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-rw-r--r--test/functional/test_framework/script.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/test/functional/test_framework/script.py b/test/functional/test_framework/script.py
index f345bf02db..443cae86a1 100644
--- a/test/functional/test_framework/script.py
+++ b/test/functional/test_framework/script.py
@@ -597,6 +597,13 @@ class CScript(bytes):
lastOpcode = opcode
return n
+ def IsWitnessProgram(self):
+ """A witness program is any valid CScript that consists of a 1-byte
+ push opcode followed by a data push between 2 and 40 bytes."""
+ return ((4 <= len(self) <= 42) and
+ (self[0] == OP_0 or (OP_1 <= self[0] <= OP_16)) and
+ (self[1] + 2 == len(self)))
+
SIGHASH_DEFAULT = 0 # Taproot-only default, semantics same as SIGHASH_ALL
SIGHASH_ALL = 1