Fix PEP257 issues

tests/components/test_sun.py

@@ -1,9 +1,4 @@
-"""
-tests.components.test_sun
-~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Tests Sun component.
-"""
+"""The tests for the Sun component."""
 # pylint: disable=too-many-public-methods,protected-access
 import unittest
 from datetime import timedelta
@@ -18,24 +13,25 @@ from tests.common import get_test_home_assistant
 
 
 class TestSun(unittest.TestCase):
-    """ Test the sun module. """
+    """Test the sun module."""
 
     def setUp(self):  # pylint: disable=invalid-name
+        """Setup things to be run when tests are started."""
         self.hass = get_test_home_assistant()
 
     def tearDown(self):  # pylint: disable=invalid-name
-        """ Stop down stuff we started. """
+        """Stop everything that was started."""
         self.hass.stop()
 
     def test_is_on(self):
-        """ Test is_on method. """
+        """Test is_on method."""
         self.hass.states.set(sun.ENTITY_ID, sun.STATE_ABOVE_HORIZON)
         self.assertTrue(sun.is_on(self.hass))
         self.hass.states.set(sun.ENTITY_ID, sun.STATE_BELOW_HORIZON)
         self.assertFalse(sun.is_on(self.hass))
 
     def test_setting_rising(self):
-        """ Test retrieving sun setting and rising. """
+        """Test retrieving sun setting and rising."""
         latitude = 32.87336
         longitude = 117.22743
 
@@ -76,7 +72,7 @@ class TestSun(unittest.TestCase):
         self.assertIsNone(sun.next_setting(self.hass, 'non.existing'))
 
     def test_state_change(self):
-        """ Test if the state changes at next setting/rising. """
+        """Test if the state changes at next setting/rising."""
         self.hass.config.latitude = '32.87336'
         self.hass.config.longitude = '117.22743'
         sun.setup(self.hass, {sun.DOMAIN: {sun.CONF_ELEVATION: 0}})