diff --git a/import-layers/yocto-poky/bitbake/lib/bb/tests/event.py b/import-layers/yocto-poky/bitbake/lib/bb/tests/event.py
index c7eb1fe..d3a5f62 100644
--- a/import-layers/yocto-poky/bitbake/lib/bb/tests/event.py
+++ b/import-layers/yocto-poky/bitbake/lib/bb/tests/event.py
@@ -30,28 +30,45 @@
 import pickle
 from unittest.mock import Mock
 from unittest.mock import call
+from bb.msg import BBLogFormatter
 
 
-class EventQueueStub():
+class EventQueueStubBase(object):
+    """ Base class for EventQueueStub classes """
+    def __init__(self):
+        self.event_calls = []
+        return
+
+    def _store_event_data_string(self, event):
+        if isinstance(event, logging.LogRecord):
+            formatter = BBLogFormatter("%(levelname)s: %(message)s")
+            self.event_calls.append(formatter.format(event))
+        else:
+            self.event_calls.append(bb.event.getName(event))
+        return
+
+
+class EventQueueStub(EventQueueStubBase):
     """ Class used as specification for UI event handler queue stub objects """
     def __init__(self):
-        return
+        super(EventQueueStub, self).__init__()
 
     def send(self, event):
-        return
+        super(EventQueueStub, self)._store_event_data_string(event)
 
 
-class PickleEventQueueStub():
+class PickleEventQueueStub(EventQueueStubBase):
     """ Class used as specification for UI event handler queue stub objects
         with sendpickle method """
     def __init__(self):
-        return
+        super(PickleEventQueueStub, self).__init__()
 
     def sendpickle(self, pickled_event):
-        return
+        event = pickle.loads(pickled_event)
+        super(PickleEventQueueStub, self)._store_event_data_string(event)
 
 
-class UIClientStub():
+class UIClientStub(object):
     """ Class used as specification for UI event handler stub objects """
     def __init__(self):
         self.event = None
@@ -59,7 +76,7 @@
 
 class EventHandlingTest(unittest.TestCase):
     """ Event handling test class """
-    _threadlock_test_calls = []
+
 
     def setUp(self):
         self._test_process = Mock()
@@ -179,6 +196,33 @@
         self.assertEqual(self._test_process.event_handler2.call_args_list,
                          expected_event_handler2)
 
+    def test_class_handler_filters(self):
+        """ Test filters for class handlers """
+        mask = ["bb.event.OperationStarted"]
+        result = bb.event.register("event_handler1",
+                                   self._test_process.event_handler1,
+                                   mask)
+        self.assertEqual(result, bb.event.Registered)
+        result = bb.event.register("event_handler2",
+                                   self._test_process.event_handler2,
+                                   "*")
+        self.assertEqual(result, bb.event.Registered)
+        bb.event.set_eventfilter(
+            lambda name, handler, event, d :
+            name == 'event_handler2' and
+            bb.event.getName(event) == "OperationStarted")
+        event1 = bb.event.OperationStarted()
+        event2 = bb.event.OperationCompleted(total=123)
+        bb.event.fire_class_handlers(event1, None)
+        bb.event.fire_class_handlers(event2, None)
+        bb.event.fire_class_handlers(event2, None)
+        expected_event_handler1 = []
+        expected_event_handler2 = [call(event1)]
+        self.assertEqual(self._test_process.event_handler1.call_args_list,
+                         expected_event_handler1)
+        self.assertEqual(self._test_process.event_handler2.call_args_list,
+                         expected_event_handler2)
+
     def test_change_handler_event_mapping(self):
         """ Test changing the event mapping for class handlers """
         event1 = bb.event.OperationStarted()
@@ -196,8 +240,8 @@
                          expected)
 
         # unregister handler and register it only for OperationStarted
-        result = bb.event.remove("event_handler1",
-                                 self._test_process.event_handler1)
+        bb.event.remove("event_handler1",
+                        self._test_process.event_handler1)
         mask = ["bb.event.OperationStarted"]
         result = bb.event.register("event_handler1",
                                    self._test_process.event_handler1,
@@ -210,8 +254,8 @@
                          expected)
 
