test: Use generate* node RPC, not wallet RPC

Author: MarcoFalke

test/functional/wallet_descriptor.py

@@ -84,7 +84,7 @@ def run_test(self):
         send_wrpc = self.nodes[0].get_wallet_rpc("desc1")
 
         # Generate some coins
-        self.generatetoaddress(send_wrpc, COINBASE_MATURITY + 1, send_wrpc.getnewaddress())
+        self.generatetoaddress(self.nodes[0], COINBASE_MATURITY + 1, send_wrpc.getnewaddress())
 
         # Make transactions
         self.log.info("Test sending and receiving")

test/functional/wallet_importdescriptors.py

@@ -74,7 +74,7 @@ def run_test(self):
         assert_equal(wpriv.getwalletinfo()['keypoolsize'], 0)
 
         self.log.info('Mining coins')
-        self.generatetoaddress(w0, COINBASE_MATURITY + 1, w0.getnewaddress())
+        self.generatetoaddress(self.nodes[0], COINBASE_MATURITY + 1, w0.getnewaddress())
 
         # RPC importdescriptors -----------------------------------------------
 
@@ -405,7 +405,7 @@ def run_test(self):
                      solvable=True,
                      ismine=True)
         txid = w0.sendtoaddress(address, 49.99995540)
-        self.generatetoaddress(w0, 6, w0.getnewaddress())
+        self.generatetoaddress(self.nodes[0], 6, w0.getnewaddress())
         self.sync_blocks()
         tx = wpriv.createrawtransaction([{"txid": txid, "vout": 0}], {w0.getnewaddress(): 49.999})
         signed_tx = wpriv.signrawtransactionwithwallet(tx)