From a90c200fcbe8cbbe97cde8a255baf30ce7403d11 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Thu, 27 Sep 2018 15:03:27 +0930
Subject: [PATCH] pytest: wait_channel_quiescent helper to wait for resolved
 htlcs.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 tests/utils.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tests/utils.py b/tests/utils.py
index 24a36c0f3..011c1ca9a 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -70,6 +70,11 @@ def sync_blockheight(bitcoind, nodes):
         wait_for(lambda: n.rpc.getinfo()['blockheight'] == height)
 
 
+def wait_channel_quiescent(n1, n2):
+    wait_for(lambda: only_one(only_one(n1.rpc.listpeers(n2.info['id'])['peers'])['channels'])['htlcs'] == [])
+    wait_for(lambda: only_one(only_one(n2.rpc.listpeers(n1.info['id'])['peers'])['channels'])['htlcs'] == [])
+
+
 class TailableProc(object):
     """A monitorable process that we can start, stop and tail.