Log error for servicecall without required data

* Log error for services called without required attributes, in
	media_player, notify and thermostat platforms.
* Add fan property and methods in thermostat demo component.
* Add tests for notify file and thermostat demo component.
* Increase coverage of tests for media_player, notify and thermostat
	platforms.
* Fix some PEP issues, but not all. Tests still have old linting
	errors.

tests/components/notify/test_command_line.py

@@ -3,8 +3,10 @@ import os
 import tempfile
 import unittest
 
-from homeassistant import core
 import homeassistant.components.notify as notify
+
+from tests.common import get_test_home_assistant
+
 from unittest.mock import patch
 
 
@@ -13,12 +15,27 @@ class TestCommandLine(unittest.TestCase):
 
     def setUp(self):  # pylint: disable=invalid-name
         """Setup things to be run when tests are started."""
-        self.hass = core.HomeAssistant()
+        self.hass = get_test_home_assistant()
 
     def tearDown(self):  # pylint: disable=invalid-name
         """Stop down everything that was started."""
         self.hass.stop()
 
+    def test_bad_config(self):
+        """Test set up the platform with bad/missing config."""
+        self.assertFalse(notify.setup(self.hass, {
+            'notify': {
+                'name': 'test',
+                'platform': 'bad_platform',
+            }
+        }))
+        self.assertFalse(notify.setup(self.hass, {
+            'notify': {
+                'name': 'test',
+                'platform': 'command_line',
+            }
+        }))
+
     def test_command_line_output(self):
         """Test the command line output."""
         with tempfile.TemporaryDirectory() as tempdirname:
@@ -41,7 +58,7 @@ class TestCommandLine(unittest.TestCase):
 
     @patch('homeassistant.components.notify.command_line._LOGGER.error')
     def test_error_for_none_zero_exit_code(self, mock_error):
-        """Test if an error if logged for non zero exit codes."""
+        """Test if an error is logged for non zero exit codes."""
         self.assertTrue(notify.setup(self.hass, {
             'notify': {
                 'name': 'test',