstance(self.hass.data[melissa.DATA_MELISSA], type(
-                mocked_melissa.Melissa()))
+
+        assert melissa.DATA_MELISSA in hass.data
+        assert isinstance(hass.data[melissa.DATA_MELISSA], type(
+                mocked_melissa.AsyncMelissa()))