Fix PEP257 issues

tests/helpers/test_service.py

@@ -1,9 +1,4 @@
-"""
-tests.helpers.test_service
-~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Test service helpers.
-"""
+"""Test service helpers."""
 import unittest
 from unittest.mock import patch
 
@@ -15,21 +10,21 @@ from tests.common import get_test_home_assistant, mock_service
 
 
 class TestServiceHelpers(unittest.TestCase):
-    """ Tests the Home Assistant service helpers. """
+    """Test the Home Assistant service helpers."""
 
     def setUp(self):     # pylint: disable=invalid-name
-        """ things to be run when tests are started. """
+        """Setup things to be run when tests are started."""
         self.hass = get_test_home_assistant()
         self.calls = mock_service(self.hass, 'test_domain', 'test_service')
 
         service.HASS = self.hass
 
     def tearDown(self):  # pylint: disable=invalid-name
-        """ Stop down stuff we started. """
+        """Stop down everything that was started."""
         self.hass.stop()
 
     def test_service(self):
-        """ Test service registration decorator. """
+        """Test service registration decorator."""
         runs = []
 
         decor = service.service('test', 'test')
@@ -40,6 +35,7 @@ class TestServiceHelpers(unittest.TestCase):
         self.assertEqual(1, len(runs))
 
     def test_split_entity_string(self):
+        """Test splitting of entity string."""
         service.call_from_config(self.hass, {
             'service': 'test_domain.test_service',
             'entity_id': 'hello.world, sensor.beer'
@@ -49,6 +45,7 @@ class TestServiceHelpers(unittest.TestCase):
                          self.calls[-1].data.get('entity_id'))
 
     def test_not_mutate_input(self):
+        """Test for immutable input."""
         orig = {
             'service': 'test_domain.test_service',
             'entity_id': 'hello.world, sensor.beer',
@@ -68,6 +65,7 @@ class TestServiceHelpers(unittest.TestCase):
 
     @patch('homeassistant.helpers.service._LOGGER.error')
     def test_fail_silently_if_no_service(self, mock_log):
+        """Test failling if service is missing."""
         service.call_from_config(self.hass, None)
         self.assertEqual(1, mock_log.call_count)
 
@@ -80,7 +78,7 @@ class TestServiceHelpers(unittest.TestCase):
         self.assertEqual(3, mock_log.call_count)
 
     def test_extract_entity_ids(self):
-        """ Test extract_entity_ids method. """
+        """Test extract_entity_ids method."""
         self.hass.states.set('light.Bowl', STATE_ON)
         self.hass.states.set('light.Ceiling', STATE_OFF)
         self.hass.states.set('light.Kitchen', STATE_OFF)