From 2eb5175de87c798af328de3f2147aac7879eaa10 Mon Sep 17 00:00:00 2001 From: furszy Date: Wed, 27 Mar 2024 16:32:08 -0300 Subject: [PATCH] test: fix StopIteration exception in p2p_node_network_limited.py The `next()` call throws an exception if the default parameter is omitted and the iterator is exhausted. Fix it by providing a default value. The failure can be tested by commenting out lines 90 and 91 in the test (the `self.connect_nodes(2, 0)``). Since there is no connection, the node in question retrieves a single element in the 'getchaintips()' call. This scenario without the fix, aborts the test right away, throwing an StopIteration exception, and with the fix, the test properly waits until the timeout (wait_until() call). --- test/functional/p2p_node_network_limited.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/test/functional/p2p_node_network_limited.py b/test/functional/p2p_node_network_limited.py index 467bbad09cf..8f145b954a0 100755 --- a/test/functional/p2p_node_network_limited.py +++ b/test/functional/p2p_node_network_limited.py @@ -92,7 +92,8 @@ class NodeNetworkLimitedTest(BitcoinTestFramework): # Wait until the full_node is headers-wise sync best_block_hash = pruned_node.getbestblockhash() - self.wait_until(lambda: next(filter(lambda x: x['hash'] == best_block_hash, full_node.getchaintips()))['status'] == "headers-only") + default_value = {'status': ''} # No status + self.wait_until(lambda: next(filter(lambda x: x['hash'] == best_block_hash, full_node.getchaintips()), default_value)['status'] == "headers-only") # Now, since the node aims to download a window of 1024 blocks, # ensure it requests the blocks below the threshold only (with a