Merge bitcoin/bitcoin#21754: test: Run feature_cltv with MiniWallet

fa066f1b66ab75e6c88e11922bbd085c9d3211de test: Run feature_cltv with MiniWallet (MarcoFalke)
fa5591d38cfc917235a3dffd61c36dbf1f781a4d test: Hide tx rehash in helper (MarcoFalke)
fa5f938cfe4264054e9017fbe710c81e7b3bb150 test: Remove new_tx reference (MarcoFalke)

Pull request description:

  Allows to run the test even with no wallet compiled in

ACKs for top commit:
  theStack:
    ACK fa066f1b66ab75e6c88e11922bbd085c9d3211de 💽

Tree-SHA512: 3f659a178ba3ee0baffd70fddf8b8a68e5551d85626c7f254b234d7f75e6a16430a32a7952037db358b579f045b4d296b46156f72e5d226f3e80334dc635ca10

2 files changed, 27 insertions, 36 deletions

diff --git a/test/functional/feature_cltv.py b/test/functional/feature_cltv.py
index f2130fb588..6c51944d81 100755
--- a/test/functional/feature_cltv.py
+++ b/test/functional/feature_cltv.py
@@ -11,11 +11,9 @@ Test that the CHECKLOCKTIMEVERIFY soft-fork activates at (regtest) block height
 from test_framework.blocktools import (
     create_block,
     create_coinbase,
-    create_transaction,
 )
 from test_framework.messages import (
     CTransaction,
-    ToHex,
     msg_block,
 )
 from test_framework.p2p import P2PInterface
@@ -27,12 +25,8 @@ from test_framework.script import (
     OP_DROP,
 )
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import (
-    assert_equal,
-    hex_str_to_bytes,
-)
-
-from io import BytesIO
+from test_framework.util import assert_equal
+from test_framework.wallet import MiniWallet
 
 CLTV_HEIGHT = 1351
 
@@ -41,19 +35,14 @@ CLTV_HEIGHT = 1351
 # 1) prepending a given script to the scriptSig of vin 0 and
 # 2) (optionally) modify the nSequence of vin 0 and the tx's nLockTime
 def cltv_modify_tx(node, tx, prepend_scriptsig, nsequence=None, nlocktime=None):
+    assert_equal(len(tx.vin), 1)
     if nsequence is not None:
         tx.vin[0].nSequence = nsequence
         tx.nLockTime = nlocktime
 
-        # Need to re-sign, since nSequence and nLockTime changed
-        signed_result = node.signrawtransactionwithwallet(ToHex(tx))
-        new_tx = CTransaction()
-        new_tx.deserialize(BytesIO(hex_str_to_bytes(signed_result['hex'])))
-    else:
-        new_tx = tx
-
-    new_tx.vin[0].scriptSig = CScript(prepend_scriptsig + list(CScript(new_tx.vin[0].scriptSig)))
-    return new_tx
+    tx.vin[0].scriptSig = CScript(prepend_scriptsig + list(CScript(tx.vin[0].scriptSig)))
+    tx.rehash()
+    return tx
 
 
 def cltv_invalidate(node, tx, failure_reason):
@@ -98,9 +87,6 @@ class BIP65Test(BitcoinTestFramework):
         self.setup_clean_chain = True
         self.rpc_timeout = 480
 
-    def skip_test_if_missing_module(self):
-        self.skip_if_no_wallet()
-
     def test_cltv_info(self, *, is_active):
         assert_equal(self.nodes[0].getblockchaininfo()['softforks']['bip65'], {
                 "active": is_active,
@@ -111,22 +97,21 @@ class BIP65Test(BitcoinTestFramework):
 
     def run_test(self):
         peer = self.nodes[0].add_p2p_connection(P2PInterface())
+        wallet = MiniWallet(self.nodes[0], raw_script=True)
 
         self.test_cltv_info(is_active=False)
 
         self.log.info("Mining %d blocks", CLTV_HEIGHT - 2)
-        self.coinbase_txids = [self.nodes[0].getblock(b)['tx'][0] for b in self.nodes[0].generate(CLTV_HEIGHT - 2)]
-        self.nodeaddress = self.nodes[0].getnewaddress()
+        wallet.generate(10)
+        self.nodes[0].generate(CLTV_HEIGHT - 2 - 10)
 
         self.log.info("Test that invalid-according-to-CLTV transactions can still appear in a block")
 
         # create one invalid tx per CLTV failure reason (5 in total) and collect them
         invalid_ctlv_txs = []
         for i in range(5):
-            spendtx = create_transaction(self.nodes[0], self.coinbase_txids[i],
-                                         self.nodeaddress, amount=1.0)
+            spendtx = wallet.create_self_transfer(from_node=self.nodes[0])['tx']
             spendtx = cltv_invalidate(self.nodes[0], spendtx, i)
-            spendtx.rehash()
             invalid_ctlv_txs.append(spendtx)
 
         tip = self.nodes[0].getbestblockhash()
@@ -160,10 +145,8 @@ class BIP65Test(BitcoinTestFramework):
 