         # unregister handler and register it only for OperationCompleted
-        result = bb.event.remove("event_handler1",
-                                 self._test_process.event_handler1)
+        bb.event.remove("event_handler1",
+                        self._test_process.event_handler1)
         mask = ["bb.event.OperationCompleted"]
         result = bb.event.register("event_handler1",
                                    self._test_process.event_handler1,
@@ -259,6 +303,61 @@
         self.assertEqual(self._test_ui2.event.sendpickle.call_args_list,
                          expected)
 
+    def test_ui_handler_mask_filter(self):
+        """ Test filters for UI handlers """
+        mask = ["bb.event.OperationStarted"]
+        debug_domains = {}
+        self._test_ui1.event = Mock(spec_set=EventQueueStub)
+        result = bb.event.register_UIHhandler(self._test_ui1, mainui=True)
+        bb.event.set_UIHmask(result, logging.INFO, debug_domains, mask)
+        self._test_ui2.event = Mock(spec_set=PickleEventQueueStub)
+        result = bb.event.register_UIHhandler(self._test_ui2, mainui=True)
+        bb.event.set_UIHmask(result, logging.INFO, debug_domains, mask)
+
+        event1 = bb.event.OperationStarted()
+        event2 = bb.event.OperationCompleted(total=1)
+
+        bb.event.fire_ui_handlers(event1, None)
+        bb.event.fire_ui_handlers(event2, None)
+        expected = [call(event1)]
+        self.assertEqual(self._test_ui1.event.send.call_args_list,
+                         expected)
+        expected = [call(pickle.dumps(event1))]
+        self.assertEqual(self._test_ui2.event.sendpickle.call_args_list,
+                         expected)
+
+    def test_ui_handler_log_filter(self):
+        """ Test log filters for UI handlers """
+        mask = ["*"]
+        debug_domains = {'BitBake.Foo': logging.WARNING}
+
+        self._test_ui1.event = EventQueueStub()
+        result = bb.event.register_UIHhandler(self._test_ui1, mainui=True)
+        bb.event.set_UIHmask(result, logging.ERROR, debug_domains, mask)
+        self._test_ui2.event = PickleEventQueueStub()
+        result = bb.event.register_UIHhandler(self._test_ui2, mainui=True)
+        bb.event.set_UIHmask(result, logging.ERROR, debug_domains, mask)
+
+        event1 = bb.event.OperationStarted()
+        bb.event.fire_ui_handlers(event1, None)   # All events match
+
+        event_log_handler = bb.event.LogHandler()
+        logger = logging.getLogger("BitBake")
+        logger.addHandler(event_log_handler)
+        logger1 = logging.getLogger("BitBake.Foo")
+        logger1.warning("Test warning LogRecord1") # Matches debug_domains level
+        logger1.info("Test info LogRecord")        # Filtered out
+        logger2 = logging.getLogger("BitBake.Bar")
+        logger2.error("Test error LogRecord")      # Matches filter base level
+        logger2.warning("Test warning LogRecord2") # Filtered out
+        logger.removeHandler(event_log_handler)
+
+        expected = ['OperationStarted',
+                    'WARNING: Test warning LogRecord1',
+                    'ERROR: Test error LogRecord']
+        self.assertEqual(self._test_ui1.event.event_calls, expected)
+        self.assertEqual(self._test_ui2.event.event_calls, expected)
+
     def test_fire(self):
         """ Test fire method used to trigger class and ui event handlers """
         mask = ["bb.event.ConfigParsed"]
@@ -289,18 +388,28 @@
         self.assertEqual(self._test_ui1.event.send.call_args_list,
                          expected)
 
