tests: Test for gethdkeys

2 files changed, 186 insertions, 0 deletions

diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py
index e438a60edc..1f6bb32e0a 100755
--- a/test/functional/test_runner.py
+++ b/test/functional/test_runner.py
@@ -181,6 +181,7 @@ BASE_SCRIPTS = [
     'wallet_keypool_topup.py --legacy-wallet',
     'wallet_keypool_topup.py --descriptors',
     'wallet_fast_rescan.py --descriptors',
+    'wallet_gethdkeys.py --descriptors',
     'interface_zmq.py',
     'rpc_invalid_address_message.py',
     'rpc_validateaddress.py',
diff --git a/test/functional/wallet_gethdkeys.py b/test/functional/wallet_gethdkeys.py
new file mode 100755
index 0000000000..f09b8c875a
--- /dev/null
+++ b/test/functional/wallet_gethdkeys.py
@@ -0,0 +1,185 @@
+#!/usr/bin/env python3
+# Copyright (c) 2023 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+"""Test wallet gethdkeys RPC."""
+
+from test_framework.descriptors import descsum_create
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import (
+    assert_equal,
+    assert_raises_rpc_error,
+)
+from test_framework.wallet_util import WalletUnlock
+
+
+class WalletGetHDKeyTest(BitcoinTestFramework):
+    def add_options(self, parser):
+        self.add_wallet_options(parser, descriptors=True, legacy=False)
+
+    def set_test_params(self):
+        self.setup_clean_chain = True
+        self.num_nodes = 1
+
+    def skip_test_if_missing_module(self):
+        self.skip_if_no_wallet()
+
+    def run_test(self):
+        self.test_basic_gethdkeys()
+        self.test_ranged_imports()
+        self.test_lone_key_imports()
+        self.test_ranged_multisig()
+        self.test_mixed_multisig()
+
+    def test_basic_gethdkeys(self):
+        self.log.info("Test gethdkeys basics")
+        self.nodes[0].createwallet("basic")
+        wallet = self.nodes[0].get_wallet_rpc("basic")
+        xpub_info = wallet.gethdkeys()
+        assert_equal(len(xpub_info), 1)
+        assert_equal(xpub_info[0]["has_private"], True)
+
+        assert "xprv" not in xpub_info[0]
+        xpub = xpub_info[0]["xpub"]
+
+        xpub_info = wallet.gethdkeys(private=True)
+        xprv = xpub_info[0]["xprv"]
+        assert_equal(xpub_info[0]["xpub"], xpub)
+        assert_equal(xpub_info[0]["has_private"], True)
+
+        descs = wallet.listdescriptors(True)
+        for desc in descs["descriptors"]:
+            assert xprv in desc["desc"]
+
+        self.log.info("HD pubkey can be retrieved from encrypted wallets")
+        prev_xprv = xprv
+        wallet.encryptwallet("pass")
+        # HD key is rotated on encryption, there should now be 2 HD keys
+        assert_equal(len(wallet.gethdkeys()), 2)
+        # New key is active, should be able to get only that one and its descriptors
+        xpub_info = wallet.gethdkeys(active_only=True)
+        assert_equal(len(xpub_info), 1)
+        assert xpub_info[0]["xpub"] != xpub
+        assert "xprv" not in xpub_info[0]
+        assert_equal(xpub_info[0]["has_private"], True)
+
+        self.log.info("HD privkey can be retrieved from encrypted wallets")
+        assert_raises_rpc_error(-13, "Error: Please enter the wallet passphrase with walletpassphrase first", wallet.gethdkeys, private=True)
+        with WalletUnlock(wallet, "pass"):
+            xpub_info = wallet.gethdkeys(active_only=True, private=True)[0]
+            assert xpub_info["xprv"] != xprv
+            for desc in wallet.listdescriptors(True)["descriptors"]:
+                if desc["active"]:
+                    # After encrypting, HD key was rotated and should appear in all active descriptors
+                    assert xpub_info["xprv"] in desc["desc"]
+                else:
+                    # Inactive descriptors should have the previous HD key
+                    assert prev_xprv in desc["desc"]
+
+    def test_ranged_imports(self):
+        self.log.info("Keys of imported ranged descriptors appear in gethdkeys")
+        def_wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
+        self.nodes[0].createwallet("imports")
+        wallet = self.nodes[0].get_wallet_rpc("imports")
+
+        xpub_info = wallet.gethdkeys()
+        assert_equal(len(xpub_info), 1)
+        active_xpub = xpub_info[0]["xpub"]
+
+        import_xpub = def_wallet.gethdkeys(active_only=True)[0]["xpub"]
+        desc_import = def_wallet.listdescriptors(True)["descriptors"]
+        for desc in desc_import:
+            desc["active"] = False
