* Removed raise statement to don't polute the user log.
Only the error message should be displayed.
Nov 22 11:28:32 tchellopi hass[20138]: 16-11-22 11:28:32 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Nov 22 11:28:32 tchellopi hass[20138]: Traceback (most recent call last):
Nov 22 11:28:32 tchellopi hass[20138]: File "/usr/local/lib/python3.5/asyncio/tasks.py", line 241, in _step
Nov 22 11:28:32 tchellopi hass[20138]: result = coro.throw(exc)
Nov 22 11:28:32 tchellopi hass[20138]: File "/home/hass/.virtualenvs/home_assistant/lib/python3.5/site-packages/homeassistant/helpers/entity_component.py", line 386, in _update_entity_states
Nov 22 11:28:32 tchellopi hass[20138]: yield from update_coro
Nov 22 11:28:32 tchellopi hass[20138]: File "/home/hass/.virtualenvs/home_assistant/lib/python3.5/site-packages/homeassistant/helpers/entity.py", line 213, in async_update_ha_state
Nov 22 11:28:32 tchellopi hass[20138]: yield from self.hass.loop.run_in_executor(None, self.update)
Nov 22 11:28:32 tchellopi hass[20138]: File "/usr/local/lib/python3.5/asyncio/futures.py", line 361, in __iter__
Nov 22 11:28:32 tchellopi hass[20138]: yield self # This tells Task to wait for completion.
Nov 22 11:28:32 tchellopi hass[20138]: File "/usr/local/lib/python3.5/asyncio/tasks.py", line 296, in _wakeup
Nov 22 11:28:32 tchellopi hass[20138]: future.result()
Nov 22 11:28:32 tchellopi hass[20138]: File "/usr/local/lib/python3.5/asyncio/futures.py", line 274, in result
Nov 22 11:28:32 tchellopi hass[20138]: raise self._exception
Nov 22 11:28:32 tchellopi hass[20138]: File "/usr/local/lib/python3.5/concurrent/futures/thread.py", line 55, in run
Nov 22 11:28:32 tchellopi hass[20138]: result = self.fn(*self.args, **self.kwargs)
Nov 22 11:28:32 tchellopi hass[20138]: File "/home/hass/.homeassistant/custom_components/sensor/wunderground.py", line 187, in update
Nov 22 11:28:32 tchellopi hass[20138]: self.rest.update()
Nov 22 11:28:32 tchellopi hass[20138]: File "/home/hass/.virtualenvs/home_assistant/lib/python3.5/site-packages/homeassistant/util/__init__.py", line 296, in wrapper
Nov 22 11:28:32 tchellopi hass[20138]: result = method(*args, **kwargs)
Nov 22 11:28:32 tchellopi hass[20138]: File "/home/hass/.homeassistant/custom_components/sensor/wunderground.py", line 222, in update
Nov 22 11:28:32 tchellopi hass[20138]: ["description"])
Nov 22 11:28:32 tchellopi hass[20138]: ValueError: you must supply a key
* Updated unittest since we are just printing the error instead raising
c22a73e1d0