+    def test_worker_fire(self):
+        """ Test the triggering of bb.event.worker_fire callback """
+        bb.event.worker_fire = Mock()
+        event = bb.event.Event()
+        bb.event.fire(event, None)
+        expected = [call(event, None)]
+        self.assertEqual(bb.event.worker_fire.call_args_list, expected)
+
     def test_print_ui_queue(self):
         """ Test print_ui_queue method """
         event1 = bb.event.OperationStarted()
         event2 = bb.event.OperationCompleted(total=123)
         bb.event.fire(event1, None)
         bb.event.fire(event2, None)
+        event_log_handler = bb.event.LogHandler()
         logger = logging.getLogger("BitBake")
-        logger.addHandler(bb.event.LogHandler())
+        logger.addHandler(event_log_handler)
         logger.info("Test info LogRecord")
         logger.warning("Test warning LogRecord")
         with self.assertLogs("BitBake", level="INFO") as cm:
             bb.event.print_ui_queue()
+        logger.removeHandler(event_log_handler)
         self.assertEqual(cm.output,
                          ["INFO:BitBake:Test info LogRecord",
                           "WARNING:BitBake:Test warning LogRecord"])
@@ -364,6 +473,7 @@
         self.assertEqual(self._threadlock_test_calls,
                          ["w1_ui1", "w1_ui2", "w2_ui1", "w2_ui2"])
 
