features: split expected feature bits into node/peer sets

The new `keysend` plugin modifies the node features that we send to
peers. This commit breaks out the 'expected_features' we use for tests
to encompass this differentiation.

Author: niftynei

tests/test_connection.py

@@ -6,7 +6,7 @@
 from pyln.client import RpcError, Millisatoshi
 from utils import (
     DEVELOPER, only_one, wait_for, sync_blockheight, VALGRIND, TIMEOUT,
-    SLOW_MACHINE, expected_features
+    SLOW_MACHINE, expected_peer_features, expected_node_features
 )
 from bitcoin.core import CMutableTransaction, CMutableTxOut
 
@@ -1558,7 +1558,8 @@ def test_forget_channel(node_factory):
 
 def test_peerinfo(node_factory, bitcoind):
     l1, l2 = node_factory.line_graph(2, fundchannel=False, opts={'may_reconnect': True})
-    lfeatures = expected_features()
+    lfeatures = expected_peer_features()
+    nfeatures = expected_node_features()
     # Gossiping but no node announcement yet
     assert l1.rpc.getpeer(l2.info['id'])['connected']
     assert len(l1.rpc.getpeer(l2.info['id'])['channels']) == 0
@@ -1576,11 +1577,11 @@ def test_peerinfo(node_factory, bitcoind):
     nodes2 = l2.rpc.listnodes(l2.info['id'])['nodes']
     peer1 = l1.rpc.getpeer(l2.info['id'])
     peer2 = l2.rpc.getpeer(l1.info['id'])
-    assert only_one(nodes1)['features'] == peer1['features']
-    assert only_one(nodes2)['features'] == peer2['features']
-
-    assert l1.rpc.getpeer(l2.info['id'])['features'] == lfeatures
-    assert l2.rpc.getpeer(l1.info['id'])['features'] == lfeatures
+    # peer features != to node features now because of keysend, which adds a node feature
+    assert only_one(nodes1)['features'] == nfeatures
+    assert only_one(nodes2)['features'] == nfeatures
+    assert peer1['features'] == lfeatures
+    assert peer2['features'] == lfeatures
 
     # If it reconnects after db load, it should know features.
     l1.restart()
@@ -1813,7 +1814,7 @@ def test_dataloss_protection(node_factory, bitcoind):
     l2 = node_factory.get_node(may_reconnect=True, options={'log-level': 'io'},
                                feerates=(7500, 7500, 7500, 7500), allow_broken_log=True)
 
-    lf = expected_features()
+    lf = expected_peer_features()
 
     l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
     # l1 should send out WIRE_INIT (0010)
@@ -2236,7 +2237,7 @@ def test_pay_disconnect_stress(node_factory, executor):
 
 
 def test_wumbo_channels(node_factory, bitcoind):
-    f = bytes.fromhex(expected_features())
+    f = bytes.fromhex(expected_peer_features())
 
     # OPT_LARGE_CHANNELS = 18 (19 for us). 0x080000
     f = (f[:-3] + bytes([f[-3] | 0x08]) + f[-2:]).hex()

tests/test_gossip.py

@@ -4,7 +4,7 @@
 from fixtures import TEST_NETWORK
 from pyln.client import RpcError
 from utils import (
-    wait_for, TIMEOUT, only_one, sync_blockheight, expected_features
+    wait_for, TIMEOUT, only_one, sync_blockheight, expected_node_features
 )
 
 import json
@@ -1029,7 +1029,7 @@ def test_node_reannounce(node_factory, bitcoind):
     wait_for(lambda: 'alias' in only_one(l2.rpc.listnodes(l1.info['id'])['nodes']))
     assert only_one(l2.rpc.listnodes(l1.info['id'])['nodes'])['alias'].startswith('JUNIORBEAM')
 
-    lfeatures = expected_features()
+    lfeatures = expected_node_features()
 
     # Make sure it gets features correct.
     assert only_one(l2.rpc.listnodes(l1.info['id'])['nodes'])['features'] == lfeatures

tests/test_plugin.py

@@ -6,7 +6,7 @@
 from pyln.proto import Invoice
 from utils import (
     DEVELOPER, only_one, sync_blockheight, TIMEOUT, wait_for, TEST_NETWORK,
-    DEPRECATED_APIS, expected_features
+    DEPRECATED_APIS, expected_peer_features, expected_node_features
 )
 
 import json
@@ -946,7 +946,7 @@ def test_plugin_feature_announce(node_factory):
     # Check the featurebits we've set in the `init` message from
     # feature-test.py. (1 << 101) results in 13 bytes featutebits (000d) and
     # has a leading 0x20.
-    assert l1.daemon.is_in_log(r'\[OUT\] 001000.*000d20{:0>24}'.format(expected_features()))
+    assert l1.daemon.is_in_log(r'\[OUT\] 001000.*000d20{:0>24}'.format(expected_peer_features()))
 
     # Check the invoice featurebit we set in feature-test.py
     inv = l1.rpc.invoice(123, 'lbl', 'desc')['bolt11']
@@ -1176,8 +1176,8 @@ def test_feature_set(node_factory):
     l1 = node_factory.get_node(options={"plugin": plugin})
 
     fs = l1.rpc.call('getfeatureset')
-    assert fs['init'] == expected_features()
-    assert fs['node'] == expected_features()
+    assert fs['init'] == expected_peer_features()
+    assert fs['node'] == expected_node_features()
     assert fs['channel'] == ''
     assert 'invoice' in fs
 

tests/utils.py

@@ -6,7 +6,15 @@
 COMPAT = env("COMPAT", "1") == "1"
 
 
-def expected_features():
-    """Return the expected features hexstring for this configuration"""
+def expected_peer_features():
+    """Return the expected peer features hexstring for this configuration"""
     # features 1, 3, 7, 9, 11, 13, 15 and 17 (0x02aaa2).
     return "02aaa2"
+
+
+# With the addition of the keysend plugin, we now send a different set of
+# features for the 'node' and the 'peer' feature sets
+def expected_node_features():
+    """Return the expected node features hexstring for this configuration"""
+    # features 1, 3, 7, 9, 11, 13, 15, 17 and 55 (0x8000000002aaa2).
+    return "8000000002aaa2"