channeld: Add aggressive restart test

Changelog-None

contrib/pyln-client/pyln/client/lightning.py

@@ -1149,6 +1149,20 @@ def splice(self, script_or_json, dryrun=None, force_feerate=None, debug_log=None
         }
         return self.call("dev-splice", payload)
 
+    def stfu_channels(self, channel_ids):
+        """ STFU multiple channels """
+        payload = {
+            "channel_ids": channel_ids,
+        }
+        return self.call("stfu_channels", payload)
+
+    def abort_channels(self, channel_ids):
+        """ Abort multiple channels """
+        payload = {
+            "channel_ids": channel_ids,
+        }
+        return self.call("abort_channels", payload)
+
     def splice_init(self, chan_id, amount, initialpsbt=None, feerate_per_kw=None):
         """ Initiate a splice """
         payload = {

tests/test_restart.py

@@ -0,0 +1,21 @@
+from fixtures import *  # noqa: F401,F403
+import pytest
+import unittest
+from utils import (
+    TEST_NETWORK
+)
+
+
+@pytest.mark.openchannel('v1')
+@pytest.mark.openchannel('v2')
+@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
+def test_agressive_restart(node_factory, bitcoind):
+    l1, l2 = node_factory.line_graph(2, fundamount=1000000, wait_for_announce=True, opts={'experimental-splicing': None})
+
+    chan_id = l1.get_channel_id(l2)
+
+    for _ in range(20):
+        l1.rpc.stfu_channels([chan_id])
+        l1.rpc.abort_channels([chan_id])
+        l1.daemon.wait_for_log(r'peer_in WIRE_CHANNEL_REESTABLISH')
+        l2.daemon.wait_for_log(r'peer_in WIRE_CHANNEL_REESTABLISH')