[qa] Ensure bitcoind processes are cleaned up when tests end

Github-Pull: #12904
Rebased-From: e36a0c08529bccc695ec71a7ec1df89367cc1628

1 files changed, 11 insertions, 0 deletions

diff --git a/test/functional/test_framework/test_node.py b/test/functional/test_framework/test_node.py
index 1054e6d028..19db11d8a3 100755
--- a/test/functional/test_framework/test_node.py
+++ b/test/functional/test_framework/test_node.py
@@ -70,9 +70,20 @@ class TestNode():
         self.rpc = None
         self.url = None
         self.log = logging.getLogger('TestFramework.node%d' % i)
+        self.cleanup_on_exit = True # Whether to kill the node when this object goes away
 
         self.p2ps = []
 
+    def __del__(self):
+        # Ensure that we don't leave any bitcoind processes lying around after
+        # the test ends
+        if self.process and self.cleanup_on_exit:
+            # Should only happen on test failure
+            # Avoid using logger, as that may have already been shutdown when
+            # this destructor is called.
+            print("Cleaning up leftover process")
+            self.process.kill()
+
     def __getattr__(self, name):
         """Dispatches any unrecognised messages to the RPC connection or a CLI instance."""
         if self.use_cli: