Merge bitcoin/bitcoin#26723: test: call keypoolrefill with priv key disabled should throw an error

ec63a48 test: call `keypoolrefill` with private keys disabled should throw an error (brunoerg)

Pull request description:

  This PR adds test coverage for the following error:
  https://github.com/bitcoin/bitcoin/blob/cb32328d1b80d0ccd6eb9532bd8fe4e0a4de385e/src/wallet/rpc/addresses.cpp#L332-L334

ACKs for top commit:
  aureleoules:
    ACK ec63a48

Tree-SHA512: b5deda8981ff472f290e6e16c8723a58e02cbe099afd1f672c099f4add0a1d9b192b11a2c3f0e11b96794671f6b9efa75812b7a174248d7c58d7fd7d3310e7b9

Author: MarcoFalke

test/functional/wallet_keypool.py

@@ -204,6 +204,9 @@ def run_test(self):
         res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00010000}], options={"subtractFeeFromOutputs": [0], "feeRate": 0.00010, "changeAddress": addr.pop()})
         assert_equal("psbt" in res, True)
 
+        if not self.options.descriptors:
+            msg = "Error: Private keys are disabled for this wallet"
+            assert_raises_rpc_error(-4, msg, w2.keypoolrefill, 100)
 
 if __name__ == '__main__':
     KeyPoolTest().main()