tests: lnpeer: make debug htlc failure hooks more uniform

electrum/lnpeer.py

@@ -1509,7 +1509,7 @@ class Peer(Logger):
                         self.logger.info(f"error processing onion packet: {e!r}")
                         error_reason = OnionRoutingFailureMessage(code=OnionFailureCode.TEMPORARY_NODE_FAILURE, data=b'')
                     else:
-                        if self.lnworker._fail_htlcs_with_temp_node_failure:
+                        if self.network.config.get('test_fail_htlcs_with_temp_node_failure'):
                             error_reason = OnionRoutingFailureMessage(code=OnionFailureCode.TEMPORARY_NODE_FAILURE, data=b'')
                         elif processed_onion.are_we_final:
                             preimage, error_reason = self.maybe_fulfill_htlc(

electrum/lnworker.py

@@ -494,7 +494,6 @@ class LNWallet(LNWorker):
         # used in tests
         self.enable_htlc_settle = asyncio.Event()
         self.enable_htlc_settle.set()
-        self._fail_htlcs_with_temp_node_failure = False
 
         # note: accessing channels (besides simple lookup) needs self.lock!
         self._channels = {}  # type: Dict[bytes, Channel]

electrum/tests/test_lnpeer.py

@@ -118,7 +118,6 @@ class MockLNWallet(Logger, NetworkRetryManager[LNPeerAddr]):
         # used in tests
         self.enable_htlc_settle = asyncio.Event()
         self.enable_htlc_settle.set()
-        self._fail_htlcs_with_temp_node_failure = False
 
     def get_invoice_status(self, key):
         pass
@@ -543,8 +542,8 @@ class TestPeer(ElectrumTestCase):
     @needs_test_with_all_chacha20_implementations
     def test_payment_multihop_temp_node_failure(self):
         graph = self.prepare_chans_and_peers_in_square()
-        graph.w_b._fail_htlcs_with_temp_node_failure = True
-        graph.w_c._fail_htlcs_with_temp_node_failure = True
+        graph.w_b.network.config.set_key('test_fail_htlcs_with_temp_node_failure', True)
+        graph.w_c.network.config.set_key('test_fail_htlcs_with_temp_node_failure', True)
         peers = graph.all_peers()
         async def pay(pay_req):
             result, log = await graph.w_a._pay(pay_req)