Fix PEP257 issues

tests/components/light/test_mqtt.py

@@ -1,10 +1,6 @@
-"""
-tests.components.light.test_mqtt
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"""The tests for the MQTT light platform.
 
-Tests mqtt light.
-
-config for RGB Version with brightness:
+Configuration for RGB Version with brightness:
 
 light:
   platform: mqtt
@@ -59,7 +55,6 @@ light:
   qos: 0
   payload_on: "on"
   payload_off: "off"
-
 """
 import unittest
 
@@ -70,17 +65,19 @@ from tests.common import (
 
 
 class TestLightMQTT(unittest.TestCase):
-    """ Test the MQTT light. """
+    """Test the MQTT light."""
 
     def setUp(self):  # pylint: disable=invalid-name
+        """Setup things to be run when tests are started."""
         self.hass = get_test_home_assistant()
         self.mock_publish = mock_mqtt_component(self.hass)
 
     def tearDown(self):  # pylint: disable=invalid-name
-        """ Stop down stuff we started. """
+        """Stop everything that was started."""
         self.hass.stop()
 
     def test_fail_setup_if_no_command_topic(self):
+        """Test if command fails with command topic."""
         self.assertTrue(light.setup(self.hass, {
             'light': {
                 'platform': 'mqtt',
@@ -90,6 +87,7 @@ class TestLightMQTT(unittest.TestCase):
         self.assertIsNone(self.hass.states.get('light.test'))
 
     def test_no_color_or_brightness_if_no_topics(self):
+        """Test if there is no color and brightness if no topic."""
         self.assertTrue(light.setup(self.hass, {
             'light': {
                 'platform': 'mqtt',
@@ -113,6 +111,7 @@ class TestLightMQTT(unittest.TestCase):
         self.assertIsNone(state.attributes.get('brightness'))
 
     def test_controlling_state_via_topic(self):
+        """Test the controlling of the state via topic."""
         self.assertTrue(light.setup(self.hass, {
             'light': {
                 'platform': 'mqtt',
@@ -172,6 +171,7 @@ class TestLightMQTT(unittest.TestCase):
                          light_state.attributes.get('rgb_color'))
 
     def test_controlling_scale(self):
+        """Test the controlling scale."""
         self.assertTrue(light.setup(self.hass, {
             'light': {
                 'platform': 'mqtt',
@@ -217,6 +217,7 @@ class TestLightMQTT(unittest.TestCase):
                          light_state.attributes['brightness'])
 
     def test_controlling_state_via_topic_with_templates(self):
+        """Test the setting og the state with a template."""
         self.assertTrue(light.setup(self.hass, {
             'light': {
                 'platform': 'mqtt',
@@ -250,6 +251,7 @@ class TestLightMQTT(unittest.TestCase):
         self.assertEqual([1, 2, 3], state.attributes.get('rgb_color'))
 
     def test_sending_mqtt_commands_and_optimistic(self):
+        """Test the sending of command in optimistic mode."""
         self.assertTrue(light.setup(self.hass, {
             'light': {
                 'platform': 'mqtt',
@@ -307,6 +309,7 @@ class TestLightMQTT(unittest.TestCase):
         self.assertEqual(50, state.attributes['brightness'])
 
     def test_show_brightness_if_only_command_topic(self):
+        """Test the brightness if only a command topic is present."""
         self.assertTrue(light.setup(self.hass, {
             'light': {
                 'platform': 'mqtt',