Adapt test framework to Palladium consensus rules

test/functional/test_framework/util.py

@@ -22,6 +22,9 @@ from io import BytesIO
 
 logger = logging.getLogger("TestFramework.utils")
 
+# Palladium consensus parameters for functional tests.
+COINBASE_MATURITY = 120
+
 # Assert functions
 ##################
 
@@ -501,7 +504,7 @@ def random_transaction(nodes, amount, min_fee, fee_increment, fee_variants):
 # Helper to create at least "count" utxos
 # Pass in a fee that is sufficient for relay and mining new transactions.
 def create_confirmed_utxos(fee, node, count):
-    to_generate = int(0.5 * count) + 101
+    to_generate = int(0.5 * count) + COINBASE_MATURITY + 1
     while to_generate > 0:
         node.generate(min(25, to_generate))
         to_generate -= 25