+
     def test_disable_threadlock(self):
         """ Test disable_threadlock method """
         self._set_threadlock_test_mockups()
@@ -375,3 +485,502 @@
         # processed before finishing handling the first worker event.
         self.assertEqual(self._threadlock_test_calls,
                          ["w1_ui1", "w2_ui1", "w1_ui2", "w2_ui2"])
+
+
+class EventClassesTest(unittest.TestCase):
+    """ Event classes test class """
+
+    _worker_pid = 54321
+
+    def setUp(self):
+        bb.event.worker_pid = EventClassesTest._worker_pid
+
+    def test_Event(self):
+        """ Test the Event base class """
+        event = bb.event.Event()
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_HeartbeatEvent(self):
+        """ Test the HeartbeatEvent class """
+        time = 10
+        event = bb.event.HeartbeatEvent(time)
+        self.assertEqual(event.time, time)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_OperationStarted(self):
+        """ Test OperationStarted event class """
+        msg = "Foo Bar"
+        event = bb.event.OperationStarted(msg)
+        self.assertEqual(event.msg, msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_OperationCompleted(self):
+        """ Test OperationCompleted event class """
+        msg = "Foo Bar"
+        total = 123
+        event = bb.event.OperationCompleted(total, msg)
+        self.assertEqual(event.msg, msg)
+        self.assertEqual(event.total, total)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_OperationProgress(self):
+        """ Test OperationProgress event class """
+        msg = "Foo Bar"
+        total = 123
+        current = 111
+        event = bb.event.OperationProgress(current, total, msg)
+        self.assertEqual(event.msg, msg + ": %s/%s" % (current, total))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ConfigParsed(self):
+        """ Test the ConfigParsed class """
+        event = bb.event.ConfigParsed()
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_MultiConfigParsed(self):
+        """ Test MultiConfigParsed event class """
+        mcdata = {"foobar": "Foo Bar"}
+        event = bb.event.MultiConfigParsed(mcdata)
+        self.assertEqual(event.mcdata, mcdata)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_RecipeEvent(self):
+        """ Test RecipeEvent event base class """
+        callback = lambda a: 2 * a
+        event = bb.event.RecipeEvent(callback)
+        self.assertEqual(event.fn(1), callback(1))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_RecipePreFinalise(self):
+        """ Test RecipePreFinalise event class """
+        callback = lambda a: 2 * a
+        event = bb.event.RecipePreFinalise(callback)
+        self.assertEqual(event.fn(1), callback(1))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_RecipeTaskPreProcess(self):
+        """ Test RecipeTaskPreProcess event class """
+        callback = lambda a: 2 * a
+        tasklist = [("foobar", callback)]
+        event = bb.event.RecipeTaskPreProcess(callback, tasklist)
+        self.assertEqual(event.fn(1), callback(1))
+        self.assertEqual(event.tasklist, tasklist)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_RecipeParsed(self):
+        """ Test RecipeParsed event base class """
+        callback = lambda a: 2 * a
+        event = bb.event.RecipeParsed(callback)
+        self.assertEqual(event.fn(1), callback(1))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_StampUpdate(self):
+        targets = ["foo", "bar"]
+        stampfns = [lambda:"foobar"]
+        event = bb.event.StampUpdate(targets, stampfns)
+        self.assertEqual(event.targets, targets)
+        self.assertEqual(event.stampPrefix, stampfns)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_BuildBase(self):
+        """ Test base class for bitbake build events """
+        name = "foo"
+        pkgs = ["bar"]
+        failures = 123
+        event = bb.event.BuildBase(name, pkgs, failures)
+        self.assertEqual(event.name, name)
+        self.assertEqual(event.pkgs, pkgs)
+        self.assertEqual(event.getFailures(), failures)
+        name = event.name = "bar"
+        pkgs = event.pkgs = ["foo"]
+        self.assertEqual(event.name, name)
+        self.assertEqual(event.pkgs, pkgs)
+        self.assertEqual(event.getFailures(), failures)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_BuildInit(self):
+        """ Test class for bitbake build invocation events """
+        event = bb.event.BuildInit()
+        self.assertEqual(event.name, None)
+        self.assertEqual(event.pkgs, [])
+        self.assertEqual(event.getFailures(), 0)
+        name = event.name = "bar"
+        pkgs = event.pkgs = ["foo"]
+        self.assertEqual(event.name, name)
+        self.assertEqual(event.pkgs, pkgs)
+        self.assertEqual(event.getFailures(), 0)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_BuildStarted(self):
+        """ Test class for build started events """
+        name = "foo"
+        pkgs = ["bar"]
+        failures = 123
