Added tests for knownnodes:

- import of pickled knownnodes;
  - default knownnodes if nothing imported;
  - knownnodes starvation (#1335), demanded changes in networkthread.

src/bitmessagemain.py

@@ -367,10 +367,11 @@ class Main:
                         time.time() - state.last_api_response >= 30):
                     self.stop()
         elif not state.enableGUI:
-            from tests import core
-            test_core_result = core.run()
+            from tests import core as test_core
+            test_core_result = test_core.run()
             state.enableGUI = True
             self.stop()
+            test_core.cleanup()
             sys.exit(
                 'Core tests failed!'
                 if test_core_result.errors or test_core_result.failures

src/network/networkthread.py

@@ -1,11 +1,12 @@
 import threading
 
-from bmconfigparser import BMConfigParser
+import network.asyncore_pollchoose as asyncore
+import state
 from debug import logger
 from helper_threading import StoppableThread
-import network.asyncore_pollchoose as asyncore
 from network.connectionpool import BMConnectionPool
-import state
+from queues import excQueue
+
 
 class BMNetworkThread(threading.Thread, StoppableThread):
     def __init__(self):
@@ -15,8 +16,12 @@ class BMNetworkThread(threading.Thread, StoppableThread):
         logger.info("init asyncore thread")
 
     def run(self):
-        while not self._stopped and state.shutdown == 0:
-            BMConnectionPool().loop()
+        try:
+            while not self._stopped and state.shutdown == 0:
+                BMConnectionPool().loop()
+        except Exception as e:
+            excQueue.put((self.name, e))
+            raise
 
     def stopThread(self):
         super(BMNetworkThread, self).stopThread()

src/queues.py

@@ -6,11 +6,15 @@ from multiqueue import MultiQueue
 workerQueue = Queue.Queue()
 UISignalQueue = Queue.Queue()
 addressGeneratorQueue = Queue.Queue()
-# receiveDataThreads dump objects they hear on the network into this queue to be processed.
+# receiveDataThreads dump objects they hear on the network into this
+# queue to be processed.
 objectProcessorQueue = ObjectProcessorQueue()
 invQueue = MultiQueue()
 addrQueue = MultiQueue()
 portCheckerQueue = Queue.Queue()
 receiveDataQueue = Queue.Queue()
-apiAddressGeneratorReturnQueue = Queue.Queue(
-    )  # The address generator thread uses this queue to get information back to the API thread.
+# The address generator thread uses this queue to get information back
+# to the API thread.
+apiAddressGeneratorReturnQueue = Queue.Queue()
+# Exceptions
+excQueue = Queue.Queue()

src/tests/core.py

@@ -3,11 +3,39 @@ Tests for core and those that do not work outside
 (because of import error for example)
 """
 
+import os
+import pickle  # nosec
+import Queue
 import random  # nosec
 import string
+import time
 import unittest
 
+import knownnodes
+import state
 from helper_msgcoding import MsgEncode, MsgDecode
+from queues import excQueue
+
+knownnodes_file = os.path.join(state.appdata, 'knownnodes.dat')
+
+
+def pickle_knownnodes():
+    now = time.time()
+    with open(knownnodes_file, 'wb') as dst:
+        pickle.dump({
+            stream: {
+                state.Peer(
+                    '%i.%i.%i.%i' % tuple([
+                        random.randint(1, 255) for i in range(4)]),
+                    8444): {'lastseen': now, 'rating': 0.1}
+                for i in range(1, 4)  # 3 test nodes
+            }
+            for stream in range(1, 4)  # 3 test streams
+        }, dst)
+
+
+def cleanup():
+    os.remove(knownnodes_file)
 
 
 class TestCore(unittest.TestCase):
@@ -42,8 +70,48 @@ class TestCore(unittest.TestCase):
         self.assertEqual(msg_data['subject'], obj3e.subject)
         self.assertEqual(msg_data['body'], obj3e.body)
 
+    def _wipe_knownnodes(self):
+        with knownnodes.knownNodesLock:
+            knownnodes.knownNodes = {stream: {} for stream in range(1, 4)}
+
+    def test_knownnodes_pickle(self):
+        """ensure that 3 nodes was imported for each stream"""
+        pickle_knownnodes()
+        self._wipe_knownnodes()
+        knownnodes.readKnownNodes()
+        for nodes in knownnodes.knownNodes.itervalues():
+            self_count = n = 0
+            for n, node in enumerate(nodes.itervalues()):
+                if node.get('self'):
+                    self_count += 1
+            self.assertEqual(n - self_count, 2)
+
+    def test_knownnodes_default(self):
+        """test adding default knownnodes if nothing loaded"""
+        cleanup()
+        self._wipe_knownnodes()
+        knownnodes.readKnownNodes()
+        self.assertGreaterEqual(
+            len(knownnodes.knownNodes[1]), len(knownnodes.DEFAULT_NODES))
+
+    def test_0_cleaner(self):
+        """test knownnodes starvation leading to IndexError in Asyncore"""
+        for nodes in knownnodes.knownNodes.itervalues():
+            for node in nodes.itervalues():
+                node['lastseen'] -= 2419205  # older than 28 days
+        time.sleep(303)  # singleCleaner wakes up every 5 min
+        while True:
+            try:
+                thread, exc = excQueue.get(block=False)
+            except Queue.Empty:
+                return
+            if thread == 'Asyncore' and isinstance(exc, IndexError):
+                self.fail("IndexError because of empty knownNodes!")
+
 
 def run():
     """Starts all tests defined in this module"""
-    suite = unittest.TestLoader().loadTestsFromTestCase(TestCore)
+    loader = unittest.TestLoader()
+    loader.sortTestMethodsUsing = None
+    suite = loader.loadTestsFromTestCase(TestCore)
     return unittest.TextTestRunner(verbosity=2).run(suite)