Fix PEP257 issues

tests/helpers/test_entity.py

@@ -1,9 +1,4 @@
-"""
-tests.helpers.test_entity
-~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Tests the entity helper.
-"""
+"""Test the entity helper."""
 # pylint: disable=protected-access,too-many-public-methods
 import unittest
 
@@ -14,29 +9,29 @@ from tests.common import get_test_home_assistant
 
 
 class TestHelpersEntity(unittest.TestCase):
-    """ Tests homeassistant.helpers.entity module. """
+    """Test homeassistant.helpers.entity module."""
 
     def setUp(self):  # pylint: disable=invalid-name
-        """ Init needed objects. """
+        """Init needed objects."""
         self.entity = entity.Entity()
         self.entity.entity_id = 'test.overwrite_hidden_true'
         self.hass = self.entity.hass = get_test_home_assistant()
         self.entity.update_ha_state()
 
     def tearDown(self):  # pylint: disable=invalid-name
-        """ Stop down stuff we started. """
+        """Stop everything that was started."""
         self.hass.stop()
         entity.Entity.overwrite_attribute(self.entity.entity_id,
                                           [ATTR_HIDDEN], [None])
 
     def test_default_hidden_not_in_attributes(self):
-        """ Test that the default hidden property is set to False. """
+        """Test that the default hidden property is set to False."""
         self.assertNotIn(
             ATTR_HIDDEN,
             self.hass.states.get(self.entity.entity_id).attributes)
 
     def test_overwriting_hidden_property_to_true(self):
-        """ Test we can overwrite hidden property to True. """
+        """Test we can overwrite hidden property to True."""
         entity.Entity.overwrite_attribute(self.entity.entity_id,
                                           [ATTR_HIDDEN], [True])
         self.entity.update_ha_state()
@@ -45,6 +40,6 @@ class TestHelpersEntity(unittest.TestCase):
         self.assertTrue(state.attributes.get(ATTR_HIDDEN))
 
     def test_split_entity_id(self):
-        """ Test split_entity_id. """
+        """Test split_entity_id."""
         self.assertEqual(['domain', 'object_id'],
                          entity.split_entity_id('domain.object_id'))