Add basic unit tests for the bot

This commit adds some simple unit tests for bot.py to add some basic
testing for the bot.

Change-Id: I02ea82a1c0a6987178060e20bb2aca53b5a30063

elastic_recheck/bot.py

@@ -135,6 +135,8 @@ class RecheckWatch(threading.Thread):
                 else:
                     if channel in self.channel_config.events['negative']:
                         self.new_error(channel, event)
+            else:
+                raise Exception('No event or msg specified')
 
     def run(self):
         # Import here because it needs to happen after daemonization

elastic_recheck/tests/unit/test_bot.py

@@ -0,0 +1,81 @@
+# Copyright 2014 IBM Corp.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import ConfigParser
+import unittest
+import yaml
+
+from elastic_recheck import bot
+
+
+# NOTE(mtreinish) Using unittest here because testtools TestCase.assertRaises
+# doesn't support using it as a context manager
+class TestBot(unittest.TestCase):
+
+    def setUp(self):
+        super(TestBot, self).setUp()
+        self.fake_config = ConfigParser.ConfigParser({'server_password': None})
+        self._set_fake_config()
+        self.channel_config = bot.ChannelConfig(yaml.load(
+            open('recheckwatchbot.yaml')))
+        self.recheck_watch = bot.RecheckWatch(None, self.channel_config,
+                                              self.fake_config.get('gerrit',
+                                                                   'user'),
+                                              self.fake_config.get(
+                                                  'gerrit',
+                                                  'query_file'),
+                                              self.fake_config.get('gerrit',
+                                                                   'host'),
+                                              self.fake_config.get('gerrit',
+                                                                   'key'),
+                                              False)
+
+    def _set_fake_config(self):
+        self.fake_config.add_section('ircbot')
+        self.fake_config.add_section('gerrit')
+        # Set fake ircbot config
+        self.fake_config.set('ircbot', 'nick', 'Fake_User')
+        self.fake_config.set('ircbot', 'pass', '')
+        self.fake_config.set('ircbot', 'server', 'irc.fake.net')
+        self.fake_config.set('ircbot', 'port', 6667)
+        self.fake_config.set('ircbot', 'channel_config',
+                             'fake_recheck_watch_bot.yaml')
+        # Set fake gerrit config
+        self.fake_config.set('gerrit', 'user', 'fake_user')
+        self.fake_config.set('gerrit', 'query_file', 'fake_query_file')
+        self.fake_config.set('gerrit', 'host', 'fake_host.openstack.org')
+        self.fake_config.set('gerrit', 'key', 'abc123def456')
+
+    def test_read_channel_config_not_specified(self):
+        self.fake_config.set('ircbot', 'channel_config', None)
+        with self.assertRaises(Exception) as exc:
+            bot._main([], self.fake_config)
+        raised_exc = exc.exception
+        self.assertEquals(str(raised_exc), "Channel Config must be specified "
+                          "in config file.")
+
+    def test_read_channel_config_invalid_path(self):
+        self.fake_config.set('ircbot', 'channel_config', 'fake_path.yaml')
+        with self.assertRaises(Exception) as exc:
+            bot._main([], self.fake_config)
+        raised_exc = exc.exception
+        error_msg = "Unable to read layout config file at fake_path.yaml"
+        self.assertEquals(str(raised_exc), error_msg)
+
+    def test__read_no_event_no_msg(self):
+        with self.assertRaises(Exception) as exc:
+            self.recheck_watch._read()
+        raised_exc = exc.exception
+        error_msg = 'No event or msg specified'
+        self.assertEquals(str(raised_exc), error_msg)