+        event = bb.event.BuildStarted(name, pkgs, failures)
+        self.assertEqual(event.name, name)
+        self.assertEqual(event.pkgs, pkgs)
+        self.assertEqual(event.getFailures(), failures)
+        self.assertEqual(event.msg, "Building Started")
+        name = event.name = "bar"
+        pkgs = event.pkgs = ["foo"]
+        msg = event.msg = "foobar"
+        self.assertEqual(event.name, name)
+        self.assertEqual(event.pkgs, pkgs)
+        self.assertEqual(event.getFailures(), failures)
+        self.assertEqual(event.msg, msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_BuildCompleted(self):
+        """ Test class for build completed events """
+        total = 1000
+        name = "foo"
+        pkgs = ["bar"]
+        failures = 123
+        interrupted = 1
+        event = bb.event.BuildCompleted(total, name, pkgs, failures,
+                                        interrupted)
+        self.assertEqual(event.name, name)
+        self.assertEqual(event.pkgs, pkgs)
+        self.assertEqual(event.getFailures(), failures)
+        self.assertEqual(event.msg, "Building Failed")
+        event2 = bb.event.BuildCompleted(total, name, pkgs)
+        self.assertEqual(event2.name, name)
+        self.assertEqual(event2.pkgs, pkgs)
+        self.assertEqual(event2.getFailures(), 0)
+        self.assertEqual(event2.msg, "Building Succeeded")
+        self.assertEqual(event2.pid, EventClassesTest._worker_pid)
+
+    def test_DiskFull(self):
+        """ Test DiskFull event class """
+        dev = "/dev/foo"
+        type = "ext4"
+        freespace = "104M"
+        mountpoint = "/"
+        event = bb.event.DiskFull(dev, type, freespace, mountpoint)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_MonitorDiskEvent(self):
+        """ Test MonitorDiskEvent class """
+        available_bytes = 10000000
+        free_bytes = 90000000
+        total_bytes = 1000000000
+        du = bb.event.DiskUsageSample(available_bytes, free_bytes,
+                                      total_bytes)
+        event = bb.event.MonitorDiskEvent(du)
+        self.assertEqual(event.disk_usage.available_bytes, available_bytes)
+        self.assertEqual(event.disk_usage.free_bytes, free_bytes)
+        self.assertEqual(event.disk_usage.total_bytes, total_bytes)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_NoProvider(self):
+        """ Test NoProvider event class """
+        item = "foobar"
+        event1 = bb.event.NoProvider(item)
+        self.assertEqual(event1.getItem(), item)
+        self.assertEqual(event1.isRuntime(), False)
+        self.assertEqual(str(event1), "Nothing PROVIDES 'foobar'")
+        runtime = True
+        dependees = ["foo", "bar"]
+        reasons = None
+        close_matches = ["foibar", "footbar"]
+        event2 = bb.event.NoProvider(item, runtime, dependees, reasons,
+                                     close_matches)
+        self.assertEqual(event2.isRuntime(), True)
+        expected = ("Nothing RPROVIDES 'foobar' (but foo, bar RDEPENDS"
+                    " on or otherwise requires it). Close matches:\n"
+                    "  foibar\n"
+                    "  footbar")
+        self.assertEqual(str(event2), expected)
+        reasons = ["Item does not exist on database"]
+        close_matches = ["foibar", "footbar"]
+        event3 = bb.event.NoProvider(item, runtime, dependees, reasons,
+                                     close_matches)
+        expected = ("Nothing RPROVIDES 'foobar' (but foo, bar RDEPENDS"
+                    " on or otherwise requires it)\n"
+                    "Item does not exist on database")
+        self.assertEqual(str(event3), expected)
+        self.assertEqual(event3.pid, EventClassesTest._worker_pid)
+
+    def test_MultipleProviders(self):
+        """ Test MultipleProviders event class """
+        item = "foobar"
+        candidates = ["foobarv1", "foobars"]
+        event1 = bb.event.MultipleProviders(item, candidates)
+        self.assertEqual(event1.isRuntime(), False)
+        self.assertEqual(event1.getItem(), item)
+        self.assertEqual(event1.getCandidates(), candidates)
+        expected = ("Multiple providers are available for foobar (foobarv1,"
+                    " foobars)\n"
+                    "Consider defining a PREFERRED_PROVIDER entry to match "
+                    "foobar")
+        self.assertEqual(str(event1), expected)
+        runtime = True
+        event2 = bb.event.MultipleProviders(item, candidates, runtime)
+        self.assertEqual(event2.isRuntime(), runtime)
+        expected = ("Multiple providers are available for runtime foobar "
+                    "(foobarv1, foobars)\n"
+                    "Consider defining a PREFERRED_RPROVIDER entry to match "
+                    "foobar")
+        self.assertEqual(str(event2), expected)
+        self.assertEqual(event2.pid, EventClassesTest._worker_pid)
+
+    def test_ParseStarted(self):
+        """ Test ParseStarted event class """
+        total = 123
+        event = bb.event.ParseStarted(total)
