test: Check datadir cleanup after assumeutxo was successful

Author: fjahr

test/functional/feature_assumeutxo.py

@@ -644,7 +644,11 @@ def check_tx_counts(final: bool) -> None:
         for i in (0, 1):
             n = self.nodes[i]
             self.log.info(f"Restarting node {i} to ensure (Check|Load)BlockIndex passes")
-            self.restart_node(i, extra_args=self.extra_args[i])
+            # Ensure the assumutxo node has cleaned up the background chainstate
+            cleanup_msg = ["cleaning up unneeded background chainstate"] if i != 0 else []
+            with n.assert_debug_log(cleanup_msg):
+                self.restart_node(i, extra_args=self.extra_args[i])
+            assert not (n.datadir_path / "regtest" / "chainstate_snapshot").exists()
 
             assert_equal(n.getblockchaininfo()["blocks"], FINAL_HEIGHT)
 
@@ -721,7 +725,11 @@ def check_tx_counts(final: bool) -> None:
         for i in (0, 2):
             n = self.nodes[i]
             self.log.info(f"Restarting node {i} to ensure (Check|Load)BlockIndex passes")
-            self.restart_node(i, extra_args=self.extra_args[i])
+            # Ensure the assumeutxo node has cleaned up the background chainstate
+            cleanup_msg = ["cleaning up unneeded background chainstate"] if i != 0 else []
+            with n.assert_debug_log(cleanup_msg):
+                self.restart_node(i, extra_args=self.extra_args[i])
+            assert not (n.datadir_path / "regtest" / "chainstate_snapshot").exists()
 
             assert_equal(n.getblockchaininfo()["blocks"], FINAL_HEIGHT)