From 9938f4438dce6700afd58d33af9dc5ed65a2f4d0 Mon Sep 17 00:00:00 2001
From: Kittywhiskers Van Gogh <63189531+kwvg@users.noreply.github.com>
Date: Mon, 26 Jul 2021 00:26:55 +0200
Subject: [PATCH] partial bitcoin#22550: improve `test_signing_with_{csv,cltv}`
 subtests

partial:
- 746f203f (only changes in test_framework/util.py)
---
 test/functional/test_framework/util.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py
index 3577e98a20..f2c9448f8e 100644
--- a/test/functional/test_framework/util.py
+++ b/test/functional/test_framework/util.py
@@ -624,6 +624,17 @@ def mine_large_block(node, utxos=None):
     node.generate(1)
 
 
+def generate_to_height(node, target_height):
+    """Generates blocks until a given target block height has been reached.
+       To prevent timeouts, only up to 200 blocks are generated per RPC call.
+       Can be used to activate certain soft-forks (e.g. CSV, CLTV)."""
+    current_height = node.getblockcount()
+    while current_height < target_height:
+        nblocks = min(200, target_height - current_height)
+        current_height += len(node.generate(nblocks))
+    assert_equal(node.getblockcount(), target_height)
+
+
 def find_vout_for_address(node, txid, addr):
     """
     Locate the vout index of the given transaction sending to the