pytest: test that we reannounce node after restart.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

tests/test_gossip.py

@@ -842,6 +842,22 @@ def test_gossip_store_load(node_factory):
     assert not l1.daemon.is_in_log('gossip_store.*truncating')
 
 
+@pytest.mark.xfail(strict=True)
+def test_node_reannounce(node_factory, bitcoind):
+    "Test that we reannounce a node when parameters change"
+    l1, l2, l3 = node_factory.line_graph(3, opts={'may_reconnect': True})
+
+    bitcoind.generate_block(5)
+
+    wait_for(lambda: l3.rpc.listnodes(l1.info['id'])['nodes'] != [])
+    assert only_one(l3.rpc.listnodes(l1.info['id'])['nodes'])['alias'].startswith('JUNIORBEAM')
+
+    l1.stop()
+    l1.daemon.opts['alias'] = 'SENIORBEAM'
+    l1.start()
+    wait_for(lambda: only_one(l3.rpc.listnodes(l1.info['id'])['nodes'])['alias'] == 'SENIORBEAM')
+
+
 def test_gossipwith(node_factory):
     l1, l2 = node_factory.line_graph(2, announce=True)