Use importdescriptors when in descriptor wallet mode in wallet_createwallet.py

sethdseed and importmulti are not available for descriptor wallets, so
when doing descriptor wallet tests, use importdescriptors instead.

Also changes some output to match what descriptor wallets will return.

test/functional/wallet_createwallet.py

@@ -5,11 +5,15 @@
 """Test createwallet arguments.
 """
 
+from test_framework.address import key_to_p2wpkh
+from test_framework.descriptors import descsum_create
+from test_framework.key import ECKey
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
     assert_raises_rpc_error,
 )
+from test_framework.wallet_util import bytes_to_wif, generate_wif_key
 
 class CreateWalletTest(BitcoinTestFramework):
     def set_test_params(self):
@@ -35,10 +39,14 @@ class CreateWalletTest(BitcoinTestFramework):
         w1.importpubkey(w0.getaddressinfo(address1)['pubkey'])
 
         self.log.info('Test that private keys cannot be imported')
-        addr = w0.getnewaddress('', 'legacy')
-        privkey = w0.dumpprivkey(addr)
+        eckey = ECKey()
+        eckey.generate()
+        privkey = bytes_to_wif(eckey.get_bytes())
         assert_raises_rpc_error(-4, 'Cannot import private keys to a wallet with private keys disabled', w1.importprivkey, privkey)
-        result = w1.importmulti([{'scriptPubKey': {'address': addr}, 'timestamp': 'now', 'keys': [privkey]}])
+        if self.options.descriptors:
+            result = w1.importdescriptors([{'desc': descsum_create('wpkh(' + privkey + ')'), 'timestamp': 'now'}])
+        else:
+            result = w1.importmulti([{'scriptPubKey': {'address': key_to_p2wpkh(eckey.get_pubkey().get_bytes())}, 'timestamp': 'now', 'keys': [privkey]}])
         assert not result[0]['success']
         assert 'warning' not in result[0]
         assert_equal(result[0]['error']['code'], -4)
@@ -58,12 +66,25 @@ class CreateWalletTest(BitcoinTestFramework):
         assert_raises_rpc_error(-4, "Error: This wallet has no available keys", w3.getnewaddress)
         assert_raises_rpc_error(-4, "Error: This wallet has no available keys", w3.getrawchangeaddress)
         # Import private key
-        w3.importprivkey(w0.dumpprivkey(address1))
+        w3.importprivkey(generate_wif_key())
         # Imported private keys are currently ignored by the keypool
         assert_equal(w3.getwalletinfo()['keypoolsize'], 0)
         assert_raises_rpc_error(-4, "Error: This wallet has no available keys", w3.getnewaddress)
         # Set the seed
-        w3.sethdseed()
+        if self.options.descriptors:
+            w3.importdescriptors([{
+                'desc': descsum_create('wpkh(tprv8ZgxMBicQKsPcwuZGKp8TeWppSuLMiLe2d9PupB14QpPeQsqoj3LneJLhGHH13xESfvASyd4EFLJvLrG8b7DrLxEuV7hpF9uUc6XruKA1Wq/0h/*)'),
+                'timestamp': 'now',
+                'active': True
+            },
+            {
+                'desc': descsum_create('wpkh(tprv8ZgxMBicQKsPcwuZGKp8TeWppSuLMiLe2d9PupB14QpPeQsqoj3LneJLhGHH13xESfvASyd4EFLJvLrG8b7DrLxEuV7hpF9uUc6XruKA1Wq/1h/*)'),
+                'timestamp': 'now',
+                'active': True,
+                'internal': True
+            }])
+        else:
+            w3.sethdseed()
         assert_equal(w3.getwalletinfo()['keypoolsize'], 1)
         w3.getnewaddress()
         w3.getrawchangeaddress()
@@ -80,7 +101,20 @@ class CreateWalletTest(BitcoinTestFramework):
         assert_raises_rpc_error(-4, "Error: This wallet has no available keys", w4.getrawchangeaddress)
         # Now set a seed and it should work. Wallet should also be encrypted
         w4.walletpassphrase('pass', 60)
-        w4.sethdseed()
+        if self.options.descriptors:
+            w4.importdescriptors([{
+                'desc': descsum_create('wpkh(tprv8ZgxMBicQKsPcwuZGKp8TeWppSuLMiLe2d9PupB14QpPeQsqoj3LneJLhGHH13xESfvASyd4EFLJvLrG8b7DrLxEuV7hpF9uUc6XruKA1Wq/0h/*)'),
+                'timestamp': 'now',
+                'active': True
+            },
+            {
+                'desc': descsum_create('wpkh(tprv8ZgxMBicQKsPcwuZGKp8TeWppSuLMiLe2d9PupB14QpPeQsqoj3LneJLhGHH13xESfvASyd4EFLJvLrG8b7DrLxEuV7hpF9uUc6XruKA1Wq/1h/*)'),
+                'timestamp': 'now',
+                'active': True,
+                'internal': True
+            }])
+        else:
+            w4.sethdseed()
         w4.getnewaddress()
         w4.getrawchangeaddress()
 
@@ -111,13 +145,14 @@ class CreateWalletTest(BitcoinTestFramework):
         w6.walletpassphrase('thisisapassphrase', 60)
         w6.signmessage(w6.getnewaddress('', 'legacy'), "test")
         w6.keypoolrefill(1)
-        # There should only be 1 key
+        # There should only be 1 key for legacy, 3 for descriptors
         walletinfo = w6.getwalletinfo()
-        assert_equal(walletinfo['keypoolsize'], 1)
-        assert_equal(walletinfo['keypoolsize_hd_internal'], 1)
+        keys = 3 if self.options.descriptors else 1
+        assert_equal(walletinfo['keypoolsize'], keys)
+        assert_equal(walletinfo['keypoolsize_hd_internal'], keys)
         # Allow empty passphrase, but there should be a warning
         resp = self.nodes[0].createwallet(wallet_name='w7', disable_private_keys=False, blank=False, passphrase='')
-        assert_equal(resp['warning'], 'Empty string given as passphrase, wallet will not be encrypted.')
+        assert 'Empty string given as passphrase, wallet will not be encrypted.' in resp['warning']
         w7 = node.get_wallet_rpc('w7')
         assert_raises_rpc_error(-15, 'Error: running with an unencrypted wallet, but walletpassphrase was called.', w7.walletpassphrase, '', 60)