test: introduce script_util helper for creating P2PK scripts

test/functional/feature_taproot.py

@@ -76,6 +76,7 @@ from test_framework.script import (
     taproot_construct,
 )
 from test_framework.script_util import (
+    key_to_p2pk_script,
     key_to_p2wpkh_script,
     keyhash_to_p2pkh_script,
     script_to_p2sh_script,
@@ -1109,7 +1110,7 @@ def spenders_taproot_active():
             for witv0 in [False, True]:
                 for hashtype in VALID_SIGHASHES_ECDSA + [random.randrange(0x04, 0x80), random.randrange(0x84, 0x100)]:
                     standard = (hashtype in VALID_SIGHASHES_ECDSA) and (compressed or not witv0)
-                    add_spender(spenders, "legacy/pk-wrongkey", hashtype=hashtype, p2sh=p2sh, witv0=witv0, standard=standard, script=CScript([pubkey1, OP_CHECKSIG]), **SINGLE_SIG, key=eckey1, failure={"key": eckey2}, sigops_weight=4-3*witv0, **ERR_NO_SUCCESS)
+                    add_spender(spenders, "legacy/pk-wrongkey", hashtype=hashtype, p2sh=p2sh, witv0=witv0, standard=standard, script=key_to_p2pk_script(pubkey1), **SINGLE_SIG, key=eckey1, failure={"key": eckey2}, sigops_weight=4-3*witv0, **ERR_NO_SUCCESS)
                     add_spender(spenders, "legacy/pkh-sighashflip", hashtype=hashtype, p2sh=p2sh, witv0=witv0, standard=standard, pkh=pubkey1, key=eckey1, **SIGHASH_BITFLIP, sigops_weight=4-3*witv0, **ERR_NO_SUCCESS)
 
     # Verify that OP_CHECKSIGADD wasn't accidentally added to pre-taproot validation logic.