test: fix block tests of invalid_txs

test/functional/feature_block.py

@@ -153,6 +153,11 @@ class FullBlockTest(BitcoinTestFramework):
         for TxTemplate in invalid_txs.iter_all_templates():
             template = TxTemplate(spend_tx=attempt_spend_tx)
 
+            # belt-and-suspenders checking we won't pass up validating something
+            # we expect a disconnect from
+            if template.expect_disconnect:
+                assert not template.valid_in_block
+
             if template.valid_in_block:
                 continue