+        wallet.importdescriptors(desc_import)
+        assert_equal(wallet.gethdkeys(active_only=True), xpub_info)
+
+        xpub_info = wallet.gethdkeys()
+        assert_equal(len(xpub_info), 2)
+        for x in xpub_info:
+            if x["xpub"] == active_xpub:
+                for desc in x["descriptors"]:
+                    assert_equal(desc["active"], True)
+            elif x["xpub"] == import_xpub:
+                for desc in x["descriptors"]:
+                    assert_equal(desc["active"], False)
+            else:
+                assert False
+
+
+    def test_lone_key_imports(self):
+        self.log.info("Non-HD keys do not appear in gethdkeys")
+        self.nodes[0].createwallet("lonekey", blank=True)
+        wallet = self.nodes[0].get_wallet_rpc("lonekey")
+
+        assert_equal(wallet.gethdkeys(), [])
+        wallet.importdescriptors([{"desc": descsum_create("wpkh(cTe1f5rdT8A8DFgVWTjyPwACsDPJM9ff4QngFxUixCSvvbg1x6sh)"), "timestamp": "now"}])
+        assert_equal(wallet.gethdkeys(), [])
+
+        self.log.info("HD keys of non-ranged descriptors should appear in gethdkeys")
+        def_wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
+        xpub_info = def_wallet.gethdkeys(private=True)
+        xpub = xpub_info[0]["xpub"]
+        xprv = xpub_info[0]["xprv"]
+        prv_desc = descsum_create(f"wpkh({xprv})")
+        pub_desc = descsum_create(f"wpkh({xpub})")
+        assert_equal(wallet.importdescriptors([{"desc": prv_desc, "timestamp": "now"}])[0]["success"], True)
+        xpub_info = wallet.gethdkeys()
+        assert_equal(len(xpub_info), 1)
+        assert_equal(xpub_info[0]["xpub"], xpub)
+        assert_equal(len(xpub_info[0]["descriptors"]), 1)
+        assert_equal(xpub_info[0]["descriptors"][0]["desc"], pub_desc)
+        assert_equal(xpub_info[0]["descriptors"][0]["active"], False)
+
+    def test_ranged_multisig(self):
+        self.log.info("HD keys of a multisig appear in gethdkeys")
+        def_wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
+        self.nodes[0].createwallet("ranged_multisig")
+        wallet = self.nodes[0].get_wallet_rpc("ranged_multisig")
+
+        xpub1 = wallet.gethdkeys()[0]["xpub"]
+        xprv1 = wallet.gethdkeys(private=True)[0]["xprv"]
+        xpub2 = def_wallet.gethdkeys()[0]["xpub"]
+
+        prv_multi_desc = descsum_create(f"wsh(multi(2,{xprv1}/*,{xpub2}/*))")
+        pub_multi_desc = descsum_create(f"wsh(multi(2,{xpub1}/*,{xpub2}/*))")
+        assert_equal(wallet.importdescriptors([{"desc": prv_multi_desc, "timestamp": "now"}])[0]["success"], True)
+
+        xpub_info = wallet.gethdkeys()
+        assert_equal(len(xpub_info), 2)
+        for x in xpub_info:
+            if x["xpub"] == xpub1:
+                found_desc = next((d for d in xpub_info[0]["descriptors"] if d["desc"] == pub_multi_desc), None)
+                assert found_desc is not None
+                assert_equal(found_desc["active"], False)
+            elif x["xpub"] == xpub2:
+                assert_equal(len(x["descriptors"]), 1)
+                assert_equal(x["descriptors"][0]["desc"], pub_multi_desc)
+                assert_equal(x["descriptors"][0]["active"], False)
+            else:
+                assert False
+
+    def test_mixed_multisig(self):
+        self.log.info("Non-HD keys of a multisig do not appear in gethdkeys")
+        def_wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
+        self.nodes[0].createwallet("single_multisig")
+        wallet = self.nodes[0].get_wallet_rpc("single_multisig")
+
+        xpub = wallet.gethdkeys()[0]["xpub"]
+        xprv = wallet.gethdkeys(private=True)[0]["xprv"]
+        pub = def_wallet.getaddressinfo(def_wallet.getnewaddress())["pubkey"]
+
+        prv_multi_desc = descsum_create(f"wsh(multi(2,{xprv},{pub}))")
+        pub_multi_desc = descsum_create(f"wsh(multi(2,{xpub},{pub}))")
+        import_res = wallet.importdescriptors([{"desc": prv_multi_desc, "timestamp": "now"}])
+        assert_equal(import_res[0]["success"], True)
+
+        xpub_info = wallet.gethdkeys()
+        assert_equal(len(xpub_info), 1)
+        assert_equal(xpub_info[0]["xpub"], xpub)
+        found_desc = next((d for d in xpub_info[0]["descriptors"] if d["desc"] == pub_multi_desc), None)
+        assert found_desc is not None
+        assert_equal(found_desc["active"], False)
+
+
+if __name__ == '__main__':
+    WalletGetHDKeyTest().main()