message: test: introduce helper to create random P2WPKH scriptPubKeys
diff: @@ -28,6 +28,7 @@ from test_framework.script import (
  OP_NOP,
  SIGHASH_ALL,
  )
  +from test_framework.script_util import key_to_p2wpkh_script
  from test_framework.util import (
  assert_equal,
  assert_greater_than_or_equal,
  @@ -207,6 +208,14 @@ class MiniWallet:
  return txid
  +def random_p2wpkh():
  + """Generate a random P2WPKH scriptPubKey. Can be used when a random destination is needed,
  + but no compiled wallet is available (e.g. as replacement to the getnewaddress RPC)."""
  + key = ECKey()
  + key.generate()
  + return key_to_p2wpkh_script(key.get_pubkey().get_bytes())
  +
  +
  def make_chain(node, address, privkeys, parent_txid, parent_value, n=0, parent_locking_script=None, fee=DEFAULT_FEE):
  """Build a transaction that spends parent_txid.vout[n] and produces one output with
  amount = parent_value with a fee deducted.
  