Added unit tests for packets.

Also did some code cleanup.

tests/plugins/test_time.py

@@ -12,26 +12,26 @@ CONF = cfg.CONF
 
 
 class TestTimePlugins(test_plugin.TestPlugin):
-    @mock.patch("aprsd.plugins.time.TimePlugin._get_local_tz")
-    @mock.patch("aprsd.plugins.time.TimePlugin._get_utcnow")
+    @mock.patch('aprsd.plugins.time.TimePlugin._get_local_tz')
+    @mock.patch('aprsd.plugins.time.TimePlugin._get_utcnow')
     def test_time(self, mock_utcnow, mock_localtz):
         utcnow = pytz.datetime.datetime.utcnow()
         mock_utcnow.return_value = utcnow
-        tz = pytz.timezone("US/Pacific")
+        tz = pytz.timezone('US/Pacific')
         mock_localtz.return_value = tz
 
         gmt_t = pytz.utc.localize(utcnow)
         local_t = gmt_t.astimezone(tz)
 
         fake_time = mock.MagicMock()
-        h = int(local_t.strftime("%H"))
-        m = int(local_t.strftime("%M"))
+        h = int(local_t.strftime('%H'))
+        m = int(local_t.strftime('%M'))
         fake_time.tm_sec = 13
         CONF.callsign = fake.FAKE_TO_CALLSIGN
         time = time_plugin.TimePlugin()
 
         packet = fake.fake_packet(
-            message="location",
+            message='location',
             msg_number=1,
         )
 
@@ -41,11 +41,11 @@ class TestTimePlugins(test_plugin.TestPlugin):
         cur_time = fuzzy(h, m, 1)
 
         packet = fake.fake_packet(
-            message="time",
+            message='time',
             msg_number=1,
         )
-        local_short_str = local_t.strftime("%H:%M %Z")
-        expected = "{} ({})".format(
+        local_short_str = local_t.strftime('%H:%M %Z')
+        expected = '{} ({})'.format(
             cur_time,
             local_short_str,
         )