         # create and test one invalid tx per CLTV failure reason (5 in total)
         for i in range(5):
-            spendtx = create_transaction(self.nodes[0], self.coinbase_txids[10+i],
-                                         self.nodeaddress, amount=1.0)
+            spendtx = wallet.create_self_transfer(from_node=self.nodes[0])['tx']
             spendtx = cltv_invalidate(self.nodes[0], spendtx, i)
-            spendtx.rehash()
 
             expected_cltv_reject_reason = [
                 "non-mandatory-script-verify-flag (Operation not valid with the current stack size)",
@@ -197,7 +180,6 @@ class BIP65Test(BitcoinTestFramework):
 
         self.log.info("Test that a version 4 block with a valid-according-to-CLTV transaction is accepted")
         spendtx = cltv_validate(self.nodes[0], spendtx, CLTV_HEIGHT - 1)
-        spendtx.rehash()
 
         block.vtx.pop(1)
         block.vtx.append(spendtx)
diff --git a/test/functional/test_framework/wallet.py b/test/functional/test_framework/wallet.py
index 59ef18635b..395b50c4d8 100644
--- a/test/functional/test_framework/wallet.py
+++ b/test/functional/test_framework/wallet.py
@@ -17,6 +17,7 @@ from test_framework.messages import (
 from test_framework.script import (
     CScript,
     OP_TRUE,
+    OP_NOP,
 )
 from test_framework.util import (
     assert_equal,
@@ -26,11 +27,15 @@ from test_framework.util import (
 
 
 class MiniWallet:
-    def __init__(self, test_node):
+    def __init__(self, test_node, *, raw_script=False):
         self._test_node = test_node
         self._utxos = []
-        self._address = ADDRESS_BCRT1_P2WSH_OP_TRUE
-        self._scriptPubKey = hex_str_to_bytes(self._test_node.validateaddress(self._address)['scriptPubKey'])
+        if raw_script:
+            self._address = None
+            self._scriptPubKey = bytes(CScript([OP_TRUE]))
+        else:
+            self._address = ADDRESS_BCRT1_P2WSH_OP_TRUE
+            self._scriptPubKey = hex_str_to_bytes(self._test_node.validateaddress(self._address)['scriptPubKey'])
 
     def scan_blocks(self, *, start=1, num):
         """Scan the blocks for self._address outputs and add them to self._utxos"""
@@ -47,7 +52,7 @@ class MiniWallet:
 
     def generate(self, num_blocks):
         """Generate blocks with coinbase outputs to the internal address, and append the outputs to the internal list"""
-        blocks = self._test_node.generatetoaddress(num_blocks, self._address)
+        blocks = self._test_node.generatetodescriptor(num_blocks, f'raw({self._scriptPubKey.hex()})')
         for b in blocks:
             cb_tx = self._test_node.getblock(blockhash=b, verbosity=2)['tx'][0]
             self._utxos.append({'txid': cb_tx['txid'], 'vout': 0, 'value': cb_tx['vout'][0]['value']})
@@ -89,8 +94,12 @@ class MiniWallet:
         tx = CTransaction()
         tx.vin = [CTxIn(COutPoint(int(utxo_to_spend['txid'], 16), utxo_to_spend['vout']))]
         tx.vout = [CTxOut(int(send_value * COIN), self._scriptPubKey)]
-        tx.wit.vtxinwit = [CTxInWitness()]
-        tx.wit.vtxinwit[0].scriptWitness.stack = [CScript([OP_TRUE])]
+        if not self._address:
+            # raw script
+            tx.vin[0].scriptSig = CScript([OP_NOP] * 35)  # pad to identical size
+        else:
+            tx.wit.vtxinwit = [CTxInWitness()]
+            tx.wit.vtxinwit[0].scriptWitness.stack = [CScript([OP_TRUE])]
         tx_hex = tx.serialize().hex()
 
         tx_info = from_node.testmempoolaccept([tx_hex])[0]
@@ -98,7 +107,7 @@ class MiniWallet:
         if mempool_valid:
             assert_equal(tx_info['vsize'], vsize)
             assert_equal(tx_info['fees']['base'], fee)
-        return {'txid': tx_info['txid'], 'wtxid': tx_info['wtxid'], 'hex': tx_hex}
+        return {'txid': tx_info['txid'], 'wtxid': tx_info['wtxid'], 'hex': tx_hex, 'tx': tx}
 
     def sendrawtransaction(self, *, from_node, tx_hex):
         from_node.sendrawtransaction(tx_hex)