+        self.assertEqual(event.msg, "Recipe parsing Started")
+        self.assertEqual(event.total, total)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ParseCompleted(self):
+        """ Test ParseCompleted event class """
+        cached = 10
+        parsed = 13
+        skipped = 7
+        virtuals = 2
+        masked = 1
+        errors = 0
+        total = 23
+        event = bb.event.ParseCompleted(cached, parsed, skipped, masked,
+                                        virtuals, errors, total)
+        self.assertEqual(event.msg, "Recipe parsing Completed")
+        expected = [cached, parsed, skipped, virtuals, masked, errors,
+                    cached + parsed, total]
+        actual = [event.cached, event.parsed, event.skipped, event.virtuals,
+                  event.masked, event.errors, event.sofar, event.total]
+        self.assertEqual(str(actual), str(expected))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ParseProgress(self):
+        """ Test ParseProgress event class """
+        current = 10
+        total = 100
+        event = bb.event.ParseProgress(current, total)
+        self.assertEqual(event.msg,
+                         "Recipe parsing" + ": %s/%s" % (current, total))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_CacheLoadStarted(self):
+        """ Test CacheLoadStarted event class """
+        total = 123
+        event = bb.event.CacheLoadStarted(total)
+        self.assertEqual(event.msg, "Loading cache Started")
+        self.assertEqual(event.total, total)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_CacheLoadProgress(self):
+        """ Test CacheLoadProgress event class """
+        current = 10
+        total = 100
+        event = bb.event.CacheLoadProgress(current, total)
+        self.assertEqual(event.msg,
+                         "Loading cache" + ": %s/%s" % (current, total))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_CacheLoadCompleted(self):
+        """ Test CacheLoadCompleted event class """
+        total = 23
+        num_entries = 12
+        event = bb.event.CacheLoadCompleted(total, num_entries)
+        self.assertEqual(event.msg, "Loading cache Completed")
+        expected = [total, num_entries]
+        actual = [event.total, event.num_entries]
+        self.assertEqual(str(actual), str(expected))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_TreeDataPreparationStarted(self):
+        """ Test TreeDataPreparationStarted event class """
+        event = bb.event.TreeDataPreparationStarted()
+        self.assertEqual(event.msg, "Preparing tree data Started")
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_TreeDataPreparationProgress(self):
+        """ Test TreeDataPreparationProgress event class """
+        current = 10
+        total = 100
+        event = bb.event.TreeDataPreparationProgress(current, total)
+        self.assertEqual(event.msg,
+                         "Preparing tree data" + ": %s/%s" % (current, total))
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_TreeDataPreparationCompleted(self):
+        """ Test TreeDataPreparationCompleted event class """
+        total = 23
+        event = bb.event.TreeDataPreparationCompleted(total)
+        self.assertEqual(event.msg, "Preparing tree data Completed")
+        self.assertEqual(event.total, total)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_DepTreeGenerated(self):
+        """ Test DepTreeGenerated event class """
+        depgraph = Mock()
+        event = bb.event.DepTreeGenerated(depgraph)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_TargetsTreeGenerated(self):
+        """ Test TargetsTreeGenerated event class """
+        model = Mock()
+        event = bb.event.TargetsTreeGenerated(model)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ReachableStamps(self):
+        """ Test ReachableStamps event class """
+        stamps = [Mock(), Mock()]
+        event = bb.event.ReachableStamps(stamps)
+        self.assertEqual(event.stamps, stamps)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_FilesMatchingFound(self):
+        """ Test FilesMatchingFound event class """
+        pattern = "foo.*bar"
+        matches = ["foobar"]
+        event = bb.event.FilesMatchingFound(pattern, matches)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ConfigFilesFound(self):
+        """ Test ConfigFilesFound event class """
+        variable = "FOO_BAR"
+        values = ["foo", "bar"]
+        event = bb.event.ConfigFilesFound(variable, values)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ConfigFilePathFound(self):
+        """ Test ConfigFilePathFound event class """
+        path = "/foo/bar"
+        event = bb.event.ConfigFilePathFound(path)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_message_classes(self):
+        """ Test message event classes """
+        msg = "foobar foo bar"
