Added test for logger component.

tests/components/test_logger.py

@@ -0,0 +1,31 @@
+"""
+tests.test_logger
+~~~~~~~~~~~~~~~~~~
+
+Tests logger component.
+"""
+import logging
+import unittest
+
+from homeassistant.components import logger
+
+
+class TestUpdater(unittest.TestCase):
+    """ Test logger component. """
+
+    def test_logger(self):
+        """ Uses logger to create a logging filter """
+        config = {'logger':
+                  {'default': 'warning',
+                   'logs': {'test': 'info'}}}
+
+        logger.setup(None, config)
+
+        self.assertTrue(len(logging.root.handlers) > 0)
+        handler = logging.root.handlers[-1]
+
+        self.assertEqual(len(handler.filters), 1)
+        log_filter = handler.filters[0].logfilter
+
+        self.assertEqual(log_filter['default'], logging.WARNING)
+        self.assertEqual(log_filter['logs']['test'], logging.INFO)