wrapped up unit testing

homeassistant/components/light/template.py

@@ -101,7 +101,7 @@ class LightTemplate(Light):
         self._level_template = level_template
         
         self._state = False
-        self._brightness = 0
+        self._brightness = None
         self._entities = entity_ids
 
         if self._template is not None:
@@ -112,8 +112,6 @@ class LightTemplate(Light):
     @property
     def brightness(self):
         """Return the brightness of the light."""
-        if self._level_template is None:
-            return None
         return self._brightness
 
     @property
@@ -133,20 +131,17 @@ class LightTemplate(Light):
     def async_added_to_hass(self):
         """Register callbacks."""
         state = yield from async_get_last_state(self.hass, self.entity_id)
-        _LOGGER.error("Previous state thawed " + str(state))
         if state:
             self._state = state.state == STATE_ON
 
         @callback
         def template_light_state_listener(entity, old_state, new_state):
             """Handle target device state changes."""
-            _LOGGER.error("state listener callback")
             self.hass.async_add_job(self.async_update_ha_state(True))
 
         @callback
         def template_light_startup(event):
             """Update template on startup."""
-            _LOGGER.error("startup callback")
             async_track_state_change(
                 self.hass, self._entities, template_light_state_listener)
 
@@ -158,17 +153,14 @@ class LightTemplate(Light):
     @asyncio.coroutine
     def async_turn_on(self, **kwargs):
         """Turn the light on."""
-        _LOGGER.error(str(kwargs))
+        self._state = True
-        _LOGGER.error(str(self._level_script))
         if ATTR_BRIGHTNESS in kwargs and self._level_script:
+            self._brightness = kwargs[ATTR_BRIGHTNESS]
             self.hass.async_add_job(self._level_script.async_run(
                 {"brightness": kwargs[ATTR_BRIGHTNESS]}))
-            self._brightness = kwargs[ATTR_BRIGHTNESS]
         else:
             self.hass.async_add_job(self._on_script.async_run())
 
-        self._state = True
-
     @asyncio.coroutine
     def async_turn_off(self, **kwargs):
         """Turn the light off."""
@@ -192,7 +184,8 @@ class LightTemplate(Light):
                     self._state = None
 
             if self._level_template is not None:
-                self._brightness = self._level_template.async_render()
+                brightness = self._level_template.async_render()
+                self._brightness = brightness
 
         except TemplateError as ex:
             _LOGGER.error(ex)

tests/components/light/test_template.py

@@ -427,12 +427,13 @@ class TestTemplateLight:
         assert len(self.calls) == 1
 
     def test_level_action_no_template(self):
-        """Test setting brightness"""
+        """Test setting brightness with optimistic template."""
         assert setup.setup_component(self.hass, 'light', {
             'light': {
                 'platform': 'template',
                 'lights': {
                     'test_template_light': {
+                        'value_template': '{{1 == 1}}',
                         'turn_on': {
                             'service': 'light.turn_on',
                             'entity_id': 'light.test_state'
@@ -444,11 +445,10 @@ class TestTemplateLight:
                         'set_level': {
                             'service': 'test.automation',
                             'data_template': {
-                                'entity_id': 'light.test_state',
+                                'entity_id': 'test.test_state',
                                 'brightness': '{{brightness}}'
                             }
                         },
-                        'level_template': '{{states.light.test_state.attributes.brightness}}'
                     }
                 }
             }
@@ -462,23 +462,24 @@ class TestTemplateLight:
         core.light.turn_on(
             self.hass, 'light.test_template_light', **{ATTR_BRIGHTNESS: 124})
         self.hass.block_till_done()
-        state = self.hass.states.get('light.test_template_light')
-        
         assert len(self.calls) == 1
+        state = self.hass.states.get('light.test_template_light')
         assert self.calls[0].data['brightness'] == '124'
 
         # need to add assertions about optimistic state
-        # assert state.attributes.get('brightness') == 124
+        state = self.hass.states.get('light.test_template_light')
+        assert state != None
+        assert state.attributes.get('brightness') == 124
 
     def test_level_template(self):
-        """Test the setting of the state with off."""
+        """Test the template for the level."""
         with assert_setup_component(1):
             assert setup.setup_component(self.hass, 'light', {
                 'light': {
                     'platform': 'template',
                     'lights': {
                         'test_template_light': {
-                            'value_template': "{{ 1 == 2 }}",
+                            'value_template': "{{ 1 == 1 }}",
                             'turn_on': {
                                 'service': 'light.turn_on',
                                 'entity_id': 'light.test_state'
@@ -506,8 +507,8 @@ class TestTemplateLight:
 
         state = self.hass.states.get('light.test_template_light')
         assert state != None
-        _LOGGER.error(str(state))
+
-        assert state.attributes.get('brightness') == 42
+        assert state.attributes.get('brightness') == '42'
 
 @asyncio.coroutine
 def test_restore_state(hass):