Use voluptuous for statsd (#2928)

* Migrate to voluptuous

* Update tests

homeassistant/components/statsd.py

@@ -6,27 +6,36 @@ https://home-assistant.io/components/statsd/
 """
 import logging
 
-import homeassistant.util as util
-from homeassistant.const import EVENT_STATE_CHANGED
+import voluptuous as vol
+
+from homeassistant.const import (
+    CONF_HOST, CONF_PORT, CONF_PREFIX, EVENT_STATE_CHANGED)
+import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers import state as state_helper
 
+REQUIREMENTS = ['statsd==3.2.1']
+
 _LOGGER = logging.getLogger(__name__)
 
-DOMAIN = "statsd"
-DEPENDENCIES = []
+CONF_ATTR = 'log_attributes'
+CONF_RATE = 'rate'
 
 DEFAULT_HOST = 'localhost'
 DEFAULT_PORT = 8125
 DEFAULT_PREFIX = 'hass'
 DEFAULT_RATE = 1
+DOMAIN = 'statsd'
 
-REQUIREMENTS = ['statsd==3.2.1']
-
-CONF_HOST = 'host'
-CONF_PORT = 'port'
-CONF_PREFIX = 'prefix'
-CONF_RATE = 'rate'
-CONF_ATTR = 'log_attributes'
+CONFIG_SCHEMA = vol.Schema({
+    DOMAIN: vol.Schema({
+        vol.Required(CONF_HOST, default=DEFAULT_HOST): cv.string,
+        vol.Optional(CONF_ATTR, default=False): cv.boolean,
+        vol.Optional(CONF_PORT, default=DEFAULT_PORT): cv.port,
+        vol.Optional(CONF_PREFIX, default=DEFAULT_PREFIX): cv.string,
+        vol.Optional(CONF_RATE, default=DEFAULT_RATE):
+            vol.All(vol.Coerce(int), vol.Range(min=1)),
+    }),
+}, extra=vol.ALLOW_EXTRA)
 
 
 def setup(hass, config):
@@ -34,18 +43,13 @@ def setup(hass, config):
     import statsd
 
     conf = config[DOMAIN]
+    host = conf.get(CONF_HOST)
+    port = conf.get(CONF_PORT)
+    sample_rate = conf.get(CONF_RATE)
+    prefix = conf.get(CONF_PREFIX)
+    show_attribute_flag = conf.get(CONF_ATTR)
 
-    host = conf[CONF_HOST]
-    port = util.convert(conf.get(CONF_PORT), int, DEFAULT_PORT)
-    sample_rate = util.convert(conf.get(CONF_RATE), int, DEFAULT_RATE)
-    prefix = util.convert(conf.get(CONF_PREFIX), str, DEFAULT_PREFIX)
-    show_attribute_flag = conf.get(CONF_ATTR, False)
-
-    statsd_client = statsd.StatsClient(
-        host=host,
-        port=port,
-        prefix=prefix
-    )
+    statsd_client = statsd.StatsClient(host=host, port=port, prefix=prefix)
 
     def statsd_event_listener(event):
         """Listen for new messages on the bus and sends them to StatsD."""

tests/components/test_statsd.py

@@ -2,14 +2,29 @@
 import unittest
 from unittest import mock
 
+import voluptuous as vol
+
 import homeassistant.core as ha
 import homeassistant.components.statsd as statsd
-from homeassistant.const import STATE_ON, STATE_OFF, EVENT_STATE_CHANGED
+from homeassistant.const import (STATE_ON, STATE_OFF, EVENT_STATE_CHANGED)
 
 
 class TestStatsd(unittest.TestCase):
     """Test the StatsD component."""
 
+    def test_invalid_config(self):
+        """Test configuration with defaults."""
+        config = {
+            'statsd': {
+                'host1': 'host1',
+            }
+        }
+
+        with self.assertRaises(vol.Invalid):
+            statsd.CONFIG_SCHEMA(None)
+        with self.assertRaises(vol.Invalid):
+            statsd.CONFIG_SCHEMA(config)
+
     @mock.patch('statsd.StatsClient')
     def test_statsd_setup_full(self, mock_connection):
         """Test setup with all data."""
@@ -40,12 +55,16 @@ class TestStatsd(unittest.TestCase):
                 'host': 'host',
             }
         }
+
+        config['statsd'][statsd.CONF_PORT] = statsd.DEFAULT_PORT
+        config['statsd'][statsd.CONF_PREFIX] = statsd.DEFAULT_PREFIX
+
         hass = mock.MagicMock()
         self.assertTrue(statsd.setup(hass, config))
         mock_connection.assert_called_once_with(
             host='host',
-            port=statsd.DEFAULT_PORT,
-            prefix=statsd.DEFAULT_PREFIX)
+            port=8125,
+            prefix='hass')
         self.assertTrue(hass.bus.listen.called)
 
     @mock.patch('statsd.StatsClient')
@@ -56,6 +75,9 @@ class TestStatsd(unittest.TestCase):
                 'host': 'host',
             }
         }
+
+        config['statsd'][statsd.CONF_RATE] = statsd.DEFAULT_RATE
+
         hass = mock.MagicMock()
         statsd.setup(hass, config)
         self.assertTrue(hass.bus.listen.called)
@@ -94,6 +116,9 @@ class TestStatsd(unittest.TestCase):
                 'log_attributes': True
             }
         }
+
+        config['statsd'][statsd.CONF_RATE] = statsd.DEFAULT_RATE
+
         hass = mock.MagicMock()
         statsd.setup(hass, config)
         self.assertTrue(hass.bus.listen.called)