test_lnpeer: use less side-effects

electrum/tests/test_lnpeer.py

@@ -180,23 +180,23 @@ def tearDown(self):
         self.asyncio_loop.call_soon_threadsafe(self._stop_loop.set_result, 1)
         self._loop_thread.join(timeout=1)
 
-    def prepare_peers(self):
+    def prepare_peers(self, alice_channel, bob_channel):
         k1, k2 = keypair(), keypair()
-        t1, t2 = transport_pair(self.alice_channel.name, self.bob_channel.name)
+        t1, t2 = transport_pair(alice_channel.name, bob_channel.name)
         q1, q2 = asyncio.Queue(), asyncio.Queue()
-        w1 = MockLNWallet(k1, k2, self.alice_channel, tx_queue=q1)
-        w2 = MockLNWallet(k2, k1, self.bob_channel, tx_queue=q2)
+        w1 = MockLNWallet(k1, k2, alice_channel, tx_queue=q1)
+        w2 = MockLNWallet(k2, k1, bob_channel, tx_queue=q2)
         p1 = Peer(w1, k1.pubkey, t1)
         p2 = Peer(w2, k2.pubkey, t2)
         w1.peer = p1
         w2.peer = p2
         # mark_open won't work if state is already OPEN.
         # so set it to FUNDED
-        self.alice_channel._state = channel_states.FUNDED
-        self.bob_channel._state = channel_states.FUNDED
+        alice_channel._state = channel_states.FUNDED
+        bob_channel._state = channel_states.FUNDED
         # this populates the channel graph:
-        p1.mark_open(self.alice_channel)
-        p2.mark_open(self.bob_channel)
+        p1.mark_open(alice_channel)
+        p2.mark_open(bob_channel)
         return p1, p2, w1, w2, q1, q2
 
     @staticmethod
@@ -218,14 +218,14 @@ def prepare_invoice(w2 # receiver
         return lnencode(lnaddr, w2.node_keypair.privkey)
 
     def test_reestablish(self):
-        self.alice_channel, self.bob_channel = create_test_channels()
-        p1, p2, w1, w2, _q1, _q2 = self.prepare_peers()
+        alice_channel, bob_channel = create_test_channels()
+        p1, p2, w1, w2, _q1, _q2 = self.prepare_peers(alice_channel, bob_channel)
         async def reestablish():
             await asyncio.gather(
-                p1.reestablish_channel(self.alice_channel),
-                p2.reestablish_channel(self.bob_channel))
-            self.assertEqual(self.alice_channel.peer_state, peer_states.GOOD)
-            self.assertEqual(self.bob_channel.peer_state, peer_states.GOOD)
+                p1.reestablish_channel(alice_channel),
+                p2.reestablish_channel(bob_channel))
+            self.assertEqual(alice_channel.peer_state, peer_states.GOOD)
+            self.assertEqual(bob_channel.peer_state, peer_states.GOOD)
             gath.cancel()
         gath = asyncio.gather(reestablish(), p1._message_loop(), p2._message_loop())
         async def f():
@@ -234,19 +234,19 @@ async def f():
             run(f())
 
     def test_reestablish_with_old_state(self):
-        self.alice_channel, self.bob_channel = create_test_channels()
-        self.alice_channel_0, self.bob_channel_0 = create_test_channels() # these are identical
-        p1, p2, w1, w2, _q1, _q2 = self.prepare_peers()
+        alice_channel, bob_channel = create_test_channels()
+        alice_channel_0, bob_channel_0 = create_test_channels() # these are identical
+        p1, p2, w1, w2, _q1, _q2 = self.prepare_peers(alice_channel, bob_channel)
         pay_req = self.prepare_invoice(w2)
         async def reestablish():
             result = await LNWallet._pay(w1, pay_req)
             self.assertEqual(result, True)
-            w1.channels = {self.alice_channel_0.channel_id: self.alice_channel_0}
+            w1.channels = {alice_channel_0.channel_id: alice_channel_0}
             await asyncio.gather(
-                p1.reestablish_channel(self.alice_channel_0),
-                p2.reestablish_channel(self.bob_channel))
-            self.assertEqual(self.alice_channel_0.peer_state, peer_states.BAD)
-            self.assertEqual(self.bob_channel._state, channel_states.FORCE_CLOSING)
+                p1.reestablish_channel(alice_channel_0),
+                p2.reestablish_channel(bob_channel))
+            self.assertEqual(alice_channel_0.peer_state, peer_states.BAD)
+            self.assertEqual(bob_channel._state, channel_states.FORCE_CLOSING)
             # wait so that pending messages are processed
             #await asyncio.sleep(1)
             gath.cancel()
@@ -257,8 +257,8 @@ async def f():
             run(f())
 
     def test_payment(self):
-        self.alice_channel, self.bob_channel = create_test_channels()
-        p1, p2, w1, w2, _q1, _q2 = self.prepare_peers()
+        alice_channel, bob_channel = create_test_channels()
+        p1, p2, w1, w2, _q1, _q2 = self.prepare_peers(alice_channel, bob_channel)
         pay_req = self.prepare_invoice(w2)
         async def pay():
             result = await LNWallet._pay(w1, pay_req)
@@ -271,14 +271,14 @@ async def f():
             run(f())
 
     def test_channel_usage_after_closing(self):
-        self.alice_channel, self.bob_channel = create_test_channels()
-        p1, p2, w1, w2, q1, q2 = self.prepare_peers()
+        alice_channel, bob_channel = create_test_channels()
+        p1, p2, w1, w2, q1, q2 = self.prepare_peers(alice_channel, bob_channel)
         pay_req = self.prepare_invoice(w2)
 
         addr = w1._check_invoice(pay_req)
         route = run(w1._create_route_from_invoice(decoded_invoice=addr))
 
-        run(w1.force_close_channel(self.alice_channel.channel_id))
+        run(w1.force_close_channel(alice_channel.channel_id))
         # check if a tx (commitment transaction) was broadcasted:
         assert q1.qsize() == 1