coin_mvt: add integration tests for in-channel htlc movements

tests/utils.py

@@ -27,3 +27,37 @@ def expected_channel_features():
         return '80000000000000000000000000'
     else:
         return ''
+
+
+def check_coin_moves(n, account_id, expected_moves):
+    moves = n.rpc.call('listcoinmoves_plugin')['coin_moves']
+    node_id = n.info['id']
+    acct_moves = [m for m in moves if m['account_id'] == account_id]
+    assert len(acct_moves) == len(expected_moves)
+    for mv, exp in list(zip(acct_moves, expected_moves)):
+        assert mv['version'] == 1
+        assert mv['node_id'] == node_id
+        assert mv['type'] == exp['type']
+        assert mv['credit'] == "{}msat".format(exp['credit'])
+        assert mv['debit'] == "{}msat".format(exp['debit'])
+        assert mv['tag'] == exp['tag']
+        assert mv['timestamp'] > 0
+        assert mv['unit_of_account'] == 'btc'
+        # chain moves should have blockheights
+        if mv['type'] == 'chain_mvt':
+            assert mv['blockheight'] is not None
+
+
+def account_balance(n, account_id):
+    moves = n.rpc.call('listcoinmoves_plugin')['coin_moves']
+    chan_moves = [m for m in moves if m['account_id'] == account_id]
+    assert len(chan_moves) > 0
+    m_sum = 0
+    for m in chan_moves:
+        m_sum += int(m['credit'][:-4])
+        m_sum -= int(m['debit'][:-4])
+    return m_sum
+
+
+def first_channel_id(n1, n2):
+    return only_one(only_one(n1.rpc.listpeers(n2.info['id'])['peers'])['channels'])['channel_id']