+        event = bb.event.MsgBase(msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+        event = bb.event.MsgDebug(msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+        event = bb.event.MsgNote(msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+        event = bb.event.MsgWarn(msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+        event = bb.event.MsgError(msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+        event = bb.event.MsgFatal(msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+        event = bb.event.MsgPlain(msg)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_LogExecTTY(self):
+        """ Test LogExecTTY event class """
+        msg = "foo bar"
+        prog = "foo.sh"
+        sleep_delay = 10
+        retries = 3
+        event = bb.event.LogExecTTY(msg, prog, sleep_delay, retries)
+        self.assertEqual(event.msg, msg)
+        self.assertEqual(event.prog, prog)
+        self.assertEqual(event.sleep_delay, sleep_delay)
+        self.assertEqual(event.retries, retries)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def _throw_zero_division_exception(self):
+        a = 1 / 0
+        return
+
+    def _worker_handler(self, event, d):
+        self._returned_event = event
+        return
+
+    def test_LogHandler(self):
+        """ Test LogHandler class """
+        logger = logging.getLogger("TestEventClasses")
+        logger.propagate = False
+        handler = bb.event.LogHandler(logging.INFO)
+        logger.addHandler(handler)
+        bb.event.worker_fire = self._worker_handler
+        try:
+            self._throw_zero_division_exception()
+        except ZeroDivisionError as ex:
+            logger.exception(ex)
+        event = self._returned_event
+        try:
+            pe = pickle.dumps(event)
+            newevent = pickle.loads(pe)
+        except:
+            self.fail('Logged event is not serializable')
+        self.assertEqual(event.taskpid, EventClassesTest._worker_pid)
+
+    def test_MetadataEvent(self):
+        """ Test MetadataEvent class """
+        eventtype = "footype"
+        eventdata = {"foo": "bar"}
+        event = bb.event.MetadataEvent(eventtype, eventdata)
+        self.assertEqual(event.type, eventtype)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ProcessStarted(self):
+        """ Test ProcessStarted class """
+        processname = "foo"
+        total = 9783128974
+        event = bb.event.ProcessStarted(processname, total)
+        self.assertEqual(event.processname, processname)
+        self.assertEqual(event.total, total)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ProcessProgress(self):
+        """ Test ProcessProgress class """
+        processname = "foo"
+        progress = 243224
+        event = bb.event.ProcessProgress(processname, progress)
+        self.assertEqual(event.processname, processname)
+        self.assertEqual(event.progress, progress)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_ProcessFinished(self):
+        """ Test ProcessFinished class """
+        processname = "foo"
+        total = 1242342344
+        event = bb.event.ProcessFinished(processname)
+        self.assertEqual(event.processname, processname)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_SanityCheck(self):
+        """ Test SanityCheck class """
+        event1 = bb.event.SanityCheck()
+        self.assertEqual(event1.generateevents, True)
+        self.assertEqual(event1.pid, EventClassesTest._worker_pid)
+        generateevents = False
+        event2 = bb.event.SanityCheck(generateevents)
+        self.assertEqual(event2.generateevents, generateevents)
+        self.assertEqual(event2.pid, EventClassesTest._worker_pid)
+
+    def test_SanityCheckPassed(self):
+        """ Test SanityCheckPassed class """
+        event = bb.event.SanityCheckPassed()
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)
+
+    def test_SanityCheckFailed(self):
+        """ Test SanityCheckFailed class """
+        msg = "The sanity test failed."
+        event1 = bb.event.SanityCheckFailed(msg)
+        self.assertEqual(event1.pid, EventClassesTest._worker_pid)
+        network_error = True
+        event2 = bb.event.SanityCheckFailed(msg, network_error)
+        self.assertEqual(event2.pid, EventClassesTest._worker_pid)
+
+    def test_network_event_classes(self):
+        """ Test network event classes """
+        event1 = bb.event.NetworkTest()
+        generateevents = False
+        self.assertEqual(event1.pid, EventClassesTest._worker_pid)
+        event2 = bb.event.NetworkTest(generateevents)
+        self.assertEqual(event2.pid, EventClassesTest._worker_pid)
+        event3 = bb.event.NetworkTestPassed()
+        self.assertEqual(event3.pid, EventClassesTest._worker_pid)
+        event4 = bb.event.NetworkTestFailed()
+        self.assertEqual(event4.pid, EventClassesTest._worker_pid)
+
+    def test_FindSigInfoResult(self):
+        """ Test FindSigInfoResult event class """
+        result = [Mock()]
+        event = bb.event.FindSigInfoResult(result)
+        self.assertEqual(event.result, result)
+        self.assertEqual(event.pid, EventClassesTest._worker_pid)