test: add blocks_key_path

Adds a convenience function to TestNode
to provide the path to the blocks xor key.
Updates util and feature_blocksxor to use it.

2 files changed, 5 insertions, 1 deletions

diff --git a/test/functional/test_framework/test_node.py b/test/functional/test_framework/test_node.py
index b73566b0e9..9e037345f3 100755
--- a/test/functional/test_framework/test_node.py
+++ b/test/functional/test_framework/test_node.py
@@ -466,6 +466,10 @@ class TestNode():
         return self.chain_path / "blocks"
 
     @property
+    def blocks_key_path(self) -> Path:
+        return self.blocks_path / "xor.dat"
+
+    @property
     def wallets_path(self) -> Path:
         return self.chain_path / "wallets"
 
diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py
index c3bc861cf6..2372683c04 100644
--- a/test/functional/test_framework/util.py
+++ b/test/functional/test_framework/util.py
@@ -516,7 +516,7 @@ def check_node_connections(*, node, num_in, num_out):
 
 
 def read_xor_key(*, node):
-    with open(node.blocks_path / "xor.dat", "rb") as xor_f:
+    with open(node.blocks_key_path, "rb") as xor_f:
         NUM_XOR_BYTES = 8 # From InitBlocksdirXorKey::xor_key.size()
         return xor_f.read(NUM_XOR_BYTES)