qa: BitcoinTestFramework fails with extra_args=-nolisten #20177

The following code

#!/usr/bin/env python3

from test_framework.test_framework import BitcoinTestFramework


class NolistenTest(BitcoinTestFramework):
    def set_test_params(self):
        self.num_nodes = 1
        self.extra_args = [["-listen=0"]]  # Comment out to pass.

    def setup_network(self):
        self.setup_nodes()

    def run_test(self):
        self.log.info("Starting test!")


if __name__ == '__main__':
    NolistenTest().main()

returns

$ test/functional/feature_nolisten.py 
2020-10-17T17:52:20.992000Z TestFramework (INFO): Initializing test directory /tmp/bitcoin_func_test_qiov8cs8
2020-10-17T17:52:21.252000Z TestFramework (ERROR): Assertion failed
Traceback (most recent call last):
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 498, in start_nodes
    node.wait_for_rpc_connection()
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_node.py", line 220, in wait_for_rpc_connection
    raise FailedToStartError(self._node_msg(
test_framework.test_node.FailedToStartError: [node 0] bitcoind exited with status 1 during initialization

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 125, in main
    self.setup()
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 257, in setup
    self.setup_network()
  File "test/functional/feature_nolisten.py", line 15, in setup_network
    self.setup_nodes()
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 376, in setup_nodes
    self.start_nodes()
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 501, in start_nodes
    self.stop_nodes()
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 517, in stop_nodes
    node.stop_node(wait=wait)
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_node.py", line 319, in stop_node
    self.stop(wait=wait)
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_node.py", line 179, in __getattr__
    assert self.rpc_connected and self.rpc is not None, self._node_msg("Error: no RPC connection")
AssertionError: [node 0] Error: no RPC connection
2020-10-17T17:52:21.303000Z TestFramework (INFO): Stopping nodes
Traceback (most recent call last):
  File "test/functional/feature_nolisten.py", line 22, in <module>
    NolistenTest().main()
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 149, in main
    exit_code = self.shutdown()
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 273, in shutdown
    self.stop_nodes()
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_framework.py", line 517, in stop_nodes
    node.stop_node(wait=wait)
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_node.py", line 319, in stop_node
    self.stop(wait=wait)
  File "/home/hebasto/guix/GitHub/bitcoin/test/functional/test_framework/test_node.py", line 179, in __getattr__
    assert self.rpc_connected and self.rpc is not None, self._node_msg("Error: no RPC connection")
AssertionError: [node 0] Error: no RPC connection
[node 0] Cleaning up leftover process

What is the combined logs of /tmp/bitcoin_func_test_qiov8cs8?

The reason is bind=127.0.0.1 in the default bitcoin.conf:

Error: Cannot set -bind or -whitebind together with -listen=0

Is it possible to get non-listening node without replacing bitcoin.conf?

Is bind nullable? -nobind -nolisten?

It is nullable for me. Let me know if that didn't work.

@MarcoFalke

Is bind nullable? -nobind -nolisten?

Thanks! It works :+1: