Merge #18255: test: Add bad-txns-*-toolarge test cases to invalid_txs

faae5a9a356d821f0cbdea32030b0ce356351a1d test: Add bad-txns-*-toolarge test cases to invalid_txs (MarcoFalke)

Pull request description:

ACKs for top commit:
  laanwj:
    ACK faae5a9a356d821f0cbdea32030b0ce356351a1d

Tree-SHA512: 93962de02104de220cc76f3759e7276423668bbd7f2b5c32e256ece2daf55501d72804bb9eb009a5d7b3a6631c88859cf6cc3e51da19dddf73b4e7df6e8c4ce4

3 files changed, 31 insertions, 5 deletions

diff --git a/test/functional/data/invalid_txs.py b/test/functional/data/invalid_txs.py
index 99c88bbcc0..ce14998fd1 100644
--- a/test/functional/data/invalid_txs.py
+++ b/test/functional/data/invalid_txs.py
@@ -21,7 +21,13 @@ Invalid tx cases not covered here can be found by running:
 """
 import abc
 
-from test_framework.messages import CTransaction, CTxIn, CTxOut, COutPoint
+from test_framework.messages import (
+    COutPoint,
+    CTransaction,
+    CTxIn,
+    CTxOut,
+    MAX_MONEY,
+)
 from test_framework import script as sc
 from test_framework.blocktools import create_tx_with_script, MAX_BLOCK_SIGOPS
 from test_framework.script import (
@@ -166,7 +172,7 @@ class SpendTooMuch(BadTxTemplate):
             self.spend_tx, 0, script_pub_key=basic_p2sh, amount=(self.spend_avail + 1))
 
 
-class SpendNegative(BadTxTemplate):
+class CreateNegative(BadTxTemplate):
     reject_reason = 'bad-txns-vout-negative'
     expect_disconnect = True
 
@@ -174,6 +180,25 @@ class SpendNegative(BadTxTemplate):
         return create_tx_with_script(self.spend_tx, 0, amount=-1)
 
 
+class CreateTooLarge(BadTxTemplate):
+    reject_reason = 'bad-txns-vout-toolarge'
+    expect_disconnect = True
+
+    def get_tx(self):
+        return create_tx_with_script(self.spend_tx, 0, amount=MAX_MONEY + 1)
+
+
+class CreateSumTooLarge(BadTxTemplate):
+    reject_reason = 'bad-txns-txouttotal-toolarge'
+    expect_disconnect = True
+
+    def get_tx(self):
+        tx = create_tx_with_script(self.spend_tx, 0, amount=MAX_MONEY)
+        tx.vout = [tx.vout[0]] * 2
+        tx.calc_sha256()
+        return tx
+
+
 class InvalidOPIFConstruction(BadTxTemplate):
     reject_reason = "mandatory-script-verify-flag-failed (Invalid OP_IF construction)"
     expect_disconnect = True
@@ -237,4 +262,3 @@ DisabledOpcodeTemplates = [getDisabledOpcodeTemplate(opcode) for opcode in [
 def iter_all_templates():
     """Iterate through all bad transaction template types."""
     return BadTxTemplate.__subclasses__()
-
diff --git a/test/functional/mempool_accept.py b/test/functional/mempool_accept.py
index 900cabccda..9ade22a7eb 100755
--- a/test/functional/mempool_accept.py
+++ b/test/functional/mempool_accept.py
@@ -16,6 +16,7 @@ from test_framework.messages import (
     CTransaction,
     CTxOut,
     MAX_BLOCK_BASE_SIZE,
+    MAX_MONEY,
 )
 from test_framework.script import (
     hash160,
@@ -220,7 +221,7 @@ class MempoolAcceptanceTest(BitcoinTestFramework):
         # The following two validations prevent overflow of the output amounts (see CVE-2010-5139).
         self.log.info('A transaction with too large output value')
         tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
-        tx.vout[0].nValue = 21000000 * COIN + 1
+        tx.vout[0].nValue = MAX_MONEY + 1
         self.check_mempool_result(
             result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': 'bad-txns-vout-toolarge'}],
             rawtxs=[tx.serialize().hex()],
@@ -229,7 +230,7 @@ class MempoolAcceptanceTest(BitcoinTestFramework):
         self.log.info('A transaction with too large sum of output values')
         tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
         tx.vout = [tx.vout[0]] * 2
-        tx.vout[0].nValue = 21000000 * COIN
+        tx.vout[0].nValue = MAX_MONEY
         self.check_mempool_result(
             result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': 'bad-txns-txouttotal-toolarge'}],
             rawtxs=[tx.serialize().hex()],
diff --git a/test/functional/test_framework/messages.py b/test/functional/test_framework/messages.py
index 4f7a9a8b13..285a3fbbf4 100755
--- a/test/functional/test_framework/messages.py
+++ b/test/functional/test_framework/messages.py
@@ -39,6 +39,7 @@ MAX_LOCATOR_SZ = 101
 MAX_BLOCK_BASE_SIZE = 1000000
 
 COIN = 100000000  # 1 btc in satoshis
+MAX_MONEY = 21000000 * COIN
 
 BIP125_SEQUENCE_NUMBER = 0xfffffffd  # Sequence number that is BIP 125 opt-in and BIP 68-opt-out