start asyncio loop in test_lnrouter and test_lnpeer

electrum/tests/test_lnpeer.py

@@ -1,4 +1,3 @@
-import unittest
 import asyncio
 import tempfile
 from decimal import Decimal
@@ -11,7 +10,7 @@ from electrum.ecc import ECPrivkey
 from electrum import simple_config, lnutil
 from electrum.lnaddr import lnencode, LnAddr, lndecode
 from electrum.bitcoin import COIN, sha256
-from electrum.util import bh2u, set_verbosity
+from electrum.util import bh2u, set_verbosity, create_and_start_event_loop
 from electrum.lnpeer import Peer
 from electrum.lnutil import LNPeerAddr, Keypair, privkey_to_pubkey
 from electrum.lnutil import LightningPeerConnectionClosed, RemoteMisbehaving
@@ -21,6 +20,7 @@ from electrum.lnworker import LNWorker
 from electrum.lnmsg import encode_msg, decode_msg
 
 from .test_lnchannel import create_test_channels
+from . import SequentialTestCase
 
 def keypair():
     priv = ECPrivkey.generate_random_key().get_secret_bytes()
@@ -37,12 +37,12 @@ class MockNetwork:
     def __init__(self, tx_queue):
         self.callbacks = defaultdict(list)
         self.lnwatcher = None
+        self.interface = None
         user_config = {}
         user_dir = tempfile.mkdtemp(prefix="electrum-lnpeer-test-")
         self.config = simple_config.SimpleConfig(user_config, read_user_dir_function=lambda: user_dir)
         self.asyncio_loop = asyncio.get_event_loop()
         self.channel_db = ChannelDB(self)
-        self.interface = None
         self.path_finder = LNPathFinder(self.channel_db)
         self.tx_queue = tx_queue
 
@@ -159,14 +159,23 @@ def transport_pair(name1, name2):
     t2.other_mock_transport = t1
     return t1, t2
 
-class TestPeer(unittest.TestCase):
+class TestPeer(SequentialTestCase):
-    @staticmethod
+
-    def setUpClass():
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
         set_verbosity(True)
 
     def setUp(self):
+        super().setUp()
+        self.asyncio_loop, self._stop_loop, self._loop_thread = create_and_start_event_loop()
         self.alice_channel, self.bob_channel = create_test_channels()
 
+    def tearDown(self):
+        super().tearDown()
+        self.asyncio_loop.call_soon_threadsafe(self._stop_loop.set_result, 1)
+        self._loop_thread.join(timeout=1)
+
     def test_require_data_loss_protect(self):
         mock_lnworker = MockLNWorker(keypair(), keypair(), self.alice_channel, tx_queue=None)
         mock_transport = NoFeaturesTransport('')
@@ -232,8 +241,10 @@ class TestPeer(unittest.TestCase):
             self.assertEqual(await fut, 'Payment received')
             gath.cancel()
         gath = asyncio.gather(pay(), p1._message_loop(), p2._message_loop())
+        async def f():
+            await gath
         with self.assertRaises(asyncio.CancelledError):
-            run(gath)
+            run(f())
 
     def test_channel_usage_after_closing(self):
         p1, p2, w1, w2, q1, q2 = self.prepare_peers()
@@ -253,8 +264,10 @@ class TestPeer(unittest.TestCase):
         peer = w1.peers[route[0].node_id]
         # AssertionError is ok since we shouldn't use old routes, and the
         # route finding should fail when channel is closed
+        async def f():
+            await asyncio.gather(w1._pay_to_route(route, addr, pay_req), p1._message_loop(), p2._message_loop())
         with self.assertRaises(AssertionError):
-            run(asyncio.gather(w1._pay_to_route(route, addr, pay_req), p1._message_loop(), p2._message_loop()))
+            run(f())
 
 def run(coro):
-    return asyncio.get_event_loop().run_until_complete(coro)
+    return asyncio.run_coroutine_threadsafe(coro, loop=asyncio.get_event_loop()).result()

electrum/tests/test_lnrouter.py

@@ -3,7 +3,7 @@ import tempfile
 import shutil
 import asyncio
 
-from electrum.util import bh2u, bfh
+from electrum.util import bh2u, bfh, create_and_start_event_loop
 from electrum.lnonion import (OnionHopsDataSingle, new_onion_packet, OnionPerHop,
                               process_onion_packet, _decode_onion_error, decode_onion_error,
                               OnionFailureCode)
@@ -34,11 +34,20 @@ class Test_LNRouter(TestCaseForTestnet):
         cls.electrum_path = tempfile.mkdtemp()
         cls.config = SimpleConfig({'electrum_path': cls.electrum_path})
 
+    def setUp(self):
+        super().setUp()
+        self.asyncio_loop, self._stop_loop, self._loop_thread = create_and_start_event_loop()
+
     @classmethod
     def tearDownClass(cls):
         super().tearDownClass()
         shutil.rmtree(cls.electrum_path)
 
+    def tearDown(self):
+        super().tearDown()
+        self.asyncio_loop.call_soon_threadsafe(self._stop_loop.set_result, 1)
+        self._loop_thread.join(timeout=1)
+
     def test_find_path_for_payment(self):
         class fake_network:
             config = self.config